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attrs_it_u
| Author | SHA1 | Date |
|---|---|---|
Tyler Goodlet
|
704c0a0cd5 |
|
|
@ -1,131 +0,0 @@
|
|||
name: CI
|
||||
|
||||
on:
|
||||
# any time someone pushes a new branch to origin
|
||||
push:
|
||||
|
||||
# Allows you to run this workflow manually from the Actions tab
|
||||
workflow_dispatch:
|
||||
|
||||
jobs:
|
||||
|
||||
mypy:
|
||||
name: 'MyPy'
|
||||
runs-on: ubuntu-latest
|
||||
|
||||
steps:
|
||||
- name: Checkout
|
||||
uses: actions/checkout@v2
|
||||
|
||||
- name: Setup python
|
||||
uses: actions/setup-python@v2
|
||||
with:
|
||||
python-version: '3.11'
|
||||
|
||||
- name: Install dependencies
|
||||
run: pip install -U . --upgrade-strategy eager -r requirements-test.txt
|
||||
|
||||
- name: Run MyPy check
|
||||
run: mypy tractor/ --ignore-missing-imports --show-traceback
|
||||
|
||||
# test that we can generate a software distribution and install it
|
||||
# thus avoid missing file issues after packaging.
|
||||
sdist-linux:
|
||||
name: 'sdist'
|
||||
runs-on: ubuntu-latest
|
||||
|
||||
steps:
|
||||
- name: Checkout
|
||||
uses: actions/checkout@v2
|
||||
|
||||
- name: Setup python
|
||||
uses: actions/setup-python@v2
|
||||
with:
|
||||
python-version: '3.11'
|
||||
|
||||
- name: Build sdist
|
||||
run: python setup.py sdist --formats=zip
|
||||
|
||||
- name: Install sdist from .zips
|
||||
run: python -m pip install dist/*.zip
|
||||
|
||||
|
||||
testing-linux:
|
||||
name: '${{ matrix.os }} Python ${{ matrix.python }} - ${{ matrix.spawn_backend }}'
|
||||
timeout-minutes: 10
|
||||
runs-on: ${{ matrix.os }}
|
||||
|
||||
strategy:
|
||||
fail-fast: false
|
||||
matrix:
|
||||
os: [ubuntu-latest]
|
||||
python: ['3.11']
|
||||
spawn_backend: [
|
||||
'trio',
|
||||
'mp_spawn',
|
||||
'mp_forkserver',
|
||||
]
|
||||
|
||||
steps:
|
||||
|
||||
- name: Checkout
|
||||
uses: actions/checkout@v2
|
||||
|
||||
- name: Setup python
|
||||
uses: actions/setup-python@v2
|
||||
with:
|
||||
python-version: '${{ matrix.python }}'
|
||||
|
||||
- name: Install dependencies
|
||||
run: pip install -U . -r requirements-test.txt -r requirements-docs.txt --upgrade-strategy eager
|
||||
|
||||
- name: List dependencies
|
||||
run: pip list
|
||||
|
||||
- name: Run tests
|
||||
run: pytest tests/ --spawn-backend=${{ matrix.spawn_backend }} -rsx
|
||||
|
||||
# We skip 3.10 on windows for now due to not having any collabs to
|
||||
# debug the CI failures. Anyone wanting to hack and solve them is very
|
||||
# welcome, but our primary user base is not using that OS.
|
||||
|
||||
# TODO: use job filtering to accomplish instead of repeated
|
||||
# boilerplate as is above XD:
|
||||
# - https://docs.github.com/en/actions/learn-github-actions/managing-complex-workflows
|
||||
# - https://docs.github.com/en/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
|
||||
# - https://docs.github.com/en/actions/learn-github-actions/workflow-syntax-for-github-actions#jobsjob_idif
|
||||
# testing-windows:
|
||||
# name: '${{ matrix.os }} Python ${{ matrix.python }} - ${{ matrix.spawn_backend }}'
|
||||
# timeout-minutes: 12
|
||||
# runs-on: ${{ matrix.os }}
|
||||
|
||||
# strategy:
|
||||
# fail-fast: false
|
||||
# matrix:
|
||||
# os: [windows-latest]
|
||||
# python: ['3.10']
|
||||
# spawn_backend: ['trio', 'mp']
|
||||
|
||||
# steps:
|
||||
|
||||
# - name: Checkout
|
||||
# uses: actions/checkout@v2
|
||||
|
||||
# - name: Setup python
|
||||
# uses: actions/setup-python@v2
|
||||
# with:
|
||||
# python-version: '${{ matrix.python }}'
|
||||
|
||||
# - name: Install dependencies
|
||||
# run: pip install -U . -r requirements-test.txt -r requirements-docs.txt --upgrade-strategy eager
|
||||
|
||||
# # TODO: pretty sure this solves debugger deps-issues on windows, but it needs to
|
||||
# # be verified by someone with a native setup.
|
||||
# # - name: Force pyreadline3
|
||||
# # run: pip uninstall pyreadline; pip install -U pyreadline3
|
||||
|
||||
# - name: List dependencies
|
||||
# run: pip list
|
||||
|
||||
# - name: Run tests
|
||||
# run: pytest tests/ --spawn-backend=${{ matrix.spawn_backend }} -rsx
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
language: python
|
||||
python:
|
||||
- '3.6'
|
||||
# setup.py reading README breaks this?
|
||||
# - pypy
|
||||
# - nightly
|
||||
|
||||
install:
|
||||
- cd $TRAVIS_BUILD_DIR
|
||||
- pip install -U . -r requirements-test.txt
|
||||
|
||||
script:
|
||||
- pytest tests/ --no-print-logs
|
||||
147
LICENSE
147
LICENSE
|
|
@ -1,21 +1,23 @@
|
|||
GNU AFFERO GENERAL PUBLIC LICENSE
|
||||
Version 3, 19 November 2007
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 3, 29 June 2007
|
||||
|
||||
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
|
||||
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The GNU Affero General Public License is a free, copyleft license for
|
||||
software and other kinds of works, specifically designed to ensure
|
||||
cooperation with the community in the case of network server software.
|
||||
The GNU General Public License is a free, copyleft license for
|
||||
software and other kinds of works.
|
||||
|
||||
The licenses for most software and other practical works are designed
|
||||
to take away your freedom to share and change the works. By contrast,
|
||||
our General Public Licenses are intended to guarantee your freedom to
|
||||
the GNU General Public License is intended to guarantee your freedom to
|
||||
share and change all versions of a program--to make sure it remains free
|
||||
software for all its users.
|
||||
software for all its users. We, the Free Software Foundation, use the
|
||||
GNU General Public License for most of our software; it applies also to
|
||||
any other work released this way by its authors. You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
|
|
@ -24,34 +26,44 @@ them if you wish), that you receive source code or can get it if you
|
|||
want it, that you can change the software or use pieces of it in new
|
||||
free programs, and that you know you can do these things.
|
||||
|
||||
Developers that use our General Public Licenses protect your rights
|
||||
with two steps: (1) assert copyright on the software, and (2) offer
|
||||
you this License which gives you legal permission to copy, distribute
|
||||
and/or modify the software.
|
||||
To protect your rights, we need to prevent others from denying you
|
||||
these rights or asking you to surrender the rights. Therefore, you have
|
||||
certain responsibilities if you distribute copies of the software, or if
|
||||
you modify it: responsibilities to respect the freedom of others.
|
||||
|
||||
A secondary benefit of defending all users' freedom is that
|
||||
improvements made in alternate versions of the program, if they
|
||||
receive widespread use, become available for other developers to
|
||||
incorporate. Many developers of free software are heartened and
|
||||
encouraged by the resulting cooperation. However, in the case of
|
||||
software used on network servers, this result may fail to come about.
|
||||
The GNU General Public License permits making a modified version and
|
||||
letting the public access it on a server without ever releasing its
|
||||
source code to the public.
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must pass on to the recipients the same
|
||||
freedoms that you received. You must make sure that they, too, receive
|
||||
or can get the source code. And you must show them these terms so they
|
||||
know their rights.
|
||||
|
||||
The GNU Affero General Public License is designed specifically to
|
||||
ensure that, in such cases, the modified source code becomes available
|
||||
to the community. It requires the operator of a network server to
|
||||
provide the source code of the modified version running there to the
|
||||
users of that server. Therefore, public use of a modified version, on
|
||||
a publicly accessible server, gives the public access to the source
|
||||
code of the modified version.
|
||||
Developers that use the GNU GPL protect your rights with two steps:
|
||||
(1) assert copyright on the software, and (2) offer you this License
|
||||
giving you legal permission to copy, distribute and/or modify it.
|
||||
|
||||
An older license, called the Affero General Public License and
|
||||
published by Affero, was designed to accomplish similar goals. This is
|
||||
a different license, not a version of the Affero GPL, but Affero has
|
||||
released a new version of the Affero GPL which permits relicensing under
|
||||
this license.
|
||||
For the developers' and authors' protection, the GPL clearly explains
|
||||
that there is no warranty for this free software. For both users' and
|
||||
authors' sake, the GPL requires that modified versions be marked as
|
||||
changed, so that their problems will not be attributed erroneously to
|
||||
authors of previous versions.
|
||||
|
||||
Some devices are designed to deny users access to install or run
|
||||
modified versions of the software inside them, although the manufacturer
|
||||
can do so. This is fundamentally incompatible with the aim of
|
||||
protecting users' freedom to change the software. The systematic
|
||||
pattern of such abuse occurs in the area of products for individuals to
|
||||
use, which is precisely where it is most unacceptable. Therefore, we
|
||||
have designed this version of the GPL to prohibit the practice for those
|
||||
products. If such problems arise substantially in other domains, we
|
||||
stand ready to extend this provision to those domains in future versions
|
||||
of the GPL, as needed to protect the freedom of users.
|
||||
|
||||
Finally, every program is threatened constantly by software patents.
|
||||
States should not allow patents to restrict development and use of
|
||||
software on general-purpose computers, but in those that do, we wish to
|
||||
avoid the special danger that patents applied to a free program could
|
||||
make it effectively proprietary. To prevent this, the GPL assures that
|
||||
patents cannot be used to render the program non-free.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
|
@ -60,7 +72,7 @@ modification follow.
|
|||
|
||||
0. Definitions.
|
||||
|
||||
"This License" refers to version 3 of the GNU Affero General Public License.
|
||||
"This License" refers to version 3 of the GNU General Public License.
|
||||
|
||||
"Copyright" also means copyright-like laws that apply to other kinds of
|
||||
works, such as semiconductor masks.
|
||||
|
|
@ -537,45 +549,35 @@ to collect a royalty for further conveying from those to whom you convey
|
|||
the Program, the only way you could satisfy both those terms and this
|
||||
License would be to refrain entirely from conveying the Program.
|
||||
|
||||
13. Remote Network Interaction; Use with the GNU General Public License.
|
||||
|
||||
Notwithstanding any other provision of this License, if you modify the
|
||||
Program, your modified version must prominently offer all users
|
||||
interacting with it remotely through a computer network (if your version
|
||||
supports such interaction) an opportunity to receive the Corresponding
|
||||
Source of your version by providing access to the Corresponding Source
|
||||
from a network server at no charge, through some standard or customary
|
||||
means of facilitating copying of software. This Corresponding Source
|
||||
shall include the Corresponding Source for any work covered by version 3
|
||||
of the GNU General Public License that is incorporated pursuant to the
|
||||
following paragraph.
|
||||
13. Use with the GNU Affero General Public License.
|
||||
|
||||
Notwithstanding any other provision of this License, you have
|
||||
permission to link or combine any covered work with a work licensed
|
||||
under version 3 of the GNU General Public License into a single
|
||||
under version 3 of the GNU Affero General Public License into a single
|
||||
combined work, and to convey the resulting work. The terms of this
|
||||
License will continue to apply to the part which is the covered work,
|
||||
but the work with which it is combined will remain governed by version
|
||||
3 of the GNU General Public License.
|
||||
but the special requirements of the GNU Affero General Public License,
|
||||
section 13, concerning interaction through a network will apply to the
|
||||
combination as such.
|
||||
|
||||
14. Revised Versions of this License.
|
||||
|
||||
The Free Software Foundation may publish revised and/or new versions of
|
||||
the GNU Affero General Public License from time to time. Such new versions
|
||||
will be similar in spirit to the present version, but may differ in detail to
|
||||
the GNU General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the
|
||||
Program specifies that a certain numbered version of the GNU Affero General
|
||||
Program specifies that a certain numbered version of the GNU General
|
||||
Public License "or any later version" applies to it, you have the
|
||||
option of following the terms and conditions either of that numbered
|
||||
version or of any later version published by the Free Software
|
||||
Foundation. If the Program does not specify a version number of the
|
||||
GNU Affero General Public License, you may choose any version ever published
|
||||
GNU General Public License, you may choose any version ever published
|
||||
by the Free Software Foundation.
|
||||
|
||||
If the Program specifies that a proxy can decide which future
|
||||
versions of the GNU Affero General Public License can be used, that proxy's
|
||||
versions of the GNU General Public License can be used, that proxy's
|
||||
public statement of acceptance of a version permanently authorizes you
|
||||
to choose that version for the Program.
|
||||
|
||||
|
|
@ -633,29 +635,40 @@ the "copyright" line and a pointer to where the full notice is found.
|
|||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU Affero General Public License as published by
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU Affero General Public License for more details.
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Affero General Public License
|
||||
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If your software can interact with users remotely through a computer
|
||||
network, you should also make sure that it provides a way for users to
|
||||
get its source. For example, if your program is a web application, its
|
||||
interface could display a "Source" link that leads users to an archive
|
||||
of the code. There are many ways you could offer source, and different
|
||||
solutions will be better for different programs; see section 13 for the
|
||||
specific requirements.
|
||||
If the program does terminal interaction, make it output a short
|
||||
notice like this when it starts in an interactive mode:
|
||||
|
||||
<program> Copyright (C) <year> <name of author>
|
||||
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, your program's commands
|
||||
might be different; for a GUI interface, you would use an "about box".
|
||||
|
||||
You should also get your employer (if you work as a programmer) or school,
|
||||
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||
For more information on this, and how to apply and follow the GNU AGPL, see
|
||||
<https://www.gnu.org/licenses/>.
|
||||
For more information on this, and how to apply and follow the GNU GPL, see
|
||||
<http://www.gnu.org/licenses/>.
|
||||
|
||||
The GNU General Public License does not permit incorporating your program
|
||||
into proprietary programs. If your program is a subroutine library, you
|
||||
may consider it more useful to permit linking proprietary applications with
|
||||
the library. If this is what you want to do, use the GNU Lesser General
|
||||
Public License instead of this License. But first, please read
|
||||
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
|
||||
|
|
|
|||
|
|
@ -1,2 +0,0 @@
|
|||
# https://packaging.python.org/en/latest/guides/using-manifest-in/#using-manifest-in
|
||||
include docs/README.rst
|
||||
528
NEWS.rst
528
NEWS.rst
|
|
@ -1,528 +0,0 @@
|
|||
=========
|
||||
Changelog
|
||||
=========
|
||||
|
||||
.. towncrier release notes start
|
||||
|
||||
tractor 0.1.0a5 (2022-08-03)
|
||||
============================
|
||||
|
||||
This is our final release supporting Python 3.9 since we will be moving
|
||||
internals to the new `match:` syntax from 3.10 going forward and
|
||||
further, we have officially dropped usage of the `msgpack` library and
|
||||
happily adopted `msgspec`.
|
||||
|
||||
Features
|
||||
--------
|
||||
|
||||
- `#165 <https://github.com/goodboy/tractor/issues/165>`_: Add SIGINT
|
||||
protection to our `pdbpp` based debugger subystem such that for
|
||||
(single-depth) actor trees in debug mode we ignore interrupts in any
|
||||
actor currently holding the TTY lock thus avoiding clobbering IPC
|
||||
connections and/or task and process state when working in the REPL.
|
||||
|
||||
As a big note currently so called "nested" actor trees (trees with
|
||||
actors having more then one parent/ancestor) are not fully supported
|
||||
since we don't yet have a mechanism to relay the debug mode knowledge
|
||||
"up" the actor tree (for eg. when handling a crash in a leaf actor).
|
||||
As such currently there is a set of tests and known scenarios which will
|
||||
result in process cloberring by the zombie repaing machinery and these
|
||||
have been documented in https://github.com/goodboy/tractor/issues/320.
|
||||
|
||||
The implementation details include:
|
||||
|
||||
- utilizing a custom SIGINT handler which we apply whenever an actor's
|
||||
runtime enters the debug machinery, which we also make sure the
|
||||
stdlib's `pdb` configuration doesn't override (which it does by
|
||||
default without special instance config).
|
||||
- litter the runtime with `maybe_wait_for_debugger()` mostly in spots
|
||||
where the root actor should block before doing embedded nursery
|
||||
teardown ops which both cancel potential-children-in-deubg as well
|
||||
as eventually trigger zombie reaping machinery.
|
||||
- hardening of the TTY locking semantics/API both in terms of IPC
|
||||
terminations and cancellation and lock release determinism from
|
||||
sync debugger instance methods.
|
||||
- factoring of locking infrastructure into a new `._debug.Lock` global
|
||||
which encapsulates all details of the ``trio`` sync primitives and
|
||||
task/actor uid management and tracking.
|
||||
|
||||
We also add `ctrl-c` cases throughout the test suite though these are
|
||||
disabled for py3.9 (`pdbpp` UX differences that don't seem worth
|
||||
compensating for, especially since this will be our last 3.9 supported
|
||||
release) and there are a slew of marked cases that aren't expected to
|
||||
work in CI more generally (as mentioned in the "nested" tree note
|
||||
above) despite seemingly working when run manually on linux.
|
||||
|
||||
- `#304 <https://github.com/goodboy/tractor/issues/304>`_: Add a new
|
||||
``to_asyncio.LinkedTaskChannel.subscribe()`` which gives task-oriented
|
||||
broadcast functionality semantically equivalent to
|
||||
``tractor.MsgStream.subscribe()`` this makes it possible for multiple
|
||||
``trio``-side tasks to consume ``asyncio``-side task msgs in tandem.
|
||||
|
||||
Further Improvements to the test suite were added in this patch set
|
||||
including a new scenario test for a sub-actor managed "service nursery"
|
||||
(implementing the basics of a "service manager") including use of
|
||||
*infected asyncio* mode. Further we added a lower level
|
||||
``test_trioisms.py`` to start to track issues we need to work around in
|
||||
``trio`` itself which in this case included a bug we were trying to
|
||||
solve related to https://github.com/python-trio/trio/issues/2258.
|
||||
|
||||
|
||||
Bug Fixes
|
||||
---------
|
||||
|
||||
- `#318 <https://github.com/goodboy/tractor/issues/318>`_: Fix
|
||||
a previously undetected ``trio``-``asyncio`` task lifetime linking
|
||||
issue with the ``to_asyncio.open_channel_from()`` api where both sides
|
||||
where not properly waiting/signalling termination and it was possible
|
||||
for ``asyncio``-side errors to not propagate due to a race condition.
|
||||
|
||||
The implementation fix summary is:
|
||||
- add state to signal the end of the ``trio`` side task to be
|
||||
read by the ``asyncio`` side and always cancel any ongoing
|
||||
task in such cases.
|
||||
- always wait on the ``asyncio`` task termination from the ``trio``
|
||||
side on error before maybe raising said error.
|
||||
- always close the ``trio`` mem chan on exit to ensure the other
|
||||
side can detect it and follow.
|
||||
|
||||
|
||||
Trivial/Internal Changes
|
||||
------------------------
|
||||
|
||||
- `#248 <https://github.com/goodboy/tractor/issues/248>`_: Adjust the
|
||||
`tractor._spawn.soft_wait()` strategy to avoid sending an actor cancel
|
||||
request (via `Portal.cancel_actor()`) if either the child process is
|
||||
detected as having terminated or the IPC channel is detected to be
|
||||
closed.
|
||||
|
||||
This ensures (even) more deterministic inter-actor cancellation by
|
||||
avoiding the timeout condition where possible when a whild never
|
||||
sucessfully spawned, crashed, or became un-contactable over IPC.
|
||||
|
||||
- `#295 <https://github.com/goodboy/tractor/issues/295>`_: Add an
|
||||
experimental ``tractor.msg.NamespacePath`` type for passing Python
|
||||
objects by "reference" through a ``str``-subtype message and using the
|
||||
new ``pkgutil.resolve_name()`` for reference loading.
|
||||
|
||||
- `#298 <https://github.com/goodboy/tractor/issues/298>`_: Add a new
|
||||
`tractor.experimental` subpackage for staging new high level APIs and
|
||||
subystems that we might eventually make built-ins.
|
||||
|
||||
- `#300 <https://github.com/goodboy/tractor/issues/300>`_: Update to and
|
||||
pin latest ``msgpack`` (1.0.3) and ``msgspec`` (0.4.0) both of which
|
||||
required adjustments for backwards imcompatible API tweaks.
|
||||
|
||||
- `#303 <https://github.com/goodboy/tractor/issues/303>`_: Fence off
|
||||
``multiprocessing`` imports until absolutely necessary in an effort to
|
||||
avoid "resource tracker" spawning side effects that seem to have
|
||||
varying degrees of unreliability per Python release. Port to new
|
||||
``msgspec.DecodeError``.
|
||||
|
||||
- `#305 <https://github.com/goodboy/tractor/issues/305>`_: Add
|
||||
``tractor.query_actor()`` an addr looker-upper which doesn't deliver
|
||||
a ``Portal`` instance and instead just a socket address ``tuple``.
|
||||
|
||||
Sometimes it's handy to just have a simple way to figure out if
|
||||
a "service" actor is up, so add this discovery helper for that. We'll
|
||||
prolly just leave it undocumented for now until we figure out
|
||||
a longer-term/better discovery system.
|
||||
|
||||
- `#316 <https://github.com/goodboy/tractor/issues/316>`_: Run windows
|
||||
CI jobs on python 3.10 after some hacks for ``pdbpp`` dependency
|
||||
issues.
|
||||
|
||||
Issue was to do with the now deprecated `pyreadline` project which
|
||||
should be changed over to `pyreadline3`.
|
||||
|
||||
- `#317 <https://github.com/goodboy/tractor/issues/317>`_: Drop use of
|
||||
the ``msgpack`` package and instead move fully to the ``msgspec``
|
||||
codec library.
|
||||
|
||||
We've now used ``msgspec`` extensively in production and there's no
|
||||
reason to not use it as default. Further this change preps us for the up
|
||||
and coming typed messaging semantics (#196), dialog-unprotocol system
|
||||
(#297), and caps-based messaging-protocols (#299) planned before our
|
||||
first beta.
|
||||
|
||||
|
||||
tractor 0.1.0a4 (2021-12-18)
|
||||
============================
|
||||
|
||||
Features
|
||||
--------
|
||||
- `#275 <https://github.com/goodboy/tractor/issues/275>`_: Re-license
|
||||
code base under AGPLv3. Also see `#274
|
||||
<https://github.com/goodboy/tractor/pull/274>`_ for majority
|
||||
contributor consensus on this decision.
|
||||
|
||||
- `#121 <https://github.com/goodboy/tractor/issues/121>`_: Add
|
||||
"infected ``asyncio`` mode; a sub-system to spawn and control
|
||||
``asyncio`` actors using ``trio``'s guest-mode.
|
||||
|
||||
This gets us the following very interesting functionality:
|
||||
|
||||
- ability to spawn an actor that has a process entry point of
|
||||
``asyncio.run()`` by passing ``infect_asyncio=True`` to
|
||||
``Portal.start_actor()`` (and friends).
|
||||
- the ``asyncio`` actor embeds ``trio`` using guest-mode and starts
|
||||
a main ``trio`` task which runs the ``tractor.Actor._async_main()``
|
||||
entry point engages all the normal ``tractor`` runtime IPC/messaging
|
||||
machinery; for all purposes the actor is now running normally on
|
||||
a ``trio.run()``.
|
||||
- the actor can now make one-to-one task spawning requests to the
|
||||
underlying ``asyncio`` event loop using either of:
|
||||
|
||||
* ``to_asyncio.run_task()`` to spawn and run an ``asyncio`` task to
|
||||
completion and block until a return value is delivered.
|
||||
* ``async with to_asyncio.open_channel_from():`` which spawns a task
|
||||
and hands it a pair of "memory channels" to allow for bi-directional
|
||||
streaming between the now SC-linked ``trio`` and ``asyncio`` tasks.
|
||||
|
||||
The output from any call(s) to ``asyncio`` can be handled as normal in
|
||||
``trio``/``tractor`` task operation with the caveat of the overhead due
|
||||
to guest-mode use.
|
||||
|
||||
For more details see the `original PR
|
||||
<https://github.com/goodboy/tractor/pull/121>`_ and `issue
|
||||
<https://github.com/goodboy/tractor/issues/120>`_.
|
||||
|
||||
- `#257 <https://github.com/goodboy/tractor/issues/257>`_: Add
|
||||
``trionics.maybe_open_context()`` an actor-scoped async multi-task
|
||||
context manager resource caching API.
|
||||
|
||||
Adds an SC-safe cacheing async context manager api that only enters on
|
||||
the *first* task entry and only exits on the *last* task exit while in
|
||||
between delivering the same cached value per input key. Keys can be
|
||||
either an explicit ``key`` named arg provided by the user or a
|
||||
hashable ``kwargs`` dict (will be converted to a ``list[tuple]``) which
|
||||
is passed to the underlying manager function as input.
|
||||
|
||||
- `#261 <https://github.com/goodboy/tractor/issues/261>`_: Add
|
||||
cross-actor-task ``Context`` oriented error relay, a new stream
|
||||
overrun error-signal ``StreamOverrun``, and support disabling
|
||||
``MsgStream`` backpressure as the default before a stream is opened or
|
||||
by choice of the user.
|
||||
|
||||
We added stricter semantics around ``tractor.Context.open_stream():``
|
||||
particularly to do with streams which are only opened at one end.
|
||||
Previously, if only one end opened a stream there was no way for that
|
||||
sender to know if msgs are being received until first, the feeder mem
|
||||
chan on the receiver side hit a backpressure state and then that
|
||||
condition delayed its msg loop processing task to eventually create
|
||||
backpressure on the associated IPC transport. This is non-ideal in the
|
||||
case where the receiver side never opened a stream by mistake since it
|
||||
results in silent block of the sender and no adherence to the underlying
|
||||
mem chan buffer size settings (which is still unsolved btw).
|
||||
|
||||
To solve this we add non-backpressure style message pushing inside
|
||||
``Actor._push_result()`` by default and only use the backpressure
|
||||
``trio.MemorySendChannel.send()`` call **iff** the local end of the
|
||||
context has entered ``Context.open_stream():``. This way if the stream
|
||||
was never opened but the mem chan is overrun, we relay back to the
|
||||
sender a (new exception) ``SteamOverrun`` error which is raised in the
|
||||
sender's scope with a special error message about the stream never
|
||||
having been opened. Further, this behaviour (non-backpressure style
|
||||
where senders can expect an error on overruns) can now be enabled with
|
||||
``.open_stream(backpressure=False)`` and the underlying mem chan size
|
||||
can be specified with a kwarg ``msg_buffer_size: int``.
|
||||
|
||||
Further bug fixes and enhancements in this changeset include:
|
||||
|
||||
- fix a race we were ignoring where if the callee task opened a context
|
||||
it could enter ``Context.open_stream()`` before calling
|
||||
``.started()``.
|
||||
- Disallow calling ``Context.started()`` more then once.
|
||||
- Enable ``Context`` linked tasks error relaying via the new
|
||||
``Context._maybe_raise_from_remote_msg()`` which (for now) uses
|
||||
a simple ``trio.Nursery.start_soon()`` to raise the error via closure
|
||||
in the local scope.
|
||||
|
||||
- `#267 <https://github.com/goodboy/tractor/issues/267>`_: This
|
||||
(finally) adds fully acknowledged remote cancellation messaging
|
||||
support for both explicit ``Portal.cancel_actor()`` calls as well as
|
||||
when there is a "runtime-wide" cancellations (eg. during KBI or
|
||||
general actor nursery exception handling which causes a full actor
|
||||
"crash"/termination).
|
||||
|
||||
You can think of this as the most ideal case in 2-generals where the
|
||||
actor requesting the cancel of its child is able to always receive back
|
||||
the ACK to that request. This leads to a more deterministic shutdown of
|
||||
the child where the parent is able to wait for the child to fully
|
||||
respond to the request. On a localhost setup, where the parent can
|
||||
monitor the state of the child through process or other OS APIs instead
|
||||
of solely through IPC messaging, the parent can know whether or not the
|
||||
child decided to cancel with more certainty. In the case of separate
|
||||
hosts, we still rely on a simple timeout approach until such a time
|
||||
where we prefer to get "fancier".
|
||||
|
||||
- `#271 <https://github.com/goodboy/tractor/issues/271>`_: Add a per
|
||||
actor ``debug_mode: bool`` control to our nursery.
|
||||
|
||||
This allows spawning actors via ``ActorNursery.start_actor()`` (and
|
||||
other dependent methods) with a ``debug_mode=True`` flag much like
|
||||
``tractor.open_nursery():`` such that per process crash handling
|
||||
can be toggled for cases where a user does not need/want all child actors
|
||||
to drop into the debugger on error. This is often useful when you have
|
||||
actor-tasks which are expected to error often (and be re-run) but want
|
||||
to specifically interact with some (problematic) child.
|
||||
|
||||
|
||||
Bugfixes
|
||||
--------
|
||||
|
||||
- `#239 <https://github.com/goodboy/tractor/issues/239>`_: Fix
|
||||
keyboard interrupt handling in ``Portal.open_context()`` blocks.
|
||||
|
||||
Previously this was not triggering cancellation of the remote task
|
||||
context and could result in hangs if a stream was also opened. This
|
||||
fix is to accept `BaseException` since it is likely any other top
|
||||
level exception other then KBI (even though not expected) should also
|
||||
get this result.
|
||||
|
||||
- `#264 <https://github.com/goodboy/tractor/issues/264>`_: Fix
|
||||
``Portal.run_in_actor()`` returns ``None`` result.
|
||||
|
||||
``None`` was being used as the cached result flag and obviously breaks
|
||||
on a ``None`` returned from the remote target task. This would cause an
|
||||
infinite hang if user code ever called ``Portal.result()`` *before* the
|
||||
nursery exit. The simple fix is to use the *return message* as the
|
||||
initial "no-result-received-yet" flag value and, once received, the
|
||||
return value is read from the message to avoid the cache logic error.
|
||||
|
||||
- `#266 <https://github.com/goodboy/tractor/issues/266>`_: Fix
|
||||
graceful cancellation of daemon actors
|
||||
|
||||
Previously, his was a bug where if the soft wait on a sub-process (the
|
||||
``await .proc.wait()``) in the reaper task teardown was cancelled we
|
||||
would fail over to the hard reaping sequence (meant for culling off any
|
||||
potential zombies via system kill signals). The hard reap has a timeout
|
||||
of 3s (currently though in theory we could make it shorter?) before
|
||||
system signalling kicks in. This means that any daemon actor still
|
||||
running during nursery exit would get hard reaped (3s later) instead of
|
||||
cancelled via IPC message. Now we catch the ``trio.Cancelled``, call
|
||||
``Portal.cancel_actor()`` on the daemon and expect the child to
|
||||
self-terminate after the runtime cancels and shuts down the process.
|
||||
|
||||
- `#278 <https://github.com/goodboy/tractor/issues/278>`_: Repair
|
||||
inter-actor stream closure semantics to work correctly with
|
||||
``tractor.trionics.BroadcastReceiver`` task fan out usage.
|
||||
|
||||
A set of previously unknown bugs discovered in `#257
|
||||
<https://github.com/goodboy/tractor/pull/257>`_ let graceful stream
|
||||
closure result in hanging consumer tasks that use the broadcast APIs.
|
||||
This adds better internal closure state tracking to the broadcast
|
||||
receiver and message stream APIs and in particular ensures that when an
|
||||
underlying stream/receive-channel (a broadcast receiver is receiving
|
||||
from) is closed, all consumer tasks waiting on that underlying channel
|
||||
are woken so they can receive the ``trio.EndOfChannel`` signal and
|
||||
promptly terminate.
|
||||
|
||||
|
||||
tractor 0.1.0a3 (2021-11-02)
|
||||
============================
|
||||
|
||||
Features
|
||||
--------
|
||||
|
||||
- Switch to using the ``trio`` process spawner by default on windows. (#166)
|
||||
|
||||
This gets windows users debugger support (manually tested) and in
|
||||
general a more resilient (nested) actor tree implementation.
|
||||
|
||||
- Add optional `msgspec <https://jcristharif.com/msgspec/>`_ support
|
||||
as an alernative, faster MessagePack codec. (#214)
|
||||
|
||||
Provides us with a path toward supporting typed IPC message contracts. Further,
|
||||
``msgspec`` structs may be a valid tool to start for formalizing our
|
||||
"SC dialog un-protocol" messages as described in `#36
|
||||
<https://github.com/goodboy/tractor/issues/36>`_.
|
||||
|
||||
- Introduce a new ``tractor.trionics`` `sub-package`_ that exposes
|
||||
a selection of our relevant high(er) level trio primitives and
|
||||
goodies. (#241)
|
||||
|
||||
At outset we offer a ``gather_contexts()`` context manager for
|
||||
concurrently entering a sequence of async context managers (much like
|
||||
a version of ``asyncio.gather()`` but for context managers) and use it
|
||||
in a new ``tractor.open_actor_cluster()`` manager-helper that can be
|
||||
entered to concurrently spawn a flat actor pool. We also now publicly
|
||||
expose our "broadcast channel" APIs (``open_broadcast_receiver()``)
|
||||
from here.
|
||||
|
||||
.. _sub-package: ../tractor/trionics
|
||||
|
||||
- Change the core message loop to handle task and actor-runtime cancel
|
||||
requests immediately instead of scheduling them as is done for rpc-task
|
||||
requests. (#245)
|
||||
|
||||
In order to obtain more reliable teardown mechanics for (complex) actor
|
||||
trees it's important that we specially treat cancel requests as having
|
||||
higher priority. Previously, it was possible that task cancel requests
|
||||
could actually also themselves be cancelled if a "actor-runtime" cancel
|
||||
request was received (can happen during messy multi actor crashes that
|
||||
propagate). Instead cancels now block the msg loop until serviced and
|
||||
a response is relayed back to the requester. This also allows for
|
||||
improved debugger support since we have determinism guarantees about
|
||||
which processes must wait before hard killing their children.
|
||||
|
||||
- (`#248 <https://github.com/goodboy/tractor/pull/248>`_) Drop Python
|
||||
3.8 support in favour of rolling with two latest releases for the time
|
||||
being.
|
||||
|
||||
|
||||
Misc
|
||||
----
|
||||
|
||||
- (`#243 <https://github.com/goodboy/tractor/pull/243>`_) add a distinct
|
||||
``'CANCEL'`` log level to allow the runtime to emit details about
|
||||
cancellation machinery statuses.
|
||||
|
||||
|
||||
tractor 0.1.0a2 (2021-09-07)
|
||||
============================
|
||||
|
||||
Features
|
||||
--------
|
||||
|
||||
- Add `tokio-style broadcast channels
|
||||
<https://docs.rs/tokio/1.11.0/tokio/sync/broadcast/index.html>`_ as
|
||||
a solution for `#204 <https://github.com/goodboy/tractor/pull/204>`_ and
|
||||
discussed thoroughly in `trio/#987
|
||||
<https://github.com/python-trio/trio/issues/987>`_.
|
||||
|
||||
This gives us local task broadcast functionality using a new
|
||||
``BroadcastReceiver`` type which can wrap ``trio.ReceiveChannel`` and
|
||||
provide fan-out copies of a stream of data to every subscribed consumer.
|
||||
We use this new machinery to provide a ``ReceiveMsgStream.subscribe()``
|
||||
async context manager which can be used by actor-local concumers tasks
|
||||
to easily pull from a shared and dynamic IPC stream. (`#229
|
||||
<https://github.com/goodboy/tractor/pull/229>`_)
|
||||
|
||||
|
||||
Bugfixes
|
||||
--------
|
||||
|
||||
- Handle broken channel/stream faults where the root's tty lock is left
|
||||
acquired by some child actor who went MIA and the root ends up hanging
|
||||
indefinitely. (`#234 <https://github.com/goodboy/tractor/pull/234>`_)
|
||||
|
||||
There's two parts here: we no longer shield wait on the lock and,
|
||||
now always do our best to release the lock on the expected worst
|
||||
case connection faults.
|
||||
|
||||
|
||||
Deprecations and Removals
|
||||
-------------------------
|
||||
|
||||
- Drop stream "shielding" support which was originally added to sidestep
|
||||
a cancelled call to ``.receive()``
|
||||
|
||||
In the original api design a stream instance was returned directly from
|
||||
a call to ``Portal.run()`` and thus there was no "exit phase" to handle
|
||||
cancellations and errors which would trigger implicit closure. Now that
|
||||
we have said enter/exit semantics with ``Portal.open_stream_from()`` and
|
||||
``Context.open_stream()`` we can drop this implicit (and arguably
|
||||
confusing) behavior. (`#230 <https://github.com/goodboy/tractor/pull/230>`_)
|
||||
|
||||
- Drop Python 3.7 support in preparation for supporting 3.9+ syntax.
|
||||
(`#232 <https://github.com/goodboy/tractor/pull/232>`_)
|
||||
|
||||
|
||||
tractor 0.1.0a1 (2021-08-01)
|
||||
============================
|
||||
|
||||
Features
|
||||
--------
|
||||
- Updated our uni-directional streaming API (`#206
|
||||
<https://github.com/goodboy/tractor/pull/206>`_) to require a context
|
||||
manager style ``async with Portal.open_stream_from(target) as stream:``
|
||||
which explicitly determines when to stop a stream in the calling (aka
|
||||
portal opening) actor much like ``async_generator.aclosing()``
|
||||
enforcement.
|
||||
|
||||
- Improved the ``multiprocessing`` backend sub-actor reaping (`#208
|
||||
<https://github.com/goodboy/tractor/pull/208>`_) during actor nursery
|
||||
exit, particularly during cancellation scenarios that previously might
|
||||
result in hard to debug hangs.
|
||||
|
||||
- Added initial bi-directional streaming support in `#219
|
||||
<https://github.com/goodboy/tractor/pull/219>`_ with follow up debugger
|
||||
improvements via `#220 <https://github.com/goodboy/tractor/pull/220>`_
|
||||
using the new ``tractor.Context`` cross-actor task syncing system.
|
||||
The debugger upgrades add an edge triggered last-in-tty-lock semaphore
|
||||
which allows the root process for a tree to avoid clobbering children
|
||||
who have queued to acquire the ``pdb`` repl by waiting to cancel
|
||||
sub-actors until the lock is known to be released **and** has no
|
||||
pending waiters.
|
||||
|
||||
|
||||
Experiments and WIPs
|
||||
--------------------
|
||||
- Initial optional ``msgspec`` serialization support in `#214
|
||||
<https://github.com/goodboy/tractor/pull/214>`_ which should hopefully
|
||||
land by next release.
|
||||
|
||||
- Improved "infect ``asyncio``" cross-loop task cancellation and error
|
||||
propagation by vastly simplifying the cross-loop-task streaming approach.
|
||||
We may end up just going with a use of ``anyio`` in the medium term to
|
||||
avoid re-doing work done by their cross-event-loop portals. See the
|
||||
``infect_asyncio`` for details.
|
||||
|
||||
|
||||
Improved Documentation
|
||||
----------------------
|
||||
- `Updated our readme <https://github.com/goodboy/tractor/pull/211>`_ to
|
||||
include more (and better) `examples
|
||||
<https://github.com/goodboy/tractor#run-a-func-in-a-process>`_ (with
|
||||
matching multi-terminal process monitoring shell commands) as well as
|
||||
added many more examples to the `repo set
|
||||
<https://github.com/goodboy/tractor/tree/master/examples>`_.
|
||||
|
||||
- Added a readme `"actors under the hood" section
|
||||
<https://github.com/goodboy/tractor#under-the-hood>`_ in an effort to
|
||||
guard against suggestions for changing the API away from ``trio``'s
|
||||
*tasks-as-functions* style.
|
||||
|
||||
- Moved to using the `sphinx book theme
|
||||
<https://sphinx-book-theme.readthedocs.io/en/latest/index.html>`_
|
||||
though it needs some heavy tweaking and doesn't seem to show our logo
|
||||
on rtd :(
|
||||
|
||||
|
||||
Trivial/Internal Changes
|
||||
------------------------
|
||||
- Added a new ``TransportClosed`` internal exception/signal (`#215
|
||||
<https://github.com/goodboy/tractor/pull/215>`_ for catching TCP
|
||||
channel gentle closes instead of silently falling through the message
|
||||
handler loop via an async generator ``return``.
|
||||
|
||||
|
||||
Deprecations and Removals
|
||||
-------------------------
|
||||
- Dropped support for invoking sync functions (`#205
|
||||
<https://github.com/goodboy/tractor/pull/205>`_) in other
|
||||
actors/processes since you can always wrap a sync function from an
|
||||
async one. Users can instead consider using ``trio-parallel`` which
|
||||
is a project specifically geared for purely synchronous calls in
|
||||
sub-processes.
|
||||
|
||||
- Deprecated our ``tractor.run()`` entrypoint `#197
|
||||
<https://github.com/goodboy/tractor/pull/197>`_; the runtime is now
|
||||
either started implicitly in first actor nursery use or via an
|
||||
explicit call to ``tractor.open_root_actor()``. Full removal of
|
||||
``tractor.run()`` will come by beta release.
|
||||
|
||||
|
||||
tractor 0.1.0a0 (2021-02-28)
|
||||
============================
|
||||
|
||||
..
|
||||
TODO: fill out more of the details of the initial feature set in some TLDR form
|
||||
|
||||
Summary
|
||||
-------
|
||||
- ``trio`` based process spawner (using ``subprocess``)
|
||||
- initial multi-process debugging with ``pdb++``
|
||||
- windows support using both ``trio`` and ``multiprocessing`` spawners
|
||||
- "portal" api for cross-process, structured concurrent, (streaming) IPC
|
||||
|
|
@ -0,0 +1,631 @@
|
|||
tractor
|
||||
=======
|
||||
An async-native `actor model`_ built on trio_ and multiprocessing_.
|
||||
|
||||
|
||||
|travis|
|
||||
|
||||
.. |travis| image:: https://img.shields.io/travis/tgoodlet/tractor/master.svg
|
||||
:target: https://travis-ci.org/tgoodlet/tractor
|
||||
|
||||
.. _actor model: https://en.wikipedia.org/wiki/Actor_model
|
||||
.. _trio: https://github.com/python-trio/trio
|
||||
.. _multiprocessing: https://docs.python.org/3/library/multiprocessing.html
|
||||
.. _trionic: https://trio.readthedocs.io/en/latest/design.html#high-level-design-principles
|
||||
.. _async sandwich: https://trio.readthedocs.io/en/latest/tutorial.html#async-sandwich
|
||||
.. _always propagate: https://trio.readthedocs.io/en/latest/design.html#exceptions-always-propagate
|
||||
.. _causality: https://vorpus.org/blog/some-thoughts-on-asynchronous-api-design-in-a-post-asyncawait-world/#c-c-c-c-causality-breaker
|
||||
.. _shared nothing architecture: https://en.wikipedia.org/wiki/Shared-nothing_architecture
|
||||
.. _cancellation: https://trio.readthedocs.io/en/latest/reference-core.html#cancellation-and-timeouts
|
||||
.. _channels: https://en.wikipedia.org/wiki/Channel_(programming)
|
||||
.. _chaos engineering: http://principlesofchaos.org/
|
||||
|
||||
|
||||
What's this? Spawning event loops in processes?
|
||||
-----------------------------------------------
|
||||
Heh, yeah pretty much.
|
||||
|
||||
``tractor`` is an attempt to take trionic_ concurrency concepts and apply
|
||||
them to distributed multi-core Python.
|
||||
|
||||
``tractor`` lets you run and spawn *actors*: separate processes which run a ``trio``
|
||||
scheduler and task tree (also known as an `async sandwich`_).
|
||||
*Actors* communicate by sending messages_ over channels_ and avoid sharing any state.
|
||||
This `actor model`_ allows for highly distributed software architecture which works just as
|
||||
well on multiple cores as it does over many hosts.
|
||||
``tractor`` takes much inspiration from pulsar_ and execnet_ but attempts to be much more
|
||||
focussed on sophistication of the lower level distributed architecture as well as have first
|
||||
class support for `modern async Python`_.
|
||||
|
||||
The first step to grok ``tractor`` is to get the basics of ``trio``
|
||||
down. A great place to start is the `trio docs`_ and this `blog post`_.
|
||||
|
||||
.. _messages: https://en.wikipedia.org/wiki/Message_passing
|
||||
.. _trio docs: https://trio.readthedocs.io/en/latest/
|
||||
.. _blog post: https://vorpus.org/blog/notes-on-structured-concurrency-or-go-statement-considered-harmful/
|
||||
.. _modern async Python: https://www.python.org/dev/peps/pep-0525/
|
||||
|
||||
|
||||
Philosophy
|
||||
----------
|
||||
``tractor``'s tenets non-comprehensively include:
|
||||
|
||||
- no spawning of processes *willy-nilly*; causality_ is paramount!
|
||||
- `shared nothing architecture`_
|
||||
- remote errors `always propagate`_ back to the caller
|
||||
- verbatim support for ``trio``'s cancellation_ system
|
||||
- no use of *proxy* objects to wrap RPC calls
|
||||
- an immersive debugging experience
|
||||
- anti-fragility through `chaos engineering`_
|
||||
|
||||
.. warning:: ``tractor`` is in alpha-alpha and is expected to change rapidly!
|
||||
Expect nothing to be set in stone. Your ideas about where it should go
|
||||
are greatly appreciated!
|
||||
|
||||
.. _pulsar: http://quantmind.github.io/pulsar/design.html
|
||||
.. _execnet: https://codespeak.net/execnet/
|
||||
|
||||
|
||||
Install
|
||||
-------
|
||||
No PyPi release yet!
|
||||
|
||||
::
|
||||
|
||||
pip install git+git://github.com/tgoodlet/tractor.git
|
||||
|
||||
|
||||
A trynamic first scene
|
||||
----------------------
|
||||
Let's direct a couple *actors* and have them run their lines for
|
||||
the hip new film we're shooting:
|
||||
|
||||
.. code:: python
|
||||
|
||||
import tractor
|
||||
from functools import partial
|
||||
|
||||
_this_module = __name__
|
||||
the_line = 'Hi my name is {}'
|
||||
|
||||
|
||||
async def hi():
|
||||
return the_line.format(tractor.current_actor().name)
|
||||
|
||||
|
||||
async def say_hello(other_actor):
|
||||
async with tractor.wait_for_actor(other_actor) as portal:
|
||||
return await portal.run(_this_module, 'hi')
|
||||
|
||||
|
||||
async def main():
|
||||
"""Main tractor entry point, the "master" process (for now
|
||||
acts as the "director").
|
||||
"""
|
||||
async with tractor.open_nursery() as n:
|
||||
print("Alright... Action!")
|
||||
|
||||
donny = await n.run_in_actor(
|
||||
'donny',
|
||||
say_hello,
|
||||
other_actor='gretchen',
|
||||
)
|
||||
gretchen = await n.run_in_actor(
|
||||
'gretchen',
|
||||
say_hello,
|
||||
other_actor='donny',
|
||||
)
|
||||
print(await gretchen.result())
|
||||
print(await donny.result())
|
||||
print("CUTTTT CUUTT CUT!!! Donny!! You're supposed to say...")
|
||||
|
||||
|
||||
tractor.run(main)
|
||||
|
||||
|
||||
We spawn two *actors*, *donny* and *gretchen*.
|
||||
Each actor starts up and executes their *main task* defined by an
|
||||
async function, ``say_hello()``. The function instructs each actor
|
||||
to find their partner and say hello by calling their partner's
|
||||
``hi()`` function using something called a *portal*. Each actor
|
||||
receives a response and relays that back to the parent actor (in
|
||||
this case our "director" executing ``main()``).
|
||||
|
||||
|
||||
Actor spawning and causality
|
||||
----------------------------
|
||||
``tractor`` tries to take ``trio``'s concept of causal task lifetimes
|
||||
to multi-process land. Accordingly, ``tractor``'s *actor nursery* behaves
|
||||
similar to ``trio``'s nursery_. That is, ``tractor.open_nursery()``
|
||||
opens an ``ActorNursery`` which waits on spawned *actors* to complete
|
||||
(or error) in the same causal_ way ``trio`` waits on spawned subtasks.
|
||||
This includes errors from any one actor causing all other actors
|
||||
spawned by the same nursery to be cancelled_.
|
||||
|
||||
To spawn an actor and run a function in it, open a *nursery block*
|
||||
and use the ``run_in_actor()`` method:
|
||||
|
||||
.. code:: python
|
||||
|
||||
import tractor
|
||||
|
||||
|
||||
def cellar_door():
|
||||
return "Dang that's beautiful"
|
||||
|
||||
|
||||
async def main():
|
||||
"""The main ``tractor`` routine.
|
||||
"""
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.run_in_actor('frank', movie_theatre_question)
|
||||
|
||||
# The ``async with`` will unblock here since the 'frank'
|
||||
# actor has completed its main task ``movie_theatre_question()``.
|
||||
|
||||
print(await portal.result())
|
||||
|
||||
|
||||
tractor.run(main)
|
||||
|
||||
|
||||
What's going on?
|
||||
|
||||
- an initial *actor* is started with ``tractor.run()`` and told to execute
|
||||
its main task_: ``main()``
|
||||
|
||||
- inside ``main()`` an actor is *spawned* using an ``ActorNusery`` and is told
|
||||
to run a single function: ``cellar_door()``
|
||||
|
||||
- a ``portal`` instance (we'll get to what it is shortly)
|
||||
returned from ``nursery.run_in_actor()`` is used to communicate with
|
||||
the newly spawned *sub-actor*
|
||||
|
||||
- the second actor, *frank*, in a new *process* running a new ``trio`` task_
|
||||
then executes ``cellar_door()`` and returns its result over a *channel* back
|
||||
to the parent actor
|
||||
|
||||
- the parent actor retrieves the subactor's (*frank*) *final result* using ``portal.result()``
|
||||
much like you'd expect from a future_.
|
||||
|
||||
This ``run_in_actor()`` API should look very familiar to users of
|
||||
``asyncio``'s run_in_executor_ which uses a ``concurrent.futures`` Executor_.
|
||||
|
||||
Since you might also want to spawn long running *worker* or *daemon*
|
||||
actors, each actor's *lifetime* can be determined based on the spawn
|
||||
method:
|
||||
|
||||
- if the actor is spawned using ``run_in_actor()`` it terminates when
|
||||
its *main* task completes (i.e. when the (async) function submitted
|
||||
to it *returns*). The ``with tractor.open_nursery()`` exits only once
|
||||
all actors' main function/task complete (just like the nursery_ in ``trio``)
|
||||
|
||||
- actors can be spawned to *live forever* using the ``start_actor()``
|
||||
method and act like an RPC daemon that runs indefinitely (the
|
||||
``with tractor.open_nursery()`` wont' exit) until cancelled_
|
||||
|
||||
Had we wanted the latter form in our example it would have looked like:
|
||||
|
||||
.. code:: python
|
||||
|
||||
def movie_theatre_question():
|
||||
"""A question asked in a dark theatre, in a tangent
|
||||
(errr, I mean different) process.
|
||||
"""
|
||||
return 'have you ever seen a portal?'
|
||||
|
||||
|
||||
async def main():
|
||||
"""The main ``tractor`` routine.
|
||||
"""
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.start_actor(
|
||||
'frank',
|
||||
# enable the actor to run funcs from this current module
|
||||
rpc_module_paths=[__name__],
|
||||
)
|
||||
|
||||
print(await portal.run(__name__, 'movie_theatre_question'))
|
||||
# call the subactor a 2nd time
|
||||
print(await portal.run(__name__, 'movie_theatre_question'))
|
||||
|
||||
# the async with will block here indefinitely waiting
|
||||
# for our actor "frank" to complete, but since it's an
|
||||
# "outlive_main" actor it will never end until cancelled
|
||||
await portal.cancel_actor()
|
||||
|
||||
|
||||
The ``rpc_module_paths`` `kwarg` above is a list of module path
|
||||
strings that will be loaded and made accessible for execution in the
|
||||
remote actor through a call to ``Portal.run()``. For now this is
|
||||
a simple mechanism to restrict the functionality of the remote
|
||||
(and possibly daemonized) actor and uses Python's module system to
|
||||
limit the allowed remote function namespace(s).
|
||||
|
||||
``tractor`` is opinionated about the underlying threading model used for
|
||||
each *actor*. Since Python has a GIL and an actor model by definition
|
||||
shares no state between actors, it fits naturally to use a multiprocessing_
|
||||
``Process``. This allows ``tractor`` programs to leverage not only multi-core
|
||||
hardware but also distribute over many hardware hosts (each *actor* can talk
|
||||
to all others with ease over standard network protocols).
|
||||
|
||||
.. _task: https://trio.readthedocs.io/en/latest/reference-core.html#tasks-let-you-do-multiple-things-at-once
|
||||
.. _nursery: https://trio.readthedocs.io/en/latest/reference-core.html#nurseries-and-spawning
|
||||
.. _causal: https://vorpus.org/blog/some-thoughts-on-asynchronous-api-design-in-a-post-asyncawait-world/#causality
|
||||
.. _cancelled: https://trio.readthedocs.io/en/latest/reference-core.html#child-tasks-and-cancellation
|
||||
.. _run_in_executor: https://docs.python.org/3/library/asyncio-eventloop.html#executor
|
||||
.. _Executor: https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.Executor
|
||||
|
||||
|
||||
Transparent remote function calling using *portals*
|
||||
---------------------------------------------------
|
||||
``tractor`` introduces the concept of a *portal* which is an API
|
||||
borrowed_ from ``trio``. A portal may seem similar to the idea of
|
||||
a RPC future_ except a *portal* allows invoking remote *async* functions and
|
||||
generators and intermittently blocking to receive responses. This allows
|
||||
for fully async-native IPC between actors.
|
||||
|
||||
When you invoke another actor's routines using a *portal* it looks as though
|
||||
it was called locally in the current actor. So when you see a call to
|
||||
``await portal.run()`` what you get back is what you'd expect
|
||||
to if you'd called the function directly in-process. This approach avoids
|
||||
the need to add any special RPC *proxy* objects to the library by instead just
|
||||
relying on the built-in (async) function calling semantics and protocols of Python.
|
||||
|
||||
Depending on the function type ``Portal.run()`` tries to
|
||||
correctly interface exactly like a local version of the remote
|
||||
built-in Python *function type*. Currently async functions, generators,
|
||||
and regular functions are supported. Inspiration for this API comes
|
||||
from the way execnet_ does `remote function execution`_ but without
|
||||
the client code (necessarily) having to worry about the underlying
|
||||
channels_ system or shipping code over the network.
|
||||
|
||||
This *portal* approach turns out to be paricularly exciting with the
|
||||
introduction of `asynchronous generators`_ in Python 3.6! It means that
|
||||
actors can compose nicely in a data processing pipeline.
|
||||
|
||||
As an example here's an actor that streams for 1 second from a remote async
|
||||
generator function running in a separate actor:
|
||||
|
||||
.. code:: python
|
||||
|
||||
from itertools import repeat
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def stream_forever():
|
||||
for i in repeat("I can see these little future bubble things"):
|
||||
# each yielded value is sent over the ``Channel`` to the
|
||||
# parent actor
|
||||
yield i
|
||||
await trio.sleep(0.01)
|
||||
|
||||
|
||||
async def main():
|
||||
# stream for at most 1 seconds
|
||||
with trio.move_on_after(1) as cancel_scope:
|
||||
async with tractor.open_nursery() as n:
|
||||
portal = await n.start_actor(
|
||||
f'donny',
|
||||
rpc_module_paths=[__name__],
|
||||
)
|
||||
|
||||
# this async for loop streams values from the above
|
||||
# async generator running in a separate process
|
||||
async for letter in await portal.run(__name__, 'stream_forever'):
|
||||
print(letter)
|
||||
|
||||
# we support trio's cancellation system
|
||||
assert cancel_scope.cancelled_caught
|
||||
assert n.cancelled
|
||||
|
||||
|
||||
tractor.run(main)
|
||||
|
||||
|
||||
Alright, let's get fancy.
|
||||
|
||||
Say you wanted to spawn two actors which each pulling data feeds from
|
||||
two different sources (and wanted this work spread across 2 cpus).
|
||||
You also want to aggregate these feeds, do some processing on them and then
|
||||
deliver the final result stream to a client (or in this case parent) actor
|
||||
and print the results to your screen:
|
||||
|
||||
.. code:: python
|
||||
|
||||
import time
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
# this is the first 2 actors, streamer_1 and streamer_2
|
||||
async def stream_data(seed):
|
||||
for i in range(seed):
|
||||
yield i
|
||||
await trio.sleep(0) # trigger scheduler
|
||||
|
||||
|
||||
# this is the third actor; the aggregator
|
||||
async def aggregate(seed):
|
||||
"""Ensure that the two streams we receive match but only stream
|
||||
a single set of values to the parent.
|
||||
"""
|
||||
async with tractor.open_nursery() as nursery:
|
||||
portals = []
|
||||
for i in range(1, 3):
|
||||
# fork point
|
||||
portal = await nursery.start_actor(
|
||||
name=f'streamer_{i}',
|
||||
rpc_module_paths=[__name__],
|
||||
)
|
||||
|
||||
portals.append(portal)
|
||||
|
||||
q = trio.Queue(500)
|
||||
|
||||
async def push_to_q(portal):
|
||||
async for value in await portal.run(
|
||||
__name__, 'stream_data', seed=seed
|
||||
):
|
||||
# leverage trio's built-in backpressure
|
||||
await q.put(value)
|
||||
|
||||
await q.put(None)
|
||||
print(f"FINISHED ITERATING {portal.channel.uid}")
|
||||
|
||||
# spawn 2 trio tasks to collect streams and push to a local queue
|
||||
async with trio.open_nursery() as n:
|
||||
for portal in portals:
|
||||
n.start_soon(push_to_q, portal)
|
||||
|
||||
unique_vals = set()
|
||||
async for value in q:
|
||||
if value not in unique_vals:
|
||||
unique_vals.add(value)
|
||||
# yield upwards to the spawning parent actor
|
||||
yield value
|
||||
|
||||
if value is None:
|
||||
break
|
||||
|
||||
assert value in unique_vals
|
||||
|
||||
print("FINISHED ITERATING in aggregator")
|
||||
|
||||
await nursery.cancel()
|
||||
print("WAITING on `ActorNursery` to finish")
|
||||
print("AGGREGATOR COMPLETE!")
|
||||
|
||||
|
||||
# this is the main actor and *arbiter*
|
||||
async def main():
|
||||
# a nursery which spawns "actors"
|
||||
async with tractor.open_nursery() as nursery:
|
||||
|
||||
seed = int(1e3)
|
||||
import time
|
||||
pre_start = time.time()
|
||||
|
||||
portal = await nursery.run_in_actor(
|
||||
'aggregator',
|
||||
aggregate,
|
||||
seed=seed,
|
||||
)
|
||||
|
||||
start = time.time()
|
||||
# the portal call returns exactly what you'd expect
|
||||
# as if the remote "aggregate" function was called locally
|
||||
result_stream = []
|
||||
async for value in await portal.result():
|
||||
result_stream.append(value)
|
||||
|
||||
print(f"STREAM TIME = {time.time() - start}")
|
||||
print(f"STREAM + SPAWN TIME = {time.time() - pre_start}")
|
||||
assert result_stream == list(range(seed)) + [None]
|
||||
return result_stream
|
||||
|
||||
|
||||
final_stream = tractor.run(main, arbiter_addr=('127.0.0.1', 1616))
|
||||
|
||||
|
||||
Here there's four actors running in separate processes (using all the
|
||||
cores on you machine). Two are streaming by *yielding* values from the
|
||||
``stream_data()`` async generator, one is aggregating values from
|
||||
those two in ``aggregate()`` (also an async generator) and shipping the
|
||||
single stream of unique values up the parent actor (the ``'MainProcess'``
|
||||
as ``multiprocessing`` calls it) which is running ``main()``.
|
||||
|
||||
.. _future: https://en.wikipedia.org/wiki/Futures_and_promises
|
||||
.. _borrowed:
|
||||
https://trio.readthedocs.io/en/latest/reference-core.html#getting-back-into-the-trio-thread-from-another-thread
|
||||
.. _asynchronous generators: https://www.python.org/dev/peps/pep-0525/
|
||||
.. _remote function execution: https://codespeak.net/execnet/example/test_info.html#remote-exec-a-function-avoiding-inlined-source-part-i
|
||||
.. _asyncitertools: https://github.com/vodik/asyncitertools
|
||||
|
||||
|
||||
Cancellation
|
||||
------------
|
||||
``tractor`` supports ``trio``'s cancellation_ system verbatim.
|
||||
Cancelling a nursery block cancels all actors spawned by it.
|
||||
Eventually ``tractor`` plans to support different `supervision strategies`_ like ``erlang``.
|
||||
|
||||
.. _supervision strategies: http://erlang.org/doc/man/supervisor.html#sup_flags
|
||||
|
||||
|
||||
Remote error propagation
|
||||
------------------------
|
||||
Any task invoked in a remote actor should ship any error(s) back to the calling
|
||||
actor where it is raised and expected to be dealt with. This way remote actors
|
||||
are never cancelled unless explicitly asked or there's a bug in ``tractor`` itself.
|
||||
|
||||
.. code:: python
|
||||
|
||||
async def assert_err():
|
||||
assert 0
|
||||
|
||||
|
||||
async def main():
|
||||
async with tractor.open_nursery() as n:
|
||||
real_actors = []
|
||||
for i in range(3):
|
||||
real_actors.append(await n.start_actor(
|
||||
f'actor_{i}',
|
||||
rpc_module_paths=[__name__],
|
||||
))
|
||||
|
||||
# start one actor that will fail immediately
|
||||
await n.run_in_actor('extra', assert_err)
|
||||
|
||||
# should error here with a ``RemoteActorError`` containing
|
||||
# an ``AssertionError`` and all the other actors have been cancelled
|
||||
|
||||
try:
|
||||
# also raises
|
||||
tractor.run(main)
|
||||
except tractor.RemoteActorError:
|
||||
print("Look Maa that actor failed hard, hehhh!")
|
||||
|
||||
|
||||
You'll notice the nursery cancellation conducts a *one-cancels-all*
|
||||
supervisory strategy `exactly like trio`_. The plan is to add more
|
||||
`erlang strategies`_ in the near future by allowing nurseries to accept
|
||||
a ``Supervisor`` type.
|
||||
|
||||
.. _exactly like trio: https://trio.readthedocs.io/en/latest/reference-core.html#cancellation-semantics
|
||||
.. _erlang strategies: http://learnyousomeerlang.com/supervisors
|
||||
|
||||
|
||||
Shared task state
|
||||
-----------------
|
||||
Although ``tractor`` uses a *shared-nothing* architecture between processes
|
||||
you can of course share state within an actor. ``trio`` tasks spawned via
|
||||
multiple RPC calls to an actor can access global data using the per actor
|
||||
``statespace`` dictionary:
|
||||
|
||||
.. code:: python
|
||||
|
||||
|
||||
statespace = {'doggy': 10}
|
||||
|
||||
|
||||
def check_statespace():
|
||||
# Remember this runs in a new process so no changes
|
||||
# will propagate back to the parent actor
|
||||
assert tractor.current_actor().statespace == statespace
|
||||
|
||||
|
||||
async def main():
|
||||
async with tractor.open_nursery() as n:
|
||||
await n.run_in_actor(
|
||||
'checker',
|
||||
check_statespace,
|
||||
statespace=statespace
|
||||
)
|
||||
|
||||
|
||||
Of course you don't have to use the ``statespace`` variable (it's mostly
|
||||
a convenience for passing simple data to newly spawned actors); building
|
||||
out a state sharing system per-actor is totally up to you.
|
||||
|
||||
|
||||
How do actors find each other (a poor man's *service discovery*)?
|
||||
-----------------------------------------------------------------
|
||||
Though it will be built out much more in the near future, ``tractor``
|
||||
currently keeps track of actors by ``(name: str, id: str)`` using a
|
||||
special actor called the *arbiter*. Currently the *arbiter* must exist
|
||||
on a host (or it will be created if one can't be found) and keeps a
|
||||
simple ``dict`` of actor names to sockets for discovery by other actors.
|
||||
Obviously this can be made more sophisticated (help me with it!) but for
|
||||
now it does the trick.
|
||||
|
||||
To find the arbiter from the current actor use the ``get_arbiter()`` function and to
|
||||
find an actor's socket address by name use the ``find_actor()`` function:
|
||||
|
||||
.. code:: python
|
||||
|
||||
import tractor
|
||||
|
||||
|
||||
async def main(service_name):
|
||||
|
||||
async with tractor.get_arbiter() as portal:
|
||||
print(f"Arbiter is listening on {portal.channel}")
|
||||
|
||||
async with tractor.find_actor(service_name) as sockaddr:
|
||||
print(f"my_service is found at {my_service}")
|
||||
|
||||
|
||||
tractor.run(main, service_name)
|
||||
|
||||
|
||||
The ``name`` value you should pass to ``find_actor()`` is the one you passed as the
|
||||
*first* argument to either ``tractor.run()`` or ``ActorNursery.start_actor()``.
|
||||
|
||||
|
||||
Using ``Channel`` directly (undocumented)
|
||||
-----------------------------------------
|
||||
You can use the ``Channel`` api if necessary by simply defining a
|
||||
``chan`` and ``cid`` *kwarg* in your async function definition.
|
||||
``tractor`` will treat such async functions like async generators on
|
||||
the calling side (for now anyway) such that you can push stream values
|
||||
a little more granularly if you find *yielding* values to be restrictive.
|
||||
I am purposely not documenting this feature with code because I'm not yet
|
||||
sure yet how it should be used correctly. If you'd like more details
|
||||
please feel free to ask me on the `trio gitter channel`_.
|
||||
|
||||
|
||||
Running actors standalone (without spawning)
|
||||
--------------------------------------------
|
||||
You don't have to spawn any actors using ``open_nursery()`` if you just
|
||||
want to run a single actor that connects to an existing cluster.
|
||||
All the comms and arbiter registration stuff still works. This can
|
||||
somtimes turn out being handy when debugging mult-process apps when you
|
||||
need to hop into a debugger. You just need to pass the existing
|
||||
*arbiter*'s socket address you'd like to connect to:
|
||||
|
||||
.. code:: python
|
||||
|
||||
tractor.run(main, arbiter_addr=('192.168.0.10', 1616))
|
||||
|
||||
|
||||
Enabling logging
|
||||
----------------
|
||||
Considering how complicated distributed software can become it helps to know
|
||||
what exactly it's doing (even at the lowest levels). Luckily ``tractor`` has
|
||||
tons of logging throughout the core. ``tractor`` isn't opinionated on
|
||||
how you use this information and users are expected to consume log messages in
|
||||
whichever way is appropriate for the system at hand. That being said, when hacking
|
||||
on ``tractor`` there is a prettified console formatter which you can enable to
|
||||
see what the heck is going on. Just put the following somewhere in your code:
|
||||
|
||||
.. code:: python
|
||||
|
||||
from tractor.log import get_console_log
|
||||
log = get_console_log('trace')
|
||||
|
||||
|
||||
What the future holds
|
||||
---------------------
|
||||
Stuff I'd like to see ``tractor`` do one day:
|
||||
|
||||
- erlang-like supervisors_
|
||||
- native support for zeromq_ as a channel transport
|
||||
- native `gossip protocol`_ support for service discovery and arbiter election
|
||||
- a distributed log ledger for tracking cluster behaviour
|
||||
- a slick multi-process aware debugger much like in celery_
|
||||
but with better `pdb++`_ support
|
||||
- an extensive `chaos engineering`_ test suite
|
||||
- support for reactive programming primitives and native support for asyncitertools_ like libs
|
||||
|
||||
If you're interested in tackling any of these please do shout about it on the
|
||||
`trio gitter channel`_!
|
||||
|
||||
.. _supervisors: http://learnyousomeerlang.com/supervisors
|
||||
.. _zeromq: https://en.wikipedia.org/wiki/ZeroMQ
|
||||
.. _gossip protocol: https://en.wikipedia.org/wiki/Gossip_protocol
|
||||
.. _trio gitter channel: https://gitter.im/python-trio/general
|
||||
.. _celery: http://docs.celeryproject.org/en/latest/userguide/debugging.html
|
||||
.. _pdb++: https://github.com/antocuni/pdb
|
||||
|
|
@ -1,20 +0,0 @@
|
|||
# Minimal makefile for Sphinx documentation
|
||||
#
|
||||
|
||||
# You can set these variables from the command line, and also
|
||||
# from the environment for the first two.
|
||||
SPHINXOPTS ?=
|
||||
SPHINXBUILD ?= sphinx-build
|
||||
SOURCEDIR = .
|
||||
BUILDDIR = _build
|
||||
|
||||
# Put it first so that "make" without argument is like "make help".
|
||||
help:
|
||||
@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
|
||||
|
||||
.PHONY: help Makefile
|
||||
|
||||
# Catch-all target: route all unknown targets to Sphinx using the new
|
||||
# "make mode" option. $(O) is meant as a shortcut for $(SPHINXOPTS).
|
||||
%: Makefile
|
||||
@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
|
||||
702
docs/README.rst
702
docs/README.rst
|
|
@ -1,702 +0,0 @@
|
|||
|logo| ``tractor``: distributed structurred concurrency
|
||||
|
||||
|gh_actions|
|
||||
|docs|
|
||||
|
||||
``tractor`` is a `structured concurrency`_ (SC), multi-processing_ runtime built on trio_.
|
||||
|
||||
Fundamentally, ``tractor`` provides parallelism via
|
||||
``trio``-"*actors*": independent Python **processes** (i.e.
|
||||
*non-shared-memory threads*) which can schedule ``trio`` tasks whilst
|
||||
maintaining *end-to-end SC* inside a *distributed supervision tree*.
|
||||
|
||||
Cross-process (and thus cross-host) SC is accomplished through the
|
||||
combined use of our,
|
||||
|
||||
- "actor nurseries_" which provide for spawning multiple, and
|
||||
possibly nested, Python processes each running a ``trio`` scheduled
|
||||
runtime - a call to ``trio.run()``,
|
||||
- an "SC-transitive supervision protocol" enforced as an
|
||||
IPC-message-spec encapsulating all RPC-dialogs.
|
||||
|
||||
We believe the system adheres to the `3 axioms`_ of an "`actor model`_"
|
||||
but likely **does not** look like what **you** probably *think* an "actor
|
||||
model" looks like, and that's **intentional**.
|
||||
|
||||
|
||||
Where do i start!?
|
||||
------------------
|
||||
The first step to grok ``tractor`` is to get an intermediate
|
||||
knowledge of ``trio`` and **structured concurrency** B)
|
||||
|
||||
Some great places to start are,
|
||||
|
||||
- the seminal `blog post`_
|
||||
- obviously the `trio docs`_
|
||||
- wikipedia's nascent SC_ page
|
||||
- the fancy diagrams @ libdill-docs_
|
||||
|
||||
|
||||
Features
|
||||
--------
|
||||
- **It's just** a ``trio`` API!
|
||||
- *Infinitely nesteable* process trees running embedded ``trio`` tasks.
|
||||
- Swappable, OS-specific, process spawning via multiple backends.
|
||||
- Modular IPC stack, allowing for custom interchange formats (eg.
|
||||
as offered from `msgspec`_), varied transport protocols (TCP, RUDP,
|
||||
QUIC, wireguard), and OS-env specific higher-perf primitives (UDS,
|
||||
shm-ring-buffers).
|
||||
- Optionally distributed_: all IPC and RPC APIs work over multi-host
|
||||
transports the same as local.
|
||||
- Builtin high-level streaming API that enables your app to easily
|
||||
leverage the benefits of a "`cheap or nasty`_" `(un)protocol`_.
|
||||
- A "native UX" around a multi-process safe debugger REPL using
|
||||
`pdbp`_ (a fork & fix of `pdb++`_)
|
||||
- "Infected ``asyncio``" mode: support for starting an actor's
|
||||
runtime as a `guest`_ on the ``asyncio`` loop allowing us to
|
||||
provide stringent SC-style ``trio.Task``-supervision around any
|
||||
``asyncio.Task`` spawned via our ``tractor.to_asyncio`` APIs.
|
||||
- A **very naive** and still very much work-in-progress inter-actor
|
||||
`discovery`_ sys with plans to support multiple `modern protocol`_
|
||||
approaches.
|
||||
- Various ``trio`` extension APIs via ``tractor.trionics`` such as,
|
||||
- task fan-out `broadcasting`_,
|
||||
- multi-task-single-resource-caching and fan-out-to-multi
|
||||
``__aenter__()`` APIs for ``@acm`` functions,
|
||||
- (WIP) a ``TaskMngr``: one-cancels-one style nursery supervisor.
|
||||
|
||||
|
||||
Install
|
||||
-------
|
||||
``tractor`` is still in a *alpha-near-beta-stage* for many
|
||||
of its subsystems, however we are very close to having a stable
|
||||
lowlevel runtime and API.
|
||||
|
||||
As such, it's currently recommended that you clone and install the
|
||||
repo from source::
|
||||
|
||||
pip install git+git://github.com/goodboy/tractor.git
|
||||
|
||||
|
||||
We use the very hip `uv`_ for project mgmt::
|
||||
|
||||
git clone https://github.com/goodboy/tractor.git
|
||||
cd tractor
|
||||
uv sync --dev
|
||||
uv run python examples/rpc_bidir_streaming.py
|
||||
|
||||
Consider activating a virtual/project-env before starting to hack on
|
||||
the code base::
|
||||
|
||||
# you could use plain ol' venvs
|
||||
# https://docs.astral.sh/uv/pip/environments/
|
||||
uv venv tractor_py313 --python 3.13
|
||||
|
||||
# but @goodboy prefers the more explicit (and shell agnostic)
|
||||
# https://docs.astral.sh/uv/configuration/environment/#uv_project_environment
|
||||
UV_PROJECT_ENVIRONMENT="tractor_py313
|
||||
|
||||
# hint hint, enter @goodboy's fave shell B)
|
||||
uv run --dev xonsh
|
||||
|
||||
Alongside all this we ofc offer "releases" on PyPi::
|
||||
|
||||
pip install tractor
|
||||
|
||||
Just note that YMMV since the main git branch is often much further
|
||||
ahead then any latest release.
|
||||
|
||||
|
||||
Example codez
|
||||
-------------
|
||||
In ``tractor``'s (very lacking) documention we prefer to point to
|
||||
example scripts in the repo over duplicating them in docs, but with
|
||||
that in mind here are some definitive snippets to try and hook you
|
||||
into digging deeper.
|
||||
|
||||
|
||||
Run a func in a process
|
||||
***********************
|
||||
Use ``trio``'s style of focussing on *tasks as functions*:
|
||||
|
||||
.. code:: python
|
||||
|
||||
"""
|
||||
Run with a process monitor from a terminal using::
|
||||
|
||||
$TERM -e watch -n 0.1 "pstree -a $$" \
|
||||
& python examples/parallelism/single_func.py \
|
||||
&& kill $!
|
||||
|
||||
"""
|
||||
import os
|
||||
|
||||
import tractor
|
||||
import trio
|
||||
|
||||
|
||||
async def burn_cpu():
|
||||
|
||||
pid = os.getpid()
|
||||
|
||||
# burn a core @ ~ 50kHz
|
||||
for _ in range(50000):
|
||||
await trio.sleep(1/50000/50)
|
||||
|
||||
return os.getpid()
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.run_in_actor(burn_cpu)
|
||||
|
||||
# burn rubber in the parent too
|
||||
await burn_cpu()
|
||||
|
||||
# wait on result from target function
|
||||
pid = await portal.result()
|
||||
|
||||
# end of nursery block
|
||||
print(f"Collected subproc {pid}")
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
||||
|
||||
This runs ``burn_cpu()`` in a new process and reaps it on completion
|
||||
of the nursery block.
|
||||
|
||||
If you only need to run a sync function and retreive a single result, you
|
||||
might want to check out `trio-parallel`_.
|
||||
|
||||
|
||||
Zombie safe: self-destruct a process tree
|
||||
*****************************************
|
||||
``tractor`` tries to protect you from zombies, no matter what.
|
||||
|
||||
.. code:: python
|
||||
|
||||
"""
|
||||
Run with a process monitor from a terminal using::
|
||||
|
||||
$TERM -e watch -n 0.1 "pstree -a $$" \
|
||||
& python examples/parallelism/we_are_processes.py \
|
||||
&& kill $!
|
||||
|
||||
"""
|
||||
from multiprocessing import cpu_count
|
||||
import os
|
||||
|
||||
import tractor
|
||||
import trio
|
||||
|
||||
|
||||
async def target():
|
||||
print(
|
||||
f"Yo, i'm '{tractor.current_actor().name}' "
|
||||
f"running in pid {os.getpid()}"
|
||||
)
|
||||
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
for i in range(cpu_count()):
|
||||
await n.run_in_actor(target, name=f'worker_{i}')
|
||||
|
||||
print('This process tree will self-destruct in 1 sec...')
|
||||
await trio.sleep(1)
|
||||
|
||||
# raise an error in root actor/process and trigger
|
||||
# reaping of all minions
|
||||
raise Exception('Self Destructed')
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
try:
|
||||
trio.run(main)
|
||||
except Exception:
|
||||
print('Zombies Contained')
|
||||
|
||||
|
||||
If you can create zombie child processes (without using a system signal)
|
||||
it **is a bug**.
|
||||
|
||||
|
||||
"Native" multi-process debugging
|
||||
********************************
|
||||
Using the magic of `pdbp`_ and our internal IPC, we've
|
||||
been able to create a native feeling debugging experience for
|
||||
any (sub-)process in your ``tractor`` tree.
|
||||
|
||||
.. code:: python
|
||||
|
||||
from os import getpid
|
||||
|
||||
import tractor
|
||||
import trio
|
||||
|
||||
|
||||
async def breakpoint_forever():
|
||||
"Indefinitely re-enter debugger in child actor."
|
||||
while True:
|
||||
yield 'yo'
|
||||
await tractor.breakpoint()
|
||||
|
||||
|
||||
async def name_error():
|
||||
"Raise a ``NameError``"
|
||||
getattr(doggypants)
|
||||
|
||||
|
||||
async def main():
|
||||
"""Test breakpoint in a streaming actor.
|
||||
"""
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
loglevel='error',
|
||||
) as n:
|
||||
|
||||
p0 = await n.start_actor('bp_forever', enable_modules=[__name__])
|
||||
p1 = await n.start_actor('name_error', enable_modules=[__name__])
|
||||
|
||||
# retreive results
|
||||
stream = await p0.run(breakpoint_forever)
|
||||
await p1.run(name_error)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
||||
|
||||
You can run this with::
|
||||
|
||||
>>> python examples/debugging/multi_daemon_subactors.py
|
||||
|
||||
And, yes, there's a built-in crash handling mode B)
|
||||
|
||||
We're hoping to add a respawn-from-repl system soon!
|
||||
|
||||
|
||||
SC compatible bi-directional streaming
|
||||
**************************************
|
||||
Yes, you saw it here first; we provide 2-way streams
|
||||
with reliable, transitive setup/teardown semantics.
|
||||
|
||||
Our nascent api is remniscent of ``trio.Nursery.start()``
|
||||
style invocation:
|
||||
|
||||
.. code:: python
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def simple_rpc(
|
||||
|
||||
ctx: tractor.Context,
|
||||
data: int,
|
||||
|
||||
) -> None:
|
||||
'''Test a small ping-pong 2-way streaming server.
|
||||
|
||||
'''
|
||||
# signal to parent that we're up much like
|
||||
# ``trio_typing.TaskStatus.started()``
|
||||
await ctx.started(data + 1)
|
||||
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
count = 0
|
||||
async for msg in stream:
|
||||
|
||||
assert msg == 'ping'
|
||||
await stream.send('pong')
|
||||
count += 1
|
||||
|
||||
else:
|
||||
assert count == 10
|
||||
|
||||
|
||||
async def main() -> None:
|
||||
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.start_actor(
|
||||
'rpc_server',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
# XXX: this syntax requires py3.9
|
||||
async with (
|
||||
|
||||
portal.open_context(
|
||||
simple_rpc,
|
||||
data=10,
|
||||
) as (ctx, sent),
|
||||
|
||||
ctx.open_stream() as stream,
|
||||
):
|
||||
|
||||
assert sent == 11
|
||||
|
||||
count = 0
|
||||
# receive msgs using async for style
|
||||
await stream.send('ping')
|
||||
|
||||
async for msg in stream:
|
||||
assert msg == 'pong'
|
||||
await stream.send('ping')
|
||||
count += 1
|
||||
|
||||
if count >= 9:
|
||||
break
|
||||
|
||||
|
||||
# explicitly teardown the daemon-actor
|
||||
await portal.cancel_actor()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
||||
|
||||
See original proposal and discussion in `#53`_ as well
|
||||
as follow up improvements in `#223`_ that we'd love to
|
||||
hear your thoughts on!
|
||||
|
||||
.. _#53: https://github.com/goodboy/tractor/issues/53
|
||||
.. _#223: https://github.com/goodboy/tractor/issues/223
|
||||
|
||||
|
||||
Worker poolz are easy peasy
|
||||
***************************
|
||||
The initial ask from most new users is *"how do I make a worker
|
||||
pool thing?"*.
|
||||
|
||||
``tractor`` is built to handle any SC (structured concurrent) process
|
||||
tree you can imagine; a "worker pool" pattern is a trivial special
|
||||
case.
|
||||
|
||||
We have a `full worker pool re-implementation`_ of the std-lib's
|
||||
``concurrent.futures.ProcessPoolExecutor`` example for reference.
|
||||
|
||||
You can run it like so (from this dir) to see the process tree in
|
||||
real time::
|
||||
|
||||
$TERM -e watch -n 0.1 "pstree -a $$" \
|
||||
& python examples/parallelism/concurrent_actors_primes.py \
|
||||
&& kill $!
|
||||
|
||||
This uses no extra threads, fancy semaphores or futures; all we need
|
||||
is ``tractor``'s IPC!
|
||||
|
||||
"Infected ``asyncio``" mode
|
||||
***************************
|
||||
Have a bunch of ``asyncio`` code you want to force to be SC at the process level?
|
||||
|
||||
Check out our experimental system for `guest`_-mode controlled
|
||||
``asyncio`` actors:
|
||||
|
||||
.. code:: python
|
||||
|
||||
import asyncio
|
||||
from statistics import mean
|
||||
import time
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def aio_echo_server(
|
||||
to_trio: trio.MemorySendChannel,
|
||||
from_trio: asyncio.Queue,
|
||||
) -> None:
|
||||
|
||||
# a first message must be sent **from** this ``asyncio``
|
||||
# task or the ``trio`` side will never unblock from
|
||||
# ``tractor.to_asyncio.open_channel_from():``
|
||||
to_trio.send_nowait('start')
|
||||
|
||||
# XXX: this uses an ``from_trio: asyncio.Queue`` currently but we
|
||||
# should probably offer something better.
|
||||
while True:
|
||||
# echo the msg back
|
||||
to_trio.send_nowait(await from_trio.get())
|
||||
await asyncio.sleep(0)
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def trio_to_aio_echo_server(
|
||||
ctx: tractor.Context,
|
||||
):
|
||||
# this will block until the ``asyncio`` task sends a "first"
|
||||
# message.
|
||||
async with tractor.to_asyncio.open_channel_from(
|
||||
aio_echo_server,
|
||||
) as (first, chan):
|
||||
|
||||
assert first == 'start'
|
||||
await ctx.started(first)
|
||||
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
async for msg in stream:
|
||||
await chan.send(msg)
|
||||
|
||||
out = await chan.receive()
|
||||
# echo back to parent actor-task
|
||||
await stream.send(out)
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery() as n:
|
||||
p = await n.start_actor(
|
||||
'aio_server',
|
||||
enable_modules=[__name__],
|
||||
infect_asyncio=True,
|
||||
)
|
||||
async with p.open_context(
|
||||
trio_to_aio_echo_server,
|
||||
) as (ctx, first):
|
||||
|
||||
assert first == 'start'
|
||||
|
||||
count = 0
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
delays = []
|
||||
send = time.time()
|
||||
|
||||
await stream.send(count)
|
||||
async for msg in stream:
|
||||
recv = time.time()
|
||||
delays.append(recv - send)
|
||||
assert msg == count
|
||||
count += 1
|
||||
send = time.time()
|
||||
await stream.send(count)
|
||||
|
||||
if count >= 1e3:
|
||||
break
|
||||
|
||||
print(f'mean round trip rate (Hz): {1/mean(delays)}')
|
||||
await p.cancel_actor()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
||||
|
||||
Yes, we spawn a python process, run ``asyncio``, start ``trio`` on the
|
||||
``asyncio`` loop, then send commands to the ``trio`` scheduled tasks to
|
||||
tell ``asyncio`` tasks what to do XD
|
||||
|
||||
We need help refining the `asyncio`-side channel API to be more
|
||||
`trio`-like. Feel free to sling your opinion in `#273`_!
|
||||
|
||||
|
||||
.. _#273: https://github.com/goodboy/tractor/issues/273
|
||||
|
||||
|
||||
Higher level "cluster" APIs
|
||||
***************************
|
||||
To be extra terse the ``tractor`` devs have started hacking some "higher
|
||||
level" APIs for managing actor trees/clusters. These interfaces should
|
||||
generally be condsidered provisional for now but we encourage you to try
|
||||
them and provide feedback. Here's a new API that let's you quickly
|
||||
spawn a flat cluster:
|
||||
|
||||
.. code:: python
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def sleepy_jane():
|
||||
uid = tractor.current_actor().uid
|
||||
print(f'Yo i am actor {uid}')
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
async def main():
|
||||
'''
|
||||
Spawn a flat actor cluster, with one process per
|
||||
detected core.
|
||||
|
||||
'''
|
||||
portal_map: dict[str, tractor.Portal]
|
||||
results: dict[str, str]
|
||||
|
||||
# look at this hip new syntax!
|
||||
async with (
|
||||
|
||||
tractor.open_actor_cluster(
|
||||
modules=[__name__]
|
||||
) as portal_map,
|
||||
|
||||
trio.open_nursery() as n,
|
||||
):
|
||||
|
||||
for (name, portal) in portal_map.items():
|
||||
n.start_soon(portal.run, sleepy_jane)
|
||||
|
||||
await trio.sleep(0.5)
|
||||
|
||||
# kill the cluster with a cancel
|
||||
raise KeyboardInterrupt
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
try:
|
||||
trio.run(main)
|
||||
except KeyboardInterrupt:
|
||||
pass
|
||||
|
||||
|
||||
.. _full worker pool re-implementation: https://github.com/goodboy/tractor/blob/master/examples/parallelism/concurrent_actors_primes.py
|
||||
|
||||
|
||||
Under the hood
|
||||
--------------
|
||||
``tractor`` is an attempt to pair trionic_ `structured concurrency`_ with
|
||||
distributed Python. You can think of it as a ``trio``
|
||||
*-across-processes* or simply as an opinionated replacement for the
|
||||
stdlib's ``multiprocessing`` but built on async programming primitives
|
||||
from the ground up.
|
||||
|
||||
Don't be scared off by this description. ``tractor`` **is just** ``trio``
|
||||
but with nurseries for process management and cancel-able streaming IPC.
|
||||
If you understand how to work with ``trio``, ``tractor`` will give you
|
||||
the parallelism you may have been needing.
|
||||
|
||||
|
||||
Wait, huh?! I thought "actors" have messages, and mailboxes and stuff?!
|
||||
***********************************************************************
|
||||
Let's stop and ask how many canon actor model papers have you actually read ;)
|
||||
|
||||
From our experience many "actor systems" aren't really "actor models"
|
||||
since they **don't adhere** to the `3 axioms`_ and pay even less
|
||||
attention to the problem of *unbounded non-determinism* (which was the
|
||||
whole point for creation of the model in the first place).
|
||||
|
||||
From the author's mouth, **the only thing required** is `adherance to`_
|
||||
the `3 axioms`_, *and that's it*.
|
||||
|
||||
``tractor`` adheres to said base requirements of an "actor model"::
|
||||
|
||||
In response to a message, an actor may:
|
||||
|
||||
- send a finite number of new messages
|
||||
- create a finite number of new actors
|
||||
- designate a new behavior to process subsequent messages
|
||||
|
||||
|
||||
**and** requires *no further api changes* to accomplish this.
|
||||
|
||||
If you want do debate this further please feel free to chime in on our
|
||||
chat or discuss on one of the following issues *after you've read
|
||||
everything in them*:
|
||||
|
||||
- https://github.com/goodboy/tractor/issues/210
|
||||
- https://github.com/goodboy/tractor/issues/18
|
||||
|
||||
|
||||
Let's clarify our parlance
|
||||
**************************
|
||||
Whether or not ``tractor`` has "actors" underneath should be mostly
|
||||
irrelevant to users other then for referring to the interactions of our
|
||||
primary runtime primitives: each Python process + ``trio.run()``
|
||||
+ surrounding IPC machinery. These are our high level, base
|
||||
*runtime-units-of-abstraction* which both *are* (as much as they can
|
||||
be in Python) and will be referred to as our *"actors"*.
|
||||
|
||||
The main goal of ``tractor`` is is to allow for highly distributed
|
||||
software that, through the adherence to *structured concurrency*,
|
||||
results in systems which fail in predictable, recoverable and maybe even
|
||||
understandable ways; being an "actor model" is just one way to describe
|
||||
properties of the system.
|
||||
|
||||
|
||||
What's on the TODO:
|
||||
-------------------
|
||||
Help us push toward the future of distributed `Python`.
|
||||
|
||||
- Erlang-style supervisors via composed context managers (see `#22
|
||||
<https://github.com/goodboy/tractor/issues/22>`_)
|
||||
- Typed messaging protocols (ex. via ``msgspec.Struct``, see `#36
|
||||
<https://github.com/goodboy/tractor/issues/36>`_)
|
||||
- Typed capability-based (dialog) protocols ( see `#196
|
||||
<https://github.com/goodboy/tractor/issues/196>`_ with draft work
|
||||
started in `#311 <https://github.com/goodboy/tractor/pull/311>`_)
|
||||
- We **recently disabled CI-testing on windows** and need help getting
|
||||
it running again! (see `#327
|
||||
<https://github.com/goodboy/tractor/pull/327>`_). **We do have windows
|
||||
support** (and have for quite a while) but since no active hacker
|
||||
exists in the user-base to help test on that OS, for now we're not
|
||||
actively maintaining testing due to the added hassle and general
|
||||
latency..
|
||||
|
||||
|
||||
Feel like saying hi?
|
||||
--------------------
|
||||
This project is very much coupled to the ongoing development of
|
||||
``trio`` (i.e. ``tractor`` gets most of its ideas from that brilliant
|
||||
community). If you want to help, have suggestions or just want to
|
||||
say hi, please feel free to reach us in our `matrix channel`_. If
|
||||
matrix seems too hip, we're also mostly all in the the `trio gitter
|
||||
channel`_!
|
||||
|
||||
.. _structured concurrent: https://trio.discourse.group/t/concise-definition-of-structured-concurrency/228
|
||||
.. _distributed: https://en.wikipedia.org/wiki/Distributed_computing
|
||||
.. _multi-processing: https://en.wikipedia.org/wiki/Multiprocessing
|
||||
.. _trio: https://github.com/python-trio/trio
|
||||
.. _nurseries: https://vorpus.org/blog/notes-on-structured-concurrency-or-go-statement-considered-harmful/#nurseries-a-structured-replacement-for-go-statements
|
||||
.. _actor model: https://en.wikipedia.org/wiki/Actor_model
|
||||
.. _trionic: https://trio.readthedocs.io/en/latest/design.html#high-level-design-principles
|
||||
.. _async sandwich: https://trio.readthedocs.io/en/latest/tutorial.html#async-sandwich
|
||||
.. _3 axioms: https://www.youtube.com/watch?v=7erJ1DV_Tlo&t=162s
|
||||
.. .. _3 axioms: https://en.wikipedia.org/wiki/Actor_model#Fundamental_concepts
|
||||
.. _adherance to: https://www.youtube.com/watch?v=7erJ1DV_Tlo&t=1821s
|
||||
.. _trio gitter channel: https://gitter.im/python-trio/general
|
||||
.. _matrix channel: https://matrix.to/#/!tractor:matrix.org
|
||||
.. _broadcasting: https://github.com/goodboy/tractor/pull/229
|
||||
.. _modern procotol: https://en.wikipedia.org/wiki/Rendezvous_protocol
|
||||
.. _pdbp: https://github.com/mdmintz/pdbp
|
||||
.. _pdb++: https://github.com/pdbpp/pdbpp
|
||||
.. _cheap or nasty: https://zguide.zeromq.org/docs/chapter7/#The-Cheap-or-Nasty-Pattern
|
||||
.. _(un)protocol: https://zguide.zeromq.org/docs/chapter7/#Unprotocols
|
||||
.. _discovery: https://zguide.zeromq.org/docs/chapter8/#Discovery
|
||||
.. _modern protocol: https://en.wikipedia.org/wiki/Rendezvous_protocol
|
||||
.. _messages: https://en.wikipedia.org/wiki/Message_passing
|
||||
.. _trio docs: https://trio.readthedocs.io/en/latest/
|
||||
.. _blog post: https://vorpus.org/blog/notes-on-structured-concurrency-or-go-statement-considered-harmful/
|
||||
.. _structured concurrency: https://en.wikipedia.org/wiki/Structured_concurrency
|
||||
.. _SC: https://en.wikipedia.org/wiki/Structured_concurrency
|
||||
.. _libdill-docs: https://sustrik.github.io/libdill/structured-concurrency.html
|
||||
.. _unrequirements: https://en.wikipedia.org/wiki/Actor_model#Direct_communication_and_asynchrony
|
||||
.. _async generators: https://www.python.org/dev/peps/pep-0525/
|
||||
.. _trio-parallel: https://github.com/richardsheridan/trio-parallel
|
||||
.. _uv: https://docs.astral.sh/uv/
|
||||
.. _msgspec: https://jcristharif.com/msgspec/
|
||||
.. _guest: https://trio.readthedocs.io/en/stable/reference-lowlevel.html?highlight=guest%20mode#using-guest-mode-to-run-trio-on-top-of-other-event-loops
|
||||
|
||||
|
||||
.. |gh_actions| image:: https://img.shields.io/endpoint.svg?url=https%3A%2F%2Factions-badge.atrox.dev%2Fgoodboy%2Ftractor%2Fbadge&style=popout-square
|
||||
:target: https://actions-badge.atrox.dev/goodboy/tractor/goto
|
||||
|
||||
.. |docs| image:: https://readthedocs.org/projects/tractor/badge/?version=latest
|
||||
:target: https://tractor.readthedocs.io/en/latest/?badge=latest
|
||||
:alt: Documentation Status
|
||||
|
||||
.. |logo| image:: _static/tractor_logo_side.svg
|
||||
:width: 250
|
||||
:align: middle
|
||||
|
|
@ -1,458 +0,0 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<!-- Generator: Adobe Illustrator 24.2.1, SVG Export Plug-In . SVG Version: 6.00 Build 0) -->
|
||||
<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
|
||||
viewBox="0 0 2670 1980" style="enable-background:new 0 0 2670 1980;" xml:space="preserve">
|
||||
<style type="text/css">
|
||||
.st0{fill:#0A0A0A;}
|
||||
.st1{fill:#FCFCFB;}
|
||||
</style>
|
||||
<g>
|
||||
<path class="st0" d="M2275.3,1000.1c-0.1,2.3,0,4.7,0,7c0,189.3,0,378.7,0,568c0,6,0.1,12.1-0.8,17.9c-2.4,15.2-12.9,17.4-23.6,10
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||||
c-45.4-31-91.2-61.4-136.9-91.9l-30.1-20.3c-9.8-6.3-19.2-13.2-29.2-19.3c-6.7-4.1-9.8-9.7-9.9-17.2c-0.1-9.3-0.6-18.7-0.3-28
|
||||
c0.2-7.3-1.7-13-6.5-19c-18.6-23.3-36.2-47.3-56.9-69c-18-18.8-36.7-36.8-56.4-53.8c-31.8-27.5-65.4-52.7-101-74.9
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||||
c-32.7-20.4-66.8-38.4-102.2-54c-50.7-22.4-103.2-39.2-157.1-51.5c-36.7-8.4-73.8-14.4-111.2-18.5c-34.5-3.8-69-6.5-103.7-5.8
|
||||
c-23.1,0.5-46.2-1.3-69.3,0.4c-22.9,1.8-45.9,3-68.7,5.6c-72.7,8.4-143.7,24.6-212.1,50.6c-65.5,24.8-127.4,57-184.9,97.4
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||||
c-46.8,32.8-90.1,69.8-129.5,111.1c-18.1,19-35.1,39.2-50.5,60.6c-3.9,5.5-5.5,11-5.3,17.6c0.4,9.3,0,18.7,0,28
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|
||||
</g>
|
||||
</svg>
|
||||
|
Before Width: | Height: | Size: 48 KiB |
105
docs/conf.py
105
docs/conf.py
|
|
@ -1,105 +0,0 @@
|
|||
# Configuration file for the Sphinx documentation builder.
|
||||
#
|
||||
# This file only contains a selection of the most common options. For a full
|
||||
# list see the documentation:
|
||||
# https://www.sphinx-doc.org/en/master/usage/configuration.html
|
||||
|
||||
# -- Path setup --------------------------------------------------------------
|
||||
|
||||
# If extensions (or modules to document with autodoc) are in another directory,
|
||||
# add these directories to sys.path here. If the directory is relative to the
|
||||
# documentation root, use os.path.abspath to make it absolute, like shown here.
|
||||
#
|
||||
# import os
|
||||
# import sys
|
||||
# sys.path.insert(0, os.path.abspath('.'))
|
||||
|
||||
# Warn about all references to unknown targets
|
||||
nitpicky = True
|
||||
|
||||
# The master toctree document.
|
||||
master_doc = 'index'
|
||||
|
||||
# -- Project information -----------------------------------------------------
|
||||
|
||||
project = 'tractor'
|
||||
copyright = '2018, Tyler Goodlet'
|
||||
author = 'Tyler Goodlet'
|
||||
|
||||
# The full version, including alpha/beta/rc tags
|
||||
release = '0.0.0a0.dev0'
|
||||
|
||||
# -- General configuration ---------------------------------------------------
|
||||
|
||||
# Add any Sphinx extension module names here, as strings. They can be
|
||||
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
|
||||
# ones.
|
||||
extensions = [
|
||||
'sphinx.ext.autodoc',
|
||||
'sphinx.ext.intersphinx',
|
||||
'sphinx.ext.todo',
|
||||
]
|
||||
|
||||
# Add any paths that contain templates here, relative to this directory.
|
||||
templates_path = ['_templates']
|
||||
|
||||
# List of patterns, relative to source directory, that match files and
|
||||
# directories to ignore when looking for source files.
|
||||
# This pattern also affects html_static_path and html_extra_path.
|
||||
exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
|
||||
|
||||
|
||||
# -- Options for HTML output -------------------------------------------------
|
||||
|
||||
# The theme to use for HTML and HTML Help pages. See the documentation for
|
||||
# a list of builtin themes.
|
||||
#
|
||||
html_theme = 'sphinx_book_theme'
|
||||
|
||||
pygments_style = 'algol_nu'
|
||||
|
||||
# Theme options are theme-specific and customize the look and feel of a theme
|
||||
# further. For a list of options available for each theme, see the
|
||||
# documentation.
|
||||
html_theme_options = {
|
||||
# 'logo': 'tractor_logo_side.svg',
|
||||
# 'description': 'Structured concurrent "actors"',
|
||||
"repository_url": "https://github.com/goodboy/tractor",
|
||||
"use_repository_button": True,
|
||||
"home_page_in_toc": False,
|
||||
"show_toc_level": 1,
|
||||
"path_to_docs": "docs",
|
||||
|
||||
}
|
||||
html_sidebars = {
|
||||
"**": [
|
||||
"sbt-sidebar-nav.html",
|
||||
# "sidebar-search-bs.html",
|
||||
# 'localtoc.html',
|
||||
],
|
||||
# 'logo.html',
|
||||
# 'github.html',
|
||||
# 'relations.html',
|
||||
# 'searchbox.html'
|
||||
# ]
|
||||
}
|
||||
|
||||
# doesn't seem to work?
|
||||
# extra_navbar = "<p>nextttt-gennnnn</p>"
|
||||
|
||||
html_title = ''
|
||||
html_logo = '_static/tractor_logo_side.svg'
|
||||
html_favicon = '_static/tractor_logo_side.svg'
|
||||
# show_navbar_depth = 1
|
||||
|
||||
# Add any paths that contain custom static files (such as style sheets) here,
|
||||
# relative to this directory. They are copied after the builtin static files,
|
||||
# so a file named "default.css" will overwrite the builtin "default.css".
|
||||
html_static_path = ['_static']
|
||||
|
||||
# Example configuration for intersphinx: refer to the Python standard library.
|
||||
intersphinx_mapping = {
|
||||
"python": ("https://docs.python.org/3", None),
|
||||
"pytest": ("https://docs.pytest.org/en/latest", None),
|
||||
"setuptools": ("https://setuptools.readthedocs.io/en/latest", None),
|
||||
}
|
||||
|
|
@ -1,51 +0,0 @@
|
|||
Hot tips for ``tractor`` hackers
|
||||
================================
|
||||
|
||||
This is a WIP guide for newcomers to the project mostly to do with
|
||||
dev, testing, CI and release gotchas, reminders and best practises.
|
||||
|
||||
``tractor`` is a fairly novel project compared to most since it is
|
||||
effectively a new way of doing distributed computing in Python and is
|
||||
much closer to working with an "application level runtime" (like erlang
|
||||
OTP or scala's akka project) then it is a traditional Python library.
|
||||
As such, having an arsenal of tools and recipes for figuring out the
|
||||
right way to debug problems when they do arise is somewhat of
|
||||
a necessity.
|
||||
|
||||
|
||||
Making a Release
|
||||
----------------
|
||||
We currently do nothing special here except the traditional
|
||||
PyPa release recipe as in `documented by twine`_. I personally
|
||||
create sub-dirs within the generated `dist/` with an explicit
|
||||
release name such as `alpha3/` when there's been a sequence of
|
||||
releases I've made, but it really is up to you how you like to
|
||||
organize generated sdists locally.
|
||||
|
||||
The resulting build cmds are approximately:
|
||||
|
||||
.. code:: bash
|
||||
|
||||
python setup.py sdist -d ./dist/XXX.X/
|
||||
|
||||
twine upload -r testpypi dist/XXX.X/*
|
||||
|
||||
twine upload dist/XXX.X/*
|
||||
|
||||
|
||||
|
||||
.. _documented by twine: https://twine.readthedocs.io/en/latest/#using-twine
|
||||
|
||||
|
||||
Debugging and monitoring actor trees
|
||||
------------------------------------
|
||||
TODO: but there are tips in the readme for some terminal commands
|
||||
which can be used to see the process trees easily on Linux.
|
||||
|
||||
|
||||
Using the log system to trace `trio` task flow
|
||||
----------------------------------------------
|
||||
TODO: the logging system is meant to be oriented around
|
||||
stack "layers" of the runtime such that you can track
|
||||
"logical abstraction layers" in the code such as errors, cancellation,
|
||||
IPC and streaming, and the low level transport and wire protocols.
|
||||
|
|
@ -1,109 +0,0 @@
|
|||
tractor
|
||||
=======
|
||||
The Python async-native multi-core system *you always wanted*.
|
||||
|
||||
|
||||
|gh_actions|
|
||||
|docs|
|
||||
|
||||
.. _actor model: https://en.wikipedia.org/wiki/Actor_model
|
||||
.. _trio: https://github.com/python-trio/trio
|
||||
.. _multi-processing: https://en.wikipedia.org/wiki/Multiprocessing
|
||||
.. _trionic: https://trio.readthedocs.io/en/latest/design.html#high-level-design-principles
|
||||
.. _async sandwich: https://trio.readthedocs.io/en/latest/tutorial.html#async-sandwich
|
||||
.. _structured concurrent: https://trio.discourse.group/t/concise-definition-of-structured-concurrency/228
|
||||
|
||||
|
||||
``tractor`` is a `structured concurrent`_ "`actor model`_" built on trio_ and multi-processing_.
|
||||
|
||||
It is an attempt to pair trionic_ `structured concurrency`_ with
|
||||
distributed Python. You can think of it as a ``trio``
|
||||
*-across-processes* or simply as an opinionated replacement for the
|
||||
stdlib's ``multiprocessing`` but built on async programming primitives
|
||||
from the ground up.
|
||||
|
||||
Don't be scared off by this description. ``tractor`` **is just ``trio``**
|
||||
but with nurseries for process management and cancel-able IPC.
|
||||
If you understand how to work with ``trio``, ``tractor`` will give you
|
||||
the parallelism you've been missing.
|
||||
|
||||
``tractor``'s nurseries let you spawn ``trio`` *"actors"*: new Python
|
||||
processes which each run a ``trio`` scheduled task tree (also known as
|
||||
an `async sandwich`_ - a call to ``trio.run()``). That is, each
|
||||
"*Actor*" is a new process plus a ``trio`` runtime.
|
||||
|
||||
"Actors" communicate by exchanging asynchronous messages_ and avoid
|
||||
sharing state. The intention of this model is to allow for highly
|
||||
distributed software that, through the adherence to *structured
|
||||
concurrency*, results in systems which fail in predictable and
|
||||
recoverable ways.
|
||||
|
||||
The first step to grok ``tractor`` is to get the basics of ``trio`` down.
|
||||
A great place to start is the `trio docs`_ and this `blog post`_.
|
||||
|
||||
.. _messages: https://en.wikipedia.org/wiki/Message_passing
|
||||
.. _trio docs: https://trio.readthedocs.io/en/latest/
|
||||
.. _blog post: https://vorpus.org/blog/notes-on-structured-concurrency-or-go-statement-considered-harmful/
|
||||
.. _structured concurrency: https://vorpus.org/blog/notes-on-structured-concurrency-or-go-statement-considered-harmful/
|
||||
.. _3 axioms: https://en.wikipedia.org/wiki/Actor_model#Fundamental_concepts
|
||||
.. _unrequirements: https://en.wikipedia.org/wiki/Actor_model#Direct_communication_and_asynchrony
|
||||
.. _async generators: https://www.python.org/dev/peps/pep-0525/
|
||||
|
||||
|
||||
Install
|
||||
-------
|
||||
No PyPi release yet!
|
||||
|
||||
::
|
||||
|
||||
pip install git+git://github.com/goodboy/tractor.git
|
||||
|
||||
|
||||
Alluring Features
|
||||
-----------------
|
||||
- **It's just** ``trio``, but with SC applied to processes (aka "actors")
|
||||
- Infinitely nesteable process trees
|
||||
- Built-in API for inter-process streaming
|
||||
- A (first ever?) "native" multi-core debugger for Python using `pdb++`_
|
||||
- (Soon to land) ``asyncio`` support allowing for "infected" actors where
|
||||
`trio` drives the `asyncio` scheduler via the astounding "`guest mode`_"
|
||||
|
||||
|
||||
Example: self-destruct a process tree
|
||||
-------------------------------------
|
||||
.. literalinclude:: ../../examples/parallelism/we_are_processes.py
|
||||
:language: python
|
||||
|
||||
|
||||
The example you're probably after...
|
||||
------------------------------------
|
||||
It seems the initial query from most new users is "how do I make a worker
|
||||
pool thing?".
|
||||
|
||||
``tractor`` is built to handle any SC process tree you can
|
||||
imagine; the "worker pool" pattern is a trivial special case:
|
||||
|
||||
.. literalinclude:: ../../examples/parallelism/concurrent_actors_primes.py
|
||||
:language: python
|
||||
|
||||
|
||||
Feel like saying hi?
|
||||
--------------------
|
||||
This project is very much coupled to the ongoing development of
|
||||
``trio`` (i.e. ``tractor`` gets most of its ideas from that brilliant
|
||||
community). If you want to help, have suggestions or just want to
|
||||
say hi, please feel free to reach us in our `matrix channel`_. If
|
||||
matrix seems too hip, we're also mostly all in the the `trio gitter
|
||||
channel`_!
|
||||
|
||||
.. _trio gitter channel: https://gitter.im/python-trio/general
|
||||
.. _matrix channel: https://matrix.to/#/!tractor:matrix.org
|
||||
.. _pdb++: https://github.com/pdbpp/pdbpp
|
||||
.. _guest mode: https://trio.readthedocs.io/en/stable/reference-lowlevel.html?highlight=guest%20mode#using-guest-mode-to-run-trio-on-top-of-other-event-loops
|
||||
|
||||
|
||||
.. |gh_actions| image:: https://img.shields.io/endpoint.svg?url=https%3A%2F%2Factions-badge.atrox.dev%2Fgoodboy%2Ftractor%2Fbadge&style=popout-square
|
||||
:target: https://actions-badge.atrox.dev/goodboy/tractor/goto
|
||||
.. |docs| image:: https://readthedocs.org/projects/tractor/badge/?version=latest
|
||||
:target: https://tractor.readthedocs.io/en/latest/?badge=latest
|
||||
:alt: Documentation Status
|
||||
|
|
@ -1,51 +0,0 @@
|
|||
# Configuration file for the Sphinx documentation builder.
|
||||
|
||||
# this config is for the rst generation extension and thus
|
||||
# requires only basic settings:
|
||||
# https://github.com/sphinx-contrib/restbuilder
|
||||
|
||||
# -- Path setup --------------------------------------------------------------
|
||||
|
||||
# If extensions (or modules to document with autodoc) are in another directory,
|
||||
# add these directories to sys.path here. If the directory is relative to the
|
||||
# documentation root, use os.path.abspath to make it absolute, like shown here.
|
||||
#
|
||||
# import os
|
||||
# import sys
|
||||
# sys.path.insert(0, os.path.abspath('.'))
|
||||
|
||||
# Warn about all references to unknown targets
|
||||
nitpicky = True
|
||||
|
||||
# The master toctree document.
|
||||
master_doc = '_sphinx_readme'
|
||||
|
||||
# -- Project information -----------------------------------------------------
|
||||
|
||||
project = 'tractor'
|
||||
copyright = '2018, Tyler Goodlet'
|
||||
author = 'Tyler Goodlet'
|
||||
|
||||
# The full version, including alpha/beta/rc tags
|
||||
release = '0.0.0a0.dev0'
|
||||
|
||||
# -- General configuration ---------------------------------------------------
|
||||
|
||||
# Add any Sphinx extension module names here, as strings. They can be
|
||||
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
|
||||
# ones.
|
||||
extensions = [
|
||||
'sphinx.ext.autodoc',
|
||||
'sphinx.ext.intersphinx',
|
||||
'sphinx.ext.todo',
|
||||
'sphinxcontrib.restbuilder',
|
||||
|
||||
]
|
||||
|
||||
# Add any paths that contain templates here, relative to this directory.
|
||||
templates_path = ['_templates']
|
||||
|
||||
# List of patterns, relative to source directory, that match files and
|
||||
# directories to ignore when looking for source files.
|
||||
# This pattern also affects html_static_path and html_extra_path.
|
||||
exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
|
||||
612
docs/index.rst
612
docs/index.rst
|
|
@ -1,612 +0,0 @@
|
|||
.. tractor documentation master file, created by
|
||||
sphinx-quickstart on Sun Feb 9 22:26:51 2020.
|
||||
You can adapt this file completely to your liking, but it should at least
|
||||
contain the root `toctree` directive.
|
||||
|
||||
``tractor``
|
||||
===========
|
||||
|
||||
A `structured concurrent`_, async-native "`actor model`_" built on trio_ and multiprocessing_.
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 1
|
||||
:caption: Contents:
|
||||
|
||||
.. _actor model: https://en.wikipedia.org/wiki/Actor_model
|
||||
.. _trio: https://github.com/python-trio/trio
|
||||
.. _multiprocessing: https://en.wikipedia.org/wiki/Multiprocessing
|
||||
.. _trionic: https://trio.readthedocs.io/en/latest/design.html#high-level-design-principles
|
||||
.. _async sandwich: https://trio.readthedocs.io/en/latest/tutorial.html#async-sandwich
|
||||
.. _structured concurrent: https://trio.discourse.group/t/concise-definition-of-structured-concurrency/228
|
||||
|
||||
|
||||
``tractor`` is an attempt to bring trionic_ `structured concurrency`_ to
|
||||
distributed multi-core Python; it aims to be the Python multi-processing
|
||||
framework *you always wanted*.
|
||||
|
||||
``tractor`` lets you spawn ``trio`` *"actors"*: processes which each run
|
||||
a ``trio`` scheduled task tree (also known as an `async sandwich`_).
|
||||
*Actors* communicate by exchanging asynchronous messages_ and avoid
|
||||
sharing any state. This model allows for highly distributed software
|
||||
architecture which works just as well on multiple cores as it does over
|
||||
many hosts.
|
||||
|
||||
The first step to grok ``tractor`` is to get the basics of ``trio`` down.
|
||||
A great place to start is the `trio docs`_ and this `blog post`_.
|
||||
|
||||
.. _messages: https://en.wikipedia.org/wiki/Message_passing
|
||||
.. _trio docs: https://trio.readthedocs.io/en/latest/
|
||||
.. _blog post: https://vorpus.org/blog/notes-on-structured-concurrency-or-go-statement-considered-harmful/
|
||||
.. _structured concurrency: https://vorpus.org/blog/notes-on-structured-concurrency-or-go-statement-considered-harmful/
|
||||
|
||||
|
||||
Install
|
||||
-------
|
||||
No PyPi release yet!
|
||||
|
||||
::
|
||||
|
||||
pip install git+git://github.com/goodboy/tractor.git
|
||||
|
||||
|
||||
Feel like saying hi?
|
||||
--------------------
|
||||
This project is very much coupled to the ongoing development of
|
||||
``trio`` (i.e. ``tractor`` gets all its ideas from that brilliant
|
||||
community). If you want to help, have suggestions or just want to
|
||||
say hi, please feel free to ping me on the `trio gitter channel`_!
|
||||
|
||||
.. _trio gitter channel: https://gitter.im/python-trio/general
|
||||
|
||||
|
||||
|
||||
Philosophy
|
||||
----------
|
||||
Our tenets non-comprehensively include:
|
||||
|
||||
- strict adherence to the `concept-in-progress`_ of *structured concurrency*
|
||||
- no spawning of processes *willy-nilly*; causality_ is paramount!
|
||||
- (remote) errors `always propagate`_ back to the parent supervisor
|
||||
- verbatim support for ``trio``'s cancellation_ system
|
||||
- `shared nothing architecture`_
|
||||
- no use of *proxy* objects or shared references between processes
|
||||
- an immersive debugging experience
|
||||
- anti-fragility through `chaos engineering`_
|
||||
|
||||
``tractor`` is an actor-model-*like* system in the sense that it adheres
|
||||
to the `3 axioms`_ but does not (yet) fulfil all "unrequirements_" in
|
||||
practise. It is an experiment in applying `structured concurrency`_
|
||||
constraints on a parallel processing system where multiple Python
|
||||
processes exist over many hosts but no process can outlive its parent.
|
||||
In `erlang` parlance, it is an architecture where every process has
|
||||
a mandatory supervisor enforced by the type system. The API design is
|
||||
almost exclusively inspired by trio_'s concepts and primitives (though
|
||||
we often lag a little). As a distributed computing system `tractor`
|
||||
attempts to place sophistication at the correct layer such that
|
||||
concurrency primitives are powerful yet simple, making it easy to build
|
||||
complex systems (you can build a "worker pool" architecture but it's
|
||||
definitely not required). There is first class support for inter-actor
|
||||
streaming using `async generators`_ and ongoing work toward a functional
|
||||
reactive style for IPC.
|
||||
|
||||
.. warning:: ``tractor`` is in alpha-alpha and is expected to change rapidly!
|
||||
Expect nothing to be set in stone. Your ideas about where it should go
|
||||
are greatly appreciated!
|
||||
|
||||
.. _concept-in-progress: https://trio.discourse.group/t/structured-concurrency-kickoff/55
|
||||
.. _3 axioms: https://en.wikipedia.org/wiki/Actor_model#Fundamental_concepts
|
||||
.. _unrequirements: https://en.wikipedia.org/wiki/Actor_model#Direct_communication_and_asynchrony
|
||||
.. _async generators: https://www.python.org/dev/peps/pep-0525/
|
||||
.. _always propagate: https://trio.readthedocs.io/en/latest/design.html#exceptions-always-propagate
|
||||
.. _causality: https://vorpus.org/blog/some-thoughts-on-asynchronous-api-design-in-a-post-asyncawait-world/#c-c-c-c-causality-breaker
|
||||
.. _shared nothing architecture: https://en.wikipedia.org/wiki/Shared-nothing_architecture
|
||||
.. _cancellation: https://trio.readthedocs.io/en/latest/reference-core.html#cancellation-and-timeouts
|
||||
.. _channels: https://en.wikipedia.org/wiki/Channel_(programming)
|
||||
.. _chaos engineering: http://principlesofchaos.org/
|
||||
|
||||
|
||||
Examples
|
||||
--------
|
||||
Note, if you are on Windows please be sure to see the :ref:`gotchas
|
||||
<windowsgotchas>` section before trying these.
|
||||
|
||||
|
||||
A trynamic first scene
|
||||
**********************
|
||||
Let's direct a couple *actors* and have them run their lines for
|
||||
the hip new film we're shooting:
|
||||
|
||||
.. literalinclude:: ../examples/a_trynamic_first_scene.py
|
||||
|
||||
We spawn two *actors*, *donny* and *gretchen*.
|
||||
Each actor starts up and executes their *main task* defined by an
|
||||
async function, ``say_hello()``. The function instructs each actor
|
||||
to find their partner and say hello by calling their partner's
|
||||
``hi()`` function using something called a *portal*. Each actor
|
||||
receives a response and relays that back to the parent actor (in
|
||||
this case our "director" executing ``main()``).
|
||||
|
||||
|
||||
Actor spawning and causality
|
||||
****************************
|
||||
``tractor`` tries to take ``trio``'s concept of causal task lifetimes
|
||||
to multi-process land. Accordingly, ``tractor``'s *actor nursery* behaves
|
||||
similar to ``trio``'s nursery_. That is, ``tractor.open_nursery()``
|
||||
opens an ``ActorNursery`` which **must** wait on spawned *actors* to complete
|
||||
(or error) in the same causal_ way ``trio`` waits on spawned subtasks.
|
||||
This includes errors from any one actor causing all other actors
|
||||
spawned by the same nursery to be cancelled_.
|
||||
|
||||
To spawn an actor and run a function in it, open a *nursery block*
|
||||
and use the ``run_in_actor()`` method:
|
||||
|
||||
.. literalinclude:: ../examples/actor_spawning_and_causality.py
|
||||
|
||||
What's going on?
|
||||
|
||||
- an initial *actor* is started with ``trio.run()`` and told to execute
|
||||
its main task_: ``main()``
|
||||
|
||||
- inside ``main()`` an actor is *spawned* using an ``ActorNusery`` and is told
|
||||
to run a single function: ``cellar_door()``
|
||||
|
||||
- a ``portal`` instance (we'll get to what it is shortly)
|
||||
returned from ``nursery.run_in_actor()`` is used to communicate with
|
||||
the newly spawned *sub-actor*
|
||||
|
||||
- the second actor, *some_linguist*, in a new *process* running a new ``trio`` task_
|
||||
then executes ``cellar_door()`` and returns its result over a *channel* back
|
||||
to the parent actor
|
||||
|
||||
- the parent actor retrieves the subactor's *final result* using ``portal.result()``
|
||||
much like you'd expect from a future_.
|
||||
|
||||
This ``run_in_actor()`` API should look very familiar to users of
|
||||
``asyncio``'s `run_in_executor()`_ which uses a ``concurrent.futures`` Executor_.
|
||||
|
||||
Since you might also want to spawn long running *worker* or *daemon*
|
||||
actors, each actor's *lifetime* can be determined based on the spawn
|
||||
method:
|
||||
|
||||
- if the actor is spawned using ``run_in_actor()`` it terminates when
|
||||
its *main* task completes (i.e. when the (async) function submitted
|
||||
to it *returns*). The ``with tractor.open_nursery()`` exits only once
|
||||
all actors' main function/task complete (just like the nursery_ in ``trio``)
|
||||
|
||||
- actors can be spawned to *live forever* using the ``start_actor()``
|
||||
method and act like an RPC daemon that runs indefinitely (the
|
||||
``with tractor.open_nursery()`` won't exit) until cancelled_
|
||||
|
||||
Here is a similar example using the latter method:
|
||||
|
||||
.. literalinclude:: ../examples/actor_spawning_and_causality_with_daemon.py
|
||||
|
||||
The ``enable_modules`` `kwarg` above is a list of module path
|
||||
strings that will be loaded and made accessible for execution in the
|
||||
remote actor through a call to ``Portal.run()``. For now this is
|
||||
a simple mechanism to restrict the functionality of the remote
|
||||
(and possibly daemonized) actor and uses Python's module system to
|
||||
limit the allowed remote function namespace(s).
|
||||
|
||||
``tractor`` is opinionated about the underlying threading model used for
|
||||
each *actor*. Since Python has a GIL and an actor model by definition
|
||||
shares no state between actors, it fits naturally to use a multiprocessing_
|
||||
``Process``. This allows ``tractor`` programs to leverage not only multi-core
|
||||
hardware but also distribute over many hardware hosts (each *actor* can talk
|
||||
to all others with ease over standard network protocols).
|
||||
|
||||
.. _task: https://trio.readthedocs.io/en/latest/reference-core.html#tasks-let-you-do-multiple-things-at-once
|
||||
.. _nursery: https://trio.readthedocs.io/en/latest/reference-core.html#nurseries-and-spawning
|
||||
.. _causal: https://vorpus.org/blog/some-thoughts-on-asynchronous-api-design-in-a-post-asyncawait-world/#causality
|
||||
.. _cancelled: https://trio.readthedocs.io/en/latest/reference-core.html#child-tasks-and-cancellation
|
||||
.. _run_in_executor(): https://docs.python.org/3/library/asyncio-eventloop.html#asyncio.loop.run_in_executor
|
||||
.. _Executor: https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.Executor
|
||||
|
||||
|
||||
Cancellation
|
||||
************
|
||||
``tractor`` supports ``trio``'s cancellation_ system verbatim.
|
||||
Cancelling a nursery block cancels all actors spawned by it.
|
||||
Eventually ``tractor`` plans to support different `supervision strategies`_ like ``erlang``.
|
||||
|
||||
.. _supervision strategies: http://erlang.org/doc/man/supervisor.html#sup_flags
|
||||
|
||||
|
||||
Remote error propagation
|
||||
************************
|
||||
Any task invoked in a remote actor should ship any error(s) back to the calling
|
||||
actor where it is raised and expected to be dealt with. This way remote actors
|
||||
are never cancelled unless explicitly asked or there's a bug in ``tractor`` itself.
|
||||
|
||||
.. literalinclude:: ../examples/remote_error_propagation.py
|
||||
|
||||
|
||||
You'll notice the nursery cancellation conducts a *one-cancels-all*
|
||||
supervisory strategy `exactly like trio`_. The plan is to add more
|
||||
`erlang strategies`_ in the near future by allowing nurseries to accept
|
||||
a ``Supervisor`` type.
|
||||
|
||||
.. _exactly like trio: https://trio.readthedocs.io/en/latest/reference-core.html#cancellation-semantics
|
||||
.. _erlang strategies: http://learnyousomeerlang.com/supervisors
|
||||
|
||||
|
||||
IPC using *portals*
|
||||
*******************
|
||||
``tractor`` introduces the concept of a *portal* which is an API
|
||||
borrowed_ from ``trio``. A portal may seem similar to the idea of
|
||||
a RPC future_ except a *portal* allows invoking remote *async* functions and
|
||||
generators and intermittently blocking to receive responses. This allows
|
||||
for fully async-native IPC between actors.
|
||||
|
||||
When you invoke another actor's routines using a *portal* it looks as though
|
||||
it was called locally in the current actor. So when you see a call to
|
||||
``await portal.run()`` what you get back is what you'd expect
|
||||
to if you'd called the function directly in-process. This approach avoids
|
||||
the need to add any special RPC *proxy* objects to the library by instead just
|
||||
relying on the built-in (async) function calling semantics and protocols of Python.
|
||||
|
||||
Depending on the function type ``Portal.run()`` tries to
|
||||
correctly interface exactly like a local version of the remote
|
||||
built-in Python *function type*. Currently async functions, generators,
|
||||
and regular functions are supported. Inspiration for this API comes
|
||||
`remote function execution`_ but without the client code being
|
||||
concerned about the underlying channels_ system or shipping code
|
||||
over the network.
|
||||
|
||||
This *portal* approach turns out to be paricularly exciting with the
|
||||
introduction of `asynchronous generators`_ in Python 3.6! It means that
|
||||
actors can compose nicely in a data streaming pipeline.
|
||||
|
||||
.. _exactly like trio: https://trio.readthedocs.io/en/latest/reference-core.html#cancellation-semantics
|
||||
|
||||
Streaming
|
||||
*********
|
||||
By now you've figured out that ``tractor`` lets you spawn process based
|
||||
*actors* that can invoke cross-process (async) functions and all with
|
||||
structured concurrency built in. But the **real cool stuff** is the
|
||||
native support for cross-process *streaming*.
|
||||
|
||||
|
||||
Asynchronous generators
|
||||
+++++++++++++++++++++++
|
||||
The default streaming function is simply an async generator definition.
|
||||
Every value *yielded* from the generator is delivered to the calling
|
||||
portal exactly like if you had invoked the function in-process meaning
|
||||
you can ``async for`` to receive each value on the calling side.
|
||||
|
||||
As an example here's a parent actor that streams for 1 second from a
|
||||
spawned subactor:
|
||||
|
||||
.. literalinclude:: ../examples/asynchronous_generators.py
|
||||
|
||||
By default async generator functions are treated as inter-actor
|
||||
*streams* when invoked via a portal (how else could you really interface
|
||||
with them anyway) so no special syntax to denote the streaming *service*
|
||||
is necessary.
|
||||
|
||||
|
||||
Channels and Contexts
|
||||
+++++++++++++++++++++
|
||||
If you aren't fond of having to write an async generator to stream data
|
||||
between actors (or need something more flexible) you can instead use
|
||||
a ``Context``. A context wraps an actor-local spawned task and
|
||||
a ``Channel`` so that tasks executing across multiple processes can
|
||||
stream data to one another using a low level, request oriented API.
|
||||
|
||||
A ``Channel`` wraps an underlying *transport* and *interchange* format
|
||||
to enable *inter-actor-communication*. In its present state ``tractor``
|
||||
uses TCP and msgpack_.
|
||||
|
||||
As an example if you wanted to create a streaming server without writing
|
||||
an async generator that *yields* values you instead define a decorated
|
||||
async function:
|
||||
|
||||
.. code:: python
|
||||
|
||||
@tractor.stream
|
||||
async def streamer(ctx: tractor.Context, rate: int = 2) -> None:
|
||||
"""A simple web response streaming server.
|
||||
"""
|
||||
while True:
|
||||
val = await web_request('http://data.feed.com')
|
||||
|
||||
# this is the same as ``yield`` in the async gen case
|
||||
await ctx.send_yield(val)
|
||||
|
||||
await trio.sleep(1 / rate)
|
||||
|
||||
|
||||
You must decorate the function with ``@tractor.stream`` and declare
|
||||
a ``ctx`` argument as the first in your function signature and then
|
||||
``tractor`` will treat the async function like an async generator - as
|
||||
a stream from the calling/client side.
|
||||
|
||||
This turns out to be handy particularly if you have multiple tasks
|
||||
pushing responses concurrently:
|
||||
|
||||
.. code:: python
|
||||
|
||||
async def streamer(
|
||||
ctx: tractor.Context,
|
||||
rate: int = 2
|
||||
) -> None:
|
||||
"""A simple web response streaming server.
|
||||
"""
|
||||
while True:
|
||||
val = await web_request(url)
|
||||
|
||||
# this is the same as ``yield`` in the async gen case
|
||||
await ctx.send_yield(val)
|
||||
|
||||
await trio.sleep(1 / rate)
|
||||
|
||||
|
||||
@tractor.stream
|
||||
async def stream_multiple_sources(
|
||||
ctx: tractor.Context,
|
||||
sources: List[str]
|
||||
) -> None:
|
||||
async with trio.open_nursery() as n:
|
||||
for url in sources:
|
||||
n.start_soon(streamer, ctx, url)
|
||||
|
||||
|
||||
The context notion comes from the context_ in nanomsg_.
|
||||
|
||||
.. _context: https://nanomsg.github.io/nng/man/tip/nng_ctx.5
|
||||
.. _msgpack: https://en.wikipedia.org/wiki/MessagePack
|
||||
|
||||
|
||||
|
||||
A full fledged streaming service
|
||||
++++++++++++++++++++++++++++++++
|
||||
Alright, let's get fancy.
|
||||
|
||||
Say you wanted to spawn two actors which each pull data feeds from
|
||||
two different sources (and wanted this work spread across 2 cpus).
|
||||
You also want to aggregate these feeds, do some processing on them and then
|
||||
deliver the final result stream to a client (or in this case parent) actor
|
||||
and print the results to your screen:
|
||||
|
||||
.. literalinclude:: ../examples/full_fledged_streaming_service.py
|
||||
|
||||
Here there's four actors running in separate processes (using all the
|
||||
cores on you machine). Two are streaming by *yielding* values from the
|
||||
``stream_data()`` async generator, one is aggregating values from
|
||||
those two in ``aggregate()`` (also an async generator) and shipping the
|
||||
single stream of unique values up the parent actor (the ``'MainProcess'``
|
||||
as ``multiprocessing`` calls it) which is running ``main()``.
|
||||
|
||||
.. _future: https://en.wikipedia.org/wiki/Futures_and_promises
|
||||
.. _borrowed:
|
||||
https://trio.readthedocs.io/en/latest/reference-core.html#getting-back-into-the-trio-thread-from-another-thread
|
||||
.. _asynchronous generators: https://www.python.org/dev/peps/pep-0525/
|
||||
.. _remote function execution: https://codespeak.net/execnet/example/test_info.html#remote-exec-a-function-avoiding-inlined-source-part-i
|
||||
|
||||
|
||||
Actor local (aka *process global*) variables
|
||||
********************************************
|
||||
Although ``tractor`` uses a *shared-nothing* architecture between
|
||||
processes you can of course share state between tasks running *within*
|
||||
an actor (since a `trio.run()` runtime is single threaded). ``trio``
|
||||
tasks spawned via multiple RPC calls to an actor can modify
|
||||
*process-global-state* defined using Python module attributes:
|
||||
|
||||
.. code:: python
|
||||
|
||||
|
||||
# a per process cache
|
||||
_actor_cache: dict[str, bool] = {}
|
||||
|
||||
|
||||
def ping_endpoints(endpoints: List[str]):
|
||||
"""Start a polling process which runs completely separate
|
||||
from our root actor/process.
|
||||
|
||||
"""
|
||||
|
||||
# This runs in a new process so no changes # will propagate
|
||||
# back to the parent actor
|
||||
while True:
|
||||
|
||||
for ep in endpoints:
|
||||
status = await check_endpoint_is_up(ep)
|
||||
_actor_cache[ep] = status
|
||||
|
||||
await trio.sleep(0.5)
|
||||
|
||||
|
||||
async def get_alive_endpoints():
|
||||
|
||||
nonlocal _actor_cache
|
||||
|
||||
return {key for key, value in _actor_cache.items() if value}
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.run_in_actor(ping_endpoints)
|
||||
|
||||
# print the alive endpoints after 3 seconds
|
||||
await trio.sleep(3)
|
||||
|
||||
# this is submitted to be run in our "ping_endpoints" actor
|
||||
print(await portal.run(get_alive_endpoints))
|
||||
|
||||
|
||||
You can pass any kind of (`msgpack`) serializable data between actors using
|
||||
function call semantics but building out a state sharing system per-actor
|
||||
is totally up to you.
|
||||
|
||||
|
||||
Service Discovery
|
||||
*****************
|
||||
Though it will be built out much more in the near future, ``tractor``
|
||||
currently keeps track of actors by ``(name: str, id: str)`` using a
|
||||
special actor called the *arbiter*. Currently the *arbiter* must exist
|
||||
on a host (or it will be created if one can't be found) and keeps a
|
||||
simple ``dict`` of actor names to sockets for discovery by other actors.
|
||||
Obviously this can be made more sophisticated (help me with it!) but for
|
||||
now it does the trick.
|
||||
|
||||
To find the arbiter from the current actor use the ``get_arbiter()`` function and to
|
||||
find an actor's socket address by name use the ``find_actor()`` function:
|
||||
|
||||
.. literalinclude:: ../examples/service_discovery.py
|
||||
|
||||
The ``name`` value you should pass to ``find_actor()`` is the one you passed as the
|
||||
*first* argument to either ``trio.run()`` or ``ActorNursery.start_actor()``.
|
||||
|
||||
|
||||
Running actors standalone
|
||||
*************************
|
||||
You don't have to spawn any actors using ``open_nursery()`` if you just
|
||||
want to run a single actor that connects to an existing cluster.
|
||||
All the comms and arbiter registration stuff still works. This can
|
||||
somtimes turn out being handy when debugging mult-process apps when you
|
||||
need to hop into a debugger. You just need to pass the existing
|
||||
*arbiter*'s socket address you'd like to connect to:
|
||||
|
||||
.. code:: python
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_root_actor(
|
||||
arbiter_addr=('192.168.0.10', 1616)
|
||||
):
|
||||
await trio.sleep_forever()
|
||||
|
||||
trio.run(main)
|
||||
|
||||
|
||||
Choosing a process spawning backend
|
||||
***********************************
|
||||
``tractor`` is architected to support multiple actor (sub-process)
|
||||
spawning backends. Specific defaults are chosen based on your system
|
||||
but you can also explicitly select a backend of choice at startup
|
||||
via a ``start_method`` kwarg to ``tractor.open_nursery()``.
|
||||
|
||||
Currently the options available are:
|
||||
|
||||
- ``trio``: a ``trio``-native spawner which is an async wrapper around ``subprocess``
|
||||
- ``spawn``: one of the stdlib's ``multiprocessing`` `start methods`_
|
||||
- ``forkserver``: a faster ``multiprocessing`` variant that is Unix only
|
||||
|
||||
.. _start methods: https://docs.python.org/3.8/library/multiprocessing.html#contexts-and-start-methods
|
||||
|
||||
|
||||
``trio``
|
||||
++++++++
|
||||
The ``trio`` backend offers a lightweight async wrapper around ``subprocess`` from the standard library and takes advantage of the ``trio.`` `open_process`_ API.
|
||||
|
||||
.. _open_process: https://trio.readthedocs.io/en/stable/reference-io.html#spawning-subprocesses
|
||||
|
||||
|
||||
``multiprocessing``
|
||||
+++++++++++++++++++
|
||||
There is support for the stdlib's ``multiprocessing`` `start methods`_.
|
||||
Note that on Windows *spawn* it the only supported method and on \*nix
|
||||
systems *forkserver* is the best method for speed but has the caveat
|
||||
that it will break easily (hangs due to broken pipes) if spawning actors
|
||||
using nested nurseries.
|
||||
|
||||
In general, the ``multiprocessing`` backend **has not proven reliable**
|
||||
for handling errors from actors more then 2 nurseries *deep* (see `#89`_).
|
||||
If you for some reason need this consider sticking with alternative
|
||||
backends.
|
||||
|
||||
.. _#89: https://github.com/goodboy/tractor/issues/89
|
||||
|
||||
.. _windowsgotchas:
|
||||
|
||||
Windows "gotchas"
|
||||
^^^^^^^^^^^^^^^^^
|
||||
On Windows (which requires the use of the stdlib's `multiprocessing`
|
||||
package) there are some gotchas. Namely, the need for calling
|
||||
`freeze_support()`_ inside the ``__main__`` context. Additionally you
|
||||
may need place you `tractor` program entry point in a seperate
|
||||
`__main__.py` module in your package in order to avoid an error like the
|
||||
following ::
|
||||
|
||||
Traceback (most recent call last):
|
||||
File "C:\ProgramData\Miniconda3\envs\tractor19030601\lib\site-packages\tractor\_actor.py", line 234, in _get_rpc_func
|
||||
return getattr(self._mods[ns], funcname)
|
||||
KeyError: '__mp_main__'
|
||||
|
||||
|
||||
To avoid this, the following is the **only code** that should be in your
|
||||
main python module of the program:
|
||||
|
||||
.. code:: python
|
||||
|
||||
# application/__main__.py
|
||||
import trio
|
||||
import tractor
|
||||
import multiprocessing
|
||||
from . import tractor_app
|
||||
|
||||
if __name__ == '__main__':
|
||||
multiprocessing.freeze_support()
|
||||
trio.run(tractor_app.main)
|
||||
|
||||
And execute as::
|
||||
|
||||
python -m application
|
||||
|
||||
|
||||
As an example we use the following code to test all documented examples
|
||||
in the test suite on windows:
|
||||
|
||||
.. literalinclude:: ../examples/__main__.py
|
||||
|
||||
See `#61`_ and `#79`_ for further details.
|
||||
|
||||
.. _freeze_support(): https://docs.python.org/3/library/multiprocessing.html#multiprocessing.freeze_support
|
||||
.. _#61: https://github.com/goodboy/tractor/pull/61#issuecomment-470053512
|
||||
.. _#79: https://github.com/goodboy/tractor/pull/79
|
||||
|
||||
|
||||
Enabling logging
|
||||
****************
|
||||
Considering how complicated distributed software can become it helps to know
|
||||
what exactly it's doing (even at the lowest levels). Luckily ``tractor`` has
|
||||
tons of logging throughout the core. ``tractor`` isn't opinionated on
|
||||
how you use this information and users are expected to consume log messages in
|
||||
whichever way is appropriate for the system at hand. That being said, when hacking
|
||||
on ``tractor`` there is a prettified console formatter which you can enable to
|
||||
see what the heck is going on. Just put the following somewhere in your code:
|
||||
|
||||
.. code:: python
|
||||
|
||||
from tractor.log import get_console_log
|
||||
log = get_console_log('trace')
|
||||
|
||||
|
||||
What the future holds
|
||||
---------------------
|
||||
Stuff I'd like to see ``tractor`` do real soon:
|
||||
|
||||
- TLS_, duh.
|
||||
- erlang-like supervisors_
|
||||
- native support for `nanomsg`_ as a channel transport
|
||||
- native `gossip protocol`_ support for service discovery and arbiter election
|
||||
- a distributed log ledger for tracking cluster behaviour
|
||||
- a slick multi-process aware debugger much like in celery_
|
||||
but with better `pdb++`_ support
|
||||
- an extensive `chaos engineering`_ test suite
|
||||
- support for reactive programming primitives and native support for asyncitertools_ like libs
|
||||
- introduction of a `capability-based security`_ model
|
||||
|
||||
.. _TLS: https://trio.readthedocs.io/en/latest/reference-io.html#ssl-tls-support
|
||||
.. _supervisors: https://github.com/goodboy/tractor/issues/22
|
||||
.. _nanomsg: https://nanomsg.github.io/nng/index.html
|
||||
.. _gossip protocol: https://en.wikipedia.org/wiki/Gossip_protocol
|
||||
.. _celery: http://docs.celeryproject.org/en/latest/userguide/debugging.html
|
||||
.. _asyncitertools: https://github.com/vodik/asyncitertools
|
||||
.. _pdb++: https://github.com/antocuni/pdb
|
||||
.. _capability-based security: https://en.wikipedia.org/wiki/Capability-based_security
|
||||
|
|
@ -1,4 +0,0 @@
|
|||
#!/bin/bash
|
||||
sphinx-build -b rst ./github_readme ./
|
||||
|
||||
mv _sphinx_readme.rst _README.rst
|
||||
|
|
@ -1,19 +0,0 @@
|
|||
"""
|
||||
Needed on Windows.
|
||||
|
||||
This module is needed as the program entry point for invocation
|
||||
with ``python -m <modulename>``. See the solution from @chrizzFTD
|
||||
here:
|
||||
|
||||
https://github.com/goodboy/tractor/pull/61#issuecomment-470053512
|
||||
|
||||
"""
|
||||
if __name__ == '__main__':
|
||||
import multiprocessing
|
||||
multiprocessing.freeze_support()
|
||||
# ``tests/test_docs_examples.py::test_example`` will copy each
|
||||
# script from this examples directory into a module in a new
|
||||
# temporary dir and name it test_example.py. We import that script
|
||||
# module here and invoke it's ``main()``.
|
||||
from . import test_example
|
||||
test_example.trio.run(test_example.main)
|
||||
|
|
@ -1,44 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
_this_module = __name__
|
||||
the_line = 'Hi my name is {}'
|
||||
|
||||
|
||||
tractor.log.get_console_log("INFO")
|
||||
|
||||
|
||||
async def hi():
|
||||
return the_line.format(tractor.current_actor().name)
|
||||
|
||||
|
||||
async def say_hello(other_actor):
|
||||
async with tractor.wait_for_actor(other_actor) as portal:
|
||||
return await portal.run(hi)
|
||||
|
||||
|
||||
async def main():
|
||||
"""Main tractor entry point, the "master" process (for now
|
||||
acts as the "director").
|
||||
"""
|
||||
async with tractor.open_nursery() as n:
|
||||
print("Alright... Action!")
|
||||
|
||||
donny = await n.run_in_actor(
|
||||
say_hello,
|
||||
name='donny',
|
||||
# arguments are always named
|
||||
other_actor='gretchen',
|
||||
)
|
||||
gretchen = await n.run_in_actor(
|
||||
say_hello,
|
||||
name='gretchen',
|
||||
other_actor='donny',
|
||||
)
|
||||
print(await gretchen.result())
|
||||
print(await donny.result())
|
||||
print("CUTTTT CUUTT CUT!!! Donny!! You're supposed to say...")
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,27 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def cellar_door():
|
||||
assert not tractor.is_root_process()
|
||||
return "Dang that's beautiful"
|
||||
|
||||
|
||||
async def main():
|
||||
"""The main ``tractor`` routine.
|
||||
"""
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.run_in_actor(
|
||||
cellar_door,
|
||||
name='some_linguist',
|
||||
)
|
||||
|
||||
# The ``async with`` will unblock here since the 'some_linguist'
|
||||
# actor has completed its main task ``cellar_door``.
|
||||
|
||||
print(await portal.result())
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,34 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def movie_theatre_question():
|
||||
"""A question asked in a dark theatre, in a tangent
|
||||
(errr, I mean different) process.
|
||||
"""
|
||||
return 'have you ever seen a portal?'
|
||||
|
||||
|
||||
async def main():
|
||||
"""The main ``tractor`` routine.
|
||||
"""
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.start_actor(
|
||||
'frank',
|
||||
# enable the actor to run funcs from this current module
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
print(await portal.run(movie_theatre_question))
|
||||
# call the subactor a 2nd time
|
||||
print(await portal.run(movie_theatre_question))
|
||||
|
||||
# the async with will block here indefinitely waiting
|
||||
# for our actor "frank" to complete, but since it's an
|
||||
# "outlive_main" actor it will never end until cancelled
|
||||
await portal.cancel_actor()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,259 +0,0 @@
|
|||
'''
|
||||
Complex edge case where during real-time streaming the IPC tranport
|
||||
channels are wiped out (purposely in this example though it could have
|
||||
been an outage) and we want to ensure that despite being in debug mode
|
||||
(or not) the user can sent SIGINT once they notice the hang and the
|
||||
actor tree will eventually be cancelled without leaving any zombies.
|
||||
|
||||
'''
|
||||
from contextlib import asynccontextmanager as acm
|
||||
from functools import partial
|
||||
|
||||
from tractor import (
|
||||
open_nursery,
|
||||
context,
|
||||
Context,
|
||||
ContextCancelled,
|
||||
MsgStream,
|
||||
_testing,
|
||||
)
|
||||
import trio
|
||||
import pytest
|
||||
|
||||
|
||||
async def break_ipc_then_error(
|
||||
stream: MsgStream,
|
||||
break_ipc_with: str|None = None,
|
||||
pre_close: bool = False,
|
||||
):
|
||||
await _testing.break_ipc(
|
||||
stream=stream,
|
||||
method=break_ipc_with,
|
||||
pre_close=pre_close,
|
||||
)
|
||||
async for msg in stream:
|
||||
await stream.send(msg)
|
||||
|
||||
assert 0
|
||||
|
||||
|
||||
async def iter_ipc_stream(
|
||||
stream: MsgStream,
|
||||
break_ipc_with: str|None = None,
|
||||
pre_close: bool = False,
|
||||
):
|
||||
async for msg in stream:
|
||||
await stream.send(msg)
|
||||
|
||||
|
||||
@context
|
||||
async def recv_and_spawn_net_killers(
|
||||
|
||||
ctx: Context,
|
||||
break_ipc_after: bool|int = False,
|
||||
pre_close: bool = False,
|
||||
|
||||
) -> None:
|
||||
'''
|
||||
Receive stream msgs and spawn some IPC killers mid-stream.
|
||||
|
||||
'''
|
||||
broke_ipc: bool = False
|
||||
await ctx.started()
|
||||
async with (
|
||||
ctx.open_stream() as stream,
|
||||
trio.open_nursery(
|
||||
strict_exception_groups=False,
|
||||
) as tn,
|
||||
):
|
||||
async for i in stream:
|
||||
print(f'child echoing {i}')
|
||||
if not broke_ipc:
|
||||
await stream.send(i)
|
||||
else:
|
||||
await trio.sleep(0.01)
|
||||
|
||||
if (
|
||||
break_ipc_after
|
||||
and
|
||||
i >= break_ipc_after
|
||||
):
|
||||
broke_ipc = True
|
||||
tn.start_soon(
|
||||
iter_ipc_stream,
|
||||
stream,
|
||||
)
|
||||
tn.start_soon(
|
||||
partial(
|
||||
break_ipc_then_error,
|
||||
stream=stream,
|
||||
pre_close=pre_close,
|
||||
)
|
||||
)
|
||||
|
||||
|
||||
@acm
|
||||
async def stuff_hangin_ctlc(timeout: float = 1) -> None:
|
||||
|
||||
with trio.move_on_after(timeout) as cs:
|
||||
yield timeout
|
||||
|
||||
if cs.cancelled_caught:
|
||||
# pretend to be a user seeing no streaming action
|
||||
# thinking it's a hang, and then hitting ctl-c..
|
||||
print(
|
||||
f"i'm a user on the PARENT side and thingz hangin "
|
||||
f'after timeout={timeout} ???\n\n'
|
||||
'MASHING CTlR-C..!?\n'
|
||||
)
|
||||
raise KeyboardInterrupt
|
||||
|
||||
|
||||
async def main(
|
||||
debug_mode: bool = False,
|
||||
start_method: str = 'trio',
|
||||
loglevel: str = 'cancel',
|
||||
|
||||
# by default we break the parent IPC first (if configured to break
|
||||
# at all), but this can be changed so the child does first (even if
|
||||
# both are set to break).
|
||||
break_parent_ipc_after: int|bool = False,
|
||||
break_child_ipc_after: int|bool = False,
|
||||
pre_close: bool = False,
|
||||
|
||||
) -> None:
|
||||
|
||||
async with (
|
||||
open_nursery(
|
||||
start_method=start_method,
|
||||
|
||||
# NOTE: even debugger is used we shouldn't get
|
||||
# a hang since it never engages due to broken IPC
|
||||
debug_mode=debug_mode,
|
||||
loglevel=loglevel,
|
||||
|
||||
) as an,
|
||||
):
|
||||
sub_name: str = 'chitty_hijo'
|
||||
portal = await an.start_actor(
|
||||
sub_name,
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
async with (
|
||||
stuff_hangin_ctlc(timeout=2) as timeout,
|
||||
_testing.expect_ctxc(
|
||||
yay=(
|
||||
break_parent_ipc_after
|
||||
or break_child_ipc_after
|
||||
),
|
||||
# TODO: we CAN'T remove this right?
|
||||
# since we need the ctxc to bubble up from either
|
||||
# the stream API after the `None` msg is sent
|
||||
# (which actually implicitly cancels all remote
|
||||
# tasks in the hijo) or from simluated
|
||||
# KBI-mash-from-user
|
||||
# or should we expect that a KBI triggers the ctxc
|
||||
# and KBI in an eg?
|
||||
reraise=True,
|
||||
),
|
||||
|
||||
portal.open_context(
|
||||
recv_and_spawn_net_killers,
|
||||
break_ipc_after=break_child_ipc_after,
|
||||
pre_close=pre_close,
|
||||
) as (ctx, sent),
|
||||
):
|
||||
rx_eoc: bool = False
|
||||
ipc_break_sent: bool = False
|
||||
async with ctx.open_stream() as stream:
|
||||
for i in range(1000):
|
||||
|
||||
if (
|
||||
break_parent_ipc_after
|
||||
and
|
||||
i > break_parent_ipc_after
|
||||
and
|
||||
not ipc_break_sent
|
||||
):
|
||||
print(
|
||||
'#################################\n'
|
||||
'Simulating PARENT-side IPC BREAK!\n'
|
||||
'#################################\n'
|
||||
)
|
||||
|
||||
# TODO: other methods? see break func above.
|
||||
# await stream._ctx.chan.send(None)
|
||||
# await stream._ctx.chan.transport.stream.send_eof()
|
||||
await stream._ctx.chan.transport.stream.aclose()
|
||||
ipc_break_sent = True
|
||||
|
||||
# it actually breaks right here in the
|
||||
# mp_spawn/forkserver backends and thus the
|
||||
# zombie reaper never even kicks in?
|
||||
try:
|
||||
print(f'parent sending {i}')
|
||||
await stream.send(i)
|
||||
except ContextCancelled as ctxc:
|
||||
print(
|
||||
'parent received ctxc on `stream.send()`\n'
|
||||
f'{ctxc}\n'
|
||||
)
|
||||
assert 'root' in ctxc.canceller
|
||||
assert sub_name in ctx.canceller
|
||||
|
||||
# TODO: is this needed or no?
|
||||
raise
|
||||
|
||||
except trio.ClosedResourceError:
|
||||
# NOTE: don't send if we already broke the
|
||||
# connection to avoid raising a closed-error
|
||||
# such that we drop through to the ctl-c
|
||||
# mashing by user.
|
||||
await trio.sleep(0.01)
|
||||
|
||||
# timeout: int = 1
|
||||
# with trio.move_on_after(timeout) as cs:
|
||||
async with stuff_hangin_ctlc() as timeout:
|
||||
print(
|
||||
f'PARENT `stream.receive()` with timeout={timeout}\n'
|
||||
)
|
||||
# NOTE: in the parent side IPC failure case this
|
||||
# will raise an ``EndOfChannel`` after the child
|
||||
# is killed and sends a stop msg back to it's
|
||||
# caller/this-parent.
|
||||
try:
|
||||
rx = await stream.receive()
|
||||
print(
|
||||
"I'm a happy PARENT user and echoed to me is\n"
|
||||
f'{rx}\n'
|
||||
)
|
||||
except trio.EndOfChannel:
|
||||
rx_eoc: bool = True
|
||||
print('MsgStream got EoC for PARENT')
|
||||
raise
|
||||
|
||||
print(
|
||||
'Streaming finished and we got Eoc.\n'
|
||||
'Canceling `.open_context()` in root with\n'
|
||||
'CTlR-C..'
|
||||
)
|
||||
if rx_eoc:
|
||||
assert stream.closed
|
||||
try:
|
||||
await stream.send(i)
|
||||
pytest.fail('stream not closed?')
|
||||
except (
|
||||
trio.ClosedResourceError,
|
||||
trio.EndOfChannel,
|
||||
) as send_err:
|
||||
if rx_eoc:
|
||||
assert send_err is stream._eoc
|
||||
else:
|
||||
assert send_err is stream._closed
|
||||
|
||||
raise KeyboardInterrupt
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,42 +0,0 @@
|
|||
from typing import AsyncIterator
|
||||
from itertools import repeat
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def stream_forever() -> AsyncIterator[int]:
|
||||
|
||||
for i in repeat("I can see these little future bubble things"):
|
||||
# each yielded value is sent over the ``Channel`` to the parent actor
|
||||
yield i
|
||||
await trio.sleep(0.01)
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.start_actor(
|
||||
'donny',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
# this async for loop streams values from the above
|
||||
# async generator running in a separate process
|
||||
async with portal.open_stream_from(stream_forever) as stream:
|
||||
count = 0
|
||||
async for letter in stream:
|
||||
print(letter)
|
||||
count += 1
|
||||
|
||||
if count > 50:
|
||||
break
|
||||
|
||||
print('stream terminated')
|
||||
|
||||
await portal.cancel_actor()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,136 +0,0 @@
|
|||
'''
|
||||
Examples of using the builtin `breakpoint()` from an `asyncio.Task`
|
||||
running in a subactor spawned with `infect_asyncio=True`.
|
||||
|
||||
'''
|
||||
import asyncio
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
from tractor import (
|
||||
to_asyncio,
|
||||
Portal,
|
||||
)
|
||||
|
||||
|
||||
async def aio_sleep_forever():
|
||||
await asyncio.sleep(float('inf'))
|
||||
|
||||
|
||||
async def bp_then_error(
|
||||
to_trio: trio.MemorySendChannel,
|
||||
from_trio: asyncio.Queue,
|
||||
|
||||
raise_after_bp: bool = True,
|
||||
|
||||
) -> None:
|
||||
|
||||
# sync with `trio`-side (caller) task
|
||||
to_trio.send_nowait('start')
|
||||
|
||||
# NOTE: what happens here inside the hook needs some refinement..
|
||||
# => seems like it's still `._debug._set_trace()` but
|
||||
# we set `Lock.local_task_in_debug = 'sync'`, we probably want
|
||||
# some further, at least, meta-data about the task/actor in debug
|
||||
# in terms of making it clear it's `asyncio` mucking about.
|
||||
breakpoint() # asyncio-side
|
||||
|
||||
# short checkpoint / delay
|
||||
await asyncio.sleep(0.5) # asyncio-side
|
||||
|
||||
if raise_after_bp:
|
||||
raise ValueError('asyncio side error!')
|
||||
|
||||
# TODO: test case with this so that it gets cancelled?
|
||||
else:
|
||||
# XXX NOTE: this is required in order to get the SIGINT-ignored
|
||||
# hang case documented in the module script section!
|
||||
await aio_sleep_forever()
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def trio_ctx(
|
||||
ctx: tractor.Context,
|
||||
bp_before_started: bool = False,
|
||||
):
|
||||
|
||||
# this will block until the ``asyncio`` task sends a "first"
|
||||
# message, see first line in above func.
|
||||
async with (
|
||||
to_asyncio.open_channel_from(
|
||||
bp_then_error,
|
||||
# raise_after_bp=not bp_before_started,
|
||||
) as (first, chan),
|
||||
|
||||
trio.open_nursery() as tn,
|
||||
):
|
||||
assert first == 'start'
|
||||
|
||||
if bp_before_started:
|
||||
await tractor.pause() # trio-side
|
||||
|
||||
await ctx.started(first) # trio-side
|
||||
|
||||
tn.start_soon(
|
||||
to_asyncio.run_task,
|
||||
aio_sleep_forever,
|
||||
)
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
async def main(
|
||||
bps_all_over: bool = True,
|
||||
|
||||
# TODO, WHICH OF THESE HAZ BUGZ?
|
||||
cancel_from_root: bool = False,
|
||||
err_from_root: bool = False,
|
||||
|
||||
) -> None:
|
||||
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
maybe_enable_greenback=True,
|
||||
# loglevel='devx',
|
||||
) as an:
|
||||
ptl: Portal = await an.start_actor(
|
||||
'aio_daemon',
|
||||
enable_modules=[__name__],
|
||||
infect_asyncio=True,
|
||||
debug_mode=True,
|
||||
# loglevel='cancel',
|
||||
)
|
||||
|
||||
async with ptl.open_context(
|
||||
trio_ctx,
|
||||
bp_before_started=bps_all_over,
|
||||
) as (ctx, first):
|
||||
|
||||
assert first == 'start'
|
||||
|
||||
# pause in parent to ensure no cross-actor
|
||||
# locking problems exist!
|
||||
await tractor.pause() # trio-root
|
||||
|
||||
if cancel_from_root:
|
||||
await ctx.cancel()
|
||||
|
||||
if err_from_root:
|
||||
assert 0
|
||||
else:
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
# TODO: case where we cancel from trio-side while asyncio task
|
||||
# has debugger lock?
|
||||
# await ptl.cancel_actor()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
|
||||
# works fine B)
|
||||
trio.run(main)
|
||||
|
||||
# will hang and ignores SIGINT !!
|
||||
# NOTE: you'll need to send a SIGQUIT (via ctl-\) to kill it
|
||||
# manually..
|
||||
# trio.run(main, True)
|
||||
|
|
@ -1,9 +0,0 @@
|
|||
'''
|
||||
Reproduce a bug where enabling debug mode for a sub-actor actually causes
|
||||
a hang on teardown...
|
||||
|
||||
'''
|
||||
import asyncio
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
|
|
@ -1,54 +0,0 @@
|
|||
'''
|
||||
Fast fail test with a `Context`.
|
||||
|
||||
Ensure the partially initialized sub-actor process
|
||||
doesn't cause a hang on error/cancel of the parent
|
||||
nursery.
|
||||
|
||||
'''
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def sleep(
|
||||
ctx: tractor.Context,
|
||||
):
|
||||
await trio.sleep(0.5)
|
||||
await ctx.started()
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
async def open_ctx(
|
||||
n: tractor._supervise.ActorNursery
|
||||
):
|
||||
|
||||
# spawn both actors
|
||||
portal = await n.start_actor(
|
||||
name='sleeper',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
async with portal.open_context(
|
||||
sleep,
|
||||
) as (ctx, first):
|
||||
assert first is None
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
loglevel='runtime',
|
||||
) as an:
|
||||
|
||||
async with trio.open_nursery() as n:
|
||||
n.start_soon(open_ctx, an)
|
||||
|
||||
await trio.sleep(0.2)
|
||||
await trio.sleep(0.1)
|
||||
assert 0
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,54 +0,0 @@
|
|||
import tractor
|
||||
import trio
|
||||
|
||||
|
||||
async def breakpoint_forever():
|
||||
"Indefinitely re-enter debugger in child actor."
|
||||
try:
|
||||
while True:
|
||||
yield 'yo'
|
||||
await tractor.pause()
|
||||
except BaseException:
|
||||
tractor.log.get_console_log().exception(
|
||||
'Cancelled while trying to enter pause point!'
|
||||
)
|
||||
raise
|
||||
|
||||
|
||||
async def name_error():
|
||||
"Raise a ``NameError``"
|
||||
getattr(doggypants) # noqa
|
||||
|
||||
|
||||
async def main():
|
||||
'''
|
||||
Test breakpoint in a streaming actor.
|
||||
|
||||
'''
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
loglevel='cancel',
|
||||
# loglevel='devx',
|
||||
) as n:
|
||||
|
||||
p0 = await n.start_actor('bp_forever', enable_modules=[__name__])
|
||||
p1 = await n.start_actor('name_error', enable_modules=[__name__])
|
||||
|
||||
# retreive results
|
||||
async with p0.open_stream_from(breakpoint_forever) as stream:
|
||||
|
||||
# triggers the first name error
|
||||
try:
|
||||
await p1.run(name_error)
|
||||
except tractor.RemoteActorError as rae:
|
||||
assert rae.boxed_type is NameError
|
||||
|
||||
async for i in stream:
|
||||
|
||||
# a second time try the failing subactor and this tie
|
||||
# let error propagate up to the parent/nursery.
|
||||
await p1.run(name_error)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,99 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def name_error():
|
||||
"Raise a ``NameError``"
|
||||
getattr(doggypants) # noqa
|
||||
|
||||
|
||||
async def breakpoint_forever():
|
||||
"Indefinitely re-enter debugger in child actor."
|
||||
while True:
|
||||
await tractor.pause()
|
||||
|
||||
# NOTE: if the test never sent 'q'/'quit' commands
|
||||
# on the pdb repl, without this checkpoint line the
|
||||
# repl would spin in this actor forever.
|
||||
# await trio.sleep(0)
|
||||
|
||||
|
||||
async def spawn_until(depth=0):
|
||||
""""A nested nursery that triggers another ``NameError``.
|
||||
"""
|
||||
async with tractor.open_nursery() as n:
|
||||
if depth < 1:
|
||||
|
||||
await n.run_in_actor(breakpoint_forever)
|
||||
|
||||
p = await n.run_in_actor(
|
||||
name_error,
|
||||
name='name_error'
|
||||
)
|
||||
await trio.sleep(0.5)
|
||||
# rx and propagate error from child
|
||||
await p.result()
|
||||
|
||||
else:
|
||||
# recusrive call to spawn another process branching layer of
|
||||
# the tree
|
||||
depth -= 1
|
||||
await n.run_in_actor(
|
||||
spawn_until,
|
||||
depth=depth,
|
||||
name=f'spawn_until_{depth}',
|
||||
)
|
||||
|
||||
|
||||
# TODO: notes on the new boxed-relayed errors through proxy actors
|
||||
async def main():
|
||||
"""The main ``tractor`` routine.
|
||||
|
||||
The process tree should look as approximately as follows when the debugger
|
||||
first engages:
|
||||
|
||||
python examples/debugging/multi_nested_subactors_bp_forever.py
|
||||
├─ python -m tractor._child --uid ('spawner1', '7eab8462 ...)
|
||||
│ └─ python -m tractor._child --uid ('spawn_until_3', 'afcba7a8 ...)
|
||||
│ └─ python -m tractor._child --uid ('spawn_until_2', 'd2433d13 ...)
|
||||
│ └─ python -m tractor._child --uid ('spawn_until_1', '1df589de ...)
|
||||
│ └─ python -m tractor._child --uid ('spawn_until_0', '3720602b ...)
|
||||
│
|
||||
└─ python -m tractor._child --uid ('spawner0', '1d42012b ...)
|
||||
└─ python -m tractor._child --uid ('spawn_until_2', '2877e155 ...)
|
||||
└─ python -m tractor._child --uid ('spawn_until_1', '0502d786 ...)
|
||||
└─ python -m tractor._child --uid ('spawn_until_0', 'de918e6d ...)
|
||||
|
||||
"""
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
# loglevel='cancel',
|
||||
) as n:
|
||||
|
||||
# spawn both actors
|
||||
portal = await n.run_in_actor(
|
||||
spawn_until,
|
||||
depth=3,
|
||||
name='spawner0',
|
||||
)
|
||||
portal1 = await n.run_in_actor(
|
||||
spawn_until,
|
||||
depth=4,
|
||||
name='spawner1',
|
||||
)
|
||||
|
||||
# TODO: test this case as well where the parent don't see
|
||||
# the sub-actor errors by default and instead expect a user
|
||||
# ctrl-c to kill the root.
|
||||
with trio.move_on_after(3):
|
||||
await trio.sleep_forever()
|
||||
|
||||
# gah still an issue here.
|
||||
await portal.result()
|
||||
|
||||
# should never get here
|
||||
await portal1.result()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,66 +0,0 @@
|
|||
'''
|
||||
Test that a nested nursery will avoid clobbering
|
||||
the debugger latched by a broken child.
|
||||
|
||||
'''
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def name_error():
|
||||
"Raise a ``NameError``"
|
||||
getattr(doggypants) # noqa
|
||||
|
||||
|
||||
async def spawn_error():
|
||||
""""A nested nursery that triggers another ``NameError``.
|
||||
"""
|
||||
async with tractor.open_nursery() as n:
|
||||
portal = await n.run_in_actor(
|
||||
name_error,
|
||||
name='name_error_1',
|
||||
)
|
||||
return await portal.result()
|
||||
|
||||
|
||||
async def main():
|
||||
"""The main ``tractor`` routine.
|
||||
|
||||
The process tree should look as approximately as follows:
|
||||
|
||||
python examples/debugging/multi_subactors.py
|
||||
├─ python -m tractor._child --uid ('name_error', 'a7caf490 ...)
|
||||
`-python -m tractor._child --uid ('spawn_error', '52ee14a5 ...)
|
||||
`-python -m tractor._child --uid ('name_error', '3391222c ...)
|
||||
|
||||
Order of failure:
|
||||
- nested name_error sub-sub-actor
|
||||
- root actor should then fail on assert
|
||||
- program termination
|
||||
"""
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
loglevel='devx',
|
||||
) as n:
|
||||
|
||||
# spawn both actors
|
||||
portal = await n.run_in_actor(
|
||||
name_error,
|
||||
name='name_error',
|
||||
)
|
||||
portal1 = await n.run_in_actor(
|
||||
spawn_error,
|
||||
name='spawn_error',
|
||||
)
|
||||
|
||||
# trigger a root actor error
|
||||
assert 0
|
||||
|
||||
# attempt to collect results (which raises error in parent)
|
||||
# still has some issues where the parent seems to get stuck
|
||||
await portal.result()
|
||||
await portal1.result()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,53 +0,0 @@
|
|||
import tractor
|
||||
import trio
|
||||
|
||||
|
||||
async def breakpoint_forever():
|
||||
"Indefinitely re-enter debugger in child actor."
|
||||
while True:
|
||||
await trio.sleep(0.1)
|
||||
await tractor.pause()
|
||||
|
||||
|
||||
async def name_error():
|
||||
"Raise a ``NameError``"
|
||||
getattr(doggypants) # noqa
|
||||
|
||||
|
||||
async def spawn_error():
|
||||
""""A nested nursery that triggers another ``NameError``.
|
||||
"""
|
||||
async with tractor.open_nursery() as n:
|
||||
portal = await n.run_in_actor(
|
||||
name_error,
|
||||
name='name_error_1',
|
||||
)
|
||||
return await portal.result()
|
||||
|
||||
|
||||
async def main():
|
||||
"""The main ``tractor`` routine.
|
||||
|
||||
The process tree should look as approximately as follows:
|
||||
|
||||
-python examples/debugging/multi_subactors.py
|
||||
|-python -m tractor._child --uid ('name_error', 'a7caf490 ...)
|
||||
|-python -m tractor._child --uid ('bp_forever', '1f787a7e ...)
|
||||
`-python -m tractor._child --uid ('spawn_error', '52ee14a5 ...)
|
||||
`-python -m tractor._child --uid ('name_error', '3391222c ...)
|
||||
"""
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
# loglevel='runtime',
|
||||
) as n:
|
||||
|
||||
# Spawn both actors, don't bother with collecting results
|
||||
# (would result in a different debugger outcome due to parent's
|
||||
# cancellation).
|
||||
await n.run_in_actor(breakpoint_forever)
|
||||
await n.run_in_actor(name_error)
|
||||
await n.run_in_actor(spawn_error)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,40 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def just_sleep(
|
||||
|
||||
ctx: tractor.Context,
|
||||
**kwargs,
|
||||
|
||||
) -> None:
|
||||
'''
|
||||
Start and sleep.
|
||||
|
||||
'''
|
||||
await ctx.started()
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
async def main() -> None:
|
||||
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
) as n:
|
||||
portal = await n.start_actor(
|
||||
'ctx_child',
|
||||
|
||||
# XXX: we don't enable the current module in order
|
||||
# to trigger `ModuleNotFound`.
|
||||
enable_modules=[],
|
||||
)
|
||||
|
||||
async with portal.open_context(
|
||||
just_sleep, # taken from pytest parameterization
|
||||
) as (ctx, sent):
|
||||
raise KeyboardInterrupt
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,28 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
async def die():
|
||||
raise RuntimeError
|
||||
|
||||
|
||||
async def main():
|
||||
async with tractor.open_nursery() as tn:
|
||||
|
||||
debug_actor = await tn.start_actor(
|
||||
'debugged_boi',
|
||||
enable_modules=[__name__],
|
||||
debug_mode=True,
|
||||
)
|
||||
crash_boi = await tn.start_actor(
|
||||
'crash_boi',
|
||||
enable_modules=[__name__],
|
||||
# debug_mode=True,
|
||||
)
|
||||
|
||||
async with trio.open_nursery() as n:
|
||||
n.start_soon(debug_actor.run, die)
|
||||
n.start_soon(crash_boi.run, die)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,56 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def name_error(
|
||||
ctx: tractor.Context,
|
||||
):
|
||||
'''
|
||||
Raise a `NameError`, catch it and enter `.post_mortem()`, then
|
||||
expect the `._rpc._invoke()` crash handler to also engage.
|
||||
|
||||
'''
|
||||
try:
|
||||
getattr(doggypants) # noqa (on purpose)
|
||||
except NameError:
|
||||
await tractor.post_mortem()
|
||||
raise
|
||||
|
||||
|
||||
async def main():
|
||||
'''
|
||||
Test 3 `PdbREPL` entries:
|
||||
- one in the child due to manual `.post_mortem()`,
|
||||
- another in the child due to runtime RPC crash handling.
|
||||
- final one here in parent from the RAE.
|
||||
|
||||
'''
|
||||
# XXX NOTE: ideally the REPL arrives at this frame in the parent
|
||||
# ONE UP FROM the inner ctx block below!
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
# loglevel='cancel',
|
||||
) as an:
|
||||
p: tractor.Portal = await an.start_actor(
|
||||
'child',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
# XXX should raise `RemoteActorError[NameError]`
|
||||
# AND be the active frame when REPL enters!
|
||||
try:
|
||||
async with p.open_context(name_error) as (ctx, first):
|
||||
assert first
|
||||
except tractor.RemoteActorError as rae:
|
||||
assert rae.boxed_type is NameError
|
||||
|
||||
# manually handle in root's parent task
|
||||
await tractor.post_mortem()
|
||||
raise
|
||||
else:
|
||||
raise RuntimeError('IPC ctx should have remote errored!?')
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,49 +0,0 @@
|
|||
import os
|
||||
import sys
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def main() -> None:
|
||||
|
||||
# intially unset, no entry.
|
||||
orig_pybp_var: int = os.environ.get('PYTHONBREAKPOINT')
|
||||
assert orig_pybp_var in {None, "0"}
|
||||
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
) as an:
|
||||
assert an
|
||||
assert (
|
||||
(pybp_var := os.environ['PYTHONBREAKPOINT'])
|
||||
==
|
||||
'tractor.devx._debug._sync_pause_from_builtin'
|
||||
)
|
||||
|
||||
# TODO: an assert that verifies the hook has indeed been, hooked
|
||||
# XD
|
||||
assert (
|
||||
(pybp_hook := sys.breakpointhook)
|
||||
is not tractor.devx._debug._set_trace
|
||||
)
|
||||
|
||||
print(
|
||||
f'$PYTHONOBREAKPOINT: {pybp_var!r}\n'
|
||||
f'`sys.breakpointhook`: {pybp_hook!r}\n'
|
||||
)
|
||||
breakpoint() # first bp, tractor hook set.
|
||||
|
||||
# XXX AFTER EXIT (of actor-runtime) verify the hook is unset..
|
||||
#
|
||||
# YES, this is weird but it's how stdlib docs say to do it..
|
||||
# https://docs.python.org/3/library/sys.html#sys.breakpointhook
|
||||
assert os.environ.get('PYTHONBREAKPOINT') is orig_pybp_var
|
||||
assert sys.breakpointhook
|
||||
|
||||
# now ensure a regular builtin pause still works
|
||||
breakpoint() # last bp, stdlib hook restored
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,19 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_root_actor(
|
||||
debug_mode=True,
|
||||
):
|
||||
|
||||
await trio.sleep(0.1)
|
||||
|
||||
await tractor.pause()
|
||||
|
||||
await trio.sleep(0.1)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,18 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def main(
|
||||
registry_addrs: tuple[str, int]|None = None
|
||||
):
|
||||
|
||||
async with tractor.open_root_actor(
|
||||
debug_mode=True,
|
||||
# loglevel='runtime',
|
||||
):
|
||||
while True:
|
||||
await tractor.pause()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,13 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def main():
|
||||
async with tractor.open_root_actor(
|
||||
debug_mode=True,
|
||||
):
|
||||
assert 0
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,65 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def name_error():
|
||||
"Raise a ``NameError``"
|
||||
getattr(doggypants) # noqa
|
||||
|
||||
|
||||
async def spawn_until(depth=0):
|
||||
""""A nested nursery that triggers another ``NameError``.
|
||||
"""
|
||||
async with tractor.open_nursery() as n:
|
||||
if depth < 1:
|
||||
# await n.run_in_actor('breakpoint_forever', breakpoint_forever)
|
||||
await n.run_in_actor(name_error)
|
||||
else:
|
||||
depth -= 1
|
||||
await n.run_in_actor(
|
||||
spawn_until,
|
||||
depth=depth,
|
||||
name=f'spawn_until_{depth}',
|
||||
)
|
||||
|
||||
|
||||
async def main():
|
||||
"""The main ``tractor`` routine.
|
||||
|
||||
The process tree should look as approximately as follows when the debugger
|
||||
first engages:
|
||||
|
||||
python examples/debugging/multi_nested_subactors_bp_forever.py
|
||||
├─ python -m tractor._child --uid ('spawner1', '7eab8462 ...)
|
||||
│ └─ python -m tractor._child --uid ('spawn_until_0', '3720602b ...)
|
||||
│ └─ python -m tractor._child --uid ('name_error', '505bf71d ...)
|
||||
│
|
||||
└─ python -m tractor._child --uid ('spawner0', '1d42012b ...)
|
||||
└─ python -m tractor._child --uid ('name_error', '6c2733b8 ...)
|
||||
|
||||
"""
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
loglevel='warning'
|
||||
) as n:
|
||||
|
||||
# spawn both actors
|
||||
portal = await n.run_in_actor(
|
||||
spawn_until,
|
||||
depth=0,
|
||||
name='spawner0',
|
||||
)
|
||||
portal1 = await n.run_in_actor(
|
||||
spawn_until,
|
||||
depth=1,
|
||||
name='spawner1',
|
||||
)
|
||||
|
||||
# nursery cancellation should be triggered due to propagated
|
||||
# error from child.
|
||||
await portal.result()
|
||||
await portal1.result()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,31 +0,0 @@
|
|||
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def key_error():
|
||||
"Raise a ``NameError``"
|
||||
return {}['doggy']
|
||||
|
||||
|
||||
async def main():
|
||||
"""Root dies
|
||||
|
||||
"""
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
loglevel='debug'
|
||||
) as n:
|
||||
|
||||
# spawn both actors
|
||||
portal = await n.run_in_actor(key_error)
|
||||
|
||||
# XXX: originally a bug caused by this is where root would enter
|
||||
# the debugger and clobber the tty used by the repl even though
|
||||
# child should have it locked.
|
||||
with trio.fail_after(1):
|
||||
await trio.Event().wait()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,83 +0,0 @@
|
|||
'''
|
||||
Verify we can dump a `stackscope` tree on a hang.
|
||||
|
||||
'''
|
||||
import os
|
||||
import signal
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
@tractor.context
|
||||
async def start_n_shield_hang(
|
||||
ctx: tractor.Context,
|
||||
):
|
||||
# actor: tractor.Actor = tractor.current_actor()
|
||||
|
||||
# sync to parent-side task
|
||||
await ctx.started(os.getpid())
|
||||
|
||||
print('Entering shield sleep..')
|
||||
with trio.CancelScope(shield=True):
|
||||
await trio.sleep_forever() # in subactor
|
||||
|
||||
# XXX NOTE ^^^ since this shields, we expect
|
||||
# the zombie reaper (aka T800) to engage on
|
||||
# SIGINT from the user and eventually hard-kill
|
||||
# this subprocess!
|
||||
|
||||
|
||||
async def main(
|
||||
from_test: bool = False,
|
||||
) -> None:
|
||||
|
||||
async with (
|
||||
tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
enable_stack_on_sig=True,
|
||||
# maybe_enable_greenback=False,
|
||||
loglevel='devx',
|
||||
) as an,
|
||||
):
|
||||
ptl: tractor.Portal = await an.start_actor(
|
||||
'hanger',
|
||||
enable_modules=[__name__],
|
||||
debug_mode=True,
|
||||
)
|
||||
async with ptl.open_context(
|
||||
start_n_shield_hang,
|
||||
) as (ctx, cpid):
|
||||
|
||||
_, proc, _ = an._children[ptl.chan.uid]
|
||||
assert cpid == proc.pid
|
||||
|
||||
print(
|
||||
'Yo my child hanging..?\n'
|
||||
# "i'm a user who wants to see a `stackscope` tree!\n"
|
||||
)
|
||||
|
||||
# XXX simulate the wrapping test's "user actions"
|
||||
# (i.e. if a human didn't run this manually but wants to
|
||||
# know what they should do to reproduce test behaviour)
|
||||
if from_test:
|
||||
print(
|
||||
f'Sending SIGUSR1 to {cpid!r}!\n'
|
||||
)
|
||||
os.kill(
|
||||
cpid,
|
||||
signal.SIGUSR1,
|
||||
)
|
||||
|
||||
# simulate user cancelling program
|
||||
await trio.sleep(0.5)
|
||||
os.kill(
|
||||
os.getpid(),
|
||||
signal.SIGINT,
|
||||
)
|
||||
else:
|
||||
# actually let user send the ctl-c
|
||||
await trio.sleep_forever() # in root
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,88 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def cancellable_pause_loop(
|
||||
task_status: trio.TaskStatus[trio.CancelScope] = trio.TASK_STATUS_IGNORED
|
||||
):
|
||||
with trio.CancelScope() as cs:
|
||||
task_status.started(cs)
|
||||
for _ in range(3):
|
||||
try:
|
||||
# ON first entry, there is no level triggered
|
||||
# cancellation yet, so this cp does a parent task
|
||||
# ctx-switch so that this scope raises for the NEXT
|
||||
# checkpoint we hit.
|
||||
await trio.lowlevel.checkpoint()
|
||||
await tractor.pause()
|
||||
|
||||
cs.cancel()
|
||||
|
||||
# parent should have called `cs.cancel()` by now
|
||||
await trio.lowlevel.checkpoint()
|
||||
|
||||
except trio.Cancelled:
|
||||
print('INSIDE SHIELDED PAUSE')
|
||||
await tractor.pause(shield=True)
|
||||
else:
|
||||
# should raise it again, bubbling up to parent
|
||||
print('BUBBLING trio.Cancelled to parent task-nursery')
|
||||
await trio.lowlevel.checkpoint()
|
||||
|
||||
|
||||
async def pm_on_cancelled():
|
||||
async with trio.open_nursery() as tn:
|
||||
tn.cancel_scope.cancel()
|
||||
try:
|
||||
await trio.sleep_forever()
|
||||
except trio.Cancelled:
|
||||
# should also raise `Cancelled` since
|
||||
# we didn't pass `shield=True`.
|
||||
try:
|
||||
await tractor.post_mortem(hide_tb=False)
|
||||
except trio.Cancelled as taskc:
|
||||
|
||||
# should enter just fine, in fact it should
|
||||
# be debugging the internals of the previous
|
||||
# sin-shield call above Bo
|
||||
await tractor.post_mortem(
|
||||
hide_tb=False,
|
||||
shield=True,
|
||||
)
|
||||
raise taskc
|
||||
|
||||
else:
|
||||
raise RuntimeError('Dint cancel as expected!?')
|
||||
|
||||
|
||||
async def cancelled_before_pause(
|
||||
):
|
||||
'''
|
||||
Verify that using a shielded pause works despite surrounding
|
||||
cancellation called state in the calling task.
|
||||
|
||||
'''
|
||||
async with trio.open_nursery() as tn:
|
||||
cs: trio.CancelScope = await tn.start(cancellable_pause_loop)
|
||||
await trio.sleep(0.1)
|
||||
|
||||
assert cs.cancelled_caught
|
||||
|
||||
await pm_on_cancelled()
|
||||
|
||||
|
||||
async def main():
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
) as n:
|
||||
portal: tractor.Portal = await n.run_in_actor(
|
||||
cancelled_before_pause,
|
||||
)
|
||||
await portal.result()
|
||||
|
||||
# ensure the same works in the root actor!
|
||||
await pm_on_cancelled()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,50 +0,0 @@
|
|||
import tractor
|
||||
import trio
|
||||
|
||||
|
||||
async def gen():
|
||||
yield 'yo'
|
||||
await tractor.pause()
|
||||
yield 'yo'
|
||||
await tractor.pause()
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def just_bp(
|
||||
ctx: tractor.Context,
|
||||
) -> None:
|
||||
|
||||
await ctx.started()
|
||||
await tractor.pause()
|
||||
|
||||
# TODO: bps and errors in this call..
|
||||
async for val in gen():
|
||||
print(val)
|
||||
|
||||
# await trio.sleep(0.5)
|
||||
|
||||
# prematurely destroy the connection
|
||||
await ctx.chan.aclose()
|
||||
|
||||
# THIS CAUSES AN UNRECOVERABLE HANG
|
||||
# without latest ``pdbpp``:
|
||||
assert 0
|
||||
|
||||
|
||||
|
||||
async def main():
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
) as n:
|
||||
p = await n.start_actor(
|
||||
'bp_boi',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
async with p.open_context(
|
||||
just_bp,
|
||||
) as (ctx, first):
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,29 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def breakpoint_forever():
|
||||
'''
|
||||
Indefinitely re-enter debugger in child actor.
|
||||
|
||||
'''
|
||||
while True:
|
||||
await trio.sleep(0.1)
|
||||
await tractor.pause()
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
loglevel='cancel',
|
||||
) as n:
|
||||
|
||||
portal = await n.run_in_actor(
|
||||
breakpoint_forever,
|
||||
)
|
||||
await portal.result()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,29 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def name_error():
|
||||
getattr(doggypants) # noqa (on purpose)
|
||||
|
||||
|
||||
async def main():
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
# loglevel='transport',
|
||||
) as an:
|
||||
|
||||
# TODO: ideally the REPL arrives at this frame in the parent,
|
||||
# ABOVE the @api_frame of `Portal.run_in_actor()` (which
|
||||
# should eventually not even be a portal method ... XD)
|
||||
# await tractor.pause()
|
||||
p: tractor.Portal = await an.run_in_actor(name_error)
|
||||
|
||||
# with this style, should raise on this line
|
||||
await p.result()
|
||||
|
||||
# with this alt style should raise at `open_nusery()`
|
||||
# return await p.result()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,169 +0,0 @@
|
|||
from functools import partial
|
||||
import time
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
# TODO: only import these when not running from test harness?
|
||||
# can we detect `pexpect` usage maybe?
|
||||
# from tractor.devx._debug import (
|
||||
# get_lock,
|
||||
# get_debug_req,
|
||||
# )
|
||||
|
||||
|
||||
def sync_pause(
|
||||
use_builtin: bool = False,
|
||||
error: bool = False,
|
||||
hide_tb: bool = True,
|
||||
pre_sleep: float|None = None,
|
||||
):
|
||||
if pre_sleep:
|
||||
time.sleep(pre_sleep)
|
||||
|
||||
if use_builtin:
|
||||
breakpoint(hide_tb=hide_tb)
|
||||
|
||||
else:
|
||||
# TODO: maybe for testing some kind of cm style interface
|
||||
# where the `._set_trace()` call doesn't happen until block
|
||||
# exit?
|
||||
# assert get_lock().ctx_in_debug is None
|
||||
# assert get_debug_req().repl is None
|
||||
tractor.pause_from_sync()
|
||||
# assert get_debug_req().repl is None
|
||||
|
||||
if error:
|
||||
raise RuntimeError('yoyo sync code error')
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def start_n_sync_pause(
|
||||
ctx: tractor.Context,
|
||||
):
|
||||
actor: tractor.Actor = tractor.current_actor()
|
||||
|
||||
# sync to parent-side task
|
||||
await ctx.started()
|
||||
|
||||
print(f'Entering `sync_pause()` in subactor: {actor.uid}\n')
|
||||
sync_pause()
|
||||
print(f'Exited `sync_pause()` in subactor: {actor.uid}\n')
|
||||
|
||||
|
||||
async def main() -> None:
|
||||
async with (
|
||||
tractor.open_nursery(
|
||||
debug_mode=True,
|
||||
maybe_enable_greenback=True,
|
||||
enable_stack_on_sig=True,
|
||||
# loglevel='warning',
|
||||
# loglevel='devx',
|
||||
) as an,
|
||||
trio.open_nursery() as tn,
|
||||
):
|
||||
# just from root task
|
||||
sync_pause()
|
||||
|
||||
p: tractor.Portal = await an.start_actor(
|
||||
'subactor',
|
||||
enable_modules=[__name__],
|
||||
# infect_asyncio=True,
|
||||
debug_mode=True,
|
||||
)
|
||||
|
||||
# TODO: 3 sub-actor usage cases:
|
||||
# -[x] via a `.open_context()`
|
||||
# -[ ] via a `.run_in_actor()` call
|
||||
# -[ ] via a `.run()`
|
||||
# -[ ] via a `.to_thread.run_sync()` in subactor
|
||||
async with p.open_context(
|
||||
start_n_sync_pause,
|
||||
) as (ctx, first):
|
||||
assert first is None
|
||||
|
||||
# TODO: handle bg-thread-in-root-actor special cases!
|
||||
#
|
||||
# there are a couple very subtle situations possible here
|
||||
# and they are likely to become more important as cpython
|
||||
# moves to support no-GIL.
|
||||
#
|
||||
# Cases:
|
||||
# 1. root-actor bg-threads that call `.pause_from_sync()`
|
||||
# whilst an in-tree subactor also is using ` .pause()`.
|
||||
# |_ since the root-actor bg thread can not
|
||||
# `Lock._debug_lock.acquire_nowait()` without running
|
||||
# a `trio.Task`, AND because the
|
||||
# `PdbREPL.set_continue()` is called from that
|
||||
# bg-thread, we can not `._debug_lock.release()`
|
||||
# either!
|
||||
# |_ this results in no actor-tree `Lock` being used
|
||||
# on behalf of the bg-thread and thus the subactor's
|
||||
# task and the thread trying to to use stdio
|
||||
# simultaneously which results in the classic TTY
|
||||
# clobbering!
|
||||
#
|
||||
# 2. mutiple sync-bg-threads that call
|
||||
# `.pause_from_sync()` where one is scheduled via
|
||||
# `Nursery.start_soon(to_thread.run_sync)` in a bg
|
||||
# task.
|
||||
#
|
||||
# Due to the GIL, the threads never truly try to step
|
||||
# through the REPL simultaneously, BUT their `logging`
|
||||
# and traceback outputs are interleaved since the GIL
|
||||
# (seemingly) on every REPL-input from the user
|
||||
# switches threads..
|
||||
#
|
||||
# Soo, the context switching semantics of the GIL
|
||||
# result in a very confusing and messy interaction UX
|
||||
# since eval and (tb) print output is NOT synced to
|
||||
# each REPL-cycle (like we normally make it via
|
||||
# a `.set_continue()` callback triggering the
|
||||
# `Lock.release()`). Ideally we can solve this
|
||||
# usability issue NOW because this will of course be
|
||||
# that much more important when eventually there is no
|
||||
# GIL!
|
||||
|
||||
# XXX should cause double REPL entry and thus TTY
|
||||
# clobbering due to case 1. above!
|
||||
tn.start_soon(
|
||||
partial(
|
||||
trio.to_thread.run_sync,
|
||||
partial(
|
||||
sync_pause,
|
||||
use_builtin=False,
|
||||
# pre_sleep=0.5,
|
||||
),
|
||||
abandon_on_cancel=True,
|
||||
thread_name='start_soon_root_bg_thread',
|
||||
)
|
||||
)
|
||||
|
||||
await tractor.pause()
|
||||
|
||||
# XXX should cause double REPL entry and thus TTY
|
||||
# clobbering due to case 2. above!
|
||||
await trio.to_thread.run_sync(
|
||||
partial(
|
||||
sync_pause,
|
||||
# NOTE this already works fine since in the new
|
||||
# thread the `breakpoint()` built-in is never
|
||||
# overloaded, thus NO locking is used, HOWEVER
|
||||
# the case 2. from above still exists!
|
||||
use_builtin=True,
|
||||
),
|
||||
# TODO: with this `False` we can hang!??!
|
||||
# abandon_on_cancel=False,
|
||||
abandon_on_cancel=True,
|
||||
thread_name='inline_root_bg_thread',
|
||||
)
|
||||
|
||||
await ctx.cancel()
|
||||
|
||||
# TODO: case where we cancel from trio-side while asyncio task
|
||||
# has debugger lock?
|
||||
await p.cancel_actor()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,128 +0,0 @@
|
|||
import time
|
||||
import trio
|
||||
import tractor
|
||||
from tractor import (
|
||||
ActorNursery,
|
||||
MsgStream,
|
||||
Portal,
|
||||
)
|
||||
|
||||
|
||||
# this is the first 2 actors, streamer_1 and streamer_2
|
||||
async def stream_data(seed):
|
||||
for i in range(seed):
|
||||
yield i
|
||||
await trio.sleep(0.0001) # trigger scheduler
|
||||
|
||||
|
||||
# this is the third actor; the aggregator
|
||||
async def aggregate(seed):
|
||||
'''
|
||||
Ensure that the two streams we receive match but only stream
|
||||
a single set of values to the parent.
|
||||
|
||||
'''
|
||||
an: ActorNursery
|
||||
async with tractor.open_nursery() as an:
|
||||
portals: list[Portal] = []
|
||||
for i in range(1, 3):
|
||||
|
||||
# fork/spawn call
|
||||
portal = await an.start_actor(
|
||||
name=f'streamer_{i}',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
portals.append(portal)
|
||||
|
||||
send_chan, recv_chan = trio.open_memory_channel(500)
|
||||
|
||||
async def push_to_chan(portal, send_chan):
|
||||
|
||||
# TODO: https://github.com/goodboy/tractor/issues/207
|
||||
async with send_chan:
|
||||
async with portal.open_stream_from(stream_data, seed=seed) as stream:
|
||||
async for value in stream:
|
||||
# leverage trio's built-in backpressure
|
||||
await send_chan.send(value)
|
||||
|
||||
print(f"FINISHED ITERATING {portal.channel.uid}")
|
||||
|
||||
# spawn 2 trio tasks to collect streams and push to a local queue
|
||||
async with trio.open_nursery() as n:
|
||||
|
||||
for portal in portals:
|
||||
n.start_soon(
|
||||
push_to_chan,
|
||||
portal,
|
||||
send_chan.clone(),
|
||||
)
|
||||
|
||||
# close this local task's reference to send side
|
||||
await send_chan.aclose()
|
||||
|
||||
unique_vals = set()
|
||||
async with recv_chan:
|
||||
async for value in recv_chan:
|
||||
if value not in unique_vals:
|
||||
unique_vals.add(value)
|
||||
# yield upwards to the spawning parent actor
|
||||
yield value
|
||||
|
||||
assert value in unique_vals
|
||||
|
||||
print("FINISHED ITERATING in aggregator")
|
||||
|
||||
await an.cancel()
|
||||
print("WAITING on `ActorNursery` to finish")
|
||||
print("AGGREGATOR COMPLETE!")
|
||||
|
||||
|
||||
async def main() -> list[int]:
|
||||
'''
|
||||
This is the "root" actor's main task's entrypoint.
|
||||
|
||||
By default (and if not otherwise specified) that root process
|
||||
also acts as a "registry actor" / "registrar" on the localhost
|
||||
for the purposes of multi-actor "service discovery".
|
||||
|
||||
'''
|
||||
# yes, a nursery which spawns `trio`-"actors" B)
|
||||
an: ActorNursery
|
||||
async with tractor.open_nursery(
|
||||
loglevel='cancel',
|
||||
# debug_mode=True,
|
||||
) as an:
|
||||
|
||||
seed = int(1e3)
|
||||
pre_start = time.time()
|
||||
|
||||
portal: Portal = await an.start_actor(
|
||||
name='aggregator',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
stream: MsgStream
|
||||
async with portal.open_stream_from(
|
||||
aggregate,
|
||||
seed=seed,
|
||||
) as stream:
|
||||
|
||||
start = time.time()
|
||||
# the portal call returns exactly what you'd expect
|
||||
# as if the remote "aggregate" function was called locally
|
||||
result_stream: list[int] = []
|
||||
async for value in stream:
|
||||
result_stream.append(value)
|
||||
|
||||
cancelled: bool = await portal.cancel_actor()
|
||||
assert cancelled
|
||||
|
||||
print(f"STREAM TIME = {time.time() - start}")
|
||||
print(f"STREAM + SPAWN TIME = {time.time() - pre_start}")
|
||||
assert result_stream == list(range(seed))
|
||||
return result_stream
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
final_stream = trio.run(main)
|
||||
|
|
@ -1,92 +0,0 @@
|
|||
'''
|
||||
An SC compliant infected ``asyncio`` echo server.
|
||||
|
||||
'''
|
||||
import asyncio
|
||||
from statistics import mean
|
||||
import time
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def aio_echo_server(
|
||||
to_trio: trio.MemorySendChannel,
|
||||
from_trio: asyncio.Queue,
|
||||
|
||||
) -> None:
|
||||
|
||||
# a first message must be sent **from** this ``asyncio``
|
||||
# task or the ``trio`` side will never unblock from
|
||||
# ``tractor.to_asyncio.open_channel_from():``
|
||||
to_trio.send_nowait('start')
|
||||
|
||||
# XXX: this uses an ``from_trio: asyncio.Queue`` currently but we
|
||||
# should probably offer something better.
|
||||
while True:
|
||||
# echo the msg back
|
||||
to_trio.send_nowait(await from_trio.get())
|
||||
await asyncio.sleep(0)
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def trio_to_aio_echo_server(
|
||||
ctx: tractor.Context,
|
||||
):
|
||||
# this will block until the ``asyncio`` task sends a "first"
|
||||
# message.
|
||||
async with tractor.to_asyncio.open_channel_from(
|
||||
aio_echo_server,
|
||||
) as (first, chan):
|
||||
|
||||
assert first == 'start'
|
||||
await ctx.started(first)
|
||||
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
async for msg in stream:
|
||||
await chan.send(msg)
|
||||
|
||||
out = await chan.receive()
|
||||
# echo back to parent actor-task
|
||||
await stream.send(out)
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery() as n:
|
||||
p = await n.start_actor(
|
||||
'aio_server',
|
||||
enable_modules=[__name__],
|
||||
infect_asyncio=True,
|
||||
)
|
||||
async with p.open_context(
|
||||
trio_to_aio_echo_server,
|
||||
) as (ctx, first):
|
||||
|
||||
assert first == 'start'
|
||||
|
||||
count = 0
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
delays = []
|
||||
send = time.time()
|
||||
|
||||
await stream.send(count)
|
||||
async for msg in stream:
|
||||
recv = time.time()
|
||||
delays.append(recv - send)
|
||||
assert msg == count
|
||||
count += 1
|
||||
send = time.time()
|
||||
await stream.send(count)
|
||||
|
||||
if count >= 1e3:
|
||||
break
|
||||
|
||||
print(f'mean round trip rate (Hz): {1/mean(delays)}')
|
||||
await p.cancel_actor()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,49 +0,0 @@
|
|||
import trio
|
||||
import click
|
||||
import tractor
|
||||
import pydantic
|
||||
# from multiprocessing import shared_memory
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def just_sleep(
|
||||
|
||||
ctx: tractor.Context,
|
||||
**kwargs,
|
||||
|
||||
) -> None:
|
||||
'''
|
||||
Test a small ping-pong 2-way streaming server.
|
||||
|
||||
'''
|
||||
await ctx.started()
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
async def main() -> None:
|
||||
|
||||
proc = await trio.open_process( (
|
||||
'python',
|
||||
'-c',
|
||||
'import trio; trio.run(trio.sleep_forever)',
|
||||
))
|
||||
await proc.wait()
|
||||
# await trio.sleep_forever()
|
||||
# async with tractor.open_nursery() as n:
|
||||
|
||||
# portal = await n.start_actor(
|
||||
# 'rpc_server',
|
||||
# enable_modules=[__name__],
|
||||
# )
|
||||
|
||||
# async with portal.open_context(
|
||||
# just_sleep, # taken from pytest parameterization
|
||||
# ) as (ctx, sent):
|
||||
# await trio.sleep_forever()
|
||||
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
import time
|
||||
# time.sleep(999)
|
||||
trio.run(main)
|
||||
|
|
@ -1,46 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
log = tractor.log.get_logger('multiportal')
|
||||
|
||||
|
||||
async def stream_data(seed=10):
|
||||
log.info("Starting stream task")
|
||||
|
||||
for i in range(seed):
|
||||
yield i
|
||||
await trio.sleep(0) # trigger scheduler
|
||||
|
||||
|
||||
async def stream_from_portal(p, consumed):
|
||||
|
||||
async with p.open_stream_from(stream_data) as stream:
|
||||
async for item in stream:
|
||||
if item in consumed:
|
||||
consumed.remove(item)
|
||||
else:
|
||||
consumed.append(item)
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery(loglevel='info') as an:
|
||||
|
||||
p = await an.start_actor('stream_boi', enable_modules=[__name__])
|
||||
|
||||
consumed = []
|
||||
|
||||
async with trio.open_nursery() as n:
|
||||
for i in range(2):
|
||||
n.start_soon(stream_from_portal, p, consumed)
|
||||
|
||||
# both streaming consumer tasks have completed and so we should
|
||||
# have nothing in our list thanks to single threadedness
|
||||
assert not consumed
|
||||
|
||||
await an.cancel()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,43 +0,0 @@
|
|||
import time
|
||||
import concurrent.futures
|
||||
import math
|
||||
|
||||
PRIMES = [
|
||||
112272535095293,
|
||||
112582705942171,
|
||||
112272535095293,
|
||||
115280095190773,
|
||||
115797848077099,
|
||||
1099726899285419]
|
||||
|
||||
|
||||
def is_prime(n):
|
||||
if n < 2:
|
||||
return False
|
||||
if n == 2:
|
||||
return True
|
||||
if n % 2 == 0:
|
||||
return False
|
||||
|
||||
sqrt_n = int(math.floor(math.sqrt(n)))
|
||||
for i in range(3, sqrt_n + 1, 2):
|
||||
if n % i == 0:
|
||||
return False
|
||||
return True
|
||||
|
||||
|
||||
def main():
|
||||
with concurrent.futures.ProcessPoolExecutor() as executor:
|
||||
start = time.time()
|
||||
|
||||
for number, prime in zip(PRIMES, executor.map(is_prime, PRIMES)):
|
||||
print('%d is prime: %s' % (number, prime))
|
||||
|
||||
print(f'processing took {time.time() - start} seconds')
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
|
||||
start = time.time()
|
||||
main()
|
||||
print(f'script took {time.time() - start} seconds')
|
||||
|
|
@ -1,121 +0,0 @@
|
|||
"""
|
||||
Demonstration of the prime number detector example from the
|
||||
``concurrent.futures`` docs:
|
||||
|
||||
https://docs.python.org/3/library/concurrent.futures.html#processpoolexecutor-example
|
||||
|
||||
This uses no extra threads, fancy semaphores or futures; all we need
|
||||
is ``tractor``'s channels.
|
||||
|
||||
"""
|
||||
from contextlib import (
|
||||
asynccontextmanager as acm,
|
||||
aclosing,
|
||||
)
|
||||
from typing import Callable
|
||||
import itertools
|
||||
import math
|
||||
import time
|
||||
|
||||
import tractor
|
||||
import trio
|
||||
|
||||
|
||||
PRIMES = [
|
||||
112272535095293,
|
||||
112582705942171,
|
||||
112272535095293,
|
||||
115280095190773,
|
||||
115797848077099,
|
||||
1099726899285419,
|
||||
]
|
||||
|
||||
|
||||
async def is_prime(n):
|
||||
if n < 2:
|
||||
return False
|
||||
if n == 2:
|
||||
return True
|
||||
if n % 2 == 0:
|
||||
return False
|
||||
|
||||
sqrt_n = int(math.floor(math.sqrt(n)))
|
||||
for i in range(3, sqrt_n + 1, 2):
|
||||
if n % i == 0:
|
||||
return False
|
||||
return True
|
||||
|
||||
|
||||
@acm
|
||||
async def worker_pool(workers=4):
|
||||
"""Though it's a trivial special case for ``tractor``, the well
|
||||
known "worker pool" seems to be the defacto "but, I want this
|
||||
process pattern!" for most parallelism pilgrims.
|
||||
|
||||
Yes, the workers stay alive (and ready for work) until you close
|
||||
the context.
|
||||
"""
|
||||
async with tractor.open_nursery() as tn:
|
||||
|
||||
portals = []
|
||||
snd_chan, recv_chan = trio.open_memory_channel(len(PRIMES))
|
||||
|
||||
for i in range(workers):
|
||||
|
||||
# this starts a new sub-actor (process + trio runtime) and
|
||||
# stores it's "portal" for later use to "submit jobs" (ugh).
|
||||
portals.append(
|
||||
await tn.start_actor(
|
||||
f'worker_{i}',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
)
|
||||
|
||||
async def _map(
|
||||
worker_func: Callable[[int], bool],
|
||||
sequence: list[int]
|
||||
) -> list[bool]:
|
||||
|
||||
# define an async (local) task to collect results from workers
|
||||
async def send_result(func, value, portal):
|
||||
await snd_chan.send((value, await portal.run(func, n=value)))
|
||||
|
||||
async with trio.open_nursery() as n:
|
||||
|
||||
for value, portal in zip(sequence, itertools.cycle(portals)):
|
||||
n.start_soon(
|
||||
send_result,
|
||||
worker_func,
|
||||
value,
|
||||
portal
|
||||
)
|
||||
|
||||
# deliver results as they arrive
|
||||
for _ in range(len(sequence)):
|
||||
yield await recv_chan.receive()
|
||||
|
||||
# deliver the parallel "worker mapper" to user code
|
||||
yield _map
|
||||
|
||||
# tear down all "workers" on pool close
|
||||
await tn.cancel()
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with worker_pool() as actor_map:
|
||||
|
||||
start = time.time()
|
||||
|
||||
async with aclosing(actor_map(is_prime, PRIMES)) as results:
|
||||
async for number, prime in results:
|
||||
|
||||
print(f'{number} is prime: {prime}')
|
||||
|
||||
print(f'processing took {time.time() - start} seconds')
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
start = time.time()
|
||||
trio.run(main)
|
||||
print(f'script took {time.time() - start} seconds')
|
||||
|
|
@ -1,43 +0,0 @@
|
|||
"""
|
||||
Run with a process monitor from a terminal using::
|
||||
|
||||
$TERM -e watch -n 0.1 "pstree -a $$" \
|
||||
& python examples/parallelism/single_func.py \
|
||||
&& kill $!
|
||||
|
||||
"""
|
||||
import os
|
||||
|
||||
import tractor
|
||||
import trio
|
||||
|
||||
|
||||
async def burn_cpu():
|
||||
|
||||
pid = os.getpid()
|
||||
|
||||
# burn a core @ ~ 50kHz
|
||||
for _ in range(50000):
|
||||
await trio.sleep(1/50000/50)
|
||||
|
||||
return os.getpid()
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.run_in_actor(burn_cpu)
|
||||
|
||||
# burn rubber in the parent too
|
||||
await burn_cpu()
|
||||
|
||||
# wait on result from target function
|
||||
pid = await portal.result()
|
||||
|
||||
# end of nursery block
|
||||
print(f"Collected subproc {pid}")
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,43 +0,0 @@
|
|||
"""
|
||||
Run with a process monitor from a terminal using::
|
||||
|
||||
$TERM -e watch -n 0.1 "pstree -a $$" \
|
||||
& python examples/parallelism/we_are_processes.py \
|
||||
&& kill $!
|
||||
|
||||
"""
|
||||
from multiprocessing import cpu_count
|
||||
import os
|
||||
|
||||
import tractor
|
||||
import trio
|
||||
|
||||
|
||||
async def target():
|
||||
print(
|
||||
f"Yo, i'm '{tractor.current_actor().name}' "
|
||||
f"running in pid {os.getpid()}"
|
||||
)
|
||||
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
for i in range(cpu_count()):
|
||||
await n.run_in_actor(target, name=f'worker_{i}')
|
||||
|
||||
print('This process tree will self-destruct in 1 sec...')
|
||||
await trio.sleep(1)
|
||||
|
||||
# you could have done this yourself
|
||||
raise Exception('Self Destructed')
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
try:
|
||||
trio.run(main)
|
||||
except Exception:
|
||||
print('Zombies Contained')
|
||||
|
|
@ -1,47 +0,0 @@
|
|||
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def sleepy_jane() -> None:
|
||||
uid: tuple = tractor.current_actor().uid
|
||||
print(f'Yo i am actor {uid}')
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
async def main():
|
||||
'''
|
||||
Spawn a flat actor cluster, with one process per detected core.
|
||||
|
||||
'''
|
||||
portal_map: dict[str, tractor.Portal]
|
||||
|
||||
# look at this hip new syntax!
|
||||
async with (
|
||||
|
||||
tractor.open_actor_cluster(
|
||||
modules=[__name__]
|
||||
) as portal_map,
|
||||
|
||||
trio.open_nursery(
|
||||
strict_exception_groups=False,
|
||||
) as tn,
|
||||
):
|
||||
|
||||
for (name, portal) in portal_map.items():
|
||||
tn.start_soon(
|
||||
portal.run,
|
||||
sleepy_jane,
|
||||
)
|
||||
|
||||
await trio.sleep(0.5)
|
||||
|
||||
# kill the cluster with a cancel
|
||||
raise KeyboardInterrupt
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
try:
|
||||
trio.run(main)
|
||||
except KeyboardInterrupt:
|
||||
print('trio cancelled by KBI')
|
||||
|
|
@ -1,30 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
async def assert_err():
|
||||
assert 0
|
||||
|
||||
|
||||
async def main():
|
||||
async with tractor.open_nursery() as n:
|
||||
real_actors = []
|
||||
for i in range(3):
|
||||
real_actors.append(await n.start_actor(
|
||||
f'actor_{i}',
|
||||
enable_modules=[__name__],
|
||||
))
|
||||
|
||||
# start one actor that will fail immediately
|
||||
await n.run_in_actor(assert_err)
|
||||
|
||||
# should error here with a ``RemoteActorError`` containing
|
||||
# an ``AssertionError`` and all the other actors have been cancelled
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
try:
|
||||
# also raises
|
||||
trio.run(main)
|
||||
except tractor.RemoteActorError:
|
||||
print("Look Maa that actor failed hard, hehhh!")
|
||||
|
|
@ -1,72 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def simple_rpc(
|
||||
|
||||
ctx: tractor.Context,
|
||||
data: int,
|
||||
|
||||
) -> None:
|
||||
'''Test a small ping-pong 2-way streaming server.
|
||||
|
||||
'''
|
||||
# signal to parent that we're up much like
|
||||
# ``trio.TaskStatus.started()``
|
||||
await ctx.started(data + 1)
|
||||
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
count = 0
|
||||
async for msg in stream:
|
||||
|
||||
assert msg == 'ping'
|
||||
await stream.send('pong')
|
||||
count += 1
|
||||
|
||||
else:
|
||||
assert count == 10
|
||||
|
||||
|
||||
async def main() -> None:
|
||||
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.start_actor(
|
||||
'rpc_server',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
# XXX: syntax requires py3.9
|
||||
async with (
|
||||
|
||||
portal.open_context(
|
||||
simple_rpc, # taken from pytest parameterization
|
||||
data=10,
|
||||
|
||||
) as (ctx, sent),
|
||||
|
||||
ctx.open_stream() as stream,
|
||||
):
|
||||
|
||||
assert sent == 11
|
||||
|
||||
count = 0
|
||||
# receive msgs using async for style
|
||||
await stream.send('ping')
|
||||
|
||||
async for msg in stream:
|
||||
assert msg == 'pong'
|
||||
await stream.send('ping')
|
||||
count += 1
|
||||
|
||||
if count >= 9:
|
||||
break
|
||||
|
||||
# explicitly teardown the daemon-actor
|
||||
await portal.cancel_actor()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main)
|
||||
|
|
@ -1,22 +0,0 @@
|
|||
import trio
|
||||
import tractor
|
||||
|
||||
tractor.log.get_console_log("INFO")
|
||||
|
||||
|
||||
async def main(service_name):
|
||||
|
||||
async with tractor.open_nursery() as an:
|
||||
await an.start_actor(service_name)
|
||||
|
||||
async with tractor.get_registry('127.0.0.1', 1616) as portal:
|
||||
print(f"Arbiter is listening on {portal.channel}")
|
||||
|
||||
async with tractor.wait_for_actor(service_name) as sockaddr:
|
||||
print(f"my_service is found at {sockaddr}")
|
||||
|
||||
await an.cancel()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
trio.run(main, 'some_actor_name')
|
||||
|
|
@ -1 +0,0 @@
|
|||
!.gitignore
|
||||
|
|
@ -1,16 +0,0 @@
|
|||
Strictly support Python 3.10+, start runtime machinery reorg
|
||||
|
||||
Since we want to push forward using the new `match:` syntax for our
|
||||
internal RPC-msg loops, we officially drop 3.9 support for the next
|
||||
release which should coincide well with the first release of 3.11.
|
||||
|
||||
This patch set also officially removes the ``tractor.run()`` API (which
|
||||
has been deprecated for some time) as well as starts an initial re-org
|
||||
of the internal runtime core by:
|
||||
- renaming ``tractor._actor`` -> ``._runtime``
|
||||
- moving the ``._runtime.ActorActor._process_messages()`` and
|
||||
``._async_main()`` to be module level singleton-task-functions since
|
||||
they are only started once for each connection and actor spawn
|
||||
respectively; this internal API thus looks more similar to (at the
|
||||
time of writing) the ``trio``-internals in ``trio._core._run``.
|
||||
- officially remove ``tractor.run()``, now deprecated for some time.
|
||||
|
|
@ -1,4 +0,0 @@
|
|||
Only set `._debug.Lock.local_pdb_complete` if has been created.
|
||||
|
||||
This can be triggered by a very rare race condition (and thus we have no
|
||||
working test yet) but it is known to exist in (a) consumer project(s).
|
||||
|
|
@ -1,25 +0,0 @@
|
|||
Add support for ``trio >= 0.22`` and support for the new Python 3.11
|
||||
``[Base]ExceptionGroup`` from `pep 654`_ via the backported
|
||||
`exceptiongroup`_ package and some final fixes to the debug mode
|
||||
subsystem.
|
||||
|
||||
This port ended up driving some (hopefully) final fixes to our debugger
|
||||
subsystem including the solution to all lingering stdstreams locking
|
||||
race-conditions and deadlock scenarios. This includes extending the
|
||||
debugger tests suite as well as cancellation and ``asyncio`` mode cases.
|
||||
Some of the notable details:
|
||||
|
||||
- always reverting to the ``trio`` SIGINT handler when leaving debug
|
||||
mode.
|
||||
- bypassing child attempts to acquire the debug lock when detected
|
||||
to be amdist actor-runtime-cancellation.
|
||||
- allowing the root actor to cancel local but IPC-stale subactor
|
||||
requests-tasks for the debug lock when in a "no IPC peers" state.
|
||||
|
||||
Further we refined our ``ActorNursery`` semantics to be more similar to
|
||||
``trio`` in the sense that parent task errors are always packed into the
|
||||
actor-nursery emitted exception group and adjusted all tests and
|
||||
examples accordingly.
|
||||
|
||||
.. _pep 654: https://peps.python.org/pep-0654/#handling-exception-groups
|
||||
.. _exceptiongroup: https://github.com/python-trio/exceptiongroup
|
||||
|
|
@ -1,5 +0,0 @@
|
|||
Establish an explicit "backend spawning" method table; use it from CI
|
||||
|
||||
More clearly lays out the current set of (3) backends: ``['trio',
|
||||
'mp_spawn', 'mp_forkserver']`` and adjusts the ``._spawn.py`` internals
|
||||
as well as the test suite to accommodate.
|
||||
|
|
@ -1,4 +0,0 @@
|
|||
Add ``key: Callable[..., Hashable]`` support to ``.trionics.maybe_open_context()``
|
||||
|
||||
Gives users finer grained control over cache hit behaviour using
|
||||
a callable which receives the input ``kwargs: dict``.
|
||||
|
|
@ -1,41 +0,0 @@
|
|||
Add support for debug-lock blocking using a ``._debug.Lock._blocked:
|
||||
set[tuple]`` and add ids when no-more IPC connections with the
|
||||
root actor are detected.
|
||||
|
||||
This is an enhancement which (mostly) solves a lingering debugger
|
||||
locking race case we needed to handle:
|
||||
|
||||
- child crashes acquires TTY lock in root and attaches to ``pdb``
|
||||
- child IPC goes down such that all channels to the root are broken
|
||||
/ non-functional.
|
||||
- root is stuck thinking the child is still in debug even though it
|
||||
can't be contacted and the child actor machinery hasn't been
|
||||
cancelled by its parent.
|
||||
- root get's stuck in deadlock with child since it won't send a cancel
|
||||
request until the child is finished debugging (to avoid clobbering
|
||||
a child that is actually using the debugger), but the child can't
|
||||
unlock the debugger bc IPC is down and it can't contact the root.
|
||||
|
||||
To avoid this scenario add debug lock blocking list via
|
||||
`._debug.Lock._blocked: set[tuple]` which holds actor uids for any actor
|
||||
that is detected by the root as having no transport channel connections
|
||||
(of which at least one should exist if this sub-actor at some point
|
||||
acquired the debug lock). The root consequently checks this list for any
|
||||
actor that tries to (re)acquire the lock and blocks with
|
||||
a ``ContextCancelled``. Further, when a debug condition is tested in
|
||||
``._runtime._invoke``, the context's ``._enter_debugger_on_cancel`` is
|
||||
set to `False` if the actor was put on the block list then all
|
||||
post-mortem / crash handling will be bypassed for that task.
|
||||
|
||||
In theory this approach to block list management may cause problems
|
||||
where some nested child actor acquires and releases the lock multiple
|
||||
times and it gets stuck on the block list after the first use? If this
|
||||
turns out to be an issue we can try changing the strat so blocks are
|
||||
only added when the root has zero IPC peers left?
|
||||
|
||||
Further, this adds a root-locking-task side cancel scope,
|
||||
``Lock._root_local_task_cs_in_debug``, which can be ``.cancel()``-ed by the root
|
||||
runtime when a stale lock is detected during the IPC channel testing.
|
||||
However, right now we're NOT using this since it seems to cause test
|
||||
failures likely due to causing pre-mature cancellation and maybe needs
|
||||
a bit more experimenting?
|
||||
|
|
@ -1,19 +0,0 @@
|
|||
Rework our ``.trionics.BroadcastReceiver`` internals to avoid method
|
||||
recursion and approach a design and interface closer to ``trio``'s
|
||||
``MemoryReceiveChannel``.
|
||||
|
||||
The details of the internal changes include:
|
||||
|
||||
- implementing a ``BroadcastReceiver.receive_nowait()`` and using it
|
||||
within the async ``.receive()`` thus avoiding recursion from
|
||||
``.receive()``.
|
||||
- failing over to an internal ``._receive_from_underlying()`` when the
|
||||
``_nowait()`` call raises ``trio.WouldBlock``
|
||||
- adding ``BroadcastState.statistics()`` for debugging and testing both
|
||||
internals and by users.
|
||||
- add an internal ``BroadcastReceiver._raise_on_lag: bool`` which can be
|
||||
set to avoid ``Lagged`` raising for possible use cases where a user
|
||||
wants to choose between a [cheap or nasty
|
||||
pattern](https://zguide.zeromq.org/docs/chapter7/#The-Cheap-or-Nasty-Pattern)
|
||||
the the particular stream (we use this in ``piker``'s dark clearing
|
||||
engine to avoid fast feeds breaking during HFT periods).
|
||||
|
|
@ -1,11 +0,0 @@
|
|||
Always ``list``-cast the ``mngrs`` input to
|
||||
``.trionics.gather_contexts()`` and ensure its size otherwise raise
|
||||
a ``ValueError``.
|
||||
|
||||
Turns out that trying to pass an inline-style generator comprehension
|
||||
doesn't seem to work inside the ``async with`` expression? Further, in
|
||||
such a case we can get a hang waiting on the all-entered event
|
||||
completion when the internal mngrs iteration is a noop. Instead we
|
||||
always greedily check a size and error on empty input; the lazy
|
||||
iteration of a generator input is not beneficial anyway since we're
|
||||
entering all manager instances in concurrent tasks.
|
||||
|
|
@ -1,15 +0,0 @@
|
|||
Fixes to ensure IPC (channel) breakage doesn't result in hung actor
|
||||
trees; the zombie reaping and general supervision machinery will always
|
||||
clean up and terminate.
|
||||
|
||||
This includes not only the (mostly minor) fixes to solve these cases but
|
||||
also a new extensive test suite in `test_advanced_faults.py` with an
|
||||
accompanying highly configurable example module-script in
|
||||
`examples/advanced_faults/ipc_failure_during_stream.py`. Tests ensure we
|
||||
never get hang or zombies despite operating in debug mode and attempt to
|
||||
simulate all possible IPC transport failure cases for a local-host actor
|
||||
tree.
|
||||
|
||||
Further we simplify `Context.open_stream.__aexit__()` to just call
|
||||
`MsgStream.aclose()` directly more or less avoiding a pure duplicate
|
||||
code path.
|
||||
|
|
@ -1,10 +0,0 @@
|
|||
Always redraw the `pdbpp` prompt on `SIGINT` during REPL use.
|
||||
|
||||
There was recent changes todo with Python 3.10 that required us to pin
|
||||
to a specific commit in `pdbpp` which have recently been fixed minus
|
||||
this last issue with `SIGINT` shielding: not clobbering or not
|
||||
showing the `(Pdb++)` prompt on ctlr-c by the user. This repairs all
|
||||
that by firstly removing the standard KBI intercepting of the std lib's
|
||||
`pdb.Pdb._cmdloop()` as well as ensuring that only the actor with REPL
|
||||
control ever reports `SIGINT` handler log msgs and prompt redraws. With
|
||||
this we move back to using pypi `pdbpp` release.
|
||||
|
|
@ -1,7 +0,0 @@
|
|||
Drop `trio.Process.aclose()` usage, copy into our spawning code.
|
||||
|
||||
The details are laid out in https://github.com/goodboy/tractor/issues/330.
|
||||
`trio` changed is process running quite some time ago, this just copies
|
||||
out the small bit we needed (from the old `.aclose()`) for hard kills
|
||||
where a soft runtime cancel request fails and our "zombie killer"
|
||||
implementation kicks in.
|
||||
|
|
@ -1,15 +0,0 @@
|
|||
Switch to using the fork & fix of `pdb++`, `pdbp`:
|
||||
https://github.com/mdmintz/pdbp
|
||||
|
||||
Allows us to sidestep a variety of issues that aren't being maintained
|
||||
in the upstream project thanks to the hard work of @mdmintz!
|
||||
|
||||
We also include some default settings adjustments as per recent
|
||||
development on the fork:
|
||||
|
||||
- sticky mode is still turned on by default but now activates when
|
||||
a using the `ll` repl command.
|
||||
- turn off line truncation by default to avoid inter-line gaps when
|
||||
resizing the terimnal during use.
|
||||
- when using the backtrace cmd either by `w` or `bt`, the config
|
||||
automatically switches to non-sticky mode.
|
||||
|
|
@ -1,8 +0,0 @@
|
|||
See both the `towncrier docs`_ and the `pluggy release readme`_ for hot
|
||||
tips. We basically have the most minimal setup and release process right
|
||||
now and use the default `fragment set`_.
|
||||
|
||||
|
||||
.. _towncrier docs: https://github.com/twisted/towncrier#quick-start
|
||||
.. _pluggy release readme: https://github.com/pytest-dev/pluggy/blob/main/changelog/README.rst
|
||||
.. _fragment set: https://github.com/twisted/towncrier#news-fragments
|
||||
|
|
@ -1,37 +0,0 @@
|
|||
{% for section in sections %}
|
||||
{% set underline = "-" %}
|
||||
{% if section %}
|
||||
{{section}}
|
||||
{{ underline * section|length }}{% set underline = "~" %}
|
||||
|
||||
{% endif %}
|
||||
{% if sections[section] %}
|
||||
{% for category, val in definitions.items() if category in sections[section] %}
|
||||
|
||||
{{ definitions[category]['name'] }}
|
||||
{{ underline * definitions[category]['name']|length }}
|
||||
|
||||
{% if definitions[category]['showcontent'] %}
|
||||
{% for text, values in sections[section][category]|dictsort(by='value') %}
|
||||
{% set issue_joiner = joiner(', ') %}
|
||||
- {% for value in values|sort %}{{ issue_joiner() }}`{{ value }} <https://github.com/goodboy/tractor/issues/{{ value[1:] }}>`_{% endfor %}: {{ text }}
|
||||
|
||||
{% endfor %}
|
||||
{% else %}
|
||||
- {{ sections[section][category]['']|sort|join(', ') }}
|
||||
|
||||
|
||||
{% endif %}
|
||||
{% if sections[section][category]|length == 0 %}
|
||||
|
||||
No significant changes.
|
||||
|
||||
{% else %}
|
||||
{% endif %}
|
||||
{% endfor %}
|
||||
{% else %}
|
||||
|
||||
No significant changes.
|
||||
|
||||
{% endif %}
|
||||
{% endfor %}
|
||||
|
|
@ -1,18 +0,0 @@
|
|||
First generate a built disti:
|
||||
|
||||
```
|
||||
python -m pip install --upgrade build
|
||||
python -m build --sdist --outdir dist/alpha5/
|
||||
```
|
||||
|
||||
Then try a test ``pypi`` upload:
|
||||
|
||||
```
|
||||
python -m twine upload --repository testpypi dist/alpha5/*
|
||||
```
|
||||
|
||||
The push to `pypi` for realz.
|
||||
|
||||
```
|
||||
python -m twine upload --repository testpypi dist/alpha5/*
|
||||
```
|
||||
158
pyproject.toml
158
pyproject.toml
|
|
@ -1,158 +0,0 @@
|
|||
[build-system]
|
||||
requires = ["hatchling"]
|
||||
build-backend = "hatchling.build"
|
||||
|
||||
# ------ build-system ------
|
||||
|
||||
[project]
|
||||
name = "tractor"
|
||||
version = "0.1.0a6dev0"
|
||||
description = 'structured concurrent `trio`-"actors"'
|
||||
authors = [{ name = "Tyler Goodlet", email = "goodboy_foss@protonmail.com" }]
|
||||
requires-python = ">= 3.11"
|
||||
readme = "docs/README.rst"
|
||||
license = "AGPL-3.0-or-later"
|
||||
keywords = [
|
||||
"trio",
|
||||
"async",
|
||||
"concurrency",
|
||||
"structured concurrency",
|
||||
"actor model",
|
||||
"distributed",
|
||||
"multiprocessing",
|
||||
]
|
||||
classifiers = [
|
||||
"Development Status :: 3 - Alpha",
|
||||
"Operating System :: POSIX :: Linux",
|
||||
"Framework :: Trio",
|
||||
"License :: OSI Approved :: GNU Affero General Public License v3 or later (AGPLv3+)",
|
||||
"Programming Language :: Python :: Implementation :: CPython",
|
||||
"Programming Language :: Python :: 3 :: Only",
|
||||
"Programming Language :: Python :: 3.11",
|
||||
"Topic :: System :: Distributed Computing",
|
||||
]
|
||||
dependencies = [
|
||||
# trio runtime and friends
|
||||
# (poetry) proper range specs,
|
||||
# https://packaging.python.org/en/latest/discussions/install-requires-vs-requirements/#id5
|
||||
# TODO, for 3.13 we must go go `0.27` which means we have to
|
||||
# disable strict egs or port to handling them internally!
|
||||
"trio>0.27",
|
||||
"tricycle>=0.4.1,<0.5",
|
||||
"wrapt>=1.16.0,<2",
|
||||
"colorlog>=6.8.2,<7",
|
||||
# built-in multi-actor `pdb` REPL
|
||||
"pdbp>=1.6,<2", # windows only (from `pdbp`)
|
||||
# typed IPC msging
|
||||
"msgspec>=0.19.0",
|
||||
]
|
||||
|
||||
# ------ project ------
|
||||
|
||||
[dependency-groups]
|
||||
dev = [
|
||||
# test suite
|
||||
# TODO: maybe some of these layout choices?
|
||||
# https://docs.pytest.org/en/8.0.x/explanation/goodpractices.html#choosing-a-test-layout-import-rules
|
||||
"pytest>=8.3.5",
|
||||
"pexpect>=4.9.0,<5",
|
||||
# `tractor.devx` tooling
|
||||
"greenback>=1.2.1,<2",
|
||||
"stackscope>=0.2.2,<0.3",
|
||||
"pyperclip>=1.9.0",
|
||||
"prompt-toolkit>=3.0.50",
|
||||
"xonsh>=0.19.2",
|
||||
]
|
||||
# TODO, add these with sane versions; were originally in
|
||||
# `requirements-docs.txt`..
|
||||
# docs = [
|
||||
# "sphinx>="
|
||||
# "sphinx_book_theme>="
|
||||
# ]
|
||||
|
||||
# ------ dependency-groups ------
|
||||
|
||||
# ------ dependency-groups ------
|
||||
|
||||
[tool.uv.sources]
|
||||
# XXX NOTE, only for @goodboy's hacking on `pprint(sort_dicts=False)`
|
||||
# for the `pp` alias..
|
||||
# pdbp = { path = "../pdbp", editable = true }
|
||||
|
||||
# ------ tool.uv.sources ------
|
||||
# TODO, distributed (multi-host) extensions
|
||||
# linux kernel networking
|
||||
# 'pyroute2
|
||||
|
||||
# ------ tool.uv.sources ------
|
||||
|
||||
[tool.uv]
|
||||
# XXX NOTE, prefer the sys python bc apparently the distis from
|
||||
# `astral` are built in a way that breaks `pdbp`+`tabcompleter`'s
|
||||
# likely due to linking against `libedit` over `readline`..
|
||||
# |_https://docs.astral.sh/uv/concepts/python-versions/#managed-python-distributions
|
||||
# |_https://gregoryszorc.com/docs/python-build-standalone/main/quirks.html#use-of-libedit-on-linux
|
||||
#
|
||||
# https://docs.astral.sh/uv/reference/settings/#python-preference
|
||||
python-preference = 'system'
|
||||
|
||||
# ------ tool.uv ------
|
||||
|
||||
[tool.hatch.build.targets.sdist]
|
||||
include = ["tractor"]
|
||||
|
||||
[tool.hatch.build.targets.wheel]
|
||||
include = ["tractor"]
|
||||
|
||||
# ------ tool.hatch ------
|
||||
|
||||
[tool.towncrier]
|
||||
package = "tractor"
|
||||
filename = "NEWS.rst"
|
||||
directory = "nooz/"
|
||||
version = "0.1.0a6"
|
||||
title_format = "tractor {version} ({project_date})"
|
||||
template = "nooz/_template.rst"
|
||||
all_bullets = true
|
||||
|
||||
[[tool.towncrier.type]]
|
||||
directory = "feature"
|
||||
name = "Features"
|
||||
showcontent = true
|
||||
|
||||
[[tool.towncrier.type]]
|
||||
directory = "bugfix"
|
||||
name = "Bug Fixes"
|
||||
showcontent = true
|
||||
|
||||
[[tool.towncrier.type]]
|
||||
directory = "doc"
|
||||
name = "Improved Documentation"
|
||||
showcontent = true
|
||||
|
||||
[[tool.towncrier.type]]
|
||||
directory = "trivial"
|
||||
name = "Trivial/Internal Changes"
|
||||
showcontent = true
|
||||
|
||||
# ------ tool.towncrier ------
|
||||
|
||||
[tool.pytest.ini_options]
|
||||
minversion = '6.0'
|
||||
testpaths = [
|
||||
'tests'
|
||||
]
|
||||
addopts = [
|
||||
# TODO: figure out why this isn't working..
|
||||
'--rootdir=./tests',
|
||||
|
||||
'--import-mode=importlib',
|
||||
# don't show frickin captured logs AGAIN in the report..
|
||||
'--show-capture=no',
|
||||
]
|
||||
log_cli = false
|
||||
# TODO: maybe some of these layout choices?
|
||||
# https://docs.pytest.org/en/8.0.x/explanation/goodpractices.html#choosing-a-test-layout-import-rules
|
||||
# pythonpath = "src"
|
||||
|
||||
# ------ tool.pytest ------
|
||||
|
|
@ -1,8 +0,0 @@
|
|||
# vim: ft=ini
|
||||
# pytest.ini for tractor
|
||||
|
||||
[pytest]
|
||||
# don't show frickin captured logs AGAIN in the report..
|
||||
addopts = --show-capture='no'
|
||||
log_cli = false
|
||||
; minversion = 6.0
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
pytest
|
||||
pytest-trio
|
||||
pdbpp
|
||||
82
ruff.toml
82
ruff.toml
|
|
@ -1,82 +0,0 @@
|
|||
# from default `ruff.toml` @
|
||||
# https://docs.astral.sh/ruff/configuration/
|
||||
|
||||
# Exclude a variety of commonly ignored directories.
|
||||
exclude = [
|
||||
".bzr",
|
||||
".direnv",
|
||||
".eggs",
|
||||
".git",
|
||||
".git-rewrite",
|
||||
".hg",
|
||||
".ipynb_checkpoints",
|
||||
".mypy_cache",
|
||||
".nox",
|
||||
".pants.d",
|
||||
".pyenv",
|
||||
".pytest_cache",
|
||||
".pytype",
|
||||
".ruff_cache",
|
||||
".svn",
|
||||
".tox",
|
||||
".venv",
|
||||
".vscode",
|
||||
"__pypackages__",
|
||||
"_build",
|
||||
"buck-out",
|
||||
"build",
|
||||
"dist",
|
||||
"node_modules",
|
||||
"site-packages",
|
||||
"venv",
|
||||
]
|
||||
|
||||
# Same as Black.
|
||||
line-length = 88
|
||||
indent-width = 4
|
||||
|
||||
# Assume Python 3.9
|
||||
target-version = "py311"
|
||||
|
||||
[lint]
|
||||
# Enable Pyflakes (`F`) and a subset of the pycodestyle (`E`) codes by default.
|
||||
# Unlike Flake8, Ruff doesn't enable pycodestyle warnings (`W`) or
|
||||
# McCabe complexity (`C901`) by default.
|
||||
select = ["E4", "E7", "E9", "F"]
|
||||
ignore = [
|
||||
'E402', # https://docs.astral.sh/ruff/rules/module-import-not-at-top-of-file/
|
||||
]
|
||||
|
||||
# Allow fix for all enabled rules (when `--fix`) is provided.
|
||||
fixable = ["ALL"]
|
||||
unfixable = []
|
||||
|
||||
# Allow unused variables when underscore-prefixed.
|
||||
# dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
|
||||
|
||||
[format]
|
||||
# Use single quotes in `ruff format`.
|
||||
quote-style = "single"
|
||||
|
||||
# Like Black, indent with spaces, rather than tabs.
|
||||
indent-style = "space"
|
||||
|
||||
# Like Black, respect magic trailing commas.
|
||||
skip-magic-trailing-comma = false
|
||||
|
||||
# Like Black, automatically detect the appropriate line ending.
|
||||
line-ending = "auto"
|
||||
|
||||
# Enable auto-formatting of code examples in docstrings. Markdown,
|
||||
# reStructuredText code/literal blocks and doctests are all supported.
|
||||
#
|
||||
# This is currently disabled by default, but it is planned for this
|
||||
# to be opt-out in the future.
|
||||
docstring-code-format = false
|
||||
|
||||
# Set the line length limit used when formatting code snippets in
|
||||
# docstrings.
|
||||
#
|
||||
# This only has an effect when the `docstring-code-format` setting is
|
||||
# enabled.
|
||||
docstring-code-line-length = "dynamic"
|
||||
|
|
@ -0,0 +1,59 @@
|
|||
#!/usr/bin/env python
|
||||
#
|
||||
# tractor: a trionic actor model built on `multiprocessing` and `trio`
|
||||
#
|
||||
# Copyright (C) 2018 Tyler Goodlet
|
||||
|
||||
# This program is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation, either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
from setuptools import setup
|
||||
|
||||
with open('README.rst', encoding='utf-8') as f:
|
||||
readme = f.read()
|
||||
|
||||
|
||||
setup(
|
||||
name="tractor",
|
||||
version='0.1.0.alpha0',
|
||||
description='A trionic actor model built on `multiprocessing` and `trio`',
|
||||
long_description=readme,
|
||||
license='GPLv3',
|
||||
author='Tyler Goodlet',
|
||||
maintainer='Tyler Goodlet',
|
||||
maintainer_email='tgoodlet@gmail.com',
|
||||
url='https://github.com/tgoodlet/tractor',
|
||||
platforms=['linux'],
|
||||
packages=[
|
||||
'tractor',
|
||||
],
|
||||
install_requires=['attrs', 'msgpack', 'trio', 'async_generator', 'colorlog'],
|
||||
tests_require=['pytest'],
|
||||
python_requires=">=3.6",
|
||||
keywords=[
|
||||
"async", "concurrency", "actor model", "distributed",
|
||||
'trio', 'multiprocessing'
|
||||
],
|
||||
classifiers=[
|
||||
'Development Status :: 3 - Alpha',
|
||||
'License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)'
|
||||
'Operating System :: POSIX :: Linux',
|
||||
"Framework :: Trio",
|
||||
"Programming Language :: Python :: Implementation :: CPython",
|
||||
"Programming Language :: Python :: Implementation :: PyPy",
|
||||
"Programming Language :: Python :: 3 :: Only",
|
||||
"Programming Language :: Python :: 3.6",
|
||||
"Intended Audience :: Science/Research",
|
||||
"Intended Audience :: Developers",
|
||||
"Topic :: System :: Distributed Computing",
|
||||
],
|
||||
)
|
||||
|
|
@ -1,227 +1,46 @@
|
|||
"""
|
||||
``tractor`` testing!!
|
||||
"""
|
||||
import sys
|
||||
import subprocess
|
||||
import os
|
||||
import random
|
||||
import signal
|
||||
import platform
|
||||
import time
|
||||
from functools import partial, wraps
|
||||
|
||||
import pytest
|
||||
import tractor
|
||||
from tractor._testing import (
|
||||
examples_dir as examples_dir,
|
||||
tractor_test as tractor_test,
|
||||
expect_ctxc as expect_ctxc,
|
||||
)
|
||||
|
||||
# TODO: include wtv plugin(s) we build in `._testing.pytest`?
|
||||
pytest_plugins = ['pytester']
|
||||
|
||||
# Sending signal.SIGINT on subprocess fails on windows. Use CTRL_* alternatives
|
||||
if platform.system() == 'Windows':
|
||||
_KILL_SIGNAL = signal.CTRL_BREAK_EVENT
|
||||
_INT_SIGNAL = signal.CTRL_C_EVENT
|
||||
_INT_RETURN_CODE = 3221225786
|
||||
_PROC_SPAWN_WAIT = 2
|
||||
else:
|
||||
_KILL_SIGNAL = signal.SIGKILL
|
||||
_INT_SIGNAL = signal.SIGINT
|
||||
_INT_RETURN_CODE = 1 if sys.version_info < (3, 8) else -signal.SIGINT.value
|
||||
_PROC_SPAWN_WAIT = 0.6 if sys.version_info < (3, 7) else 0.4
|
||||
|
||||
|
||||
no_windows = pytest.mark.skipif(
|
||||
platform.system() == "Windows",
|
||||
reason="Test is unsupported on windows",
|
||||
)
|
||||
_arb_addr = '127.0.0.1', random.randint(1000, 9999)
|
||||
|
||||
|
||||
def pytest_addoption(parser):
|
||||
parser.addoption(
|
||||
"--ll",
|
||||
action="store",
|
||||
dest='loglevel',
|
||||
default='ERROR', help="logging level to set when testing"
|
||||
)
|
||||
|
||||
parser.addoption(
|
||||
"--spawn-backend",
|
||||
action="store",
|
||||
dest='spawn_backend',
|
||||
default='trio',
|
||||
help="Processing spawning backend to use for test run",
|
||||
)
|
||||
|
||||
parser.addoption(
|
||||
"--tpdb", "--debug-mode",
|
||||
action="store_true",
|
||||
dest='tractor_debug_mode',
|
||||
# default=False,
|
||||
help=(
|
||||
'Enable a flag that can be used by tests to to set the '
|
||||
'`debug_mode: bool` for engaging the internal '
|
||||
'multi-proc debugger sys.'
|
||||
),
|
||||
)
|
||||
|
||||
|
||||
def pytest_configure(config):
|
||||
backend = config.option.spawn_backend
|
||||
tractor._spawn.try_set_start_method(backend)
|
||||
|
||||
|
||||
@pytest.fixture(scope='session')
|
||||
def debug_mode(request):
|
||||
debug_mode: bool = request.config.option.tractor_debug_mode
|
||||
# if debug_mode:
|
||||
# breakpoint()
|
||||
return debug_mode
|
||||
parser.addoption("--ll", action="store", dest='loglevel',
|
||||
default=None, help="logging level to set when testing")
|
||||
|
||||
|
||||
@pytest.fixture(scope='session', autouse=True)
|
||||
def loglevel(request):
|
||||
orig = tractor.log._default_loglevel
|
||||
level = tractor.log._default_loglevel = request.config.option.loglevel
|
||||
tractor.log.get_console_log(level)
|
||||
yield level
|
||||
tractor.log._default_loglevel = orig
|
||||
|
||||
|
||||
@pytest.fixture(scope='session')
|
||||
def spawn_backend(request) -> str:
|
||||
return request.config.option.spawn_backend
|
||||
def arb_addr():
|
||||
return _arb_addr
|
||||
|
||||
|
||||
# @pytest.fixture(scope='function', autouse=True)
|
||||
# def debug_enabled(request) -> str:
|
||||
# from tractor import _state
|
||||
# if _state._runtime_vars['_debug_mode']:
|
||||
# breakpoint()
|
||||
def tractor_test(fn):
|
||||
"""
|
||||
Use:
|
||||
|
||||
_ci_env: bool = os.environ.get('CI', False)
|
||||
@tractor_test
|
||||
async def test_whatever():
|
||||
await ...
|
||||
"""
|
||||
@wraps(fn)
|
||||
def wrapper(*args, **kwargs):
|
||||
# __tracebackhide__ = True
|
||||
return tractor.run(
|
||||
partial(fn, *args, **kwargs), arbiter_addr=_arb_addr)
|
||||
|
||||
|
||||
@pytest.fixture(scope='session')
|
||||
def ci_env() -> bool:
|
||||
'''
|
||||
Detect CI envoirment.
|
||||
|
||||
'''
|
||||
return _ci_env
|
||||
|
||||
|
||||
# TODO: also move this to `._testing` for now?
|
||||
# -[ ] possibly generalize and re-use for multi-tree spawning
|
||||
# along with the new stuff for multi-addrs in distribute_dis
|
||||
# branch?
|
||||
#
|
||||
# choose randomly at import time
|
||||
_reg_addr: tuple[str, int] = (
|
||||
'127.0.0.1',
|
||||
random.randint(1000, 9999),
|
||||
)
|
||||
|
||||
|
||||
@pytest.fixture(scope='session')
|
||||
def reg_addr() -> tuple[str, int]:
|
||||
|
||||
# globally override the runtime to the per-test-session-dynamic
|
||||
# addr so that all tests never conflict with any other actor
|
||||
# tree using the default.
|
||||
from tractor import _root
|
||||
_root._default_lo_addrs = [_reg_addr]
|
||||
|
||||
return _reg_addr
|
||||
|
||||
|
||||
def pytest_generate_tests(metafunc):
|
||||
spawn_backend = metafunc.config.option.spawn_backend
|
||||
|
||||
if not spawn_backend:
|
||||
# XXX some weird windows bug with `pytest`?
|
||||
spawn_backend = 'trio'
|
||||
|
||||
# TODO: maybe just use the literal `._spawn.SpawnMethodKey`?
|
||||
assert spawn_backend in (
|
||||
'mp_spawn',
|
||||
'mp_forkserver',
|
||||
'trio',
|
||||
)
|
||||
|
||||
# NOTE: used to be used to dyanmically parametrize tests for when
|
||||
# you just passed --spawn-backend=`mp` on the cli, but now we expect
|
||||
# that cli input to be manually specified, BUT, maybe we'll do
|
||||
# something like this again in the future?
|
||||
if 'start_method' in metafunc.fixturenames:
|
||||
metafunc.parametrize("start_method", [spawn_backend], scope='module')
|
||||
|
||||
|
||||
# TODO: a way to let test scripts (like from `examples/`)
|
||||
# guarantee they won't registry addr collide!
|
||||
# @pytest.fixture
|
||||
# def open_test_runtime(
|
||||
# reg_addr: tuple,
|
||||
# ) -> AsyncContextManager:
|
||||
# return partial(
|
||||
# tractor.open_nursery,
|
||||
# registry_addrs=[reg_addr],
|
||||
# )
|
||||
|
||||
|
||||
def sig_prog(proc, sig):
|
||||
"Kill the actor-process with ``sig``."
|
||||
proc.send_signal(sig)
|
||||
time.sleep(0.1)
|
||||
if not proc.poll():
|
||||
# TODO: why sometimes does SIGINT not work on teardown?
|
||||
# seems to happen only when trace logging enabled?
|
||||
proc.send_signal(_KILL_SIGNAL)
|
||||
ret = proc.wait()
|
||||
assert ret
|
||||
|
||||
|
||||
# TODO: factor into @cm and move to `._testing`?
|
||||
@pytest.fixture
|
||||
def daemon(
|
||||
loglevel: str,
|
||||
testdir,
|
||||
reg_addr: tuple[str, int],
|
||||
):
|
||||
'''
|
||||
Run a daemon root actor as a separate actor-process tree and
|
||||
"remote registrar" for discovery-protocol related tests.
|
||||
|
||||
'''
|
||||
if loglevel in ('trace', 'debug'):
|
||||
# XXX: too much logging will lock up the subproc (smh)
|
||||
loglevel: str = 'info'
|
||||
|
||||
code: str = (
|
||||
"import tractor; "
|
||||
"tractor.run_daemon([], registry_addrs={reg_addrs}, loglevel={ll})"
|
||||
).format(
|
||||
reg_addrs=str([reg_addr]),
|
||||
ll="'{}'".format(loglevel) if loglevel else None,
|
||||
)
|
||||
cmd: list[str] = [
|
||||
sys.executable,
|
||||
'-c', code,
|
||||
]
|
||||
kwargs = {}
|
||||
if platform.system() == 'Windows':
|
||||
# without this, tests hang on windows forever
|
||||
kwargs['creationflags'] = subprocess.CREATE_NEW_PROCESS_GROUP
|
||||
|
||||
proc = testdir.popen(
|
||||
cmd,
|
||||
stdout=subprocess.PIPE,
|
||||
stderr=subprocess.PIPE,
|
||||
**kwargs,
|
||||
)
|
||||
assert not proc.returncode
|
||||
time.sleep(_PROC_SPAWN_WAIT)
|
||||
yield proc
|
||||
sig_prog(proc, _INT_SIGNAL)
|
||||
return wrapper
|
||||
|
|
|
|||
|
|
@ -1,243 +0,0 @@
|
|||
'''
|
||||
`tractor.devx.*` tooling sub-pkg test space.
|
||||
|
||||
'''
|
||||
import time
|
||||
from typing import (
|
||||
Callable,
|
||||
)
|
||||
|
||||
import pytest
|
||||
from pexpect.exceptions import (
|
||||
TIMEOUT,
|
||||
)
|
||||
from pexpect.spawnbase import SpawnBase
|
||||
|
||||
from tractor._testing import (
|
||||
mk_cmd,
|
||||
)
|
||||
from tractor.devx._debug import (
|
||||
_pause_msg as _pause_msg,
|
||||
_crash_msg as _crash_msg,
|
||||
_repl_fail_msg as _repl_fail_msg,
|
||||
_ctlc_ignore_header as _ctlc_ignore_header,
|
||||
)
|
||||
from ..conftest import (
|
||||
_ci_env,
|
||||
)
|
||||
|
||||
|
||||
@pytest.fixture
|
||||
def spawn(
|
||||
start_method,
|
||||
testdir: pytest.Pytester,
|
||||
reg_addr: tuple[str, int],
|
||||
|
||||
) -> Callable[[str], None]:
|
||||
'''
|
||||
Use the `pexpect` module shipped via `testdir.spawn()` to
|
||||
run an `./examples/..` script by name.
|
||||
|
||||
'''
|
||||
if start_method != 'trio':
|
||||
pytest.skip(
|
||||
'`pexpect` based tests only supported on `trio` backend'
|
||||
)
|
||||
|
||||
def unset_colors():
|
||||
'''
|
||||
Python 3.13 introduced colored tracebacks that break patt
|
||||
matching,
|
||||
|
||||
https://docs.python.org/3/using/cmdline.html#envvar-PYTHON_COLORS
|
||||
https://docs.python.org/3/using/cmdline.html#using-on-controlling-color
|
||||
|
||||
'''
|
||||
import os
|
||||
os.environ['PYTHON_COLORS'] = '0'
|
||||
|
||||
def _spawn(
|
||||
cmd: str,
|
||||
**mkcmd_kwargs,
|
||||
):
|
||||
unset_colors()
|
||||
return testdir.spawn(
|
||||
cmd=mk_cmd(
|
||||
cmd,
|
||||
**mkcmd_kwargs,
|
||||
),
|
||||
expect_timeout=3,
|
||||
# preexec_fn=unset_colors,
|
||||
# ^TODO? get `pytest` core to expose underlying
|
||||
# `pexpect.spawn()` stuff?
|
||||
)
|
||||
|
||||
# such that test-dep can pass input script name.
|
||||
return _spawn
|
||||
|
||||
|
||||
@pytest.fixture(
|
||||
params=[False, True],
|
||||
ids='ctl-c={}'.format,
|
||||
)
|
||||
def ctlc(
|
||||
request,
|
||||
ci_env: bool,
|
||||
|
||||
) -> bool:
|
||||
|
||||
use_ctlc = request.param
|
||||
|
||||
node = request.node
|
||||
markers = node.own_markers
|
||||
for mark in markers:
|
||||
if mark.name == 'has_nested_actors':
|
||||
pytest.skip(
|
||||
f'Test {node} has nested actors and fails with Ctrl-C.\n'
|
||||
f'The test can sometimes run fine locally but until'
|
||||
' we solve' 'this issue this CI test will be xfail:\n'
|
||||
'https://github.com/goodboy/tractor/issues/320'
|
||||
)
|
||||
|
||||
if mark.name == 'ctlcs_bish':
|
||||
pytest.skip(
|
||||
f'Test {node} prolly uses something from the stdlib (namely `asyncio`..)\n'
|
||||
f'The test and/or underlying example script can *sometimes* run fine '
|
||||
f'locally but more then likely until the cpython peeps get their sh#$ together, '
|
||||
f'this test will definitely not behave like `trio` under SIGINT..\n'
|
||||
)
|
||||
|
||||
if use_ctlc:
|
||||
# XXX: disable pygments highlighting for auto-tests
|
||||
# since some envs (like actions CI) will struggle
|
||||
# the the added color-char encoding..
|
||||
from tractor.devx._debug import TractorConfig
|
||||
TractorConfig.use_pygements = False
|
||||
|
||||
yield use_ctlc
|
||||
|
||||
|
||||
def expect(
|
||||
child,
|
||||
|
||||
# normally a `pdb` prompt by default
|
||||
patt: str,
|
||||
|
||||
**kwargs,
|
||||
|
||||
) -> None:
|
||||
'''
|
||||
Expect wrapper that prints last seen console
|
||||
data before failing.
|
||||
|
||||
'''
|
||||
try:
|
||||
child.expect(
|
||||
patt,
|
||||
**kwargs,
|
||||
)
|
||||
except TIMEOUT:
|
||||
before = str(child.before.decode())
|
||||
print(before)
|
||||
raise
|
||||
|
||||
|
||||
PROMPT = r"\(Pdb\+\)"
|
||||
|
||||
|
||||
def in_prompt_msg(
|
||||
child: SpawnBase,
|
||||
parts: list[str],
|
||||
|
||||
pause_on_false: bool = False,
|
||||
err_on_false: bool = False,
|
||||
print_prompt_on_false: bool = True,
|
||||
|
||||
) -> bool:
|
||||
'''
|
||||
Predicate check if (the prompt's) std-streams output has all
|
||||
`str`-parts in it.
|
||||
|
||||
Can be used in test asserts for bulk matching expected
|
||||
log/REPL output for a given `pdb` interact point.
|
||||
|
||||
'''
|
||||
__tracebackhide__: bool = False
|
||||
|
||||
before: str = str(child.before.decode())
|
||||
for part in parts:
|
||||
if part not in before:
|
||||
if pause_on_false:
|
||||
import pdbp
|
||||
pdbp.set_trace()
|
||||
|
||||
if print_prompt_on_false:
|
||||
print(before)
|
||||
|
||||
if err_on_false:
|
||||
raise ValueError(
|
||||
f'Could not find pattern in `before` output?\n'
|
||||
f'part: {part!r}\n'
|
||||
)
|
||||
return False
|
||||
|
||||
return True
|
||||
|
||||
|
||||
# TODO: todo support terminal color-chars stripping so we can match
|
||||
# against call stack frame output from the the 'll' command the like!
|
||||
# -[ ] SO answer for stipping ANSI codes: https://stackoverflow.com/a/14693789
|
||||
def assert_before(
|
||||
child: SpawnBase,
|
||||
patts: list[str],
|
||||
|
||||
**kwargs,
|
||||
|
||||
) -> None:
|
||||
__tracebackhide__: bool = False
|
||||
|
||||
assert in_prompt_msg(
|
||||
child=child,
|
||||
parts=patts,
|
||||
|
||||
# since this is an "assert" helper ;)
|
||||
err_on_false=True,
|
||||
**kwargs
|
||||
)
|
||||
|
||||
|
||||
def do_ctlc(
|
||||
child,
|
||||
count: int = 3,
|
||||
delay: float = 0.1,
|
||||
patt: str|None = None,
|
||||
|
||||
# expect repl UX to reprint the prompt after every
|
||||
# ctrl-c send.
|
||||
# XXX: no idea but, in CI this never seems to work even on 3.10 so
|
||||
# needs some further investigation potentially...
|
||||
expect_prompt: bool = not _ci_env,
|
||||
|
||||
) -> str|None:
|
||||
|
||||
before: str|None = None
|
||||
|
||||
# make sure ctl-c sends don't do anything but repeat output
|
||||
for _ in range(count):
|
||||
time.sleep(delay)
|
||||
child.sendcontrol('c')
|
||||
|
||||
# TODO: figure out why this makes CI fail..
|
||||
# if you run this test manually it works just fine..
|
||||
if expect_prompt:
|
||||
time.sleep(delay)
|
||||
child.expect(PROMPT)
|
||||
before = str(child.before.decode())
|
||||
time.sleep(delay)
|
||||
|
||||
if patt:
|
||||
# should see the last line on console
|
||||
assert patt in before
|
||||
|
||||
# return the console content up to the final prompt
|
||||
return before
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -1,381 +0,0 @@
|
|||
'''
|
||||
That "foreign loop/thread" debug REPL support better ALSO WORK!
|
||||
|
||||
Same as `test_native_pause.py`.
|
||||
All these tests can be understood (somewhat) by running the
|
||||
equivalent `examples/debugging/` scripts manually.
|
||||
|
||||
'''
|
||||
from contextlib import (
|
||||
contextmanager as cm,
|
||||
)
|
||||
# from functools import partial
|
||||
# import itertools
|
||||
import time
|
||||
# from typing import (
|
||||
# Iterator,
|
||||
# )
|
||||
|
||||
import pytest
|
||||
from pexpect.exceptions import (
|
||||
TIMEOUT,
|
||||
EOF,
|
||||
)
|
||||
|
||||
from .conftest import (
|
||||
# _ci_env,
|
||||
do_ctlc,
|
||||
PROMPT,
|
||||
# expect,
|
||||
in_prompt_msg,
|
||||
assert_before,
|
||||
_pause_msg,
|
||||
_crash_msg,
|
||||
_ctlc_ignore_header,
|
||||
# _repl_fail_msg,
|
||||
)
|
||||
|
||||
@cm
|
||||
def maybe_expect_timeout(
|
||||
ctlc: bool = False,
|
||||
) -> None:
|
||||
try:
|
||||
yield
|
||||
except TIMEOUT:
|
||||
# breakpoint()
|
||||
if ctlc:
|
||||
pytest.xfail(
|
||||
'Some kinda redic threading SIGINT bug i think?\n'
|
||||
'See the notes in `examples/debugging/sync_bp.py`..\n'
|
||||
)
|
||||
raise
|
||||
|
||||
|
||||
@pytest.mark.ctlcs_bish
|
||||
def test_pause_from_sync(
|
||||
spawn,
|
||||
ctlc: bool,
|
||||
):
|
||||
'''
|
||||
Verify we can use the `pdbp` REPL from sync functions AND from
|
||||
any thread spawned with `trio.to_thread.run_sync()`.
|
||||
|
||||
`examples/debugging/sync_bp.py`
|
||||
|
||||
'''
|
||||
child = spawn('sync_bp')
|
||||
|
||||
# first `sync_pause()` after nurseries open
|
||||
child.expect(PROMPT)
|
||||
assert_before(
|
||||
child,
|
||||
[
|
||||
# pre-prompt line
|
||||
_pause_msg,
|
||||
"<Task '__main__.main'",
|
||||
"('root'",
|
||||
]
|
||||
)
|
||||
if ctlc:
|
||||
do_ctlc(child)
|
||||
# ^NOTE^ subactor not spawned yet; don't need extra delay.
|
||||
|
||||
child.sendline('c')
|
||||
|
||||
# first `await tractor.pause()` inside `p.open_context()` body
|
||||
child.expect(PROMPT)
|
||||
|
||||
# XXX shouldn't see gb loaded message with PDB loglevel!
|
||||
# assert not in_prompt_msg(
|
||||
# child,
|
||||
# ['`greenback` portal opened!'],
|
||||
# )
|
||||
# should be same root task
|
||||
assert_before(
|
||||
child,
|
||||
[
|
||||
_pause_msg,
|
||||
"<Task '__main__.main'",
|
||||
"('root'",
|
||||
]
|
||||
)
|
||||
|
||||
if ctlc:
|
||||
do_ctlc(
|
||||
child,
|
||||
# NOTE: setting this to 0 (or some other sufficient
|
||||
# small val) can cause the test to fail since the
|
||||
# `subactor` suffers a race where the root/parent
|
||||
# sends an actor-cancel prior to it hitting its pause
|
||||
# point; by def the value is 0.1
|
||||
delay=0.4,
|
||||
)
|
||||
|
||||
# XXX, fwiw without a brief sleep here the SIGINT might actually
|
||||
# trigger "subactor" cancellation by its parent before the
|
||||
# shield-handler is engaged.
|
||||
#
|
||||
# => similar to the `delay` input to `do_ctlc()` below, setting
|
||||
# this too low can cause the test to fail since the `subactor`
|
||||
# suffers a race where the root/parent sends an actor-cancel
|
||||
# prior to the context task hitting its pause point (and thus
|
||||
# engaging the `sigint_shield()` handler in time); this value
|
||||
# seems be good enuf?
|
||||
time.sleep(0.6)
|
||||
|
||||
# one of the bg thread or subactor should have
|
||||
# `Lock.acquire()`-ed
|
||||
# (NOT both, which will result in REPL clobbering!)
|
||||
attach_patts: dict[str, list[str]] = {
|
||||
'subactor': [
|
||||
"'start_n_sync_pause'",
|
||||
"('subactor'",
|
||||
],
|
||||
'inline_root_bg_thread': [
|
||||
"<Thread(inline_root_bg_thread",
|
||||
"('root'",
|
||||
],
|
||||
'start_soon_root_bg_thread': [
|
||||
"<Thread(start_soon_root_bg_thread",
|
||||
"('root'",
|
||||
],
|
||||
}
|
||||
conts: int = 0 # for debugging below matching logic on failure
|
||||
while attach_patts:
|
||||
child.sendline('c')
|
||||
conts += 1
|
||||
child.expect(PROMPT)
|
||||
before = str(child.before.decode())
|
||||
for key in attach_patts:
|
||||
if key in before:
|
||||
attach_key: str = key
|
||||
expected_patts: str = attach_patts.pop(key)
|
||||
assert_before(
|
||||
child,
|
||||
[_pause_msg]
|
||||
+
|
||||
expected_patts
|
||||
)
|
||||
break
|
||||
else:
|
||||
pytest.fail(
|
||||
f'No keys found?\n\n'
|
||||
f'{attach_patts.keys()}\n\n'
|
||||
f'{before}\n'
|
||||
)
|
||||
|
||||
# ensure no other task/threads engaged a REPL
|
||||
# at the same time as the one that was detected above.
|
||||
for key, other_patts in attach_patts.copy().items():
|
||||
assert not in_prompt_msg(
|
||||
child,
|
||||
other_patts,
|
||||
)
|
||||
|
||||
if ctlc:
|
||||
do_ctlc(
|
||||
child,
|
||||
patt=attach_key,
|
||||
# NOTE same as comment above
|
||||
delay=0.4,
|
||||
)
|
||||
|
||||
child.sendline('c')
|
||||
|
||||
# XXX TODO, weird threading bug it seems despite the
|
||||
# `abandon_on_cancel: bool` setting to
|
||||
# `trio.to_thread.run_sync()`..
|
||||
with maybe_expect_timeout(
|
||||
ctlc=ctlc,
|
||||
):
|
||||
child.expect(EOF)
|
||||
|
||||
|
||||
def expect_any_of(
|
||||
attach_patts: dict[str, list[str]],
|
||||
child, # what type?
|
||||
ctlc: bool = False,
|
||||
prompt: str = _ctlc_ignore_header,
|
||||
ctlc_delay: float = .4,
|
||||
|
||||
) -> list[str]:
|
||||
'''
|
||||
Receive any of a `list[str]` of patterns provided in
|
||||
`attach_patts`.
|
||||
|
||||
Used to test racing prompts from multiple actors and/or
|
||||
tasks using a common root process' `pdbp` REPL.
|
||||
|
||||
'''
|
||||
assert attach_patts
|
||||
|
||||
child.expect(PROMPT)
|
||||
before = str(child.before.decode())
|
||||
|
||||
for attach_key in attach_patts:
|
||||
if attach_key in before:
|
||||
expected_patts: str = attach_patts.pop(attach_key)
|
||||
assert_before(
|
||||
child,
|
||||
expected_patts
|
||||
)
|
||||
break # from for
|
||||
else:
|
||||
pytest.fail(
|
||||
f'No keys found?\n\n'
|
||||
f'{attach_patts.keys()}\n\n'
|
||||
f'{before}\n'
|
||||
)
|
||||
|
||||
# ensure no other task/threads engaged a REPL
|
||||
# at the same time as the one that was detected above.
|
||||
for key, other_patts in attach_patts.copy().items():
|
||||
assert not in_prompt_msg(
|
||||
child,
|
||||
other_patts,
|
||||
)
|
||||
|
||||
if ctlc:
|
||||
do_ctlc(
|
||||
child,
|
||||
patt=prompt,
|
||||
# NOTE same as comment above
|
||||
delay=ctlc_delay,
|
||||
)
|
||||
|
||||
return expected_patts
|
||||
|
||||
|
||||
@pytest.mark.ctlcs_bish
|
||||
def test_sync_pause_from_aio_task(
|
||||
spawn,
|
||||
|
||||
ctlc: bool
|
||||
# ^TODO, fix for `asyncio`!!
|
||||
):
|
||||
'''
|
||||
Verify we can use the `pdbp` REPL from an `asyncio.Task` spawned using
|
||||
APIs in `.to_asyncio`.
|
||||
|
||||
`examples/debugging/asycio_bp.py`
|
||||
|
||||
'''
|
||||
child = spawn('asyncio_bp')
|
||||
|
||||
# RACE on whether trio/asyncio task bps first
|
||||
attach_patts: dict[str, list[str]] = {
|
||||
|
||||
# first pause in guest-mode (aka "infecting")
|
||||
# `trio.Task`.
|
||||
'trio-side': [
|
||||
_pause_msg,
|
||||
"<Task 'trio_ctx'",
|
||||
"('aio_daemon'",
|
||||
],
|
||||
|
||||
# `breakpoint()` from `asyncio.Task`.
|
||||
'asyncio-side': [
|
||||
_pause_msg,
|
||||
"<Task pending name='Task-2' coro=<greenback_shim()",
|
||||
"('aio_daemon'",
|
||||
],
|
||||
}
|
||||
|
||||
while attach_patts:
|
||||
expect_any_of(
|
||||
attach_patts=attach_patts,
|
||||
child=child,
|
||||
ctlc=ctlc,
|
||||
)
|
||||
child.sendline('c')
|
||||
|
||||
# NOW in race order,
|
||||
# - the asyncio-task will error
|
||||
# - the root-actor parent task will pause
|
||||
#
|
||||
attach_patts: dict[str, list[str]] = {
|
||||
|
||||
# error raised in `asyncio.Task`
|
||||
"raise ValueError('asyncio side error!')": [
|
||||
_crash_msg,
|
||||
"<Task 'trio_ctx'",
|
||||
"@ ('aio_daemon'",
|
||||
"ValueError: asyncio side error!",
|
||||
|
||||
# XXX, we no longer show this frame by default!
|
||||
# 'return await chan.receive()', # `.to_asyncio` impl internals in tb
|
||||
],
|
||||
|
||||
# parent-side propagation via actor-nursery/portal
|
||||
# "tractor._exceptions.RemoteActorError: remote task raised a 'ValueError'": [
|
||||
"remote task raised a 'ValueError'": [
|
||||
_crash_msg,
|
||||
"src_uid=('aio_daemon'",
|
||||
"('aio_daemon'",
|
||||
],
|
||||
|
||||
# a final pause in root-actor
|
||||
"<Task '__main__.main'": [
|
||||
_pause_msg,
|
||||
"<Task '__main__.main'",
|
||||
"('root'",
|
||||
],
|
||||
}
|
||||
while attach_patts:
|
||||
expect_any_of(
|
||||
attach_patts=attach_patts,
|
||||
child=child,
|
||||
ctlc=ctlc,
|
||||
)
|
||||
child.sendline('c')
|
||||
|
||||
assert not attach_patts
|
||||
|
||||
# final boxed error propagates to root
|
||||
assert_before(
|
||||
child,
|
||||
[
|
||||
_crash_msg,
|
||||
"<Task '__main__.main'",
|
||||
"('root'",
|
||||
"remote task raised a 'ValueError'",
|
||||
"ValueError: asyncio side error!",
|
||||
]
|
||||
)
|
||||
|
||||
if ctlc:
|
||||
do_ctlc(
|
||||
child,
|
||||
# NOTE: setting this to 0 (or some other sufficient
|
||||
# small val) can cause the test to fail since the
|
||||
# `subactor` suffers a race where the root/parent
|
||||
# sends an actor-cancel prior to it hitting its pause
|
||||
# point; by def the value is 0.1
|
||||
delay=0.4,
|
||||
)
|
||||
|
||||
child.sendline('c')
|
||||
# with maybe_expect_timeout():
|
||||
child.expect(EOF)
|
||||
|
||||
|
||||
def test_sync_pause_from_non_greenbacked_aio_task():
|
||||
'''
|
||||
Where the `breakpoint()` caller task is NOT spawned by
|
||||
`tractor.to_asyncio` and thus never activates
|
||||
a `greenback.ensure_portal()` beforehand, presumably bc the task
|
||||
was started by some lib/dep as in often seen in the field.
|
||||
|
||||
Ensure sync pausing works when the pause is in,
|
||||
|
||||
- the root actor running in infected-mode?
|
||||
|_ since we don't need any IPC to acquire the debug lock?
|
||||
|_ is there some way to handle this like the non-main-thread case?
|
||||
|
||||
All other cases need to error out appropriately right?
|
||||
|
||||
- for any subactor we can't avoid needing the repl lock..
|
||||
|_ is there a way to hook into `asyncio.ensure_future(obj)`?
|
||||
|
||||
'''
|
||||
pass
|
||||
|
|
@ -1,172 +0,0 @@
|
|||
'''
|
||||
That "native" runtime-hackin toolset better be dang useful!
|
||||
|
||||
Verify the funtion of a variety of "developer-experience" tools we
|
||||
offer from the `.devx` sub-pkg:
|
||||
|
||||
- use of the lovely `stackscope` for dumping actor `trio`-task trees
|
||||
during operation and hangs.
|
||||
|
||||
TODO:
|
||||
- demonstration of `CallerInfo` call stack frame filtering such that
|
||||
for logging and REPL purposes a user sees exactly the layers needed
|
||||
when debugging a problem inside the stack vs. in their app.
|
||||
|
||||
'''
|
||||
import os
|
||||
import signal
|
||||
import time
|
||||
|
||||
from .conftest import (
|
||||
expect,
|
||||
assert_before,
|
||||
in_prompt_msg,
|
||||
PROMPT,
|
||||
_pause_msg,
|
||||
)
|
||||
from pexpect.exceptions import (
|
||||
# TIMEOUT,
|
||||
EOF,
|
||||
)
|
||||
|
||||
|
||||
def test_shield_pause(
|
||||
spawn,
|
||||
):
|
||||
'''
|
||||
Verify the `tractor.pause()/.post_mortem()` API works inside an
|
||||
already cancelled `trio.CancelScope` and that you can step to the
|
||||
next checkpoint wherein the cancelled will get raised.
|
||||
|
||||
'''
|
||||
child = spawn(
|
||||
'shield_hang_in_sub'
|
||||
)
|
||||
expect(
|
||||
child,
|
||||
'Yo my child hanging..?',
|
||||
)
|
||||
assert_before(
|
||||
child,
|
||||
[
|
||||
'Entering shield sleep..',
|
||||
'Enabling trace-trees on `SIGUSR1` since `stackscope` is installed @',
|
||||
]
|
||||
)
|
||||
|
||||
script_pid: int = child.pid
|
||||
print(
|
||||
f'Sending SIGUSR1 to {script_pid}\n'
|
||||
f'(kill -s SIGUSR1 {script_pid})\n'
|
||||
)
|
||||
os.kill(
|
||||
script_pid,
|
||||
signal.SIGUSR1,
|
||||
)
|
||||
time.sleep(0.2)
|
||||
expect(
|
||||
child,
|
||||
# end-of-tree delimiter
|
||||
"end-of-\('root'",
|
||||
)
|
||||
assert_before(
|
||||
child,
|
||||
[
|
||||
# 'Srying to dump `stackscope` tree..',
|
||||
# 'Dumping `stackscope` tree for actor',
|
||||
"('root'", # uid line
|
||||
|
||||
# TODO!? this used to show?
|
||||
# -[ ] mk reproducable for @oremanj?
|
||||
#
|
||||
# parent block point (non-shielded)
|
||||
# 'await trio.sleep_forever() # in root',
|
||||
]
|
||||
)
|
||||
expect(
|
||||
child,
|
||||
# end-of-tree delimiter
|
||||
"end-of-\('hanger'",
|
||||
)
|
||||
assert_before(
|
||||
child,
|
||||
[
|
||||
# relay to the sub should be reported
|
||||
'Relaying `SIGUSR1`[10] to sub-actor',
|
||||
|
||||
"('hanger'", # uid line
|
||||
|
||||
# TODO!? SEE ABOVE
|
||||
# hanger LOC where it's shield-halted
|
||||
# 'await trio.sleep_forever() # in subactor',
|
||||
]
|
||||
)
|
||||
|
||||
# simulate the user sending a ctl-c to the hanging program.
|
||||
# this should result in the terminator kicking in since
|
||||
# the sub is shield blocking and can't respond to SIGINT.
|
||||
os.kill(
|
||||
child.pid,
|
||||
signal.SIGINT,
|
||||
)
|
||||
expect(
|
||||
child,
|
||||
'Shutting down actor runtime',
|
||||
timeout=6,
|
||||
)
|
||||
assert_before(
|
||||
child,
|
||||
[
|
||||
'raise KeyboardInterrupt',
|
||||
# 'Shutting down actor runtime',
|
||||
'#T-800 deployed to collect zombie B0',
|
||||
"'--uid', \"('hanger',",
|
||||
]
|
||||
)
|
||||
|
||||
|
||||
def test_breakpoint_hook_restored(
|
||||
spawn,
|
||||
):
|
||||
'''
|
||||
Ensures our actor runtime sets a custom `breakpoint()` hook
|
||||
on open then restores the stdlib's default on close.
|
||||
|
||||
The hook state validation is done via `assert`s inside the
|
||||
invoked script with only `breakpoint()` (not `tractor.pause()`)
|
||||
calls used.
|
||||
|
||||
'''
|
||||
child = spawn('restore_builtin_breakpoint')
|
||||
|
||||
child.expect(PROMPT)
|
||||
assert_before(
|
||||
child,
|
||||
[
|
||||
_pause_msg,
|
||||
"<Task '__main__.main'",
|
||||
"('root'",
|
||||
"first bp, tractor hook set",
|
||||
]
|
||||
)
|
||||
child.sendline('c')
|
||||
child.expect(PROMPT)
|
||||
assert_before(
|
||||
child,
|
||||
[
|
||||
"last bp, stdlib hook restored",
|
||||
]
|
||||
)
|
||||
|
||||
# since the stdlib hook was already restored there should be NO
|
||||
# `tractor` `log.pdb()` content from console!
|
||||
assert not in_prompt_msg(
|
||||
child,
|
||||
[
|
||||
_pause_msg,
|
||||
"<Task '__main__.main'",
|
||||
"('root'",
|
||||
],
|
||||
)
|
||||
child.sendline('c')
|
||||
child.expect(EOF)
|
||||
|
|
@ -1,129 +0,0 @@
|
|||
"""
|
||||
Bidirectional streaming.
|
||||
|
||||
"""
|
||||
import pytest
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def simple_rpc(
|
||||
|
||||
ctx: tractor.Context,
|
||||
data: int,
|
||||
|
||||
) -> None:
|
||||
'''
|
||||
Test a small ping-pong server.
|
||||
|
||||
'''
|
||||
# signal to parent that we're up
|
||||
await ctx.started(data + 1)
|
||||
|
||||
print('opening stream in callee')
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
count = 0
|
||||
while True:
|
||||
try:
|
||||
await stream.receive() == 'ping'
|
||||
except trio.EndOfChannel:
|
||||
assert count == 10
|
||||
break
|
||||
else:
|
||||
print('pong')
|
||||
await stream.send('pong')
|
||||
count += 1
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def simple_rpc_with_forloop(
|
||||
|
||||
ctx: tractor.Context,
|
||||
data: int,
|
||||
|
||||
) -> None:
|
||||
"""Same as previous test but using ``async for`` syntax/api.
|
||||
|
||||
"""
|
||||
|
||||
# signal to parent that we're up
|
||||
await ctx.started(data + 1)
|
||||
|
||||
print('opening stream in callee')
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
count = 0
|
||||
async for msg in stream:
|
||||
|
||||
assert msg == 'ping'
|
||||
print('pong')
|
||||
await stream.send('pong')
|
||||
count += 1
|
||||
|
||||
else:
|
||||
assert count == 10
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'use_async_for',
|
||||
[True, False],
|
||||
)
|
||||
@pytest.mark.parametrize(
|
||||
'server_func',
|
||||
[simple_rpc, simple_rpc_with_forloop],
|
||||
)
|
||||
def test_simple_rpc(server_func, use_async_for):
|
||||
'''
|
||||
The simplest request response pattern.
|
||||
|
||||
'''
|
||||
async def main():
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.start_actor(
|
||||
'rpc_server',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
async with portal.open_context(
|
||||
server_func, # taken from pytest parameterization
|
||||
data=10,
|
||||
) as (ctx, sent):
|
||||
|
||||
assert sent == 11
|
||||
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
if use_async_for:
|
||||
|
||||
count = 0
|
||||
# receive msgs using async for style
|
||||
print('ping')
|
||||
await stream.send('ping')
|
||||
|
||||
async for msg in stream:
|
||||
assert msg == 'pong'
|
||||
print('ping')
|
||||
await stream.send('ping')
|
||||
count += 1
|
||||
|
||||
if count >= 9:
|
||||
break
|
||||
|
||||
else:
|
||||
# classic send/receive style
|
||||
for _ in range(10):
|
||||
|
||||
print('ping')
|
||||
await stream.send('ping')
|
||||
assert await stream.receive() == 'pong'
|
||||
|
||||
# stream should terminate here
|
||||
|
||||
# final context result(s) should be consumed here in __aexit__()
|
||||
|
||||
await portal.cancel_actor()
|
||||
|
||||
trio.run(main)
|
||||
|
|
@ -1,290 +0,0 @@
|
|||
'''
|
||||
Sketchy network blackoutz, ugly byzantine gens, puedes eschuchar la
|
||||
cancelacion?..
|
||||
|
||||
'''
|
||||
from functools import partial
|
||||
from types import ModuleType
|
||||
|
||||
import pytest
|
||||
from _pytest.pathlib import import_path
|
||||
import trio
|
||||
import tractor
|
||||
from tractor._testing import (
|
||||
examples_dir,
|
||||
break_ipc,
|
||||
)
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'pre_aclose_msgstream',
|
||||
[
|
||||
False,
|
||||
True,
|
||||
],
|
||||
ids=[
|
||||
'no_msgstream_aclose',
|
||||
'pre_aclose_msgstream',
|
||||
],
|
||||
)
|
||||
@pytest.mark.parametrize(
|
||||
'ipc_break',
|
||||
[
|
||||
# no breaks
|
||||
{
|
||||
'break_parent_ipc_after': False,
|
||||
'break_child_ipc_after': False,
|
||||
},
|
||||
|
||||
# only parent breaks
|
||||
{
|
||||
'break_parent_ipc_after': 500,
|
||||
'break_child_ipc_after': False,
|
||||
},
|
||||
|
||||
# only child breaks
|
||||
{
|
||||
'break_parent_ipc_after': False,
|
||||
'break_child_ipc_after': 500,
|
||||
},
|
||||
|
||||
# both: break parent first
|
||||
{
|
||||
'break_parent_ipc_after': 500,
|
||||
'break_child_ipc_after': 800,
|
||||
},
|
||||
# both: break child first
|
||||
{
|
||||
'break_parent_ipc_after': 800,
|
||||
'break_child_ipc_after': 500,
|
||||
},
|
||||
|
||||
],
|
||||
ids=[
|
||||
'no_break',
|
||||
'break_parent',
|
||||
'break_child',
|
||||
'break_both_parent_first',
|
||||
'break_both_child_first',
|
||||
],
|
||||
)
|
||||
def test_ipc_channel_break_during_stream(
|
||||
debug_mode: bool,
|
||||
loglevel: str,
|
||||
spawn_backend: str,
|
||||
ipc_break: dict|None,
|
||||
pre_aclose_msgstream: bool,
|
||||
):
|
||||
'''
|
||||
Ensure we can have an IPC channel break its connection during
|
||||
streaming and it's still possible for the (simulated) user to kill
|
||||
the actor tree using SIGINT.
|
||||
|
||||
We also verify the type of connection error expected in the parent
|
||||
depending on which side if the IPC breaks first.
|
||||
|
||||
'''
|
||||
if spawn_backend != 'trio':
|
||||
if debug_mode:
|
||||
pytest.skip('`debug_mode` only supported on `trio` spawner')
|
||||
|
||||
# non-`trio` spawners should never hit the hang condition that
|
||||
# requires the user to do ctl-c to cancel the actor tree.
|
||||
# expect_final_exc = trio.ClosedResourceError
|
||||
expect_final_exc = tractor.TransportClosed
|
||||
|
||||
mod: ModuleType = import_path(
|
||||
examples_dir() / 'advanced_faults'
|
||||
/ 'ipc_failure_during_stream.py',
|
||||
root=examples_dir(),
|
||||
consider_namespace_packages=False,
|
||||
)
|
||||
|
||||
# by def we expect KBI from user after a simulated "hang
|
||||
# period" wherein the user eventually hits ctl-c to kill the
|
||||
# root-actor tree.
|
||||
expect_final_exc: BaseException = KeyboardInterrupt
|
||||
if (
|
||||
# only expect EoC if trans is broken on the child side,
|
||||
ipc_break['break_child_ipc_after'] is not False
|
||||
# AND we tell the child to call `MsgStream.aclose()`.
|
||||
and pre_aclose_msgstream
|
||||
):
|
||||
# expect_final_exc = trio.EndOfChannel
|
||||
# ^XXX NOPE! XXX^ since now `.open_stream()` absorbs this
|
||||
# gracefully!
|
||||
expect_final_exc = KeyboardInterrupt
|
||||
|
||||
# NOTE when ONLY the child breaks or it breaks BEFORE the
|
||||
# parent we expect the parent to get a closed resource error
|
||||
# on the next `MsgStream.receive()` and then fail out and
|
||||
# cancel the child from there.
|
||||
#
|
||||
# ONLY CHILD breaks
|
||||
if (
|
||||
ipc_break['break_child_ipc_after']
|
||||
and
|
||||
ipc_break['break_parent_ipc_after'] is False
|
||||
):
|
||||
# NOTE: we DO NOT expect this any more since
|
||||
# the child side's channel will be broken silently
|
||||
# and nothing on the parent side will indicate this!
|
||||
# expect_final_exc = trio.ClosedResourceError
|
||||
|
||||
# NOTE: child will send a 'stop' msg before it breaks
|
||||
# the transport channel BUT, that will be absorbed by the
|
||||
# `ctx.open_stream()` block and thus the `.open_context()`
|
||||
# should hang, after which the test script simulates
|
||||
# a user sending ctl-c by raising a KBI.
|
||||
if pre_aclose_msgstream:
|
||||
expect_final_exc = KeyboardInterrupt
|
||||
|
||||
# XXX OLD XXX
|
||||
# if child calls `MsgStream.aclose()` then expect EoC.
|
||||
# ^ XXX not any more ^ since eoc is always absorbed
|
||||
# gracefully and NOT bubbled to the `.open_context()`
|
||||
# block!
|
||||
# expect_final_exc = trio.EndOfChannel
|
||||
|
||||
# BOTH but, CHILD breaks FIRST
|
||||
elif (
|
||||
ipc_break['break_child_ipc_after'] is not False
|
||||
and (
|
||||
ipc_break['break_parent_ipc_after']
|
||||
> ipc_break['break_child_ipc_after']
|
||||
)
|
||||
):
|
||||
if pre_aclose_msgstream:
|
||||
expect_final_exc = KeyboardInterrupt
|
||||
|
||||
# NOTE when the parent IPC side dies (even if the child does as well
|
||||
# but the child fails BEFORE the parent) we always expect the
|
||||
# IPC layer to raise a closed-resource, NEVER do we expect
|
||||
# a stop msg since the parent-side ctx apis will error out
|
||||
# IMMEDIATELY before the child ever sends any 'stop' msg.
|
||||
#
|
||||
# ONLY PARENT breaks
|
||||
elif (
|
||||
ipc_break['break_parent_ipc_after']
|
||||
and
|
||||
ipc_break['break_child_ipc_after'] is False
|
||||
):
|
||||
# expect_final_exc = trio.ClosedResourceError
|
||||
expect_final_exc = tractor.TransportClosed
|
||||
|
||||
# BOTH but, PARENT breaks FIRST
|
||||
elif (
|
||||
ipc_break['break_parent_ipc_after'] is not False
|
||||
and (
|
||||
ipc_break['break_child_ipc_after']
|
||||
>
|
||||
ipc_break['break_parent_ipc_after']
|
||||
)
|
||||
):
|
||||
# expect_final_exc = trio.ClosedResourceError
|
||||
expect_final_exc = tractor.TransportClosed
|
||||
|
||||
with pytest.raises(
|
||||
expected_exception=(
|
||||
expect_final_exc,
|
||||
ExceptionGroup,
|
||||
),
|
||||
) as excinfo:
|
||||
try:
|
||||
trio.run(
|
||||
partial(
|
||||
mod.main,
|
||||
debug_mode=debug_mode,
|
||||
start_method=spawn_backend,
|
||||
loglevel=loglevel,
|
||||
pre_close=pre_aclose_msgstream,
|
||||
**ipc_break,
|
||||
)
|
||||
)
|
||||
except KeyboardInterrupt as _kbi:
|
||||
kbi = _kbi
|
||||
if expect_final_exc is not KeyboardInterrupt:
|
||||
pytest.fail(
|
||||
'Rxed unexpected KBI !?\n'
|
||||
f'{repr(kbi)}'
|
||||
)
|
||||
|
||||
raise
|
||||
|
||||
except tractor.TransportClosed as _tc:
|
||||
tc = _tc
|
||||
if expect_final_exc is KeyboardInterrupt:
|
||||
pytest.fail(
|
||||
'Unexpected transport failure !?\n'
|
||||
f'{repr(tc)}'
|
||||
)
|
||||
cause: Exception = tc.__cause__
|
||||
assert (
|
||||
type(cause) is trio.ClosedResourceError
|
||||
and
|
||||
cause.args[0] == 'another task closed this fd'
|
||||
)
|
||||
raise
|
||||
|
||||
# get raw instance from pytest wrapper
|
||||
value = excinfo.value
|
||||
if isinstance(value, ExceptionGroup):
|
||||
excs = value.exceptions
|
||||
assert len(excs) == 1
|
||||
final_exc = excs[0]
|
||||
assert isinstance(final_exc, expect_final_exc)
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def break_ipc_after_started(
|
||||
ctx: tractor.Context,
|
||||
) -> None:
|
||||
await ctx.started()
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
# TODO: make a test which verifies the error
|
||||
# for this, i.e. raises a `MsgTypeError`
|
||||
# await ctx.chan.send(None)
|
||||
|
||||
await break_ipc(
|
||||
stream=stream,
|
||||
pre_close=True,
|
||||
)
|
||||
print('child broke IPC and terminating')
|
||||
|
||||
|
||||
def test_stream_closed_right_after_ipc_break_and_zombie_lord_engages():
|
||||
'''
|
||||
Verify that is a subactor's IPC goes down just after bringing up
|
||||
a stream the parent can trigger a SIGINT and the child will be
|
||||
reaped out-of-IPC by the localhost process supervision machinery:
|
||||
aka "zombie lord".
|
||||
|
||||
'''
|
||||
async def main():
|
||||
with trio.fail_after(3):
|
||||
async with tractor.open_nursery() as an:
|
||||
portal = await an.start_actor(
|
||||
'ipc_breaker',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
with trio.move_on_after(1):
|
||||
async with (
|
||||
portal.open_context(
|
||||
break_ipc_after_started
|
||||
) as (ctx, sent),
|
||||
):
|
||||
async with ctx.open_stream():
|
||||
await trio.sleep(0.5)
|
||||
|
||||
print('parent waiting on context')
|
||||
|
||||
print(
|
||||
'parent exited context\n'
|
||||
'parent raising KBI..\n'
|
||||
)
|
||||
raise KeyboardInterrupt
|
||||
|
||||
with pytest.raises(KeyboardInterrupt):
|
||||
trio.run(main)
|
||||
|
|
@ -1,425 +0,0 @@
|
|||
'''
|
||||
Advanced streaming patterns using bidirectional streams and contexts.
|
||||
|
||||
'''
|
||||
from collections import Counter
|
||||
import itertools
|
||||
import platform
|
||||
|
||||
import pytest
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
def is_win():
|
||||
return platform.system() == 'Windows'
|
||||
|
||||
|
||||
_registry: dict[str, set[tractor.MsgStream]] = {
|
||||
'even': set(),
|
||||
'odd': set(),
|
||||
}
|
||||
|
||||
|
||||
async def publisher(
|
||||
|
||||
seed: int = 0,
|
||||
|
||||
) -> None:
|
||||
|
||||
global _registry
|
||||
|
||||
def is_even(i):
|
||||
return i % 2 == 0
|
||||
|
||||
for val in itertools.count(seed):
|
||||
|
||||
sub = 'even' if is_even(val) else 'odd'
|
||||
|
||||
for sub_stream in _registry[sub].copy():
|
||||
await sub_stream.send(val)
|
||||
|
||||
# throttle send rate to ~1kHz
|
||||
# making it readable to a human user
|
||||
await trio.sleep(1/1000)
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def subscribe(
|
||||
|
||||
ctx: tractor.Context,
|
||||
|
||||
) -> None:
|
||||
|
||||
global _registry
|
||||
|
||||
# syn caller
|
||||
await ctx.started(None)
|
||||
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
# update subs list as consumer requests
|
||||
async for new_subs in stream:
|
||||
|
||||
new_subs = set(new_subs)
|
||||
remove = new_subs - _registry.keys()
|
||||
|
||||
print(f'setting sub to {new_subs} for {ctx.chan.uid}')
|
||||
|
||||
# remove old subs
|
||||
for sub in remove:
|
||||
_registry[sub].remove(stream)
|
||||
|
||||
# add new subs for consumer
|
||||
for sub in new_subs:
|
||||
_registry[sub].add(stream)
|
||||
|
||||
|
||||
async def consumer(
|
||||
|
||||
subs: list[str],
|
||||
|
||||
) -> None:
|
||||
|
||||
uid = tractor.current_actor().uid
|
||||
|
||||
async with tractor.wait_for_actor('publisher') as portal:
|
||||
async with portal.open_context(subscribe) as (ctx, first):
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
# flip between the provided subs dynamically
|
||||
if len(subs) > 1:
|
||||
|
||||
for sub in itertools.cycle(subs):
|
||||
print(f'setting dynamic sub to {sub}')
|
||||
await stream.send([sub])
|
||||
|
||||
count = 0
|
||||
async for value in stream:
|
||||
print(f'{uid} got: {value}')
|
||||
if count > 5:
|
||||
break
|
||||
count += 1
|
||||
|
||||
else: # static sub
|
||||
|
||||
await stream.send(subs)
|
||||
async for value in stream:
|
||||
print(f'{uid} got: {value}')
|
||||
|
||||
|
||||
def test_dynamic_pub_sub():
|
||||
|
||||
global _registry
|
||||
|
||||
from multiprocessing import cpu_count
|
||||
cpus = cpu_count()
|
||||
|
||||
async def main():
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
# name of this actor will be same as target func
|
||||
await n.run_in_actor(publisher)
|
||||
|
||||
for i, sub in zip(
|
||||
range(cpus - 2),
|
||||
itertools.cycle(_registry.keys())
|
||||
):
|
||||
await n.run_in_actor(
|
||||
consumer,
|
||||
name=f'consumer_{sub}',
|
||||
subs=[sub],
|
||||
)
|
||||
|
||||
# make one dynamic subscriber
|
||||
await n.run_in_actor(
|
||||
consumer,
|
||||
name='consumer_dynamic',
|
||||
subs=list(_registry.keys()),
|
||||
)
|
||||
|
||||
# block until cancelled by user
|
||||
with trio.fail_after(3):
|
||||
await trio.sleep_forever()
|
||||
|
||||
try:
|
||||
trio.run(main)
|
||||
except (
|
||||
trio.TooSlowError,
|
||||
ExceptionGroup,
|
||||
) as err:
|
||||
if isinstance(err, ExceptionGroup):
|
||||
for suberr in err.exceptions:
|
||||
if isinstance(suberr, trio.TooSlowError):
|
||||
break
|
||||
else:
|
||||
pytest.fail('Never got a `TooSlowError` ?')
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def one_task_streams_and_one_handles_reqresp(
|
||||
|
||||
ctx: tractor.Context,
|
||||
|
||||
) -> None:
|
||||
|
||||
await ctx.started()
|
||||
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
async def pingpong():
|
||||
'''Run a simple req/response service.
|
||||
|
||||
'''
|
||||
async for msg in stream:
|
||||
print('rpc server ping')
|
||||
assert msg == 'ping'
|
||||
print('rpc server pong')
|
||||
await stream.send('pong')
|
||||
|
||||
async with trio.open_nursery() as n:
|
||||
n.start_soon(pingpong)
|
||||
|
||||
for _ in itertools.count():
|
||||
await stream.send('yo')
|
||||
await trio.sleep(0.01)
|
||||
|
||||
|
||||
def test_reqresp_ontopof_streaming():
|
||||
'''
|
||||
Test a subactor that both streams with one task and
|
||||
spawns another which handles a small requests-response
|
||||
dialogue over the same bidir-stream.
|
||||
|
||||
'''
|
||||
async def main():
|
||||
|
||||
# flat to make sure we get at least one pong
|
||||
got_pong: bool = False
|
||||
timeout: int = 2
|
||||
|
||||
if is_win(): # smh
|
||||
timeout = 4
|
||||
|
||||
with trio.move_on_after(timeout):
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
# name of this actor will be same as target func
|
||||
portal = await n.start_actor(
|
||||
'dual_tasks',
|
||||
enable_modules=[__name__]
|
||||
)
|
||||
|
||||
async with portal.open_context(
|
||||
one_task_streams_and_one_handles_reqresp,
|
||||
|
||||
) as (ctx, first):
|
||||
|
||||
assert first is None
|
||||
|
||||
async with ctx.open_stream() as stream:
|
||||
|
||||
await stream.send('ping')
|
||||
|
||||
async for msg in stream:
|
||||
print(f'client received: {msg}')
|
||||
|
||||
assert msg in {'pong', 'yo'}
|
||||
|
||||
if msg == 'pong':
|
||||
got_pong = True
|
||||
await stream.send('ping')
|
||||
print('client sent ping')
|
||||
|
||||
assert got_pong
|
||||
|
||||
try:
|
||||
trio.run(main)
|
||||
except trio.TooSlowError:
|
||||
pass
|
||||
|
||||
|
||||
async def async_gen_stream(sequence):
|
||||
for i in sequence:
|
||||
yield i
|
||||
await trio.sleep(0.1)
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def echo_ctx_stream(
|
||||
ctx: tractor.Context,
|
||||
) -> None:
|
||||
await ctx.started()
|
||||
|
||||
async with ctx.open_stream() as stream:
|
||||
async for msg in stream:
|
||||
await stream.send(msg)
|
||||
|
||||
|
||||
def test_sigint_both_stream_types():
|
||||
'''Verify that running a bi-directional and recv only stream
|
||||
side-by-side will cancel correctly from SIGINT.
|
||||
|
||||
'''
|
||||
timeout: float = 2
|
||||
if is_win(): # smh
|
||||
timeout += 1
|
||||
|
||||
async def main():
|
||||
with trio.fail_after(timeout):
|
||||
async with tractor.open_nursery() as n:
|
||||
# name of this actor will be same as target func
|
||||
portal = await n.start_actor(
|
||||
'2_way',
|
||||
enable_modules=[__name__]
|
||||
)
|
||||
|
||||
async with portal.open_context(echo_ctx_stream) as (ctx, _):
|
||||
async with ctx.open_stream() as stream:
|
||||
async with portal.open_stream_from(
|
||||
async_gen_stream,
|
||||
sequence=list(range(1)),
|
||||
) as gen_stream:
|
||||
|
||||
msg = await gen_stream.receive()
|
||||
await stream.send(msg)
|
||||
resp = await stream.receive()
|
||||
assert resp == msg
|
||||
raise KeyboardInterrupt
|
||||
|
||||
try:
|
||||
trio.run(main)
|
||||
assert 0, "Didn't receive KBI!?"
|
||||
except KeyboardInterrupt:
|
||||
pass
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def inf_streamer(
|
||||
ctx: tractor.Context,
|
||||
|
||||
) -> None:
|
||||
'''
|
||||
Stream increasing ints until terminated with a 'done' msg.
|
||||
|
||||
'''
|
||||
await ctx.started()
|
||||
|
||||
async with (
|
||||
ctx.open_stream() as stream,
|
||||
|
||||
# XXX TODO, INTERESTING CASE!!
|
||||
# - if we don't collapse the eg then the embedded
|
||||
# `trio.EndOfChannel` doesn't propagate directly to the above
|
||||
# .open_stream() parent, resulting in it also raising instead
|
||||
# of gracefully absorbing as normal.. so how to handle?
|
||||
trio.open_nursery(
|
||||
strict_exception_groups=False,
|
||||
) as tn,
|
||||
):
|
||||
async def close_stream_on_sentinel():
|
||||
async for msg in stream:
|
||||
if msg == 'done':
|
||||
print(
|
||||
'streamer RXed "done" sentinel msg!\n'
|
||||
'CLOSING `MsgStream`!'
|
||||
)
|
||||
await stream.aclose()
|
||||
else:
|
||||
print(f'streamer received {msg}')
|
||||
else:
|
||||
print('streamer exited recv loop')
|
||||
|
||||
# start termination detector
|
||||
tn.start_soon(close_stream_on_sentinel)
|
||||
|
||||
cap: int = 10000 # so that we don't spin forever when bug..
|
||||
for val in range(cap):
|
||||
try:
|
||||
print(f'streamer sending {val}')
|
||||
await stream.send(val)
|
||||
if val > cap:
|
||||
raise RuntimeError(
|
||||
'Streamer never cancelled by setinel?'
|
||||
)
|
||||
await trio.sleep(0.001)
|
||||
|
||||
# close out the stream gracefully
|
||||
except trio.ClosedResourceError:
|
||||
print('transport closed on streamer side!')
|
||||
assert stream.closed
|
||||
break
|
||||
else:
|
||||
raise RuntimeError(
|
||||
'Streamer not cancelled before finished sending?'
|
||||
)
|
||||
|
||||
print('streamer exited .open_streamer() block')
|
||||
|
||||
|
||||
def test_local_task_fanout_from_stream(
|
||||
debug_mode: bool,
|
||||
):
|
||||
'''
|
||||
Single stream with multiple local consumer tasks using the
|
||||
``MsgStream.subscribe()` api.
|
||||
|
||||
Ensure all tasks receive all values after stream completes
|
||||
sending.
|
||||
|
||||
'''
|
||||
consumers: int = 22
|
||||
|
||||
async def main():
|
||||
|
||||
counts = Counter()
|
||||
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=debug_mode,
|
||||
) as tn:
|
||||
p: tractor.Portal = await tn.start_actor(
|
||||
'inf_streamer',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
async with (
|
||||
p.open_context(inf_streamer) as (ctx, _),
|
||||
ctx.open_stream() as stream,
|
||||
):
|
||||
async def pull_and_count(name: str):
|
||||
# name = trio.lowlevel.current_task().name
|
||||
async with stream.subscribe() as recver:
|
||||
assert isinstance(
|
||||
recver,
|
||||
tractor.trionics.BroadcastReceiver
|
||||
)
|
||||
async for val in recver:
|
||||
print(f'bx {name} rx: {val}')
|
||||
counts[name] += 1
|
||||
|
||||
print(f'{name} bcaster ended')
|
||||
|
||||
print(f'{name} completed')
|
||||
|
||||
with trio.fail_after(3):
|
||||
async with trio.open_nursery() as nurse:
|
||||
for i in range(consumers):
|
||||
nurse.start_soon(
|
||||
pull_and_count,
|
||||
i,
|
||||
)
|
||||
|
||||
# delay to let bcast consumers pull msgs
|
||||
await trio.sleep(0.5)
|
||||
print('terminating nursery of bcast rxer consumers!')
|
||||
await stream.send('done')
|
||||
|
||||
print('closed stream connection')
|
||||
|
||||
assert len(counts) == consumers
|
||||
mx = max(counts.values())
|
||||
# make sure each task received all stream values
|
||||
assert all(val == mx for val in counts.values())
|
||||
|
||||
await p.cancel_actor()
|
||||
|
||||
trio.run(main)
|
||||
|
|
@ -1,631 +0,0 @@
|
|||
"""
|
||||
Cancellation and error propagation
|
||||
|
||||
"""
|
||||
import os
|
||||
import signal
|
||||
import platform
|
||||
import time
|
||||
from itertools import repeat
|
||||
|
||||
import pytest
|
||||
import trio
|
||||
import tractor
|
||||
from tractor._testing import (
|
||||
tractor_test,
|
||||
)
|
||||
from .conftest import no_windows
|
||||
|
||||
|
||||
def is_win():
|
||||
return platform.system() == 'Windows'
|
||||
|
||||
|
||||
async def assert_err(delay=0):
|
||||
await trio.sleep(delay)
|
||||
assert 0
|
||||
|
||||
|
||||
async def sleep_forever():
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
async def do_nuthin():
|
||||
# just nick the scheduler
|
||||
await trio.sleep(0)
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'args_err',
|
||||
[
|
||||
# expected to be thrown in assert_err
|
||||
({}, AssertionError),
|
||||
# argument mismatch raised in _invoke()
|
||||
({'unexpected': 10}, TypeError)
|
||||
],
|
||||
ids=['no_args', 'unexpected_args'],
|
||||
)
|
||||
def test_remote_error(reg_addr, args_err):
|
||||
'''
|
||||
Verify an error raised in a subactor that is propagated
|
||||
to the parent nursery, contains the underlying boxed builtin
|
||||
error type info and causes cancellation and reraising all the
|
||||
way up the stack.
|
||||
|
||||
'''
|
||||
args, errtype = args_err
|
||||
|
||||
async def main():
|
||||
async with tractor.open_nursery(
|
||||
registry_addrs=[reg_addr],
|
||||
) as nursery:
|
||||
|
||||
# on a remote type error caused by bad input args
|
||||
# this should raise directly which means we **don't** get
|
||||
# an exception group outside the nursery since the error
|
||||
# here and the far end task error are one in the same?
|
||||
portal = await nursery.run_in_actor(
|
||||
assert_err,
|
||||
name='errorer',
|
||||
**args
|
||||
)
|
||||
|
||||
# get result(s) from main task
|
||||
try:
|
||||
# this means the root actor will also raise a local
|
||||
# parent task error and thus an eg will propagate out
|
||||
# of this actor nursery.
|
||||
await portal.result()
|
||||
except tractor.RemoteActorError as err:
|
||||
assert err.boxed_type == errtype
|
||||
print("Look Maa that actor failed hard, hehh")
|
||||
raise
|
||||
|
||||
# ensure boxed errors
|
||||
if args:
|
||||
with pytest.raises(tractor.RemoteActorError) as excinfo:
|
||||
trio.run(main)
|
||||
|
||||
assert excinfo.value.boxed_type == errtype
|
||||
|
||||
else:
|
||||
# the root task will also error on the `Portal.result()`
|
||||
# call so we expect an error from there AND the child.
|
||||
# |_ tho seems like on new `trio` this doesn't always
|
||||
# happen?
|
||||
with pytest.raises((
|
||||
BaseExceptionGroup,
|
||||
tractor.RemoteActorError,
|
||||
)) as excinfo:
|
||||
trio.run(main)
|
||||
|
||||
# ensure boxed errors are `errtype`
|
||||
err: BaseException = excinfo.value
|
||||
if isinstance(err, BaseExceptionGroup):
|
||||
suberrs: list[BaseException] = err.exceptions
|
||||
else:
|
||||
suberrs: list[BaseException] = [err]
|
||||
|
||||
for exc in suberrs:
|
||||
assert exc.boxed_type == errtype
|
||||
|
||||
|
||||
def test_multierror(
|
||||
reg_addr: tuple[str, int],
|
||||
):
|
||||
'''
|
||||
Verify we raise a ``BaseExceptionGroup`` out of a nursery where
|
||||
more then one actor errors.
|
||||
|
||||
'''
|
||||
async def main():
|
||||
async with tractor.open_nursery(
|
||||
registry_addrs=[reg_addr],
|
||||
) as nursery:
|
||||
|
||||
await nursery.run_in_actor(assert_err, name='errorer1')
|
||||
portal2 = await nursery.run_in_actor(assert_err, name='errorer2')
|
||||
|
||||
# get result(s) from main task
|
||||
try:
|
||||
await portal2.result()
|
||||
except tractor.RemoteActorError as err:
|
||||
assert err.boxed_type is AssertionError
|
||||
print("Look Maa that first actor failed hard, hehh")
|
||||
raise
|
||||
|
||||
# here we should get a ``BaseExceptionGroup`` containing exceptions
|
||||
# from both subactors
|
||||
|
||||
with pytest.raises(BaseExceptionGroup):
|
||||
trio.run(main)
|
||||
|
||||
|
||||
@pytest.mark.parametrize('delay', (0, 0.5))
|
||||
@pytest.mark.parametrize(
|
||||
'num_subactors', range(25, 26),
|
||||
)
|
||||
def test_multierror_fast_nursery(reg_addr, start_method, num_subactors, delay):
|
||||
"""Verify we raise a ``BaseExceptionGroup`` out of a nursery where
|
||||
more then one actor errors and also with a delay before failure
|
||||
to test failure during an ongoing spawning.
|
||||
"""
|
||||
async def main():
|
||||
async with tractor.open_nursery(
|
||||
registry_addrs=[reg_addr],
|
||||
) as nursery:
|
||||
|
||||
for i in range(num_subactors):
|
||||
await nursery.run_in_actor(
|
||||
assert_err,
|
||||
name=f'errorer{i}',
|
||||
delay=delay
|
||||
)
|
||||
|
||||
# with pytest.raises(trio.MultiError) as exc_info:
|
||||
with pytest.raises(BaseExceptionGroup) as exc_info:
|
||||
trio.run(main)
|
||||
|
||||
assert exc_info.type == ExceptionGroup
|
||||
err = exc_info.value
|
||||
exceptions = err.exceptions
|
||||
|
||||
if len(exceptions) == 2:
|
||||
# sometimes oddly now there's an embedded BrokenResourceError ?
|
||||
for exc in exceptions:
|
||||
excs = getattr(exc, 'exceptions', None)
|
||||
if excs:
|
||||
exceptions = excs
|
||||
break
|
||||
|
||||
assert len(exceptions) == num_subactors
|
||||
|
||||
for exc in exceptions:
|
||||
assert isinstance(exc, tractor.RemoteActorError)
|
||||
assert exc.boxed_type is AssertionError
|
||||
|
||||
|
||||
async def do_nothing():
|
||||
pass
|
||||
|
||||
|
||||
@pytest.mark.parametrize('mechanism', ['nursery_cancel', KeyboardInterrupt])
|
||||
def test_cancel_single_subactor(reg_addr, mechanism):
|
||||
'''
|
||||
Ensure a ``ActorNursery.start_actor()`` spawned subactor
|
||||
cancels when the nursery is cancelled.
|
||||
|
||||
'''
|
||||
async def spawn_actor():
|
||||
'''
|
||||
Spawn an actor that blocks indefinitely then cancel via
|
||||
either `ActorNursery.cancel()` or an exception raise.
|
||||
|
||||
'''
|
||||
async with tractor.open_nursery(
|
||||
registry_addrs=[reg_addr],
|
||||
) as nursery:
|
||||
|
||||
portal = await nursery.start_actor(
|
||||
'nothin', enable_modules=[__name__],
|
||||
)
|
||||
assert (await portal.run(do_nothing)) is None
|
||||
|
||||
if mechanism == 'nursery_cancel':
|
||||
# would hang otherwise
|
||||
await nursery.cancel()
|
||||
else:
|
||||
raise mechanism
|
||||
|
||||
if mechanism == 'nursery_cancel':
|
||||
trio.run(spawn_actor)
|
||||
else:
|
||||
with pytest.raises(mechanism):
|
||||
trio.run(spawn_actor)
|
||||
|
||||
|
||||
async def stream_forever():
|
||||
for i in repeat("I can see these little future bubble things"):
|
||||
# each yielded value is sent over the ``Channel`` to the
|
||||
# parent actor
|
||||
yield i
|
||||
await trio.sleep(0.01)
|
||||
|
||||
|
||||
@tractor_test
|
||||
async def test_cancel_infinite_streamer(start_method):
|
||||
|
||||
# stream for at most 1 seconds
|
||||
with trio.move_on_after(1) as cancel_scope:
|
||||
async with tractor.open_nursery() as n:
|
||||
portal = await n.start_actor(
|
||||
'donny',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
# this async for loop streams values from the above
|
||||
# async generator running in a separate process
|
||||
async with portal.open_stream_from(stream_forever) as stream:
|
||||
async for letter in stream:
|
||||
print(letter)
|
||||
|
||||
# we support trio's cancellation system
|
||||
assert cancel_scope.cancelled_caught
|
||||
assert n.cancelled
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'num_actors_and_errs',
|
||||
[
|
||||
# daemon actors sit idle while single task actors error out
|
||||
(1, tractor.RemoteActorError, AssertionError, (assert_err, {}), None),
|
||||
(2, BaseExceptionGroup, AssertionError, (assert_err, {}), None),
|
||||
(3, BaseExceptionGroup, AssertionError, (assert_err, {}), None),
|
||||
|
||||
# 1 daemon actor errors out while single task actors sleep forever
|
||||
(3, tractor.RemoteActorError, AssertionError, (sleep_forever, {}),
|
||||
(assert_err, {}, True)),
|
||||
# daemon actors error out after brief delay while single task
|
||||
# actors complete quickly
|
||||
(3, tractor.RemoteActorError, AssertionError,
|
||||
(do_nuthin, {}), (assert_err, {'delay': 1}, True)),
|
||||
# daemon complete quickly delay while single task
|
||||
# actors error after brief delay
|
||||
(3, BaseExceptionGroup, AssertionError,
|
||||
(assert_err, {'delay': 1}), (do_nuthin, {}, False)),
|
||||
],
|
||||
ids=[
|
||||
'1_run_in_actor_fails',
|
||||
'2_run_in_actors_fail',
|
||||
'3_run_in_actors_fail',
|
||||
'1_daemon_actors_fail',
|
||||
'1_daemon_actors_fail_all_run_in_actors_dun_quick',
|
||||
'no_daemon_actors_fail_all_run_in_actors_sleep_then_fail',
|
||||
],
|
||||
)
|
||||
@tractor_test
|
||||
async def test_some_cancels_all(num_actors_and_errs, start_method, loglevel):
|
||||
"""Verify a subset of failed subactors causes all others in
|
||||
the nursery to be cancelled just like the strategy in trio.
|
||||
|
||||
This is the first and only supervisory strategy at the moment.
|
||||
"""
|
||||
num_actors, first_err, err_type, ria_func, da_func = num_actors_and_errs
|
||||
try:
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
# spawn the same number of deamon actors which should be cancelled
|
||||
dactor_portals = []
|
||||
for i in range(num_actors):
|
||||
dactor_portals.append(await n.start_actor(
|
||||
f'deamon_{i}',
|
||||
enable_modules=[__name__],
|
||||
))
|
||||
|
||||
func, kwargs = ria_func
|
||||
riactor_portals = []
|
||||
for i in range(num_actors):
|
||||
# start actor(s) that will fail immediately
|
||||
riactor_portals.append(
|
||||
await n.run_in_actor(
|
||||
func,
|
||||
name=f'actor_{i}',
|
||||
**kwargs
|
||||
)
|
||||
)
|
||||
|
||||
if da_func:
|
||||
func, kwargs, expect_error = da_func
|
||||
for portal in dactor_portals:
|
||||
# if this function fails then we should error here
|
||||
# and the nursery should teardown all other actors
|
||||
try:
|
||||
await portal.run(func, **kwargs)
|
||||
|
||||
except tractor.RemoteActorError as err:
|
||||
assert err.boxed_type == err_type
|
||||
# we only expect this first error to propogate
|
||||
# (all other daemons are cancelled before they
|
||||
# can be scheduled)
|
||||
num_actors = 1
|
||||
# reraise so nursery teardown is triggered
|
||||
raise
|
||||
else:
|
||||
if expect_error:
|
||||
pytest.fail(
|
||||
"Deamon call should fail at checkpoint?")
|
||||
|
||||
# should error here with a ``RemoteActorError`` or ``MultiError``
|
||||
|
||||
except first_err as err:
|
||||
if isinstance(err, BaseExceptionGroup):
|
||||
assert len(err.exceptions) == num_actors
|
||||
for exc in err.exceptions:
|
||||
if isinstance(exc, tractor.RemoteActorError):
|
||||
assert exc.boxed_type == err_type
|
||||
else:
|
||||
assert isinstance(exc, trio.Cancelled)
|
||||
elif isinstance(err, tractor.RemoteActorError):
|
||||
assert err.boxed_type == err_type
|
||||
|
||||
assert n.cancelled is True
|
||||
assert not n._children
|
||||
else:
|
||||
pytest.fail("Should have gotten a remote assertion error?")
|
||||
|
||||
|
||||
async def spawn_and_error(breadth, depth) -> None:
|
||||
name = tractor.current_actor().name
|
||||
async with tractor.open_nursery() as nursery:
|
||||
for i in range(breadth):
|
||||
|
||||
if depth > 0:
|
||||
|
||||
args = (
|
||||
spawn_and_error,
|
||||
)
|
||||
kwargs = {
|
||||
'name': f'spawner_{i}_depth_{depth}',
|
||||
'breadth': breadth,
|
||||
'depth': depth - 1,
|
||||
}
|
||||
else:
|
||||
args = (
|
||||
assert_err,
|
||||
)
|
||||
kwargs = {
|
||||
'name': f'{name}_errorer_{i}',
|
||||
}
|
||||
await nursery.run_in_actor(*args, **kwargs)
|
||||
|
||||
|
||||
@tractor_test
|
||||
async def test_nested_multierrors(loglevel, start_method):
|
||||
'''
|
||||
Test that failed actor sets are wrapped in `BaseExceptionGroup`s. This
|
||||
test goes only 2 nurseries deep but we should eventually have tests
|
||||
for arbitrary n-depth actor trees.
|
||||
|
||||
'''
|
||||
if start_method == 'trio':
|
||||
depth = 3
|
||||
subactor_breadth = 2
|
||||
else:
|
||||
# XXX: multiprocessing can't seem to handle any more then 2 depth
|
||||
# process trees for whatever reason.
|
||||
# Any more process levels then this and we see bugs that cause
|
||||
# hangs and broken pipes all over the place...
|
||||
if start_method == 'forkserver':
|
||||
pytest.skip("Forksever sux hard at nested spawning...")
|
||||
depth = 1 # means an additional actor tree of spawning (2 levels deep)
|
||||
subactor_breadth = 2
|
||||
|
||||
with trio.fail_after(120):
|
||||
try:
|
||||
async with tractor.open_nursery() as nursery:
|
||||
for i in range(subactor_breadth):
|
||||
await nursery.run_in_actor(
|
||||
spawn_and_error,
|
||||
name=f'spawner_{i}',
|
||||
breadth=subactor_breadth,
|
||||
depth=depth,
|
||||
)
|
||||
except BaseExceptionGroup as err:
|
||||
assert len(err.exceptions) == subactor_breadth
|
||||
for subexc in err.exceptions:
|
||||
|
||||
# verify first level actor errors are wrapped as remote
|
||||
if is_win():
|
||||
|
||||
# windows is often too slow and cancellation seems
|
||||
# to happen before an actor is spawned
|
||||
if isinstance(subexc, trio.Cancelled):
|
||||
continue
|
||||
|
||||
elif isinstance(subexc, tractor.RemoteActorError):
|
||||
# on windows it seems we can't exactly be sure wtf
|
||||
# will happen..
|
||||
assert subexc.boxed_type in (
|
||||
tractor.RemoteActorError,
|
||||
trio.Cancelled,
|
||||
BaseExceptionGroup,
|
||||
)
|
||||
|
||||
elif isinstance(subexc, BaseExceptionGroup):
|
||||
for subsub in subexc.exceptions:
|
||||
|
||||
if subsub in (tractor.RemoteActorError,):
|
||||
subsub = subsub.boxed_type
|
||||
|
||||
assert type(subsub) in (
|
||||
trio.Cancelled,
|
||||
BaseExceptionGroup,
|
||||
)
|
||||
else:
|
||||
assert isinstance(subexc, tractor.RemoteActorError)
|
||||
|
||||
if depth > 0 and subactor_breadth > 1:
|
||||
# XXX not sure what's up with this..
|
||||
# on windows sometimes spawning is just too slow and
|
||||
# we get back the (sent) cancel signal instead
|
||||
if is_win():
|
||||
if isinstance(subexc, tractor.RemoteActorError):
|
||||
assert subexc.boxed_type in (
|
||||
BaseExceptionGroup,
|
||||
tractor.RemoteActorError
|
||||
)
|
||||
else:
|
||||
assert isinstance(subexc, BaseExceptionGroup)
|
||||
else:
|
||||
assert subexc.boxed_type is ExceptionGroup
|
||||
else:
|
||||
assert subexc.boxed_type in (
|
||||
tractor.RemoteActorError,
|
||||
trio.Cancelled
|
||||
)
|
||||
|
||||
|
||||
@no_windows
|
||||
def test_cancel_via_SIGINT(
|
||||
loglevel,
|
||||
start_method,
|
||||
spawn_backend,
|
||||
):
|
||||
"""Ensure that a control-C (SIGINT) signal cancels both the parent and
|
||||
child processes in trionic fashion
|
||||
"""
|
||||
pid = os.getpid()
|
||||
|
||||
async def main():
|
||||
with trio.fail_after(2):
|
||||
async with tractor.open_nursery() as tn:
|
||||
await tn.start_actor('sucka')
|
||||
if 'mp' in spawn_backend:
|
||||
time.sleep(0.1)
|
||||
os.kill(pid, signal.SIGINT)
|
||||
await trio.sleep_forever()
|
||||
|
||||
with pytest.raises(KeyboardInterrupt):
|
||||
trio.run(main)
|
||||
|
||||
|
||||
@no_windows
|
||||
def test_cancel_via_SIGINT_other_task(
|
||||
loglevel,
|
||||
start_method,
|
||||
spawn_backend,
|
||||
):
|
||||
"""Ensure that a control-C (SIGINT) signal cancels both the parent
|
||||
and child processes in trionic fashion even a subprocess is started
|
||||
from a seperate ``trio`` child task.
|
||||
"""
|
||||
pid = os.getpid()
|
||||
timeout: float = 2
|
||||
if is_win(): # smh
|
||||
timeout += 1
|
||||
|
||||
async def spawn_and_sleep_forever(
|
||||
task_status=trio.TASK_STATUS_IGNORED
|
||||
):
|
||||
async with tractor.open_nursery() as tn:
|
||||
for i in range(3):
|
||||
await tn.run_in_actor(
|
||||
sleep_forever,
|
||||
name='namesucka',
|
||||
)
|
||||
task_status.started()
|
||||
await trio.sleep_forever()
|
||||
|
||||
async def main():
|
||||
# should never timeout since SIGINT should cancel the current program
|
||||
with trio.fail_after(timeout):
|
||||
async with trio.open_nursery(
|
||||
strict_exception_groups=False,
|
||||
) as n:
|
||||
await n.start(spawn_and_sleep_forever)
|
||||
if 'mp' in spawn_backend:
|
||||
time.sleep(0.1)
|
||||
os.kill(pid, signal.SIGINT)
|
||||
|
||||
with pytest.raises(KeyboardInterrupt):
|
||||
trio.run(main)
|
||||
|
||||
|
||||
async def spin_for(period=3):
|
||||
"Sync sleep."
|
||||
time.sleep(period)
|
||||
|
||||
|
||||
async def spawn():
|
||||
async with tractor.open_nursery() as tn:
|
||||
await tn.run_in_actor(
|
||||
spin_for,
|
||||
name='sleeper',
|
||||
)
|
||||
|
||||
|
||||
@no_windows
|
||||
def test_cancel_while_childs_child_in_sync_sleep(
|
||||
loglevel,
|
||||
start_method,
|
||||
spawn_backend,
|
||||
):
|
||||
"""Verify that a child cancelled while executing sync code is torn
|
||||
down even when that cancellation is triggered by the parent
|
||||
2 nurseries "up".
|
||||
"""
|
||||
if start_method == 'forkserver':
|
||||
pytest.skip("Forksever sux hard at resuming from sync sleep...")
|
||||
|
||||
async def main():
|
||||
with trio.fail_after(2):
|
||||
async with tractor.open_nursery() as tn:
|
||||
await tn.run_in_actor(
|
||||
spawn,
|
||||
name='spawn',
|
||||
)
|
||||
await trio.sleep(1)
|
||||
assert 0
|
||||
|
||||
with pytest.raises(AssertionError):
|
||||
trio.run(main)
|
||||
|
||||
|
||||
def test_fast_graceful_cancel_when_spawn_task_in_soft_proc_wait_for_daemon(
|
||||
start_method,
|
||||
):
|
||||
'''
|
||||
This is a very subtle test which demonstrates how cancellation
|
||||
during process collection can result in non-optimal teardown
|
||||
performance on daemon actors. The fix for this test was to handle
|
||||
``trio.Cancelled`` specially in the spawn task waiting in
|
||||
`proc.wait()` such that ``Portal.cancel_actor()`` is called before
|
||||
executing the "hard reap" sequence (which has an up to 3 second
|
||||
delay currently).
|
||||
|
||||
In other words, if we can cancel the actor using a graceful remote
|
||||
cancellation, and it's faster, we might as well do it.
|
||||
|
||||
'''
|
||||
kbi_delay = 0.5
|
||||
timeout: float = 2.9
|
||||
|
||||
if is_win(): # smh
|
||||
timeout += 1
|
||||
|
||||
async def main():
|
||||
start = time.time()
|
||||
try:
|
||||
async with trio.open_nursery() as nurse:
|
||||
async with tractor.open_nursery() as tn:
|
||||
p = await tn.start_actor(
|
||||
'fast_boi',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
async def delayed_kbi():
|
||||
await trio.sleep(kbi_delay)
|
||||
print(f'RAISING KBI after {kbi_delay} s')
|
||||
raise KeyboardInterrupt
|
||||
|
||||
# start task which raises a kbi **after**
|
||||
# the actor nursery ``__aexit__()`` has
|
||||
# been run.
|
||||
nurse.start_soon(delayed_kbi)
|
||||
|
||||
await p.run(do_nuthin)
|
||||
|
||||
# need to explicitly re-raise the lone kbi..now
|
||||
except* KeyboardInterrupt as kbi_eg:
|
||||
assert (len(excs := kbi_eg.exceptions) == 1)
|
||||
raise excs[0]
|
||||
|
||||
finally:
|
||||
duration = time.time() - start
|
||||
if duration > timeout:
|
||||
raise trio.TooSlowError(
|
||||
'daemon cancel was slower then necessary..'
|
||||
)
|
||||
|
||||
with pytest.raises(KeyboardInterrupt):
|
||||
trio.run(main)
|
||||
|
|
@ -1,176 +0,0 @@
|
|||
'''
|
||||
Test a service style daemon that maintains a nursery for spawning
|
||||
"remote async tasks" including both spawning other long living
|
||||
sub-sub-actor daemons.
|
||||
|
||||
'''
|
||||
from typing import Optional
|
||||
import asyncio
|
||||
from contextlib import (
|
||||
asynccontextmanager as acm,
|
||||
aclosing,
|
||||
)
|
||||
|
||||
import pytest
|
||||
import trio
|
||||
import tractor
|
||||
from tractor import RemoteActorError
|
||||
|
||||
|
||||
async def aio_streamer(
|
||||
from_trio: asyncio.Queue,
|
||||
to_trio: trio.abc.SendChannel,
|
||||
) -> trio.abc.ReceiveChannel:
|
||||
|
||||
# required first msg to sync caller
|
||||
to_trio.send_nowait(None)
|
||||
|
||||
from itertools import cycle
|
||||
for i in cycle(range(10)):
|
||||
to_trio.send_nowait(i)
|
||||
await asyncio.sleep(0.01)
|
||||
|
||||
|
||||
async def trio_streamer():
|
||||
from itertools import cycle
|
||||
for i in cycle(range(10)):
|
||||
yield i
|
||||
await trio.sleep(0.01)
|
||||
|
||||
|
||||
async def trio_sleep_and_err(delay: float = 0.5):
|
||||
await trio.sleep(delay)
|
||||
# name error
|
||||
doggy() # noqa
|
||||
|
||||
|
||||
_cached_stream: Optional[
|
||||
trio.abc.ReceiveChannel
|
||||
] = None
|
||||
|
||||
|
||||
@acm
|
||||
async def wrapper_mngr(
|
||||
):
|
||||
from tractor.trionics import broadcast_receiver
|
||||
global _cached_stream
|
||||
in_aio = tractor.current_actor().is_infected_aio()
|
||||
|
||||
if in_aio:
|
||||
if _cached_stream:
|
||||
|
||||
from_aio = _cached_stream
|
||||
|
||||
# if we already have a cached feed deliver a rx side clone
|
||||
# to consumer
|
||||
async with broadcast_receiver(from_aio, 6) as from_aio:
|
||||
yield from_aio
|
||||
return
|
||||
else:
|
||||
async with tractor.to_asyncio.open_channel_from(
|
||||
aio_streamer,
|
||||
) as (first, from_aio):
|
||||
assert not first
|
||||
|
||||
# cache it so next task uses broadcast receiver
|
||||
_cached_stream = from_aio
|
||||
|
||||
yield from_aio
|
||||
else:
|
||||
async with aclosing(trio_streamer()) as stream:
|
||||
# cache it so next task uses broadcast receiver
|
||||
_cached_stream = stream
|
||||
yield stream
|
||||
|
||||
|
||||
_nursery: trio.Nursery = None
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def trio_main(
|
||||
ctx: tractor.Context,
|
||||
):
|
||||
# sync
|
||||
await ctx.started()
|
||||
|
||||
# stash a "service nursery" as "actor local" (aka a Python global)
|
||||
global _nursery
|
||||
tn = _nursery
|
||||
assert tn
|
||||
|
||||
async def consume_stream():
|
||||
async with wrapper_mngr() as stream:
|
||||
async for msg in stream:
|
||||
print(msg)
|
||||
|
||||
# run 2 tasks to ensure broadcaster chan use
|
||||
tn.start_soon(consume_stream)
|
||||
tn.start_soon(consume_stream)
|
||||
|
||||
tn.start_soon(trio_sleep_and_err)
|
||||
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def open_actor_local_nursery(
|
||||
ctx: tractor.Context,
|
||||
):
|
||||
global _nursery
|
||||
async with trio.open_nursery(
|
||||
strict_exception_groups=False,
|
||||
) as tn:
|
||||
_nursery = tn
|
||||
await ctx.started()
|
||||
await trio.sleep(10)
|
||||
# await trio.sleep(1)
|
||||
|
||||
# XXX: this causes the hang since
|
||||
# the caller does not unblock from its own
|
||||
# ``trio.sleep_forever()``.
|
||||
|
||||
# TODO: we need to test a simple ctx task starting remote tasks
|
||||
# that error and then blocking on a ``Nursery.start()`` which
|
||||
# never yields back.. aka a scenario where the
|
||||
# ``tractor.context`` task IS NOT in the service n's cancel
|
||||
# scope.
|
||||
tn.cancel_scope.cancel()
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'asyncio_mode',
|
||||
[True, False],
|
||||
ids='asyncio_mode={}'.format,
|
||||
)
|
||||
def test_actor_managed_trio_nursery_task_error_cancels_aio(
|
||||
asyncio_mode: bool,
|
||||
reg_addr: tuple,
|
||||
):
|
||||
'''
|
||||
Verify that a ``trio`` nursery created managed in a child actor
|
||||
correctly relays errors to the parent actor when one of its spawned
|
||||
tasks errors even when running in infected asyncio mode and using
|
||||
broadcast receivers for multi-task-per-actor subscription.
|
||||
|
||||
'''
|
||||
async def main():
|
||||
|
||||
# cancel the nursery shortly after boot
|
||||
async with tractor.open_nursery() as n:
|
||||
p = await n.start_actor(
|
||||
'nursery_mngr',
|
||||
infect_asyncio=asyncio_mode, # TODO, is this enabling debug mode?
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
async with (
|
||||
p.open_context(open_actor_local_nursery) as (ctx, first),
|
||||
p.open_context(trio_main) as (ctx, first),
|
||||
):
|
||||
await trio.sleep_forever()
|
||||
|
||||
with pytest.raises(RemoteActorError) as excinfo:
|
||||
trio.run(main)
|
||||
|
||||
# verify boxed error
|
||||
err = excinfo.value
|
||||
assert err.boxed_type is NameError
|
||||
|
|
@ -1,82 +0,0 @@
|
|||
import itertools
|
||||
|
||||
import pytest
|
||||
import trio
|
||||
import tractor
|
||||
from tractor import open_actor_cluster
|
||||
from tractor.trionics import gather_contexts
|
||||
from tractor._testing import tractor_test
|
||||
|
||||
MESSAGE = 'tractoring at full speed'
|
||||
|
||||
|
||||
def test_empty_mngrs_input_raises() -> None:
|
||||
|
||||
async def main():
|
||||
with trio.fail_after(1):
|
||||
async with (
|
||||
open_actor_cluster(
|
||||
modules=[__name__],
|
||||
|
||||
# NOTE: ensure we can passthrough runtime opts
|
||||
loglevel='info',
|
||||
# debug_mode=True,
|
||||
|
||||
) as portals,
|
||||
|
||||
gather_contexts(
|
||||
# NOTE: it's the use of inline-generator syntax
|
||||
# here that causes the empty input.
|
||||
mngrs=(
|
||||
p.open_context(worker) for p in portals.values()
|
||||
),
|
||||
),
|
||||
):
|
||||
assert 0
|
||||
|
||||
with pytest.raises(ValueError):
|
||||
trio.run(main)
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def worker(
|
||||
ctx: tractor.Context,
|
||||
|
||||
) -> None:
|
||||
|
||||
await ctx.started()
|
||||
|
||||
async with ctx.open_stream(
|
||||
allow_overruns=True,
|
||||
) as stream:
|
||||
|
||||
# TODO: this with the below assert causes a hang bug?
|
||||
# with trio.move_on_after(1):
|
||||
|
||||
async for msg in stream:
|
||||
# do something with msg
|
||||
print(msg)
|
||||
assert msg == MESSAGE
|
||||
|
||||
# TODO: does this ever cause a hang
|
||||
# assert 0
|
||||
|
||||
|
||||
@tractor_test
|
||||
async def test_streaming_to_actor_cluster() -> None:
|
||||
|
||||
async with (
|
||||
open_actor_cluster(modules=[__name__]) as portals,
|
||||
|
||||
gather_contexts(
|
||||
mngrs=[p.open_context(worker) for p in portals.values()],
|
||||
) as contexts,
|
||||
|
||||
gather_contexts(
|
||||
mngrs=[ctx[0].open_stream() for ctx in contexts],
|
||||
) as streams,
|
||||
|
||||
):
|
||||
with trio.move_on_after(1):
|
||||
for stream in itertools.cycle(streams):
|
||||
await stream.send(MESSAGE)
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -1,47 +1,39 @@
|
|||
"""
|
||||
Actor "discovery" testing
|
||||
"""
|
||||
import os
|
||||
import signal
|
||||
import platform
|
||||
from functools import partial
|
||||
import itertools
|
||||
|
||||
import pytest
|
||||
import tractor
|
||||
from tractor._testing import tractor_test
|
||||
import trio
|
||||
|
||||
from conftest import tractor_test
|
||||
|
||||
|
||||
@tractor_test
|
||||
async def test_reg_then_unreg(reg_addr):
|
||||
async def test_reg_then_unreg(arb_addr):
|
||||
actor = tractor.current_actor()
|
||||
assert actor.is_arbiter
|
||||
assert len(actor._registry) == 1 # only self is registered
|
||||
|
||||
async with tractor.open_nursery(
|
||||
registry_addrs=[reg_addr],
|
||||
) as n:
|
||||
|
||||
portal = await n.start_actor('actor', enable_modules=[__name__])
|
||||
async with tractor.open_nursery() as n:
|
||||
portal = await n.start_actor('actor', rpc_module_paths=[__name__])
|
||||
uid = portal.channel.uid
|
||||
|
||||
async with tractor.get_registry(*reg_addr) as aportal:
|
||||
# this local actor should be the arbiter
|
||||
async with tractor.get_arbiter(*arb_addr) as aportal:
|
||||
# local actor should be the arbiter
|
||||
assert actor is aportal.actor
|
||||
|
||||
async with tractor.wait_for_actor('actor'):
|
||||
# sub-actor uid should be in the registry
|
||||
assert uid in aportal.actor._registry
|
||||
sockaddrs = actor._registry[uid]
|
||||
# XXX: can we figure out what the listen addr will be?
|
||||
assert sockaddrs
|
||||
# sub-actor uid should be in the registry
|
||||
await trio.sleep(0.1) # registering is async, so..
|
||||
assert uid in aportal.actor._registry
|
||||
sockaddrs = actor._registry[uid]
|
||||
# XXX: can we figure out what the listen addr will be?
|
||||
assert sockaddrs
|
||||
|
||||
await n.cancel() # tear down nursery
|
||||
|
||||
await trio.sleep(0.1)
|
||||
assert uid not in aportal.actor._registry
|
||||
sockaddrs = actor._registry.get(uid)
|
||||
sockaddrs = actor._registry[uid]
|
||||
assert not sockaddrs
|
||||
|
||||
|
||||
|
|
@ -52,342 +44,37 @@ async def hi():
|
|||
return the_line.format(tractor.current_actor().name)
|
||||
|
||||
|
||||
async def say_hello(
|
||||
other_actor: str,
|
||||
reg_addr: tuple[str, int],
|
||||
):
|
||||
await trio.sleep(1) # wait for other actor to spawn
|
||||
async with tractor.find_actor(
|
||||
other_actor,
|
||||
registry_addrs=[reg_addr],
|
||||
) as portal:
|
||||
assert portal is not None
|
||||
async def say_hello(other_actor):
|
||||
await trio.sleep(0.4) # wait for other actor to spawn
|
||||
async with tractor.find_actor(other_actor) as portal:
|
||||
return await portal.run(__name__, 'hi')
|
||||
|
||||
|
||||
async def say_hello_use_wait(
|
||||
other_actor: str,
|
||||
reg_addr: tuple[str, int],
|
||||
):
|
||||
async with tractor.wait_for_actor(
|
||||
other_actor,
|
||||
registry_addr=reg_addr,
|
||||
) as portal:
|
||||
assert portal is not None
|
||||
async def say_hello_use_wait(other_actor):
|
||||
async with tractor.wait_for_actor(other_actor) as portal:
|
||||
result = await portal.run(__name__, 'hi')
|
||||
return result
|
||||
|
||||
|
||||
@tractor_test
|
||||
@pytest.mark.parametrize('func', [say_hello, say_hello_use_wait])
|
||||
async def test_trynamic_trio(
|
||||
func,
|
||||
start_method,
|
||||
reg_addr,
|
||||
):
|
||||
'''
|
||||
Root actor acting as the "director" and running one-shot-task-actors
|
||||
for the directed subs.
|
||||
|
||||
'''
|
||||
async def test_trynamic_trio(func):
|
||||
"""Main tractor entry point, the "master" process (for now
|
||||
acts as the "director").
|
||||
"""
|
||||
async with tractor.open_nursery() as n:
|
||||
print("Alright... Action!")
|
||||
|
||||
donny = await n.run_in_actor(
|
||||
'donny',
|
||||
func,
|
||||
other_actor='gretchen',
|
||||
reg_addr=reg_addr,
|
||||
name='donny',
|
||||
)
|
||||
gretchen = await n.run_in_actor(
|
||||
'gretchen',
|
||||
func,
|
||||
other_actor='donny',
|
||||
reg_addr=reg_addr,
|
||||
name='gretchen',
|
||||
)
|
||||
print(await gretchen.result())
|
||||
print(await donny.result())
|
||||
print("CUTTTT CUUTT CUT!!?! Donny!! You're supposed to say...")
|
||||
|
||||
|
||||
async def stream_forever():
|
||||
for i in itertools.count():
|
||||
yield i
|
||||
await trio.sleep(0.01)
|
||||
|
||||
|
||||
async def cancel(use_signal, delay=0):
|
||||
# hold on there sally
|
||||
await trio.sleep(delay)
|
||||
|
||||
# trigger cancel
|
||||
if use_signal:
|
||||
if platform.system() == 'Windows':
|
||||
pytest.skip("SIGINT not supported on windows")
|
||||
os.kill(os.getpid(), signal.SIGINT)
|
||||
else:
|
||||
raise KeyboardInterrupt
|
||||
|
||||
|
||||
async def stream_from(portal):
|
||||
async with portal.open_stream_from(stream_forever) as stream:
|
||||
async for value in stream:
|
||||
print(value)
|
||||
|
||||
|
||||
async def unpack_reg(actor_or_portal):
|
||||
'''
|
||||
Get and unpack a "registry" RPC request from the "arbiter" registry
|
||||
system.
|
||||
|
||||
'''
|
||||
if getattr(actor_or_portal, 'get_registry', None):
|
||||
msg = await actor_or_portal.get_registry()
|
||||
else:
|
||||
msg = await actor_or_portal.run_from_ns('self', 'get_registry')
|
||||
|
||||
return {tuple(key.split('.')): val for key, val in msg.items()}
|
||||
|
||||
|
||||
async def spawn_and_check_registry(
|
||||
reg_addr: tuple,
|
||||
use_signal: bool,
|
||||
remote_arbiter: bool = False,
|
||||
with_streaming: bool = False,
|
||||
|
||||
) -> None:
|
||||
|
||||
async with tractor.open_root_actor(
|
||||
registry_addrs=[reg_addr],
|
||||
):
|
||||
async with tractor.get_registry(*reg_addr) as portal:
|
||||
# runtime needs to be up to call this
|
||||
actor = tractor.current_actor()
|
||||
|
||||
if remote_arbiter:
|
||||
assert not actor.is_arbiter
|
||||
|
||||
if actor.is_arbiter:
|
||||
extra = 1 # arbiter is local root actor
|
||||
get_reg = partial(unpack_reg, actor)
|
||||
|
||||
else:
|
||||
get_reg = partial(unpack_reg, portal)
|
||||
extra = 2 # local root actor + remote arbiter
|
||||
|
||||
# ensure current actor is registered
|
||||
registry = await get_reg()
|
||||
assert actor.uid in registry
|
||||
|
||||
try:
|
||||
async with tractor.open_nursery() as n:
|
||||
async with trio.open_nursery(
|
||||
strict_exception_groups=False,
|
||||
) as trion:
|
||||
|
||||
portals = {}
|
||||
for i in range(3):
|
||||
name = f'a{i}'
|
||||
if with_streaming:
|
||||
portals[name] = await n.start_actor(
|
||||
name=name, enable_modules=[__name__])
|
||||
|
||||
else: # no streaming
|
||||
portals[name] = await n.run_in_actor(
|
||||
trio.sleep_forever, name=name)
|
||||
|
||||
# wait on last actor to come up
|
||||
async with tractor.wait_for_actor(name):
|
||||
registry = await get_reg()
|
||||
for uid in n._children:
|
||||
assert uid in registry
|
||||
|
||||
assert len(portals) + extra == len(registry)
|
||||
|
||||
if with_streaming:
|
||||
await trio.sleep(0.1)
|
||||
|
||||
pts = list(portals.values())
|
||||
for p in pts[:-1]:
|
||||
trion.start_soon(stream_from, p)
|
||||
|
||||
# stream for 1 sec
|
||||
trion.start_soon(cancel, use_signal, 1)
|
||||
|
||||
last_p = pts[-1]
|
||||
await stream_from(last_p)
|
||||
|
||||
else:
|
||||
await cancel(use_signal)
|
||||
|
||||
finally:
|
||||
await trio.sleep(0.5)
|
||||
|
||||
# all subactors should have de-registered
|
||||
registry = await get_reg()
|
||||
assert len(registry) == extra
|
||||
assert actor.uid in registry
|
||||
|
||||
|
||||
@pytest.mark.parametrize('use_signal', [False, True])
|
||||
@pytest.mark.parametrize('with_streaming', [False, True])
|
||||
def test_subactors_unregister_on_cancel(
|
||||
start_method,
|
||||
use_signal,
|
||||
reg_addr,
|
||||
with_streaming,
|
||||
):
|
||||
'''
|
||||
Verify that cancelling a nursery results in all subactors
|
||||
deregistering themselves with the arbiter.
|
||||
|
||||
'''
|
||||
with pytest.raises(KeyboardInterrupt):
|
||||
trio.run(
|
||||
partial(
|
||||
spawn_and_check_registry,
|
||||
reg_addr,
|
||||
use_signal,
|
||||
remote_arbiter=False,
|
||||
with_streaming=with_streaming,
|
||||
),
|
||||
)
|
||||
|
||||
|
||||
@pytest.mark.parametrize('use_signal', [False, True])
|
||||
@pytest.mark.parametrize('with_streaming', [False, True])
|
||||
def test_subactors_unregister_on_cancel_remote_daemon(
|
||||
daemon,
|
||||
start_method,
|
||||
use_signal,
|
||||
reg_addr,
|
||||
with_streaming,
|
||||
):
|
||||
"""Verify that cancelling a nursery results in all subactors
|
||||
deregistering themselves with a **remote** (not in the local process
|
||||
tree) arbiter.
|
||||
"""
|
||||
with pytest.raises(KeyboardInterrupt):
|
||||
trio.run(
|
||||
partial(
|
||||
spawn_and_check_registry,
|
||||
reg_addr,
|
||||
use_signal,
|
||||
remote_arbiter=True,
|
||||
with_streaming=with_streaming,
|
||||
),
|
||||
)
|
||||
|
||||
|
||||
async def streamer(agen):
|
||||
async for item in agen:
|
||||
print(item)
|
||||
|
||||
|
||||
async def close_chans_before_nursery(
|
||||
reg_addr: tuple,
|
||||
use_signal: bool,
|
||||
remote_arbiter: bool = False,
|
||||
) -> None:
|
||||
|
||||
# logic for how many actors should still be
|
||||
# in the registry at teardown.
|
||||
if remote_arbiter:
|
||||
entries_at_end = 2
|
||||
else:
|
||||
entries_at_end = 1
|
||||
|
||||
async with tractor.open_root_actor(
|
||||
registry_addrs=[reg_addr],
|
||||
):
|
||||
async with tractor.get_registry(*reg_addr) as aportal:
|
||||
try:
|
||||
get_reg = partial(unpack_reg, aportal)
|
||||
|
||||
async with tractor.open_nursery() as tn:
|
||||
portal1 = await tn.start_actor(
|
||||
name='consumer1', enable_modules=[__name__])
|
||||
portal2 = await tn.start_actor(
|
||||
'consumer2', enable_modules=[__name__])
|
||||
|
||||
# TODO: compact this back as was in last commit once
|
||||
# 3.9+, see https://github.com/goodboy/tractor/issues/207
|
||||
async with portal1.open_stream_from(
|
||||
stream_forever
|
||||
) as agen1:
|
||||
async with portal2.open_stream_from(
|
||||
stream_forever
|
||||
) as agen2:
|
||||
async with trio.open_nursery(
|
||||
strict_exception_groups=False,
|
||||
) as n:
|
||||
n.start_soon(streamer, agen1)
|
||||
n.start_soon(cancel, use_signal, .5)
|
||||
try:
|
||||
await streamer(agen2)
|
||||
finally:
|
||||
# Kill the root nursery thus resulting in
|
||||
# normal arbiter channel ops to fail during
|
||||
# teardown. It doesn't seem like this is
|
||||
# reliably triggered by an external SIGINT.
|
||||
# tractor.current_actor()._root_nursery.cancel_scope.cancel()
|
||||
|
||||
# XXX: THIS IS THE KEY THING that
|
||||
# happens **before** exiting the
|
||||
# actor nursery block
|
||||
|
||||
# also kill off channels cuz why not
|
||||
await agen1.aclose()
|
||||
await agen2.aclose()
|
||||
finally:
|
||||
with trio.CancelScope(shield=True):
|
||||
await trio.sleep(1)
|
||||
|
||||
# all subactors should have de-registered
|
||||
registry = await get_reg()
|
||||
assert portal1.channel.uid not in registry
|
||||
assert portal2.channel.uid not in registry
|
||||
assert len(registry) == entries_at_end
|
||||
|
||||
|
||||
@pytest.mark.parametrize('use_signal', [False, True])
|
||||
def test_close_channel_explicit(
|
||||
start_method,
|
||||
use_signal,
|
||||
reg_addr,
|
||||
):
|
||||
"""Verify that closing a stream explicitly and killing the actor's
|
||||
"root nursery" **before** the containing nursery tears down also
|
||||
results in subactor(s) deregistering from the arbiter.
|
||||
"""
|
||||
with pytest.raises(KeyboardInterrupt):
|
||||
trio.run(
|
||||
partial(
|
||||
close_chans_before_nursery,
|
||||
reg_addr,
|
||||
use_signal,
|
||||
remote_arbiter=False,
|
||||
),
|
||||
)
|
||||
|
||||
|
||||
@pytest.mark.parametrize('use_signal', [False, True])
|
||||
def test_close_channel_explicit_remote_arbiter(
|
||||
daemon,
|
||||
start_method,
|
||||
use_signal,
|
||||
reg_addr,
|
||||
):
|
||||
"""Verify that closing a stream explicitly and killing the actor's
|
||||
"root nursery" **before** the containing nursery tears down also
|
||||
results in subactor(s) deregistering from the arbiter.
|
||||
"""
|
||||
with pytest.raises(KeyboardInterrupt):
|
||||
trio.run(
|
||||
partial(
|
||||
close_chans_before_nursery,
|
||||
reg_addr,
|
||||
use_signal,
|
||||
remote_arbiter=True,
|
||||
),
|
||||
)
|
||||
|
|
|
|||
|
|
@ -1,144 +0,0 @@
|
|||
'''
|
||||
Let's make sure them docs work yah?
|
||||
|
||||
'''
|
||||
from contextlib import contextmanager
|
||||
import itertools
|
||||
import os
|
||||
import sys
|
||||
import subprocess
|
||||
import platform
|
||||
import shutil
|
||||
|
||||
import pytest
|
||||
from tractor._testing import (
|
||||
examples_dir,
|
||||
)
|
||||
|
||||
|
||||
@pytest.fixture
|
||||
def run_example_in_subproc(
|
||||
loglevel: str,
|
||||
testdir: pytest.Pytester,
|
||||
reg_addr: tuple[str, int],
|
||||
):
|
||||
|
||||
@contextmanager
|
||||
def run(script_code):
|
||||
kwargs = dict()
|
||||
|
||||
if platform.system() == 'Windows':
|
||||
# on windows we need to create a special __main__.py which will
|
||||
# be executed with ``python -m <modulename>`` on windows..
|
||||
shutil.copyfile(
|
||||
examples_dir() / '__main__.py',
|
||||
str(testdir / '__main__.py'),
|
||||
)
|
||||
|
||||
# drop the ``if __name__ == '__main__'`` guard onwards from
|
||||
# the *NIX version of each script
|
||||
windows_script_lines = itertools.takewhile(
|
||||
lambda line: "if __name__ ==" not in line,
|
||||
script_code.splitlines()
|
||||
)
|
||||
script_code = '\n'.join(windows_script_lines)
|
||||
script_file = testdir.makefile('.py', script_code)
|
||||
|
||||
# without this, tests hang on windows forever
|
||||
kwargs['creationflags'] = subprocess.CREATE_NEW_PROCESS_GROUP
|
||||
|
||||
# run the testdir "libary module" as a script
|
||||
cmdargs = [
|
||||
sys.executable,
|
||||
'-m',
|
||||
# use the "module name" of this "package"
|
||||
'test_example'
|
||||
]
|
||||
else:
|
||||
script_file = testdir.makefile('.py', script_code)
|
||||
cmdargs = [
|
||||
sys.executable,
|
||||
str(script_file),
|
||||
]
|
||||
|
||||
# XXX: BE FOREVER WARNED: if you enable lots of tractor logging
|
||||
# in the subprocess it may cause infinite blocking on the pipes
|
||||
# due to backpressure!!!
|
||||
proc = testdir.popen(
|
||||
cmdargs,
|
||||
**kwargs,
|
||||
)
|
||||
assert not proc.returncode
|
||||
yield proc
|
||||
proc.wait()
|
||||
assert proc.returncode == 0
|
||||
|
||||
yield run
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'example_script',
|
||||
|
||||
# walk yields: (dirpath, dirnames, filenames)
|
||||
[
|
||||
(p[0], f)
|
||||
for p in os.walk(examples_dir())
|
||||
for f in p[2]
|
||||
|
||||
if (
|
||||
'__' not in f
|
||||
and f[0] != '_'
|
||||
and 'debugging' not in p[0]
|
||||
and 'integration' not in p[0]
|
||||
and 'advanced_faults' not in p[0]
|
||||
and 'multihost' not in p[0]
|
||||
)
|
||||
],
|
||||
ids=lambda t: t[1],
|
||||
)
|
||||
def test_example(
|
||||
run_example_in_subproc,
|
||||
example_script,
|
||||
):
|
||||
'''
|
||||
Load and run scripts from this repo's ``examples/`` dir as a user
|
||||
would copy and pasing them into their editor.
|
||||
|
||||
On windows a little more "finessing" is done to make
|
||||
``multiprocessing`` play nice: we copy the ``__main__.py`` into the
|
||||
test directory and invoke the script as a module with ``python -m
|
||||
test_example``.
|
||||
|
||||
'''
|
||||
ex_file: str = os.path.join(*example_script)
|
||||
|
||||
if 'rpc_bidir_streaming' in ex_file and sys.version_info < (3, 9):
|
||||
pytest.skip("2-way streaming example requires py3.9 async with syntax")
|
||||
|
||||
with open(ex_file, 'r') as ex:
|
||||
code = ex.read()
|
||||
|
||||
with run_example_in_subproc(code) as proc:
|
||||
proc.wait()
|
||||
err, _ = proc.stderr.read(), proc.stdout.read()
|
||||
# print(f'STDERR: {err}')
|
||||
# print(f'STDOUT: {out}')
|
||||
|
||||
# if we get some gnarly output let's aggregate and raise
|
||||
if err:
|
||||
errmsg = err.decode()
|
||||
errlines = errmsg.splitlines()
|
||||
last_error = errlines[-1]
|
||||
if (
|
||||
'Error' in last_error
|
||||
|
||||
# XXX: currently we print this to console, but maybe
|
||||
# shouldn't eventually once we figure out what's
|
||||
# a better way to be explicit about aio side
|
||||
# cancels?
|
||||
and
|
||||
'asyncio.exceptions.CancelledError' not in last_error
|
||||
):
|
||||
raise Exception(errmsg)
|
||||
|
||||
assert proc.returncode == 0
|
||||
|
|
@ -1,946 +0,0 @@
|
|||
'''
|
||||
Low-level functional audits for our
|
||||
"capability based messaging"-spec feats.
|
||||
|
||||
B~)
|
||||
|
||||
'''
|
||||
from contextlib import (
|
||||
contextmanager as cm,
|
||||
# nullcontext,
|
||||
)
|
||||
import importlib
|
||||
from typing import (
|
||||
Any,
|
||||
Type,
|
||||
Union,
|
||||
)
|
||||
|
||||
from msgspec import (
|
||||
# structs,
|
||||
# msgpack,
|
||||
Raw,
|
||||
# Struct,
|
||||
ValidationError,
|
||||
)
|
||||
import pytest
|
||||
import trio
|
||||
|
||||
import tractor
|
||||
from tractor import (
|
||||
Actor,
|
||||
# _state,
|
||||
MsgTypeError,
|
||||
Context,
|
||||
)
|
||||
from tractor.msg import (
|
||||
_codec,
|
||||
_ctxvar_MsgCodec,
|
||||
_exts,
|
||||
|
||||
NamespacePath,
|
||||
MsgCodec,
|
||||
MsgDec,
|
||||
mk_codec,
|
||||
mk_dec,
|
||||
apply_codec,
|
||||
current_codec,
|
||||
)
|
||||
from tractor.msg.types import (
|
||||
log,
|
||||
Started,
|
||||
# _payload_msgs,
|
||||
# PayloadMsg,
|
||||
# mk_msg_spec,
|
||||
)
|
||||
from tractor.msg._ops import (
|
||||
limit_plds,
|
||||
)
|
||||
|
||||
def enc_nsp(obj: Any) -> Any:
|
||||
actor: Actor = tractor.current_actor(
|
||||
err_on_no_runtime=False,
|
||||
)
|
||||
uid: tuple[str, str]|None = None if not actor else actor.uid
|
||||
print(f'{uid} ENC HOOK')
|
||||
|
||||
match obj:
|
||||
# case NamespacePath()|str():
|
||||
case NamespacePath():
|
||||
encoded: str = str(obj)
|
||||
print(
|
||||
f'----- ENCODING `NamespacePath` as `str` ------\n'
|
||||
f'|_obj:{type(obj)!r} = {obj!r}\n'
|
||||
f'|_encoded: str = {encoded!r}\n'
|
||||
)
|
||||
# if type(obj) != NamespacePath:
|
||||
# breakpoint()
|
||||
return encoded
|
||||
case _:
|
||||
logmsg: str = (
|
||||
f'{uid}\n'
|
||||
'FAILED ENCODE\n'
|
||||
f'obj-> `{obj}: {type(obj)}`\n'
|
||||
)
|
||||
raise NotImplementedError(logmsg)
|
||||
|
||||
|
||||
def dec_nsp(
|
||||
obj_type: Type,
|
||||
obj: Any,
|
||||
|
||||
) -> Any:
|
||||
# breakpoint()
|
||||
actor: Actor = tractor.current_actor(
|
||||
err_on_no_runtime=False,
|
||||
)
|
||||
uid: tuple[str, str]|None = None if not actor else actor.uid
|
||||
print(
|
||||
f'{uid}\n'
|
||||
'CUSTOM DECODE\n'
|
||||
f'type-arg-> {obj_type}\n'
|
||||
f'obj-arg-> `{obj}`: {type(obj)}\n'
|
||||
)
|
||||
nsp = None
|
||||
# XXX, never happens right?
|
||||
if obj_type is Raw:
|
||||
breakpoint()
|
||||
|
||||
if (
|
||||
obj_type is NamespacePath
|
||||
and isinstance(obj, str)
|
||||
and ':' in obj
|
||||
):
|
||||
nsp = NamespacePath(obj)
|
||||
# TODO: we could built a generic handler using
|
||||
# JUST matching the obj_type part?
|
||||
# nsp = obj_type(obj)
|
||||
|
||||
if nsp:
|
||||
print(f'Returning NSP instance: {nsp}')
|
||||
return nsp
|
||||
|
||||
logmsg: str = (
|
||||
f'{uid}\n'
|
||||
'FAILED DECODE\n'
|
||||
f'type-> {obj_type}\n'
|
||||
f'obj-arg-> `{obj}`: {type(obj)}\n\n'
|
||||
f'current codec:\n'
|
||||
f'{current_codec()}\n'
|
||||
)
|
||||
# TODO: figure out the ignore subsys for this!
|
||||
# -[ ] option whether to defense-relay backc the msg
|
||||
# inside an `Invalid`/`Ignore`
|
||||
# -[ ] how to make this handling pluggable such that a
|
||||
# `Channel`/`MsgTransport` can intercept and process
|
||||
# back msgs either via exception handling or some other
|
||||
# signal?
|
||||
log.warning(logmsg)
|
||||
# NOTE: this delivers the invalid
|
||||
# value up to `msgspec`'s decoding
|
||||
# machinery for error raising.
|
||||
return obj
|
||||
# raise NotImplementedError(logmsg)
|
||||
|
||||
|
||||
def ex_func(*args):
|
||||
'''
|
||||
A mod level func we can ref and load via our `NamespacePath`
|
||||
python-object pointer `str` subtype.
|
||||
|
||||
'''
|
||||
print(f'ex_func({args})')
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'add_codec_hooks',
|
||||
[
|
||||
True,
|
||||
False,
|
||||
],
|
||||
ids=['use_codec_hooks', 'no_codec_hooks'],
|
||||
)
|
||||
def test_custom_extension_types(
|
||||
debug_mode: bool,
|
||||
add_codec_hooks: bool
|
||||
):
|
||||
'''
|
||||
Verify that a `MsgCodec` (used for encoding all outbound IPC msgs
|
||||
and decoding all inbound `PayloadMsg`s) and a paired `MsgDec`
|
||||
(used for decoding the `PayloadMsg.pld: Raw` received within a given
|
||||
task's ipc `Context` scope) can both send and receive "extension types"
|
||||
as supported via custom converter hooks passed to `msgspec`.
|
||||
|
||||
'''
|
||||
nsp_pld_dec: MsgDec = mk_dec(
|
||||
spec=None, # ONLY support the ext type
|
||||
dec_hook=dec_nsp if add_codec_hooks else None,
|
||||
ext_types=[NamespacePath],
|
||||
)
|
||||
nsp_codec: MsgCodec = mk_codec(
|
||||
# ipc_pld_spec=Raw, # default!
|
||||
|
||||
# NOTE XXX: the encode hook MUST be used no matter what since
|
||||
# our `NamespacePath` is not any of a `Any` native type nor
|
||||
# a `msgspec.Struct` subtype - so `msgspec` has no way to know
|
||||
# how to encode it unless we provide the custom hook.
|
||||
#
|
||||
# AGAIN that is, regardless of whether we spec an
|
||||
# `Any`-decoded-pld the enc has no knowledge (by default)
|
||||
# how to enc `NamespacePath` (nsp), so we add a custom
|
||||
# hook to do that ALWAYS.
|
||||
enc_hook=enc_nsp if add_codec_hooks else None,
|
||||
|
||||
# XXX NOTE: pretty sure this is mutex with the `type=` to
|
||||
# `Decoder`? so it won't work in tandem with the
|
||||
# `ipc_pld_spec` passed above?
|
||||
ext_types=[NamespacePath],
|
||||
|
||||
# TODO? is it useful to have the `.pld` decoded *prior* to
|
||||
# the `PldRx`?? like perf or mem related?
|
||||
# ext_dec=nsp_pld_dec,
|
||||
)
|
||||
if add_codec_hooks:
|
||||
assert nsp_codec.dec.dec_hook is None
|
||||
|
||||
# TODO? if we pass `ext_dec` above?
|
||||
# assert nsp_codec.dec.dec_hook is dec_nsp
|
||||
|
||||
assert nsp_codec.enc.enc_hook is enc_nsp
|
||||
|
||||
nsp = NamespacePath.from_ref(ex_func)
|
||||
|
||||
try:
|
||||
nsp_bytes: bytes = nsp_codec.encode(nsp)
|
||||
nsp_rt_sin_msg = nsp_pld_dec.decode(nsp_bytes)
|
||||
nsp_rt_sin_msg.load_ref() is ex_func
|
||||
except TypeError:
|
||||
if not add_codec_hooks:
|
||||
pass
|
||||
|
||||
try:
|
||||
msg_bytes: bytes = nsp_codec.encode(
|
||||
Started(
|
||||
cid='cid',
|
||||
pld=nsp,
|
||||
)
|
||||
)
|
||||
# since the ext-type obj should also be set as the msg.pld
|
||||
assert nsp_bytes in msg_bytes
|
||||
started_rt: Started = nsp_codec.decode(msg_bytes)
|
||||
pld: Raw = started_rt.pld
|
||||
assert isinstance(pld, Raw)
|
||||
nsp_rt: NamespacePath = nsp_pld_dec.decode(pld)
|
||||
assert isinstance(nsp_rt, NamespacePath)
|
||||
# in obj comparison terms they should be the same
|
||||
assert nsp_rt == nsp
|
||||
# ensure we've decoded to ext type!
|
||||
assert nsp_rt.load_ref() is ex_func
|
||||
|
||||
except TypeError:
|
||||
if not add_codec_hooks:
|
||||
pass
|
||||
|
||||
@tractor.context
|
||||
async def sleep_forever_in_sub(
|
||||
ctx: Context,
|
||||
) -> None:
|
||||
await trio.sleep_forever()
|
||||
|
||||
|
||||
def mk_custom_codec(
|
||||
add_hooks: bool,
|
||||
|
||||
) -> tuple[
|
||||
MsgCodec, # encode to send
|
||||
MsgDec, # pld receive-n-decode
|
||||
]:
|
||||
'''
|
||||
Create custom `msgpack` enc/dec-hooks and set a `Decoder`
|
||||
which only loads `pld_spec` (like `NamespacePath`) types.
|
||||
|
||||
'''
|
||||
|
||||
# XXX NOTE XXX: despite defining `NamespacePath` as a type
|
||||
# field on our `PayloadMsg.pld`, we still need a enc/dec_hook() pair
|
||||
# to cast to/from that type on the wire. See the docs:
|
||||
# https://jcristharif.com/msgspec/extending.html#mapping-to-from-native-types
|
||||
|
||||
# if pld_spec is Any:
|
||||
# pld_spec = Raw
|
||||
|
||||
nsp_codec: MsgCodec = mk_codec(
|
||||
# ipc_pld_spec=Raw, # default!
|
||||
|
||||
# NOTE XXX: the encode hook MUST be used no matter what since
|
||||
# our `NamespacePath` is not any of a `Any` native type nor
|
||||
# a `msgspec.Struct` subtype - so `msgspec` has no way to know
|
||||
# how to encode it unless we provide the custom hook.
|
||||
#
|
||||
# AGAIN that is, regardless of whether we spec an
|
||||
# `Any`-decoded-pld the enc has no knowledge (by default)
|
||||
# how to enc `NamespacePath` (nsp), so we add a custom
|
||||
# hook to do that ALWAYS.
|
||||
enc_hook=enc_nsp if add_hooks else None,
|
||||
|
||||
# XXX NOTE: pretty sure this is mutex with the `type=` to
|
||||
# `Decoder`? so it won't work in tandem with the
|
||||
# `ipc_pld_spec` passed above?
|
||||
ext_types=[NamespacePath],
|
||||
)
|
||||
# dec_hook=dec_nsp if add_hooks else None,
|
||||
return nsp_codec
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'limit_plds_args',
|
||||
[
|
||||
(
|
||||
{'dec_hook': None, 'ext_types': None},
|
||||
None,
|
||||
),
|
||||
(
|
||||
{'dec_hook': dec_nsp, 'ext_types': None},
|
||||
TypeError,
|
||||
),
|
||||
(
|
||||
{'dec_hook': dec_nsp, 'ext_types': [NamespacePath]},
|
||||
None,
|
||||
),
|
||||
(
|
||||
{'dec_hook': dec_nsp, 'ext_types': [NamespacePath|None]},
|
||||
None,
|
||||
),
|
||||
],
|
||||
ids=[
|
||||
'no_hook_no_ext_types',
|
||||
'only_hook',
|
||||
'hook_and_ext_types',
|
||||
'hook_and_ext_types_w_null',
|
||||
]
|
||||
)
|
||||
def test_pld_limiting_usage(
|
||||
limit_plds_args: tuple[dict, Exception|None],
|
||||
):
|
||||
'''
|
||||
Verify `dec_hook()` and `ext_types` need to either both be
|
||||
provided or we raise a explanator type-error.
|
||||
|
||||
'''
|
||||
kwargs, maybe_err = limit_plds_args
|
||||
async def main():
|
||||
async with tractor.open_nursery() as an: # just to open runtime
|
||||
|
||||
# XXX SHOULD NEVER WORK outside an ipc ctx scope!
|
||||
try:
|
||||
with limit_plds(**kwargs):
|
||||
pass
|
||||
except RuntimeError:
|
||||
pass
|
||||
|
||||
p: tractor.Portal = await an.start_actor(
|
||||
'sub',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
async with (
|
||||
p.open_context(
|
||||
sleep_forever_in_sub
|
||||
) as (ctx, first),
|
||||
):
|
||||
try:
|
||||
with limit_plds(**kwargs):
|
||||
pass
|
||||
except maybe_err as exc:
|
||||
assert type(exc) is maybe_err
|
||||
pass
|
||||
|
||||
|
||||
def chk_codec_applied(
|
||||
expect_codec: MsgCodec|None,
|
||||
enter_value: MsgCodec|None = None,
|
||||
|
||||
) -> MsgCodec:
|
||||
'''
|
||||
buncha sanity checks ensuring that the IPC channel's
|
||||
context-vars are set to the expected codec and that are
|
||||
ctx-var wrapper APIs match the same.
|
||||
|
||||
'''
|
||||
# TODO: play with tricyle again, bc this is supposed to work
|
||||
# the way we want?
|
||||
#
|
||||
# TreeVar
|
||||
# task: trio.Task = trio.lowlevel.current_task()
|
||||
# curr_codec = _ctxvar_MsgCodec.get_in(task)
|
||||
|
||||
# ContextVar
|
||||
# task_ctx: Context = task.context
|
||||
# assert _ctxvar_MsgCodec in task_ctx
|
||||
# curr_codec: MsgCodec = task.context[_ctxvar_MsgCodec]
|
||||
if expect_codec is None:
|
||||
assert enter_value is None
|
||||
return
|
||||
|
||||
# NOTE: currently we use this!
|
||||
# RunVar
|
||||
curr_codec: MsgCodec = current_codec()
|
||||
last_read_codec = _ctxvar_MsgCodec.get()
|
||||
# assert curr_codec is last_read_codec
|
||||
|
||||
assert (
|
||||
(same_codec := expect_codec) is
|
||||
# returned from `mk_codec()`
|
||||
|
||||
# yielded value from `apply_codec()`
|
||||
|
||||
# read from current task's `contextvars.Context`
|
||||
curr_codec is
|
||||
last_read_codec
|
||||
|
||||
# the default `msgspec` settings
|
||||
is not _codec._def_msgspec_codec
|
||||
is not _codec._def_tractor_codec
|
||||
)
|
||||
|
||||
if enter_value:
|
||||
assert enter_value is same_codec
|
||||
|
||||
|
||||
@tractor.context
|
||||
async def send_back_values(
|
||||
ctx: Context,
|
||||
rent_pld_spec_type_strs: list[str],
|
||||
add_hooks: bool,
|
||||
|
||||
) -> None:
|
||||
'''
|
||||
Setup up a custom codec to load instances of `NamespacePath`
|
||||
and ensure we can round trip a func ref with our parent.
|
||||
|
||||
'''
|
||||
uid: tuple = tractor.current_actor().uid
|
||||
|
||||
# init state in sub-actor should be default
|
||||
chk_codec_applied(
|
||||
expect_codec=_codec._def_tractor_codec,
|
||||
)
|
||||
|
||||
# load pld spec from input str
|
||||
rent_pld_spec = _exts.dec_type_union(
|
||||
rent_pld_spec_type_strs,
|
||||
mods=[
|
||||
importlib.import_module(__name__),
|
||||
],
|
||||
)
|
||||
rent_pld_spec_types: set[Type] = _codec.unpack_spec_types(
|
||||
rent_pld_spec,
|
||||
)
|
||||
|
||||
# ONLY add ext-hooks if the rent specified a non-std type!
|
||||
add_hooks: bool = (
|
||||
NamespacePath in rent_pld_spec_types
|
||||
and
|
||||
add_hooks
|
||||
)
|
||||
|
||||
# same as on parent side config.
|
||||
nsp_codec: MsgCodec|None = None
|
||||
if add_hooks:
|
||||
nsp_codec = mk_codec(
|
||||
enc_hook=enc_nsp,
|
||||
ext_types=[NamespacePath],
|
||||
)
|
||||
|
||||
with (
|
||||
maybe_apply_codec(nsp_codec) as codec,
|
||||
limit_plds(
|
||||
rent_pld_spec,
|
||||
dec_hook=dec_nsp if add_hooks else None,
|
||||
ext_types=[NamespacePath] if add_hooks else None,
|
||||
) as pld_dec,
|
||||
):
|
||||
# ?XXX? SHOULD WE NOT be swapping the global codec since it
|
||||
# breaks `Context.started()` roundtripping checks??
|
||||
chk_codec_applied(
|
||||
expect_codec=nsp_codec,
|
||||
enter_value=codec,
|
||||
)
|
||||
|
||||
# ?TODO, mismatch case(s)?
|
||||
#
|
||||
# ensure pld spec matches on both sides
|
||||
ctx_pld_dec: MsgDec = ctx._pld_rx._pld_dec
|
||||
assert pld_dec is ctx_pld_dec
|
||||
child_pld_spec: Type = pld_dec.spec
|
||||
child_pld_spec_types: set[Type] = _codec.unpack_spec_types(
|
||||
child_pld_spec,
|
||||
)
|
||||
assert (
|
||||
child_pld_spec_types.issuperset(
|
||||
rent_pld_spec_types
|
||||
)
|
||||
)
|
||||
|
||||
# ?TODO, try loop for each of the types in pld-superset?
|
||||
#
|
||||
# for send_value in [
|
||||
# nsp,
|
||||
# str(nsp),
|
||||
# None,
|
||||
# ]:
|
||||
nsp = NamespacePath.from_ref(ex_func)
|
||||
try:
|
||||
print(
|
||||
f'{uid}: attempting to `.started({nsp})`\n'
|
||||
f'\n'
|
||||
f'rent_pld_spec: {rent_pld_spec}\n'
|
||||
f'child_pld_spec: {child_pld_spec}\n'
|
||||
f'codec: {codec}\n'
|
||||
)
|
||||
# await tractor.pause()
|
||||
await ctx.started(nsp)
|
||||
|
||||
except tractor.MsgTypeError as _mte:
|
||||
mte = _mte
|
||||
|
||||
# false -ve case
|
||||
if add_hooks:
|
||||
raise RuntimeError(
|
||||
f'EXPECTED to `.started()` value given spec ??\n\n'
|
||||
f'child_pld_spec -> {child_pld_spec}\n'
|
||||
f'value = {nsp}: {type(nsp)}\n'
|
||||
)
|
||||
|
||||
# true -ve case
|
||||
raise mte
|
||||
|
||||
# TODO: maybe we should add our own wrapper error so as to
|
||||
# be interchange-lib agnostic?
|
||||
# -[ ] the error type is wtv is raised from the hook so we
|
||||
# could also require a type-class of errors for
|
||||
# indicating whether the hook-failure can be handled by
|
||||
# a nasty-dialog-unprot sub-sys?
|
||||
except TypeError as typerr:
|
||||
# false -ve
|
||||
if add_hooks:
|
||||
raise RuntimeError('Should have been able to send `nsp`??')
|
||||
|
||||
# true -ve
|
||||
print('Failed to send `nsp` due to no ext hooks set!')
|
||||
raise typerr
|
||||
|
||||
# now try sending a set of valid and invalid plds to ensure
|
||||
# the pld spec is respected.
|
||||
sent: list[Any] = []
|
||||
async with ctx.open_stream() as ipc:
|
||||
print(
|
||||
f'{uid}: streaming all pld types to rent..'
|
||||
)
|
||||
|
||||
# for send_value, expect_send in iter_send_val_items:
|
||||
for send_value in [
|
||||
nsp,
|
||||
str(nsp),
|
||||
None,
|
||||
]:
|
||||
send_type: Type = type(send_value)
|
||||
print(
|
||||
f'{uid}: SENDING NEXT pld\n'
|
||||
f'send_type: {send_type}\n'
|
||||
f'send_value: {send_value}\n'
|
||||
)
|
||||
try:
|
||||
await ipc.send(send_value)
|
||||
sent.append(send_value)
|
||||
|
||||
except ValidationError as valerr:
|
||||
print(f'{uid} FAILED TO SEND {send_value}!')
|
||||
|
||||
# false -ve
|
||||
if add_hooks:
|
||||
raise RuntimeError(
|
||||
f'EXPECTED to roundtrip value given spec:\n'
|
||||
f'rent_pld_spec -> {rent_pld_spec}\n'
|
||||
f'child_pld_spec -> {child_pld_spec}\n'
|
||||
f'value = {send_value}: {send_type}\n'
|
||||
)
|
||||
|
||||
# true -ve
|
||||
raise valerr
|
||||
# continue
|
||||
|
||||
else:
|
||||
print(
|
||||
f'{uid}: finished sending all values\n'
|
||||
'Should be exiting stream block!\n'
|
||||
)
|
||||
|
||||
print(f'{uid}: exited streaming block!')
|
||||
|
||||
|
||||
|
||||
@cm
|
||||
def maybe_apply_codec(codec: MsgCodec|None) -> MsgCodec|None:
|
||||
if codec is None:
|
||||
yield None
|
||||
return
|
||||
|
||||
with apply_codec(codec) as codec:
|
||||
yield codec
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'pld_spec',
|
||||
[
|
||||
Any,
|
||||
NamespacePath,
|
||||
NamespacePath|None, # the "maybe" spec Bo
|
||||
],
|
||||
ids=[
|
||||
'any_type',
|
||||
'only_nsp_ext',
|
||||
'maybe_nsp_ext',
|
||||
]
|
||||
)
|
||||
@pytest.mark.parametrize(
|
||||
'add_hooks',
|
||||
[
|
||||
True,
|
||||
False,
|
||||
],
|
||||
ids=[
|
||||
'use_codec_hooks',
|
||||
'no_codec_hooks',
|
||||
],
|
||||
)
|
||||
def test_ext_types_over_ipc(
|
||||
debug_mode: bool,
|
||||
pld_spec: Union[Type],
|
||||
add_hooks: bool,
|
||||
):
|
||||
'''
|
||||
Ensure we can support extension types coverted using
|
||||
`enc/dec_hook()`s passed to the `.msg.limit_plds()` API
|
||||
and that sane errors happen when we try do the same without
|
||||
the codec hooks.
|
||||
|
||||
'''
|
||||
pld_types: set[Type] = _codec.unpack_spec_types(pld_spec)
|
||||
|
||||
async def main():
|
||||
|
||||
# sanity check the default pld-spec beforehand
|
||||
chk_codec_applied(
|
||||
expect_codec=_codec._def_tractor_codec,
|
||||
)
|
||||
|
||||
# extension type we want to send as msg payload
|
||||
nsp = NamespacePath.from_ref(ex_func)
|
||||
|
||||
# ^NOTE, 2 cases:
|
||||
# - codec hooks noto added -> decode nsp as `str`
|
||||
# - codec with hooks -> decode nsp as `NamespacePath`
|
||||
nsp_codec: MsgCodec|None = None
|
||||
if (
|
||||
NamespacePath in pld_types
|
||||
and
|
||||
add_hooks
|
||||
):
|
||||
nsp_codec = mk_codec(
|
||||
enc_hook=enc_nsp,
|
||||
ext_types=[NamespacePath],
|
||||
)
|
||||
|
||||
async with tractor.open_nursery(
|
||||
debug_mode=debug_mode,
|
||||
) as an:
|
||||
p: tractor.Portal = await an.start_actor(
|
||||
'sub',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
with (
|
||||
maybe_apply_codec(nsp_codec) as codec,
|
||||
):
|
||||
chk_codec_applied(
|
||||
expect_codec=nsp_codec,
|
||||
enter_value=codec,
|
||||
)
|
||||
rent_pld_spec_type_strs: list[str] = _exts.enc_type_union(pld_spec)
|
||||
|
||||
# XXX should raise an mte (`MsgTypeError`)
|
||||
# when `add_hooks == False` bc the input
|
||||
# `expect_ipc_send` kwarg has a nsp which can't be
|
||||
# serialized!
|
||||
#
|
||||
# TODO:can we ensure this happens from the
|
||||
# `Return`-side (aka the sub) as well?
|
||||
try:
|
||||
ctx: tractor.Context
|
||||
ipc: tractor.MsgStream
|
||||
async with (
|
||||
|
||||
# XXX should raise an mte (`MsgTypeError`)
|
||||
# when `add_hooks == False`..
|
||||
p.open_context(
|
||||
send_back_values,
|
||||
# expect_debug=debug_mode,
|
||||
rent_pld_spec_type_strs=rent_pld_spec_type_strs,
|
||||
add_hooks=add_hooks,
|
||||
# expect_ipc_send=expect_ipc_send,
|
||||
) as (ctx, first),
|
||||
|
||||
ctx.open_stream() as ipc,
|
||||
):
|
||||
with (
|
||||
limit_plds(
|
||||
pld_spec,
|
||||
dec_hook=dec_nsp if add_hooks else None,
|
||||
ext_types=[NamespacePath] if add_hooks else None,
|
||||
) as pld_dec,
|
||||
):
|
||||
ctx_pld_dec: MsgDec = ctx._pld_rx._pld_dec
|
||||
assert pld_dec is ctx_pld_dec
|
||||
|
||||
# if (
|
||||
# not add_hooks
|
||||
# and
|
||||
# NamespacePath in
|
||||
# ):
|
||||
# pytest.fail('ctx should fail to open without custom enc_hook!?')
|
||||
|
||||
await ipc.send(nsp)
|
||||
nsp_rt = await ipc.receive()
|
||||
|
||||
assert nsp_rt == nsp
|
||||
assert nsp_rt.load_ref() is ex_func
|
||||
|
||||
# this test passes bc we can go no further!
|
||||
except MsgTypeError as mte:
|
||||
# if not add_hooks:
|
||||
# # teardown nursery
|
||||
# await p.cancel_actor()
|
||||
# return
|
||||
|
||||
raise mte
|
||||
|
||||
await p.cancel_actor()
|
||||
|
||||
if (
|
||||
NamespacePath in pld_types
|
||||
and
|
||||
add_hooks
|
||||
):
|
||||
trio.run(main)
|
||||
|
||||
else:
|
||||
with pytest.raises(
|
||||
expected_exception=tractor.RemoteActorError,
|
||||
) as excinfo:
|
||||
trio.run(main)
|
||||
|
||||
exc = excinfo.value
|
||||
# bc `.started(nsp: NamespacePath)` will raise
|
||||
assert exc.boxed_type is TypeError
|
||||
|
||||
|
||||
# def chk_pld_type(
|
||||
# payload_spec: Type[Struct]|Any,
|
||||
# pld: Any,
|
||||
|
||||
# expect_roundtrip: bool|None = None,
|
||||
|
||||
# ) -> bool:
|
||||
|
||||
# pld_val_type: Type = type(pld)
|
||||
|
||||
# # TODO: verify that the overridden subtypes
|
||||
# # DO NOT have modified type-annots from original!
|
||||
# # 'Start', .pld: FuncSpec
|
||||
# # 'StartAck', .pld: IpcCtxSpec
|
||||
# # 'Stop', .pld: UNSEt
|
||||
# # 'Error', .pld: ErrorData
|
||||
|
||||
# codec: MsgCodec = mk_codec(
|
||||
# # NOTE: this ONLY accepts `PayloadMsg.pld` fields of a specified
|
||||
# # type union.
|
||||
# ipc_pld_spec=payload_spec,
|
||||
# )
|
||||
|
||||
# # make a one-off dec to compare with our `MsgCodec` instance
|
||||
# # which does the below `mk_msg_spec()` call internally
|
||||
# ipc_msg_spec: Union[Type[Struct]]
|
||||
# msg_types: list[PayloadMsg[payload_spec]]
|
||||
# (
|
||||
# ipc_msg_spec,
|
||||
# msg_types,
|
||||
# ) = mk_msg_spec(
|
||||
# payload_type_union=payload_spec,
|
||||
# )
|
||||
# _enc = msgpack.Encoder()
|
||||
# _dec = msgpack.Decoder(
|
||||
# type=ipc_msg_spec or Any, # like `PayloadMsg[Any]`
|
||||
# )
|
||||
|
||||
# assert (
|
||||
# payload_spec
|
||||
# ==
|
||||
# codec.pld_spec
|
||||
# )
|
||||
|
||||
# # assert codec.dec == dec
|
||||
# #
|
||||
# # ^-XXX-^ not sure why these aren't "equal" but when cast
|
||||
# # to `str` they seem to match ?? .. kk
|
||||
|
||||
# assert (
|
||||
# str(ipc_msg_spec)
|
||||
# ==
|
||||
# str(codec.msg_spec)
|
||||
# ==
|
||||
# str(_dec.type)
|
||||
# ==
|
||||
# str(codec.dec.type)
|
||||
# )
|
||||
|
||||
# # verify the boxed-type for all variable payload-type msgs.
|
||||
# if not msg_types:
|
||||
# breakpoint()
|
||||
|
||||
# roundtrip: bool|None = None
|
||||
# pld_spec_msg_names: list[str] = [
|
||||
# td.__name__ for td in _payload_msgs
|
||||
# ]
|
||||
# for typedef in msg_types:
|
||||
|
||||
# skip_runtime_msg: bool = typedef.__name__ not in pld_spec_msg_names
|
||||
# if skip_runtime_msg:
|
||||
# continue
|
||||
|
||||
# pld_field = structs.fields(typedef)[1]
|
||||
# assert pld_field.type is payload_spec # TODO-^ does this need to work to get all subtypes to adhere?
|
||||
|
||||
# kwargs: dict[str, Any] = {
|
||||
# 'cid': '666',
|
||||
# 'pld': pld,
|
||||
# }
|
||||
# enc_msg: PayloadMsg = typedef(**kwargs)
|
||||
|
||||
# _wire_bytes: bytes = _enc.encode(enc_msg)
|
||||
# wire_bytes: bytes = codec.enc.encode(enc_msg)
|
||||
# assert _wire_bytes == wire_bytes
|
||||
|
||||
# ve: ValidationError|None = None
|
||||
# try:
|
||||
# dec_msg = codec.dec.decode(wire_bytes)
|
||||
# _dec_msg = _dec.decode(wire_bytes)
|
||||
|
||||
# # decoded msg and thus payload should be exactly same!
|
||||
# assert (roundtrip := (
|
||||
# _dec_msg
|
||||
# ==
|
||||
# dec_msg
|
||||
# ==
|
||||
# enc_msg
|
||||
# ))
|
||||
|
||||
# if (
|
||||
# expect_roundtrip is not None
|
||||
# and expect_roundtrip != roundtrip
|
||||
# ):
|
||||
# breakpoint()
|
||||
|
||||
# assert (
|
||||
# pld
|
||||
# ==
|
||||
# dec_msg.pld
|
||||
# ==
|
||||
# enc_msg.pld
|
||||
# )
|
||||
# # assert (roundtrip := (_dec_msg == enc_msg))
|
||||
|
||||
# except ValidationError as _ve:
|
||||
# ve = _ve
|
||||
# roundtrip: bool = False
|
||||
# if pld_val_type is payload_spec:
|
||||
# raise ValueError(
|
||||
# 'Got `ValidationError` despite type-var match!?\n'
|
||||
# f'pld_val_type: {pld_val_type}\n'
|
||||
# f'payload_type: {payload_spec}\n'
|
||||
# ) from ve
|
||||
|
||||
# else:
|
||||
# # ow we good cuz the pld spec mismatched.
|
||||
# print(
|
||||
# 'Got expected `ValidationError` since,\n'
|
||||
# f'{pld_val_type} is not {payload_spec}\n'
|
||||
# )
|
||||
# else:
|
||||
# if (
|
||||
# payload_spec is not Any
|
||||
# and
|
||||
# pld_val_type is not payload_spec
|
||||
# ):
|
||||
# raise ValueError(
|
||||
# 'DID NOT `ValidationError` despite expected type match!?\n'
|
||||
# f'pld_val_type: {pld_val_type}\n'
|
||||
# f'payload_type: {payload_spec}\n'
|
||||
# )
|
||||
|
||||
# # full code decode should always be attempted!
|
||||
# if roundtrip is None:
|
||||
# breakpoint()
|
||||
|
||||
# return roundtrip
|
||||
|
||||
|
||||
# ?TODO? maybe remove since covered in the newer `test_pldrx_limiting`
|
||||
# via end-2-end testing of all this?
|
||||
# -[ ] IOW do we really NEED this lowlevel unit testing?
|
||||
#
|
||||
# def test_limit_msgspec(
|
||||
# debug_mode: bool,
|
||||
# ):
|
||||
# '''
|
||||
# Internals unit testing to verify that type-limiting an IPC ctx's
|
||||
# msg spec with `Pldrx.limit_plds()` results in various
|
||||
# encapsulated `msgspec` object settings and state.
|
||||
|
||||
# '''
|
||||
# async def main():
|
||||
# async with tractor.open_root_actor(
|
||||
# debug_mode=debug_mode,
|
||||
# ):
|
||||
# # ensure we can round-trip a boxing `PayloadMsg`
|
||||
# assert chk_pld_type(
|
||||
# payload_spec=Any,
|
||||
# pld=None,
|
||||
# expect_roundtrip=True,
|
||||
# )
|
||||
|
||||
# # verify that a mis-typed payload value won't decode
|
||||
# assert not chk_pld_type(
|
||||
# payload_spec=int,
|
||||
# pld='doggy',
|
||||
# )
|
||||
|
||||
# # parametrize the boxed `.pld` type as a custom-struct
|
||||
# # and ensure that parametrization propagates
|
||||
# # to all payload-msg-spec-able subtypes!
|
||||
# class CustomPayload(Struct):
|
||||
# name: str
|
||||
# value: Any
|
||||
|
||||
# assert not chk_pld_type(
|
||||
# payload_spec=CustomPayload,
|
||||
# pld='doggy',
|
||||
# )
|
||||
|
||||
# assert chk_pld_type(
|
||||
# payload_spec=CustomPayload,
|
||||
# pld=CustomPayload(name='doggy', value='urmom')
|
||||
# )
|
||||
|
||||
# # yah, we can `.pause_from_sync()` now!
|
||||
# # breakpoint()
|
||||
|
||||
# trio.run(main)
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
|
|
@ -1,355 +0,0 @@
|
|||
"""
|
||||
Streaming via async gen api
|
||||
"""
|
||||
import time
|
||||
from functools import partial
|
||||
import platform
|
||||
|
||||
import trio
|
||||
import tractor
|
||||
import pytest
|
||||
|
||||
from tractor._testing import tractor_test
|
||||
|
||||
|
||||
def test_must_define_ctx():
|
||||
|
||||
with pytest.raises(TypeError) as err:
|
||||
@tractor.stream
|
||||
async def no_ctx():
|
||||
pass
|
||||
|
||||
assert "no_ctx must be `ctx: tractor.Context" in str(err.value)
|
||||
|
||||
@tractor.stream
|
||||
async def has_ctx(ctx):
|
||||
pass
|
||||
|
||||
|
||||
async def async_gen_stream(sequence):
|
||||
for i in sequence:
|
||||
yield i
|
||||
await trio.sleep(0.1)
|
||||
|
||||
# block indefinitely waiting to be cancelled by ``aclose()`` call
|
||||
with trio.CancelScope() as cs:
|
||||
await trio.sleep_forever()
|
||||
assert 0
|
||||
assert cs.cancelled_caught
|
||||
|
||||
|
||||
# TODO: deprecated either remove entirely
|
||||
# or re-impl in terms of `MsgStream` one-sides
|
||||
# wrapper, but at least remove `Portal.open_stream_from()`
|
||||
@tractor.stream
|
||||
async def context_stream(
|
||||
ctx: tractor.Context,
|
||||
sequence: list[int],
|
||||
):
|
||||
for i in sequence:
|
||||
await ctx.send_yield(i)
|
||||
await trio.sleep(0.1)
|
||||
|
||||
# block indefinitely waiting to be cancelled by ``aclose()`` call
|
||||
with trio.CancelScope() as cs:
|
||||
await trio.sleep(float('inf'))
|
||||
assert 0
|
||||
assert cs.cancelled_caught
|
||||
|
||||
|
||||
async def stream_from_single_subactor(
|
||||
reg_addr,
|
||||
start_method,
|
||||
stream_func,
|
||||
):
|
||||
"""Verify we can spawn a daemon actor and retrieve streamed data.
|
||||
"""
|
||||
# only one per host address, spawns an actor if None
|
||||
|
||||
async with tractor.open_nursery(
|
||||
registry_addrs=[reg_addr],
|
||||
start_method=start_method,
|
||||
) as nursery:
|
||||
|
||||
async with tractor.find_actor('streamerd') as portals:
|
||||
|
||||
if not portals:
|
||||
|
||||
# no brokerd actor found
|
||||
portal = await nursery.start_actor(
|
||||
'streamerd',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
seq = range(10)
|
||||
|
||||
with trio.fail_after(5):
|
||||
async with portal.open_stream_from(
|
||||
stream_func,
|
||||
sequence=list(seq), # has to be msgpack serializable
|
||||
) as stream:
|
||||
|
||||
# it'd sure be nice to have an asyncitertools here...
|
||||
iseq = iter(seq)
|
||||
ival = next(iseq)
|
||||
|
||||
async for val in stream:
|
||||
assert val == ival
|
||||
|
||||
try:
|
||||
ival = next(iseq)
|
||||
except StopIteration:
|
||||
# should cancel far end task which will be
|
||||
# caught and no error is raised
|
||||
await stream.aclose()
|
||||
|
||||
await trio.sleep(0.3)
|
||||
|
||||
# ensure EOC signalled-state translates
|
||||
# XXX: not really sure this is correct,
|
||||
# shouldn't it be a `ClosedResourceError`?
|
||||
try:
|
||||
await stream.__anext__()
|
||||
except StopAsyncIteration:
|
||||
# stop all spawned subactors
|
||||
await portal.cancel_actor()
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'stream_func', [async_gen_stream, context_stream]
|
||||
)
|
||||
def test_stream_from_single_subactor(reg_addr, start_method, stream_func):
|
||||
"""Verify streaming from a spawned async generator.
|
||||
"""
|
||||
trio.run(
|
||||
partial(
|
||||
stream_from_single_subactor,
|
||||
reg_addr,
|
||||
start_method,
|
||||
stream_func=stream_func,
|
||||
),
|
||||
)
|
||||
|
||||
|
||||
# this is the first 2 actors, streamer_1 and streamer_2
|
||||
async def stream_data(seed):
|
||||
|
||||
for i in range(seed):
|
||||
|
||||
yield i
|
||||
|
||||
# trigger scheduler to simulate practical usage
|
||||
await trio.sleep(0.0001)
|
||||
|
||||
|
||||
# this is the third actor; the aggregator
|
||||
async def aggregate(seed):
|
||||
"""Ensure that the two streams we receive match but only stream
|
||||
a single set of values to the parent.
|
||||
"""
|
||||
async with tractor.open_nursery() as nursery:
|
||||
portals = []
|
||||
for i in range(1, 3):
|
||||
# fork point
|
||||
portal = await nursery.start_actor(
|
||||
name=f'streamer_{i}',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
portals.append(portal)
|
||||
|
||||
send_chan, recv_chan = trio.open_memory_channel(500)
|
||||
|
||||
async def push_to_chan(portal, send_chan):
|
||||
async with send_chan:
|
||||
|
||||
async with portal.open_stream_from(
|
||||
stream_data, seed=seed,
|
||||
) as stream:
|
||||
|
||||
async for value in stream:
|
||||
# leverage trio's built-in backpressure
|
||||
await send_chan.send(value)
|
||||
|
||||
print(f"FINISHED ITERATING {portal.channel.uid}")
|
||||
|
||||
# spawn 2 trio tasks to collect streams and push to a local queue
|
||||
async with trio.open_nursery() as n:
|
||||
|
||||
for portal in portals:
|
||||
n.start_soon(push_to_chan, portal, send_chan.clone())
|
||||
|
||||
# close this local task's reference to send side
|
||||
await send_chan.aclose()
|
||||
|
||||
unique_vals = set()
|
||||
async with recv_chan:
|
||||
async for value in recv_chan:
|
||||
if value not in unique_vals:
|
||||
unique_vals.add(value)
|
||||
# yield upwards to the spawning parent actor
|
||||
yield value
|
||||
|
||||
assert value in unique_vals
|
||||
|
||||
print("FINISHED ITERATING in aggregator")
|
||||
|
||||
await nursery.cancel()
|
||||
print("WAITING on `ActorNursery` to finish")
|
||||
print("AGGREGATOR COMPLETE!")
|
||||
|
||||
|
||||
# this is the main actor and *arbiter*
|
||||
async def a_quadruple_example():
|
||||
# a nursery which spawns "actors"
|
||||
async with tractor.open_nursery() as nursery:
|
||||
|
||||
seed = int(1e3)
|
||||
pre_start = time.time()
|
||||
|
||||
portal = await nursery.start_actor(
|
||||
name='aggregator',
|
||||
enable_modules=[__name__],
|
||||
)
|
||||
|
||||
start = time.time()
|
||||
# the portal call returns exactly what you'd expect
|
||||
# as if the remote "aggregate" function was called locally
|
||||
result_stream = []
|
||||
|
||||
async with portal.open_stream_from(aggregate, seed=seed) as stream:
|
||||
async for value in stream:
|
||||
result_stream.append(value)
|
||||
|
||||
print(f"STREAM TIME = {time.time() - start}")
|
||||
print(f"STREAM + SPAWN TIME = {time.time() - pre_start}")
|
||||
assert result_stream == list(range(seed))
|
||||
await portal.cancel_actor()
|
||||
return result_stream
|
||||
|
||||
|
||||
async def cancel_after(wait, reg_addr):
|
||||
async with tractor.open_root_actor(registry_addrs=[reg_addr]):
|
||||
with trio.move_on_after(wait):
|
||||
return await a_quadruple_example()
|
||||
|
||||
|
||||
@pytest.fixture(scope='module')
|
||||
def time_quad_ex(reg_addr, ci_env, spawn_backend):
|
||||
if spawn_backend == 'mp':
|
||||
"""no idea but the mp *nix runs are flaking out here often...
|
||||
"""
|
||||
pytest.skip("Test is too flaky on mp in CI")
|
||||
|
||||
timeout = 7 if platform.system() in ('Windows', 'Darwin') else 4
|
||||
start = time.time()
|
||||
results = trio.run(cancel_after, timeout, reg_addr)
|
||||
diff = time.time() - start
|
||||
assert results
|
||||
return results, diff
|
||||
|
||||
|
||||
def test_a_quadruple_example(time_quad_ex, ci_env, spawn_backend):
|
||||
"""This also serves as a kind of "we'd like to be this fast test"."""
|
||||
|
||||
results, diff = time_quad_ex
|
||||
assert results
|
||||
this_fast = 6 if platform.system() in ('Windows', 'Darwin') else 3
|
||||
assert diff < this_fast
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'cancel_delay',
|
||||
list(map(lambda i: i/10, range(3, 9)))
|
||||
)
|
||||
def test_not_fast_enough_quad(
|
||||
reg_addr, time_quad_ex, cancel_delay, ci_env, spawn_backend
|
||||
):
|
||||
"""Verify we can cancel midway through the quad example and all actors
|
||||
cancel gracefully.
|
||||
"""
|
||||
results, diff = time_quad_ex
|
||||
delay = max(diff - cancel_delay, 0)
|
||||
results = trio.run(cancel_after, delay, reg_addr)
|
||||
system = platform.system()
|
||||
if system in ('Windows', 'Darwin') and results is not None:
|
||||
# In CI envoirments it seems later runs are quicker then the first
|
||||
# so just ignore these
|
||||
print(f"Woa there {system} caught your breath eh?")
|
||||
else:
|
||||
# should be cancelled mid-streaming
|
||||
assert results is None
|
||||
|
||||
|
||||
@tractor_test
|
||||
async def test_respawn_consumer_task(
|
||||
reg_addr,
|
||||
spawn_backend,
|
||||
loglevel,
|
||||
):
|
||||
"""Verify that ``._portal.ReceiveStream.shield()``
|
||||
sucessfully protects the underlying IPC channel from being closed
|
||||
when cancelling and respawning a consumer task.
|
||||
|
||||
This also serves to verify that all values from the stream can be
|
||||
received despite the respawns.
|
||||
|
||||
"""
|
||||
stream = None
|
||||
|
||||
async with tractor.open_nursery() as n:
|
||||
|
||||
portal = await n.start_actor(
|
||||
name='streamer',
|
||||
enable_modules=[__name__]
|
||||
)
|
||||
async with portal.open_stream_from(
|
||||
stream_data,
|
||||
seed=11,
|
||||
) as stream:
|
||||
|
||||
expect = set(range(11))
|
||||
received = []
|
||||
|
||||
# this is the re-spawn task routine
|
||||
async def consume(task_status=trio.TASK_STATUS_IGNORED):
|
||||
print('starting consume task..')
|
||||
nonlocal stream
|
||||
|
||||
with trio.CancelScope() as cs:
|
||||
task_status.started(cs)
|
||||
|
||||
# shield stream's underlying channel from cancellation
|
||||
# with stream.shield():
|
||||
|
||||
async for v in stream:
|
||||
print(f'from stream: {v}')
|
||||
expect.remove(v)
|
||||
received.append(v)
|
||||
|
||||
print('exited consume')
|
||||
|
||||
async with trio.open_nursery() as ln:
|
||||
cs = await ln.start(consume)
|
||||
|
||||
while True:
|
||||
|
||||
await trio.sleep(0.1)
|
||||
|
||||
if received[-1] % 2 == 0:
|
||||
|
||||
print('cancelling consume task..')
|
||||
cs.cancel()
|
||||
|
||||
# respawn
|
||||
cs = await ln.start(consume)
|
||||
|
||||
if not expect:
|
||||
print("all values streamed, BREAKING")
|
||||
break
|
||||
|
||||
cs.cancel()
|
||||
|
||||
# TODO: this is justification for a
|
||||
# ``ActorNursery.stream_from_actor()`` helper?
|
||||
await portal.cancel_actor()
|
||||
|
|
@ -1,72 +0,0 @@
|
|||
"""
|
||||
Arbiter and "local" actor api
|
||||
"""
|
||||
import time
|
||||
|
||||
import pytest
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
from tractor._testing import tractor_test
|
||||
|
||||
|
||||
@pytest.mark.trio
|
||||
async def test_no_runtime():
|
||||
"""An arbitter must be established before any nurseries
|
||||
can be created.
|
||||
|
||||
(In other words ``tractor.open_root_actor()`` must be engaged at
|
||||
some point?)
|
||||
"""
|
||||
with pytest.raises(RuntimeError) :
|
||||
async with tractor.find_actor('doggy'):
|
||||
pass
|
||||
|
||||
|
||||
@tractor_test
|
||||
async def test_self_is_registered(reg_addr):
|
||||
"Verify waiting on the arbiter to register itself using the standard api."
|
||||
actor = tractor.current_actor()
|
||||
assert actor.is_arbiter
|
||||
with trio.fail_after(0.2):
|
||||
async with tractor.wait_for_actor('root') as portal:
|
||||
assert portal.channel.uid[0] == 'root'
|
||||
|
||||
|
||||
@tractor_test
|
||||
async def test_self_is_registered_localportal(reg_addr):
|
||||
"Verify waiting on the arbiter to register itself using a local portal."
|
||||
actor = tractor.current_actor()
|
||||
assert actor.is_arbiter
|
||||
async with tractor.get_registry(*reg_addr) as portal:
|
||||
assert isinstance(portal, tractor._portal.LocalPortal)
|
||||
|
||||
with trio.fail_after(0.2):
|
||||
sockaddr = await portal.run_from_ns(
|
||||
'self', 'wait_for_actor', name='root')
|
||||
assert sockaddr[0] == reg_addr
|
||||
|
||||
|
||||
def test_local_actor_async_func(reg_addr):
|
||||
"""Verify a simple async function in-process.
|
||||
"""
|
||||
nums = []
|
||||
|
||||
async def print_loop():
|
||||
|
||||
async with tractor.open_root_actor(
|
||||
registry_addrs=[reg_addr],
|
||||
):
|
||||
# arbiter is started in-proc if dne
|
||||
assert tractor.current_actor().is_arbiter
|
||||
|
||||
for i in range(10):
|
||||
nums.append(i)
|
||||
await trio.sleep(0.1)
|
||||
|
||||
start = time.time()
|
||||
trio.run(print_loop)
|
||||
|
||||
# ensure the sleeps were actually awaited
|
||||
assert time.time() - start >= 1
|
||||
assert nums == list(range(10))
|
||||
|
|
@ -1,68 +0,0 @@
|
|||
"""
|
||||
Multiple python programs invoking the runtime.
|
||||
"""
|
||||
import platform
|
||||
import time
|
||||
|
||||
import pytest
|
||||
import trio
|
||||
import tractor
|
||||
from tractor._testing import (
|
||||
tractor_test,
|
||||
)
|
||||
from .conftest import (
|
||||
sig_prog,
|
||||
_INT_SIGNAL,
|
||||
_INT_RETURN_CODE,
|
||||
)
|
||||
|
||||
|
||||
def test_abort_on_sigint(daemon):
|
||||
assert daemon.returncode is None
|
||||
time.sleep(0.1)
|
||||
sig_prog(daemon, _INT_SIGNAL)
|
||||
assert daemon.returncode == _INT_RETURN_CODE
|
||||
|
||||
# XXX: oddly, couldn't get capfd.readouterr() to work here?
|
||||
if platform.system() != 'Windows':
|
||||
# don't check stderr on windows as its empty when sending CTRL_C_EVENT
|
||||
assert "KeyboardInterrupt" in str(daemon.stderr.read())
|
||||
|
||||
|
||||
@tractor_test
|
||||
async def test_cancel_remote_arbiter(daemon, reg_addr):
|
||||
assert not tractor.current_actor().is_arbiter
|
||||
async with tractor.get_registry(*reg_addr) as portal:
|
||||
await portal.cancel_actor()
|
||||
|
||||
time.sleep(0.1)
|
||||
# the arbiter channel server is cancelled but not its main task
|
||||
assert daemon.returncode is None
|
||||
|
||||
# no arbiter socket should exist
|
||||
with pytest.raises(OSError):
|
||||
async with tractor.get_registry(*reg_addr) as portal:
|
||||
pass
|
||||
|
||||
|
||||
def test_register_duplicate_name(daemon, reg_addr):
|
||||
|
||||
async def main():
|
||||
|
||||
async with tractor.open_nursery(
|
||||
registry_addrs=[reg_addr],
|
||||
) as n:
|
||||
|
||||
assert not tractor.current_actor().is_arbiter
|
||||
|
||||
p1 = await n.start_actor('doggy')
|
||||
p2 = await n.start_actor('doggy')
|
||||
|
||||
async with tractor.wait_for_actor('doggy') as portal:
|
||||
assert portal.channel.uid in (p2.channel.uid, p1.channel.uid)
|
||||
|
||||
await n.cancel()
|
||||
|
||||
# run it manually since we want to start **after**
|
||||
# the other "daemon" program
|
||||
trio.run(main)
|
||||
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue