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README.rst
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tractor tractor
======= =======
An async-native "`actor model`_" built on trio_ and multiprocessing_. A `structured concurrent`_, async-native "`actor model`_" built on trio_ and multiprocessing_.
|travis| |docs|
|travis| .. toctree::
:maxdepth: 2
.. |travis| image:: https://img.shields.io/travis/goodboy/tractor/master.svg :caption: Contents:
:target: https://travis-ci.org/goodboy/tractor
.. _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 ``tractor`` is an attempt to bring trionic_ `structured concurrency`_ to
distributed multi-core Python. 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 ``tractor`` lets you spawn ``trio`` *"actors"*: processes which each run
a ``trio`` scheduled task tree (also known as an `async sandwich`_). a ``trio`` scheduled task tree (also known as an `async sandwich`_).
@ -23,44 +30,13 @@ many hosts.
The first step to grok ``tractor`` is to get the basics of ``trio`` down. 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`_. A great place to start is the `trio docs`_ and this `blog post`_.
.. _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
.. _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/
.. _messages: https://en.wikipedia.org/wiki/Message_passing .. _messages: https://en.wikipedia.org/wiki/Message_passing
.. _trio docs: https://trio.readthedocs.io/en/latest/ .. _trio docs: https://trio.readthedocs.io/en/latest/
.. _blog post: https://vorpus.org/blog/notes-on-structured-concurrency-or-go-statement-considered-harmful/ .. _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/ .. _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
Philosophy .. _async generators: https://www.python.org/dev/peps/pep-0525/
----------
``tractor`` aims to be the Python multi-processing framework *you always wanted*.
Its 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`_
.. 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
Install Install
@ -80,3 +56,12 @@ 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`_! say hi, please feel free to ping me on the `trio gitter channel`_!
.. _trio gitter channel: https://gitter.im/python-trio/general .. _trio gitter channel: https://gitter.im/python-trio/general
A `structured concurrent`_, async-native "`actor model`_" built on trio_ and multiprocessing_.
.. |travis| image:: https://img.shields.io/travis/goodboy/tractor/master.svg
:target: https://travis-ci.org/goodboy/tractor
.. |docs| image:: https://readthedocs.org/projects/tractor/badge/?version=latest
:target: https://tractor.readthedocs.io/en/latest/?badge=latest
:alt: Documentation Status

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docs/index.rst
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@ -16,12 +16,6 @@ A `structured concurrent`_, async-native "`actor model`_" built on trio_ and mul
.. _multiprocessing: https://en.wikipedia.org/wiki/Multiprocessing .. _multiprocessing: https://en.wikipedia.org/wiki/Multiprocessing
.. _trionic: https://trio.readthedocs.io/en/latest/design.html#high-level-design-principles .. _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 .. _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/
.. _structured concurrent: https://trio.discourse.group/t/concise-definition-of-structured-concurrency/228 .. _structured concurrent: https://trio.discourse.group/t/concise-definition-of-structured-concurrency/228
@ -43,9 +37,6 @@ A great place to start is the `trio docs`_ and this `blog post`_.
.. _trio docs: https://trio.readthedocs.io/en/latest/ .. _trio docs: https://trio.readthedocs.io/en/latest/
.. _blog post: https://vorpus.org/blog/notes-on-structured-concurrency-or-go-statement-considered-harmful/ .. _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/ .. _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 Install
@ -104,6 +95,15 @@ reactive style for IPC.
are greatly appreciated! are greatly appreciated!
.. _concept-in-progress: https://trio.discourse.group/t/structured-concurrency-kickoff/55 .. _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 Examples