Update `._entry` actor status log
Log-report the different types of actor exit conditions including cancel via KBI, error or normal return with varying levels depending on case. Also, start proto-ing out this weird ascii-syntax idea for describing conc system states and implement the first bit in a `nest_from_op()` log-message fmter that joins and indents an obj `repr()` with a tree-like `'>)\n|_'` header.multihost_exs
Tyler Goodlet
parent
cb90f3e6ba
commit
4fbd469c33
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@ -20,7 +20,8 @@ Sub-process entry points.
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"""
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from __future__ import annotations
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from functools import partial
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# import textwrap
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import os
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import textwrap
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from typing import (
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Any,
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TYPE_CHECKING,
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@ -58,7 +59,7 @@ def _mp_main(
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) -> None:
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'''
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The routine called *after fork* which invokes a fresh ``trio.run``
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The routine called *after fork* which invokes a fresh `trio.run()`
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'''
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actor._forkserver_info = forkserver_info
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@ -96,6 +97,107 @@ def _mp_main(
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log.info(f"Subactor {actor.uid} terminated")
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# TODO: move this func to some kinda `.devx._conc_lang.py` eventually
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# as we work out our multi-domain state-flow-syntax!
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def nest_from_op(
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input_op: str,
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#
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# ?TODO? an idea for a syntax to the state of concurrent systems
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# as a "3-domain" (execution, scope, storage) model and using
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# a minimal ascii/utf-8 operator-set.
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#
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# try not to take any of this seriously yet XD
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#
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# > is a "play operator" indicating (CPU bound)
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# exec/work/ops required at the "lowest level computing"
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#
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# execution primititves (tasks, threads, actors..) denote their
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# lifetime with '(' and ')' since parentheses normally are used
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# in many langs to denote function calls.
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#
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# starting = (
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# >( opening/starting; beginning of the thread-of-exec (toe?)
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# (> opened/started, (finished spawning toe)
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# |_<Task: blah blah..> repr of toe, in py these look like <objs>
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#
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# >) closing/exiting/stopping,
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# )> closed/exited/stopped,
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# |_<Task: blah blah..>
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# [OR <), )< ?? ]
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#
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# ending = )
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# >c) cancelling to close/exit
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# c)> cancelled (caused close), OR?
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# |_<Actor: ..>
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# OR maybe "<c)" which better indicates the cancel being
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# "delivered/returned" / returned" to LHS?
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#
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# >x) erroring to eventuall exit
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# x)> errored and terminated
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# |_<Actor: ...>
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#
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# scopes: supers/nurseries, IPC-ctxs, sessions, perms, etc.
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# >{ opening
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# {> opened
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# }> closed
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# >} closing
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#
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# storage: like queues, shm-buffers, files, etc..
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# >[ opening
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# [> opened
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# |_<FileObj: ..>
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#
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# >] closing
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# ]> closed
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# IPC ops: channels, transports, msging
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# => req msg
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# <= resp msg
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# <=> 2-way streaming (of msgs)
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# <- recv 1 msg
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# -> send 1 msg
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#
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# TODO: still not sure on R/L-HS approach..?
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# =>( send-req to exec start (task, actor, thread..)
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# (<= recv-req to ^
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#
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# (<= recv-req ^
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# <=( recv-resp opened remote exec primitive
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# <=) recv-resp closed
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#
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# )<=c req to stop due to cancel
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# c=>) req to stop due to cancel
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#
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# =>{ recv-req to open
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# <={ send-status that it closed
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tree_str: str,
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# NOTE: so move back-from-the-left of the `input_op` by
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# this amount.
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back_from_op: int = 0,
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) -> str:
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'''
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Depth-increment the input (presumably hierarchy/supervision)
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input "tree string" below the provided `input_op` execution
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operator, so injecting a `"\n|_{input_op}\n"`and indenting the
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`tree_str` to nest content aligned with the ops last char.
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'''
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return (
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f'{input_op}\n'
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+
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textwrap.indent(
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tree_str,
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prefix=(
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len(input_op)
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-
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(back_from_op + 1)
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) * ' ',
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)
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)
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def _trio_main(
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actor: Actor,
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*,
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@ -107,7 +209,6 @@ def _trio_main(
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Entry point for a `trio_run_in_process` subactor.
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'''
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# __tracebackhide__: bool = True
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_debug.hide_runtime_frames()
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_state._current_actor = actor
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@ -119,7 +220,6 @@ def _trio_main(
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if actor.loglevel is not None:
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get_console_log(actor.loglevel)
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import os
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actor_info: str = (
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f'|_{actor}\n'
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f' uid: {actor.uid}\n'
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@ -128,13 +228,23 @@ def _trio_main(
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f' loglevel: {actor.loglevel}\n'
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)
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log.info(
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'Started new trio subactor:\n'
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'Starting new `trio` subactor:\n'
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+
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'>\n' # like a "started/play"-icon from super perspective
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+
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actor_info,
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nest_from_op(
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input_op='>(', # see syntax ideas above
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tree_str=actor_info,
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back_from_op=1,
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)
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)
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logmeth = log.info
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exit_status: str = (
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'Subactor exited\n'
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+
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nest_from_op(
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input_op=')>', # like a "closed-to-play"-icon from super perspective
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tree_str=actor_info,
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)
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)
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try:
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if infect_asyncio:
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actor._infected_aio = True
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@ -143,16 +253,28 @@ def _trio_main(
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trio.run(trio_main)
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except KeyboardInterrupt:
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log.cancel(
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'Actor received KBI\n'
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logmeth = log.cancel
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exit_status: str = (
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'Actor received KBI (aka an OS-cancel)\n'
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+
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actor_info
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nest_from_op(
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input_op='c)>', # closed due to cancel (see above)
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tree_str=actor_info,
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)
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)
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except BaseException as err:
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logmeth = log.error
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exit_status: str = (
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'Main actor task crashed during exit?\n'
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+
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nest_from_op(
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input_op='x)>', # closed by error
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tree_str=actor_info,
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)
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)
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# NOTE since we raise a tb will already be shown on the
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# console, thus we do NOT use `.exception()` above.
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raise err
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finally:
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log.info(
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'Subactor terminated\n'
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+
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'x\n' # like a "crossed-out/killed" from super perspective
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+
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actor_info
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)
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logmeth(exit_status)
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