169 lines
4.1 KiB
Python
169 lines
4.1 KiB
Python
"""
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Spawning basics
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"""
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from typing import Optional
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import pytest
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import trio
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import tractor
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from conftest import tractor_test
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data_to_pass_down = {'doggy': 10, 'kitty': 4}
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async def spawn(
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is_arbiter: bool,
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data: dict,
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reg_addr: tuple[str, int],
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):
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namespaces = [__name__]
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await trio.sleep(0.1)
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async with tractor.open_root_actor(
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arbiter_addr=reg_addr,
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):
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actor = tractor.current_actor()
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assert actor.is_arbiter == is_arbiter
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data = data_to_pass_down
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if actor.is_arbiter:
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async with tractor.open_nursery(
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) as nursery:
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# forks here
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portal = await nursery.run_in_actor(
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spawn,
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is_arbiter=False,
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name='sub-actor',
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data=data,
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reg_addr=reg_addr,
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enable_modules=namespaces,
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)
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assert len(nursery._children) == 1
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assert portal.channel.uid in tractor.current_actor()._peers
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# be sure we can still get the result
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result = await portal.result()
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assert result == 10
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return result
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else:
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return 10
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def test_local_arbiter_subactor_global_state(reg_addr):
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result = trio.run(
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spawn,
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True,
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data_to_pass_down,
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reg_addr,
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)
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assert result == 10
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async def movie_theatre_question():
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"""A question asked in a dark theatre, in a tangent
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(errr, I mean different) process.
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"""
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return 'have you ever seen a portal?'
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@tractor_test
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async def test_movie_theatre_convo(start_method):
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"""The main ``tractor`` routine.
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"""
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async with tractor.open_nursery() as n:
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portal = await n.start_actor(
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'frank',
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# enable the actor to run funcs from this current module
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enable_modules=[__name__],
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)
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print(await portal.run(movie_theatre_question))
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# call the subactor a 2nd time
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print(await portal.run(movie_theatre_question))
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# the async with will block here indefinitely waiting
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# for our actor "frank" to complete, we cancel 'frank'
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# to avoid blocking indefinitely
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await portal.cancel_actor()
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async def cellar_door(return_value: Optional[str]):
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return return_value
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@pytest.mark.parametrize(
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'return_value', ["Dang that's beautiful", None],
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ids=['return_str', 'return_None'],
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)
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@tractor_test
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async def test_most_beautiful_word(
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start_method,
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return_value
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):
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'''
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The main ``tractor`` routine.
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'''
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with trio.fail_after(1):
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async with tractor.open_nursery() as n:
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portal = await n.run_in_actor(
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cellar_door,
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return_value=return_value,
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name='some_linguist',
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)
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print(await portal.result())
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# The ``async with`` will unblock here since the 'some_linguist'
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# actor has completed its main task ``cellar_door``.
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# this should pull the cached final result already captured during
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# the nursery block exit.
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print(await portal.result())
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async def check_loglevel(level):
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assert tractor.current_actor().loglevel == level
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log = tractor.log.get_logger()
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# XXX using a level actually used inside tractor seems to trigger
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# some kind of `logging` module bug FYI.
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log.critical('yoyoyo')
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def test_loglevel_propagated_to_subactor(
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start_method,
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capfd,
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reg_addr,
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):
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if start_method == 'mp_forkserver':
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pytest.skip(
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"a bug with `capfd` seems to make forkserver capture not work?")
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level = 'critical'
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async def main():
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async with tractor.open_nursery(
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name='arbiter',
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start_method=start_method,
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arbiter_addr=reg_addr,
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) as tn:
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await tn.run_in_actor(
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check_loglevel,
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loglevel=level,
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level=level,
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)
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trio.run(main)
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# ensure subactor spits log message on stderr
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captured = capfd.readouterr()
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assert 'yoyoyo' in captured.err
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