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tractor
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Lel, revert `AsyncioCancelled` inherit, module.. 

Turns out it somehow breaks our `to_asyncio` error relay since obvi
`asyncio`'s runtime seems to specially handle it (prolly via
`isinstance()` ?) and it caused our
`test_aio_cancelled_from_aio_causes_trio_cancelled()` to hang..
Further, obvi `unpack_error()` won't be able to find the type def if not
kept inside `._exceptions`..

So given all that, revert the change/move as well as:
- tweak the aio-from-aio cancel test to timeout.
- do `trio.sleep()` conc with any bg aio task by moving out nursery
  block.
- add a `send_sigint_to: str` parameter to
  `test_sigint_closes_lifetime_stack()` such that we test the SIGINT
  being relayed to just the parent or the child.
aio_abandons
Tyler Goodlet 2024-06-25 19:36:31 -04:00
parent a870df68c0
commit 4f1db1ff52
2 changed files with 64 additions and 16 deletions
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69
tests/test_infected_asyncio.py
View File

@ -289,23 +289,35 @@ async def aio_cancel():
'''
await asyncio.sleep(0.5)
task = asyncio.current_task()
# cancel and enter sleep
task = asyncio.current_task()
task.cancel()
await aio_sleep_forever()
def test_aio_cancelled_from_aio_causes_trio_cancelled(reg_addr):
'''
When the `asyncio.Task` cancels itself the `trio` side cshould
also cancel and teardown and relay the cancellation cross-process
to the caller (parent).
'''
async def main():
async with tractor.open_nursery() as n:
await n.run_in_actor(
an: tractor.ActorNursery
async with tractor.open_nursery() as an:
p: tractor.Portal = await an.run_in_actor(
asyncio_actor,
target='aio_cancel',
expect_err='tractor.to_asyncio.AsyncioCancelled',
infect_asyncio=True,
)
# NOTE: normally the `an.__aexit__()` waits on the
# portal's result but we do it explicitly here
# to avoid indent levels.
with trio.fail_after(1):
await p.wait_for_result()
with pytest.raises(
expected_exception=(RemoteActorError, ExceptionGroup),
@ -313,7 +325,7 @@ def test_aio_cancelled_from_aio_causes_trio_cancelled(reg_addr):
trio.run(main)
# might get multiple `trio.Cancelled`s as well inside an inception
err = excinfo.value
err: RemoteActorError|ExceptionGroup = excinfo.value
if isinstance(err, ExceptionGroup):
err = next(itertools.dropwhile(
lambda exc: not isinstance(exc, tractor.RemoteActorError),
@ -321,7 +333,8 @@ def test_aio_cancelled_from_aio_causes_trio_cancelled(reg_addr):
))
assert err
# ensure boxed error is correct
# relayed boxed error should be our `trio`-task's
# cancel-signal-proxy-equivalent of `asyncio.CancelledError`.
assert err.boxed_type == to_asyncio.AsyncioCancelled
@ -630,6 +643,7 @@ def test_echoserver_detailed_mechanics(
async def manage_file(
ctx: tractor.Context,
tmp_path_str: str,
send_sigint_to: str,
bg_aio_task: bool = False,
):
'''
@ -687,25 +701,39 @@ async def manage_file(
# honestly, this REALLY reminds me why i haven't used
# `asyncio` by choice in years.. XD
#
# await tractor.to_asyncio.run_task(aio_sleep_forever)
if bg_aio_task:
async with trio.open_nursery() as tn:
async with trio.open_nursery() as tn:
if bg_aio_task:
tn.start_soon(
tractor.to_asyncio.run_task,
aio_sleep_forever,
)
await trio.sleep_forever()
# XXX don't-need/doesn't-make-a-diff right
# since we're already doing it from parent?
# if send_sigint_to == 'child':
# os.kill(
# os.getpid(),
# signal.SIGINT,
# )
await trio.sleep_forever()
# signalled manually at the OS level (aka KBI) by the parent actor.
except KeyboardInterrupt:
print('child raised KBI..')
assert tmp_file.exists()
raise
else:
raise RuntimeError('shoulda received a KBI?')
raise RuntimeError('shoulda received a KBI?')
@pytest.mark.parametrize(
'send_sigint_to',
[
'child',
'parent',
],
ids='send_SIGINT_to={}'.format,
)
@pytest.mark.parametrize(
'bg_aio_task',
[
@ -740,6 +768,8 @@ def test_sigint_closes_lifetime_stack(
tmp_path: Path,
wait_for_ctx: bool,
bg_aio_task: bool,
debug_mode: bool,
send_sigint_to: str,
):
'''
Ensure that an infected child can use the `Actor.lifetime_stack`
@ -749,8 +779,11 @@ def test_sigint_closes_lifetime_stack(
'''
async def main():
try:
async with tractor.open_nursery() as n:
p = await n.start_actor(
an: tractor.ActorNursery
async with tractor.open_nursery(
debug_mode=debug_mode,
) as an:
p: tractor.Portal = await an.start_actor(
'file_mngr',
enable_modules=[__name__],
infect_asyncio=True,
@ -758,6 +791,7 @@ def test_sigint_closes_lifetime_stack(
async with p.open_context(
manage_file,
tmp_path_str=str(tmp_path),
send_sigint_to=send_sigint_to,
bg_aio_task=bg_aio_task,
) as (ctx, first):
@ -777,10 +811,13 @@ def test_sigint_closes_lifetime_stack(
# shm-buffer leaks in `piker`'s live quote stream
# susbys!
#
# await trio.sleep(.5)
await trio.sleep(.2)
pid: int = (
cpid if send_sigint_to == 'child'
else os.getpid()
)
os.kill(
cpid,
pid,
signal.SIGINT,
)
@ -790,7 +827,7 @@ def test_sigint_closes_lifetime_stack(
if wait_for_ctx:
print('waiting for ctx outcome in parent..')
try:
with trio.fail_after(.7):
with trio.fail_after(1):
await ctx.wait_for_result()
except tractor.ContextCancelled as ctxc:
assert ctxc.canceller == ctx.chan.uid

11
tractor/_exceptions.py
View File

@ -929,6 +929,17 @@ class MessagingError(Exception):
'''
class AsyncioCancelled(Exception):
'''
Asyncio cancelled translation (non-base) error
for use with the ``to_asyncio`` module
to be raised in the ``trio`` side task
NOTE: this should NOT inherit from `asyncio.CancelledError` or
tests should break!
'''
def pack_error(
exc: BaseException|RemoteActorError,