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synapse/tests/util/test_logcontext.py
Erik Johnston 23740eaa3d
Correctly mention previous copyright ()
During the migration the automated script to update the copyright
headers accidentally got rid of some of the existing copyright lines.
Reinstate them.
2024-01-23 11:26:48 +00:00

206 lines
6.9 KiB
Python

#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright 2014-2022 The Matrix.org Foundation C.I.C.
# Copyright (C) 2023 New Vector, Ltd
#
# 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 the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
from typing import Callable, Generator, cast
import twisted.python.failure
from twisted.internet import defer, reactor as _reactor
from synapse.logging.context import (
SENTINEL_CONTEXT,
LoggingContext,
PreserveLoggingContext,
current_context,
make_deferred_yieldable,
nested_logging_context,
run_in_background,
)
from synapse.types import ISynapseReactor
from synapse.util import Clock
from .. import unittest
reactor = cast(ISynapseReactor, _reactor)
class LoggingContextTestCase(unittest.TestCase):
def _check_test_key(self, value: str) -> None:
context = current_context()
assert isinstance(context, LoggingContext)
self.assertEqual(context.name, value)
def test_with_context(self) -> None:
with LoggingContext("test"):
self._check_test_key("test")
@defer.inlineCallbacks
def test_sleep(self) -> Generator["defer.Deferred[object]", object, None]:
clock = Clock(reactor)
@defer.inlineCallbacks
def competing_callback() -> Generator["defer.Deferred[object]", object, None]:
with LoggingContext("competing"):
yield clock.sleep(0)
self._check_test_key("competing")
reactor.callLater(0, competing_callback)
with LoggingContext("one"):
yield clock.sleep(0)
self._check_test_key("one")
def _test_run_in_background(self, function: Callable[[], object]) -> defer.Deferred:
sentinel_context = current_context()
callback_completed = False
with LoggingContext("one"):
# fire off function, but don't wait on it.
d2 = run_in_background(function)
def cb(res: object) -> object:
nonlocal callback_completed
callback_completed = True
return res
d2.addCallback(cb)
self._check_test_key("one")
# now wait for the function under test to have run, and check that
# the logcontext is left in a sane state.
d2 = defer.Deferred()
def check_logcontext() -> None:
if not callback_completed:
reactor.callLater(0.01, check_logcontext)
return
# make sure that the context was reset before it got thrown back
# into the reactor
try:
self.assertIs(current_context(), sentinel_context)
d2.callback(None)
except BaseException:
d2.errback(twisted.python.failure.Failure())
reactor.callLater(0.01, check_logcontext)
# test is done once d2 finishes
return d2
def test_run_in_background_with_blocking_fn(self) -> defer.Deferred:
@defer.inlineCallbacks
def blocking_function() -> Generator["defer.Deferred[object]", object, None]:
yield Clock(reactor).sleep(0)
return self._test_run_in_background(blocking_function)
def test_run_in_background_with_non_blocking_fn(self) -> defer.Deferred:
@defer.inlineCallbacks
def nonblocking_function() -> Generator["defer.Deferred[object]", object, None]:
with PreserveLoggingContext():
yield defer.succeed(None)
return self._test_run_in_background(nonblocking_function)
def test_run_in_background_with_chained_deferred(self) -> defer.Deferred:
# a function which returns a deferred which looks like it has been
# called, but is actually paused
def testfunc() -> defer.Deferred:
return make_deferred_yieldable(_chained_deferred_function())
return self._test_run_in_background(testfunc)
def test_run_in_background_with_coroutine(self) -> defer.Deferred:
async def testfunc() -> None:
self._check_test_key("one")
d = Clock(reactor).sleep(0)
self.assertIs(current_context(), SENTINEL_CONTEXT)
await d
self._check_test_key("one")
return self._test_run_in_background(testfunc)
def test_run_in_background_with_nonblocking_coroutine(self) -> defer.Deferred:
async def testfunc() -> None:
self._check_test_key("one")
return self._test_run_in_background(testfunc)
@defer.inlineCallbacks
def test_make_deferred_yieldable(
self,
) -> Generator["defer.Deferred[object]", object, None]:
# a function which returns an incomplete deferred, but doesn't follow
# the synapse rules.
def blocking_function() -> defer.Deferred:
d: defer.Deferred = defer.Deferred()
reactor.callLater(0, d.callback, None)
return d
sentinel_context = current_context()
with LoggingContext("one"):
d1 = make_deferred_yieldable(blocking_function())
# make sure that the context was reset by make_deferred_yieldable
self.assertIs(current_context(), sentinel_context)
yield d1
# now it should be restored
self._check_test_key("one")
@defer.inlineCallbacks
def test_make_deferred_yieldable_with_chained_deferreds(
self,
) -> Generator["defer.Deferred[object]", object, None]:
sentinel_context = current_context()
with LoggingContext("one"):
d1 = make_deferred_yieldable(_chained_deferred_function())
# make sure that the context was reset by make_deferred_yieldable
self.assertIs(current_context(), sentinel_context)
yield d1
# now it should be restored
self._check_test_key("one")
def test_nested_logging_context(self) -> None:
with LoggingContext("foo"):
nested_context = nested_logging_context(suffix="bar")
self.assertEqual(nested_context.name, "foo-bar")
# a function which returns a deferred which has been "called", but
# which had a function which returned another incomplete deferred on
# its callback list, so won't yet call any other new callbacks.
def _chained_deferred_function() -> defer.Deferred:
d = defer.succeed(None)
def cb(res: object) -> defer.Deferred:
d2: defer.Deferred = defer.Deferred()
reactor.callLater(0, d2.callback, res)
return d2
d.addCallback(cb)
return d