diff options
| -rw-r--r-- | synapse/logging/context.py | 9 | ||||
| -rw-r--r-- | tests/util/test_logcontext.py | 24 |
2 files changed, 32 insertions, 1 deletions
diff --git a/synapse/logging/context.py b/synapse/logging/context.py index 2c1fb9ddac..9f484ce59e 100644 --- a/synapse/logging/context.py +++ b/synapse/logging/context.py @@ -23,6 +23,7 @@ them. See doc/log_contexts.rst for details on how this works. """ +import inspect import logging import threading import types @@ -612,7 +613,8 @@ def run_in_background(f, *args, **kwargs): def make_deferred_yieldable(deferred): - """Given a deferred, make it follow the Synapse logcontext rules: + """Given a deferred (or coroutine), make it follow the Synapse logcontext + rules: If the deferred has completed (or is not actually a Deferred), essentially does nothing (just returns another completed deferred with the @@ -624,6 +626,11 @@ def make_deferred_yieldable(deferred): (This is more-or-less the opposite operation to run_in_background.) """ + if inspect.isawaitable(deferred): + # If we're given a coroutine we need to convert it to a deferred so that + # we can attach callbacks (and not immediately return). + deferred = defer.ensureDeferred(deferred) + if not isinstance(deferred, defer.Deferred): return deferred diff --git a/tests/util/test_logcontext.py b/tests/util/test_logcontext.py index 8b8455c8b7..281b32c4b8 100644 --- a/tests/util/test_logcontext.py +++ b/tests/util/test_logcontext.py @@ -179,6 +179,30 @@ class LoggingContextTestCase(unittest.TestCase): nested_context = nested_logging_context(suffix="bar") self.assertEqual(nested_context.request, "foo-bar") + @defer.inlineCallbacks + def test_make_deferred_yieldable_with_await(self): + # an async function which retuns an incomplete coroutine, but doesn't + # follow the synapse rules. + + async def blocking_function(): + d = defer.Deferred() + reactor.callLater(0, d.callback, None) + await d + + sentinel_context = LoggingContext.current_context() + + with LoggingContext() as context_one: + context_one.request = "one" + + d1 = make_deferred_yieldable(blocking_function()) + # make sure that the context was reset by make_deferred_yieldable + self.assertIs(LoggingContext.current_context(), sentinel_context) + + yield d1 + + # now it should be restored + self._check_test_key("one") + # a function which returns a deferred which has been "called", but # which had a function which returned another incomplete deferred on |