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Add a few missing yields, Move deferred lists inside PreserveLoggingContext because they don't interact well with the logging contexts

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Mark Haines 2014-11-20 16:24:00 +00:00
parent 217950b9ad
commit 32090aee16
15 changed files with 105 additions and 83 deletions
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39
synapse/util/distributor.py
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@ -13,6 +13,8 @@
# See the License for the specific language governing permissions and
# limitations under the License.
from synapse.util.logcontext import PreserveLoggingContext
from twisted.internet import defer
import logging
@ -91,6 +93,7 @@ class Signal(object):
Each observer callable may return a Deferred."""
self.observers.append(observer)
@defer.inlineCallbacks
def fire(self, *args, **kwargs):
"""Invokes every callable in the observer list, passing in the args and
kwargs. Exceptions thrown by observers are logged but ignored. It is
@ -98,22 +101,24 @@ class Signal(object):
Returns a Deferred that will complete when all the observers have
completed."""
deferreds = []
for observer in self.observers:
d = defer.maybeDeferred(observer, *args, **kwargs)
with PreserveLoggingContext():
deferreds = []
for observer in self.observers:
d = defer.maybeDeferred(observer, *args, **kwargs)
def eb(failure):
logger.warning(
"%s signal observer %s failed: %r",
self.name, observer, failure,
exc_info=(
failure.type,
failure.value,
failure.getTracebackObject()))
if not self.suppress_failures:
raise failure
deferreds.append(d.addErrback(eb))
def eb(failure):
logger.warning(
"%s signal observer %s failed: %r",
self.name, observer, failure,
exc_info=(
failure.type,
failure.value,
failure.getTracebackObject()))
if not self.suppress_failures:
raise failure
deferreds.append(d.addErrback(eb))
return defer.DeferredList(
deferreds, fireOnOneErrback=not self.suppress_failures
)
result = yield defer.DeferredList(
deferreds, fireOnOneErrback=not self.suppress_failures
)
defer.returnValue(result)