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Fix up leak. Add warnings.

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This commit is contained in:
Erik Johnston 2015-05-08 19:53:34 +01:00
parent da1aa07db5
commit 2236ef6c92
8 changed files with 69 additions and 48 deletions
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43
synapse/util/distributor.py
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@ -13,8 +13,6 @@
# 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
@ -93,7 +91,6 @@ 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
@ -101,24 +98,24 @@ class Signal(object):
Returns a Deferred that will complete when all the observers have
completed."""
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:
failure.raiseException()
deferreds.append(d.addErrback(eb))
results = []
for deferred in deferreds:
result = yield deferred
results.append(result)
defer.returnValue(results)
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:
failure.raiseException()
deferreds = [
defer.maybeDeferred(observer, *args, **kwargs)
for observer in self.observers
]
d = defer.gatherResults(deferreds, consumeErrors=True)
d.addErrback(eb)
return d