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Erik Johnston 2017-03-30 17:05:53 +01:00
parent b282fe7170
commit 5b5b171f3e
1 changed files with 5 additions and 0 deletions
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synapse/util/async.py
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@ -89,6 +89,11 @@ class ObservableDeferred(object):
deferred.addCallbacks(callback, errback) deferred.addCallbacks(callback, errback)
def observe(self): def observe(self):
"""Observe the underlying deferred.
Can return either a deferred if the underlying deferred is still pending
(or has failed), or the actual value. Callers may need to use maybeDeferred.
"""
if not self._result: if not self._result:
d = defer.Deferred() d = defer.Deferred()