diff options
Diffstat (limited to 'synapse/util/__init__.py')
-rw-r--r-- | synapse/util/__init__.py | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/synapse/util/__init__.py b/synapse/util/__init__.py index 680ea928c7..9a8fae0497 100644 --- a/synapse/util/__init__.py +++ b/synapse/util/__init__.py @@ -68,7 +68,10 @@ class Clock(object): """ call = task.LoopingCall(f) call.clock = self._reactor - call.start(msec / 1000.0, now=False) + d = call.start(msec / 1000.0, now=False) + d.addErrback( + log_failure, "Looping call died", consumeErrors=False, + ) return call def call_later(self, delay, callback, *args, **kwargs): @@ -109,3 +112,29 @@ def batch_iter(iterable, size): sourceiter = iter(iterable) # call islice until it returns an empty tuple return iter(lambda: tuple(islice(sourceiter, size)), ()) + + +def log_failure(failure, msg, consumeErrors=True): + """Creates a function suitable for passing to `Deferred.addErrback` that + logs any failures that occur. + + Args: + msg (str): Message to log + consumeErrors (bool): If true consumes the failure, otherwise passes + on down the callback chain + + Returns: + func(Failure) + """ + + logger.error( + msg, + exc_info=( + failure.type, + failure.value, + failure.getTracebackObject() + ) + ) + + if not consumeErrors: + return failure |