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Use callbacks to notify tcp replication rather than deferreds

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This commit is contained in:
Erik Johnston 2017-03-31 13:36:38 +01:00
parent 36d2b66f90
commit 1df7c28661
2 changed files with 12 additions and 20 deletions
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17
synapse/notifier.py
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@ -163,6 +163,8 @@ class Notifier(object):
self.store = hs.get_datastore()
self.pending_new_room_events = []
self.replication_callbacks = []
self.clock = hs.get_clock()
self.appservice_handler = hs.get_application_service_handler()
@ -202,6 +204,12 @@ class Notifier(object):
lambda: len(self.user_to_user_stream),
)
def add_replication_callback(self, cb):
"""Add a callback that will be called when some new data is available.
Callback is not given any arguments.
"""
self.replication_callbacks.append(cb)
@preserve_fn
def on_new_room_event(self, event, room_stream_id, max_room_stream_id,
extra_users=[]):
@ -510,6 +518,9 @@ class Notifier(object):
self.replication_deferred = ObservableDeferred(defer.Deferred())
deferred.callback(None)
for cb in self.replication_callbacks:
preserve_fn(cb)()
@defer.inlineCallbacks
def wait_for_replication(self, callback, timeout):
"""Wait for an event to happen.
@ -550,9 +561,3 @@ class Notifier(object):
break
defer.returnValue(result)
def wait_once_for_replication(self):
"""Returns a deferred which resolves when there is new data for
replication to handle.
"""
return self.replication_deferred.observe()