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Merge pull request #150 from matrix-org/notifier_unify
Make v1 and v2 client APIs interact with the notifier in the same way.
This commit is contained in:
Mark Haines
commit
4770cec7bc
@ -16,6 +16,7 @@
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from twisted.internet import defer
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from synapse.util.logutils import log_function
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from synapse.util.async import run_on_reactor
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from synapse.types import StreamToken
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import synapse.metrics
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@ -49,13 +50,9 @@ class _NotificationListener(object):
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so that it can remove itself from the indexes in the Notifier class.
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"""
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def __init__(self, user, rooms, from_token, limit, timeout, deferred,
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appservice=None):
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def __init__(self, user, rooms, deferred, appservice=None):
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self.user = user
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self.appservice = appservice
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self.from_token = from_token
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self.limit = limit
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self.timeout = timeout
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self.deferred = deferred
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self.rooms = rooms
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self.timer = None
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@ -63,17 +60,14 @@ class _NotificationListener(object):
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def notified(self):
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return self.deferred.called
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def notify(self, notifier, events, start_token, end_token):
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def notify(self, notifier):
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""" Inform whoever is listening about the new events. This will
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also remove this listener from all the indexes in the Notifier
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it knows about.
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"""
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result = (events, (start_token, end_token))
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try:
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self.deferred.callback(result)
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notified_events_counter.inc_by(len(events))
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self.deferred.callback(None)
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except defer.AlreadyCalledError:
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pass
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@ -160,6 +154,7 @@ class Notifier(object):
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listening to the room, and any listeners for the users in the
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`extra_users` param.
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"""
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yield run_on_reactor()
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# poke any interested application service.
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self.hs.get_handlers().appservice_handler.notify_interested_services(
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event
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@ -167,8 +162,6 @@ class Notifier(object):
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room_id = event.room_id
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room_source = self.event_sources.sources["room"]
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room_listeners = self.room_to_listeners.get(room_id, set())
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_discard_if_notified(room_listeners)
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@ -199,33 +192,11 @@ class Notifier(object):
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logger.debug("on_new_room_event listeners %s", listeners)
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# TODO (erikj): Can we make this more efficient by hitting the
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# db once?
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@defer.inlineCallbacks
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def notify(listener):
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events, end_key = yield room_source.get_new_events_for_user(
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listener.user,
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listener.from_token.room_key,
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listener.limit,
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)
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if events:
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end_token = listener.from_token.copy_and_replace(
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"room_key", end_key
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)
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listener.notify(
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self, events, listener.from_token, end_token
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)
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def eb(failure):
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logger.exception("Failed to notify listener", failure)
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yield defer.DeferredList(
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[notify(l).addErrback(eb) for l in listeners],
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consumeErrors=True,
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)
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for listener in listeners:
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try:
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listener.notify(self)
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except:
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logger.exception("Failed to notify listener")
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@defer.inlineCallbacks
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@log_function
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@ -235,11 +206,7 @@ class Notifier(object):
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Will wake up all listeners for the given users and rooms.
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"""
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# TODO(paul): This is horrible, having to manually list every event
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# source here individually
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presence_source = self.event_sources.sources["presence"]
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typing_source = self.event_sources.sources["typing"]
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yield run_on_reactor()
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listeners = set()
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for user in users:
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@ -256,68 +223,29 @@ class Notifier(object):
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listeners |= room_listeners
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@defer.inlineCallbacks
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def notify(listener):
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presence_events, presence_end_key = (
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yield presence_source.get_new_events_for_user(
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listener.user,
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listener.from_token.presence_key,
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listener.limit,
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)
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)
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typing_events, typing_end_key = (
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yield typing_source.get_new_events_for_user(
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listener.user,
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listener.from_token.typing_key,
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listener.limit,
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)
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)
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if presence_events or typing_events:
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end_token = listener.from_token.copy_and_replace(
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"presence_key", presence_end_key
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).copy_and_replace(
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"typing_key", typing_end_key
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)
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listener.notify(
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self,
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presence_events + typing_events,
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listener.from_token,
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end_token
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)
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def eb(failure):
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logger.error(
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"Failed to notify listener",
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exc_info=(
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failure.type,
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failure.value,
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failure.getTracebackObject())
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)
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yield defer.DeferredList(
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[notify(l).addErrback(eb) for l in listeners],
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consumeErrors=True,
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)
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for listener in listeners:
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try:
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listener.notify(self)
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except:
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logger.exception("Failed to notify listener")
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@defer.inlineCallbacks
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def wait_for_events(self, user, rooms, filter, timeout, callback):
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def wait_for_events(self, user, rooms, timeout, callback,
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from_token=StreamToken("s0", "0", "0")):
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"""Wait until the callback returns a non empty response or the
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timeout fires.
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"""
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deferred = defer.Deferred()
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from_token = StreamToken("s0", "0", "0")
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appservice = yield self.hs.get_datastore().get_app_service_by_user_id(
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user.to_string()
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)
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listener = [_NotificationListener(
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user=user,
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rooms=rooms,
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from_token=from_token,
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limit=1,
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timeout=timeout,
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deferred=deferred,
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appservice=appservice,
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)]
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if timeout:
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@ -332,7 +260,7 @@ class Notifier(object):
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def _timeout_listener():
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timed_out[0] = True
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timer[0] = None
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listener[0].notify(self, [], from_token, from_token)
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listener[0].notify(self)
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# We create multiple notification listeners so we have to manage
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# canceling the timeout ourselves.
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@ -344,10 +272,8 @@ class Notifier(object):
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listener[0] = _NotificationListener(
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user=user,
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rooms=rooms,
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from_token=from_token,
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limit=1,
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timeout=timeout,
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deferred=deferred,
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appservice=appservice,
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)
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self._register_with_keys(listener[0])
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result = yield callback()
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@ -360,65 +286,43 @@ class Notifier(object):
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defer.returnValue(result)
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@defer.inlineCallbacks
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def get_events_for(self, user, rooms, pagination_config, timeout):
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""" For the given user and rooms, return any new events for them. If
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there are no new events wait for up to `timeout` milliseconds for any
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new events to happen before returning.
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"""
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deferred = defer.Deferred()
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self._get_events(
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deferred, user, rooms, pagination_config.from_token,
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pagination_config.limit, timeout
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).addErrback(deferred.errback)
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return deferred
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@defer.inlineCallbacks
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def _get_events(self, deferred, user, rooms, from_token, limit, timeout):
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from_token = pagination_config.from_token
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if not from_token:
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from_token = yield self.event_sources.get_current_token()
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appservice = yield self.hs.get_datastore().get_app_service_by_user_id(
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user.to_string()
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)
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limit = pagination_config.limit
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listener = _NotificationListener(
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user,
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rooms,
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from_token,
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limit,
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timeout,
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deferred,
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appservice=appservice
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)
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def _timeout_listener():
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# TODO (erikj): We should probably set to_token to the current
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# max rather than reusing from_token.
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# Remove the timer from the listener so we don't try to cancel it.
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listener.timer = None
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listener.notify(
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self,
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[],
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listener.from_token,
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listener.from_token,
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)
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if timeout:
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self._register_with_keys(listener)
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yield self._check_for_updates(listener)
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if not timeout:
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_timeout_listener()
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else:
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# Only add the timer if the listener hasn't been notified
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if not listener.notified():
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listener.timer = self.clock.call_later(
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timeout/1000.0, _timeout_listener
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@defer.inlineCallbacks
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def check_for_updates():
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events = []
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end_token = from_token
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for name, source in self.event_sources.sources.items():
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keyname = "%s_key" % name
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stuff, new_key = yield source.get_new_events_for_user(
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user, getattr(from_token, keyname), limit,
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)
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return
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events.extend(stuff)
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end_token = end_token.copy_and_replace(keyname, new_key)
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if events:
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defer.returnValue((events, (from_token, end_token)))
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else:
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defer.returnValue(None)
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result = yield self.wait_for_events(
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user, rooms, timeout, check_for_updates, from_token=from_token
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)
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if result is None:
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result = ([], (from_token, from_token))
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defer.returnValue(result)
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@log_function
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def _register_with_keys(self, listener):
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@ -433,36 +337,6 @@ class Notifier(object):
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listener.appservice, set()
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).add(listener)
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@defer.inlineCallbacks
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@log_function
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def _check_for_updates(self, listener):
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# TODO (erikj): We need to think about limits across multiple sources
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events = []
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from_token = listener.from_token
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limit = listener.limit
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# TODO (erikj): DeferredList?
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for name, source in self.event_sources.sources.items():
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keyname = "%s_key" % name
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stuff, new_key = yield source.get_new_events_for_user(
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listener.user,
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getattr(from_token, keyname),
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limit,
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)
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events.extend(stuff)
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from_token = from_token.copy_and_replace(keyname, new_key)
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end_token = from_token
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if events:
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listener.notify(self, events, listener.from_token, end_token)
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defer.returnValue(listener)
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def _user_joined_room(self, user, room_id):
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new_listeners = self.user_to_listeners.get(user, set())
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