From 76503f95ed2b618a3ff97c6b04868d8e440ef9d4 Mon Sep 17 00:00:00 2001 From: Mark Haines Date: Thu, 31 Mar 2016 15:00:42 +0100 Subject: [PATCH 1/2] Remove the is_new_state argument to persist event. Move the checks for whether an event is new state inside persist event itself. This was harder than expected because there wasn't enough information passed to persist event to correctly handle invites from remote servers for new rooms. --- synapse/events/__init__.py | 3 ++ synapse/handlers/federation.py | 20 ++------ synapse/storage/events.py | 88 +++++++++++++++++++--------------- 3 files changed, 56 insertions(+), 55 deletions(-) diff --git a/synapse/events/__init__.py b/synapse/events/__init__.py index 925a83c64..13154b172 100644 --- a/synapse/events/__init__.py +++ b/synapse/events/__init__.py @@ -33,6 +33,9 @@ class _EventInternalMetadata(object): def is_outlier(self): return getattr(self, "outlier", False) + def is_invite_from_remote(self): + return getattr(self, "invite_from_remote", False) + def _event_dict_property(key): def getter(self): diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index 267fedf11..4a35344d3 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -102,8 +102,7 @@ class FederationHandler(BaseHandler): @log_function @defer.inlineCallbacks - def on_receive_pdu(self, origin, pdu, state=None, - auth_chain=None): + def on_receive_pdu(self, origin, pdu, state=None, auth_chain=None): """ Called by the ReplicationLayer when we have a new pdu. We need to do auth checks and put it through the StateHandler. """ @@ -174,11 +173,7 @@ class FederationHandler(BaseHandler): }) seen_ids.add(e.event_id) - yield self._handle_new_events( - origin, - event_infos, - outliers=True - ) + yield self._handle_new_events(origin, event_infos) try: context, event_stream_id, max_stream_id = yield self._handle_new_event( @@ -761,6 +756,7 @@ class FederationHandler(BaseHandler): event = pdu event.internal_metadata.outlier = True + event.internal_metadata.invite_from_remote = True event.signatures.update( compute_event_signature( @@ -1069,9 +1065,6 @@ class FederationHandler(BaseHandler): @defer.inlineCallbacks @log_function def _handle_new_event(self, origin, event, state=None, auth_events=None): - - outlier = event.internal_metadata.is_outlier() - context = yield self._prep_event( origin, event, state=state, @@ -1087,14 +1080,12 @@ class FederationHandler(BaseHandler): event_stream_id, max_stream_id = yield self.store.persist_event( event, context=context, - is_new_state=not outlier, ) defer.returnValue((context, event_stream_id, max_stream_id)) @defer.inlineCallbacks - def _handle_new_events(self, origin, event_infos, backfilled=False, - outliers=False): + def _handle_new_events(self, origin, event_infos, backfilled=False): contexts = yield defer.gatherResults( [ self._prep_event( @@ -1113,7 +1104,6 @@ class FederationHandler(BaseHandler): for ev_info, context in itertools.izip(event_infos, contexts) ], backfilled=backfilled, - is_new_state=(not outliers and not backfilled), ) @defer.inlineCallbacks @@ -1176,7 +1166,6 @@ class FederationHandler(BaseHandler): (e, events_to_context[e.event_id]) for e in itertools.chain(auth_events, state) ], - is_new_state=False, ) new_event_context = yield self.state_handler.compute_event_context( @@ -1185,7 +1174,6 @@ class FederationHandler(BaseHandler): event_stream_id, max_stream_id = yield self.store.persist_event( event, new_event_context, - is_new_state=True, current_state=state, ) diff --git a/synapse/storage/events.py b/synapse/storage/events.py index dc3e994de..b5f9b3b90 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -61,8 +61,7 @@ class EventsStore(SQLBaseStore): ) @defer.inlineCallbacks - def persist_events(self, events_and_contexts, backfilled=False, - is_new_state=True): + def persist_events(self, events_and_contexts, backfilled=False): if not events_and_contexts: return @@ -110,13 +109,11 @@ class EventsStore(SQLBaseStore): self._persist_events_txn, events_and_contexts=chunk, backfilled=backfilled, - is_new_state=is_new_state, ) @defer.inlineCallbacks @log_function - def persist_event(self, event, context, - is_new_state=True, current_state=None): + def persist_event(self, event, context, current_state=None): try: with self._stream_id_gen.get_next() as stream_ordering: @@ -128,7 +125,6 @@ class EventsStore(SQLBaseStore): self._persist_event_txn, event=event, context=context, - is_new_state=is_new_state, current_state=current_state, ) except _RollbackButIsFineException: @@ -194,8 +190,7 @@ class EventsStore(SQLBaseStore): defer.returnValue({e.event_id: e for e in events}) @log_function - def _persist_event_txn(self, txn, event, context, - is_new_state, current_state): + def _persist_event_txn(self, txn, event, context, current_state): # We purposefully do this first since if we include a `current_state` # key, we *want* to update the `current_state_events` table if current_state: @@ -236,12 +231,10 @@ class EventsStore(SQLBaseStore): txn, [(event, context)], backfilled=False, - is_new_state=is_new_state, ) @log_function - def _persist_events_txn(self, txn, events_and_contexts, backfilled, - is_new_state): + def _persist_events_txn(self, txn, events_and_contexts, backfilled): depth_updates = {} for event, context in events_and_contexts: # Remove the any existing cache entries for the event_ids @@ -452,10 +445,9 @@ class EventsStore(SQLBaseStore): txn, [event for event, _ in events_and_contexts] ) - state_events_and_contexts = filter( - lambda i: i[0].is_state(), - events_and_contexts, - ) + state_events_and_contexts = [ + ec for ec in events_and_contexts if ec[0].is_state() + ] state_values = [] for event, context in state_events_and_contexts: @@ -493,32 +485,50 @@ class EventsStore(SQLBaseStore): ], ) - if is_new_state: - for event, _ in state_events_and_contexts: - if not context.rejected: - txn.call_after( - self._get_current_state_for_key.invalidate, - (event.room_id, event.type, event.state_key,) - ) + for event, _ in state_events_and_contexts: + if backfilled: + # Backfilled events come before the current state so shouldn't + # clobber it. + continue - if event.type in [EventTypes.Name, EventTypes.Aliases]: - txn.call_after( - self.get_room_name_and_aliases.invalidate, - (event.room_id,) - ) + if (not event.internal_metadata.is_invite_from_remote() + and event.internal_metadata.is_outlier()): + # Outlier events generally shouldn't clobber the current state. + # However invites from remote severs for rooms we aren't in + # are a bit special: they don't come with any associated + # state so are technically an outlier, however all the + # client-facing code assumes that they are in the current + # state table so we insert the event anyway. + continue - self._simple_upsert_txn( - txn, - "current_state_events", - keyvalues={ - "room_id": event.room_id, - "type": event.type, - "state_key": event.state_key, - }, - values={ - "event_id": event.event_id, - } - ) + if context.rejected: + # If the event failed it's auth checks then it shouldn't + # clobbler the current state. + continue + + txn.call_after( + self._get_current_state_for_key.invalidate, + (event.room_id, event.type, event.state_key,) + ) + + if event.type in [EventTypes.Name, EventTypes.Aliases]: + txn.call_after( + self.get_room_name_and_aliases.invalidate, + (event.room_id,) + ) + + self._simple_upsert_txn( + txn, + "current_state_events", + keyvalues={ + "room_id": event.room_id, + "type": event.type, + "state_key": event.state_key, + }, + values={ + "event_id": event.event_id, + } + ) return From 5d069291696c62c94d795506dd5a22a3dbd019e1 Mon Sep 17 00:00:00 2001 From: Mark Haines Date: Thu, 31 Mar 2016 15:09:09 +0100 Subject: [PATCH 2/2] Move the check for backfilled outside the for loop --- synapse/storage/events.py | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/synapse/storage/events.py b/synapse/storage/events.py index b5f9b3b90..83279d65f 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -485,12 +485,12 @@ class EventsStore(SQLBaseStore): ], ) - for event, _ in state_events_and_contexts: - if backfilled: - # Backfilled events come before the current state so shouldn't - # clobber it. - continue + if backfilled: + # Backfilled events come before the current state so we don't need + # to update the current state table + return + for event, _ in state_events_and_contexts: if (not event.internal_metadata.is_invite_from_remote() and event.internal_metadata.is_outlier()): # Outlier events generally shouldn't clobber the current state.