Matrix-Mirrors/anonymousland-synapse
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Include state from remote servers in pdu handling

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If we've fetched state events from remote servers in order to resolve the state
for a new event, we need to actually pass those events into
resolve_events_with_factory (so that it can do the state res) and then persist
the ones we need - otherwise other bits of the codebase get confused about why
we have state groups pointing to non-existent events.
This commit is contained in:
Richard van der Hoff 2018-09-26 12:16:13 +01:00
parent a215b698c4
commit bd61c82bdf
1 changed files with 19 additions and 4 deletions
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23
synapse/handlers/federation.py
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@ -326,6 +326,9 @@ class FederationHandler(BaseHandler):
# Calculate the state of the previous events, and
# de-conflict them to find the current state.
auth_chains = set()
event_map = {
event_id: pdu,
}
try:
# Get the state of the events we know about
ours = yield self.store.get_state_groups_ids(room_id, seen)
@ -365,18 +368,30 @@ class FederationHandler(BaseHandler):
}
state_maps.append(remote_state_map)
for x in remote_state:
event_map[x.event_id] = x
# Resolve any conflicting state
@defer.inlineCallbacks
def fetch(ev_ids):
return self.store.get_events(
ev_ids, get_prev_content=False, check_redacted=False
fetched = yield self.store.get_events(
ev_ids, get_prev_content=False, check_redacted=False,
)
# add any events we fetch here to the `event_map` so that we
# can use them to build the state event list below.
event_map.update(fetched)
defer.returnValue(fetched)
room_version = yield self.store.get_room_version(room_id)
state_map = yield resolve_events_with_factory(
room_version, state_maps, {event_id: pdu}, fetch,
room_version, state_maps, event_map, fetch,
)
state = (yield self.store.get_events(state_map.values())).values()
# we need to give _process_received_pdu the actual state events
# rather than event ids, so generate that now.
state = [
event_map[e] for e in six.itervalues(state_map)
]
auth_chain = list(auth_chains)
except Exception:
logger.warn(