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Handle the case of missing auth events when joining a room

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This commit is contained in:
Erik Johnston 2016-07-28 16:08:33 +01:00
parent 7861cfec0a
commit 1e2740caab
1 changed files with 23 additions and 4 deletions
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27
synapse/handlers/federation.py
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@ -124,7 +124,7 @@ class FederationHandler(BaseHandler):
try:
event_stream_id, max_stream_id = yield self._persist_auth_tree(
auth_chain, state, event
origin, auth_chain, state, event
)
except AuthError as e:
raise FederationError(
@ -637,7 +637,7 @@ class FederationHandler(BaseHandler):
pass
event_stream_id, max_stream_id = yield self._persist_auth_tree(
auth_chain, state, event
origin, auth_chain, state, event
)
with PreserveLoggingContext():
@ -1155,7 +1155,7 @@ class FederationHandler(BaseHandler):
)
@defer.inlineCallbacks
def _persist_auth_tree(self, auth_events, state, event):
def _persist_auth_tree(self, origin, auth_events, state, event):
"""Checks the auth chain is valid (and passes auth checks) for the
state and event. Then persists the auth chain and state atomically.
Persists the event seperately.
@ -1172,7 +1172,7 @@ class FederationHandler(BaseHandler):
event_map = {
e.event_id: e
for e in auth_events
for e in itertools.chain(auth_events, state, [event])
}
create_event = None
@ -1181,10 +1181,29 @@ class FederationHandler(BaseHandler):
create_event = e
break
missing_auth_events = set()
for e in itertools.chain(auth_events, state, [event]):
for e_id, _ in e.auth_events:
if e_id not in event_map:
missing_auth_events.add(e_id)
for e_id in missing_auth_events:
m_ev = yield self.replication_layer.get_pdu(
[origin],
e_id,
outlier=True,
timeout=10000,
)
if m_ev and m_ev.event_id == e_id:
event_map[e_id] = m_ev
else:
logger.info("Failed to find auth event %r", e_id)
for e in itertools.chain(auth_events, state, [event]):
auth_for_e = {
(event_map[e_id].type, event_map[e_id].state_key): event_map[e_id]
for e_id, _ in e.auth_events
if e_id in event_map
}
if create_event:
auth_for_e[(EventTypes.Create, "")] = create_event