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Factor _get_missing_events_for_pdu out of _handle_new_pdu

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This should be functionally identical: it just seeks to improve readability by
reducing indentation.
This commit is contained in:
Richard van der Hoff 2017-03-09 12:20:46 +00:00
parent 45d173a59a
commit 3406333a58
1 changed files with 82 additions and 62 deletions
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82
synapse/federation/federation_server.py
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@ -574,11 +574,60 @@ class FederationServer(FederationBase):
pdu.room_id, len(prevs - seen),
)
yield self._get_missing_events_for_pdu(
origin, pdu, prevs, min_depth
)
prevs = {e_id for e_id, _ in pdu.prev_events}
seen = set(have_seen.keys())
if prevs - seen:
logger.info(
"Still missing %d events for room %r: %r...",
len(prevs - seen), pdu.room_id, list(prevs - seen)[:5]
)
fetch_state = True
if fetch_state:
# We need to get the state at this event, since we haven't
# processed all the prev events.
logger.debug(
"_handle_new_pdu getting state for %s",
pdu.room_id
)
try:
state, auth_chain = yield self.get_state_for_room(
origin, pdu.room_id, pdu.event_id,
)
except:
logger.exception("Failed to get state for event: %s", pdu.event_id)
yield self.handler.on_receive_pdu(
origin,
pdu,
state=state,
auth_chain=auth_chain,
)
@defer.inlineCallbacks
def _get_missing_events_for_pdu(self, origin, pdu, prevs, min_depth):
"""
Args:
origin (str): Origin of the pdu. Will be called to get the missing events
pdu: received pdu
prevs (str[]): List of event ids which we are missing
min_depth (int): Minimum depth of events to return.
Returns:
Deferred<dict(str, str?)>: updated have_seen dictionary
"""
# We recalculate seen, since it may have changed.
have_seen = yield self.store.have_events(prevs)
seen = set(have_seen.keys())
if prevs - seen:
if not prevs - seen:
# nothing left to do
defer.returnValue(have_seen)
latest = yield self.store.get_latest_event_ids_in_room(
pdu.room_id
)
@ -636,36 +685,7 @@ class FederationServer(FederationBase):
have_seen = yield self.store.have_events(
[ev for ev, _ in pdu.prev_events]
)
prevs = {e_id for e_id, _ in pdu.prev_events}
seen = set(have_seen.keys())
if prevs - seen:
logger.info(
"Still missing %d events for room %r: %r...",
len(prevs - seen), pdu.room_id, list(prevs - seen)[:5]
)
fetch_state = True
if fetch_state:
# We need to get the state at this event, since we haven't
# processed all the prev events.
logger.debug(
"_handle_new_pdu getting state for %s",
pdu.room_id
)
try:
state, auth_chain = yield self.get_state_for_room(
origin, pdu.room_id, pdu.event_id,
)
except:
logger.exception("Failed to get state for event: %s", pdu.event_id)
yield self.handler.on_receive_pdu(
origin,
pdu,
state=state,
auth_chain=auth_chain,
)
defer.returnValue(have_seen)
def __str__(self):
return "<ReplicationLayer(%s)>" % self.server_name