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Stop trying to fetch events with event_id=None. (#5753)

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`None` is not a valid event id, so queuing up a database fetch for it seems
like a silly thing to do.

I considered making `get_event` return `None` if `event_id is None`, but then
its interaction with `allow_none` seemed uninituitive, and strong typing ftw.
This commit is contained in:
Richard van der Hoff 2019-07-24 13:16:18 +01:00 • committed by GitHub
parent 418635e68a
commit f30a71a67b
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4 changed files with 23 additions and 11 deletions
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8
synapse/handlers/message.py
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@ -378,7 +378,11 @@ class EventCreationHandler(object):
# tolerate them in event_auth.check().
prev_state_ids = yield context.get_prev_state_ids(self.store)
prev_event_id = prev_state_ids.get((EventTypes.Member, event.sender))
prev_event = yield self.store.get_event(prev_event_id, allow_none=True)
prev_event = (
yield self.store.get_event(prev_event_id, allow_none=True)
if prev_event_id
else None
)
if not prev_event or prev_event.membership != Membership.JOIN:
logger.warning(
(
@ -521,6 +525,8 @@ class EventCreationHandler(object):
"""
prev_state_ids = yield context.get_prev_state_ids(self.store)
prev_event_id = prev_state_ids.get((event.type, event.state_key))
if not prev_event_id:
return
prev_event = yield self.store.get_event(prev_event_id, allow_none=True)
if not prev_event:
return