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Fix background updates to handle redactions/rejections (#5352)

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* Fix background updates to handle redactions/rejections

In background updates based on current state delta stream we need to
handle that we may not have all the events (or at least that
`get_events` may raise an exception).
This commit is contained in:
Erik Johnston 2019-06-05 15:45:46 +01:00 • committed by Amber Brown
parent 95ab2eb4a1
commit 75538813fc
5 changed files with 117 additions and 12 deletions
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11
synapse/handlers/presence.py
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@ -828,14 +828,17 @@ class PresenceHandler(object):
# joins.
continue
event = yield self.store.get_event(event_id)
if event.content.get("membership") != Membership.JOIN:
event = yield self.store.get_event(event_id, allow_none=True)
if not event or event.content.get("membership") != Membership.JOIN:
# We only care about joins
continue
if prev_event_id:
prev_event = yield self.store.get_event(prev_event_id)
if prev_event.content.get("membership") == Membership.JOIN:
prev_event = yield self.store.get_event(prev_event_id, allow_none=True)
if (
prev_event
and prev_event.content.get("membership") == Membership.JOIN
):
# Ignore changes to join events.
continue