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Merge pull request #4099 from matrix-org/rav/upgrade_odd_pls

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Better handling of odd PLs during room upgrades
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Richard van der Hoff 2018-10-29 12:48:51 +00:00 committed by GitHub
commit 56ca578f77
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2 changed files with 80 additions and 42 deletions
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1
changelog.d/4099.feature Normal file
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@ -0,0 +1 @@
Support for replacing rooms with new ones

51
synapse/handlers/room.py
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@ -136,7 +136,31 @@ class RoomCreationHandler(BaseHandler):
requester, tombstone_event, tombstone_context,
)
# and finally, shut down the PLs in the old room, and update them in the new
# room.
old_room_state = yield tombstone_context.get_current_state_ids(self.store)
yield self._update_upgraded_room_pls(
requester, old_room_id, new_room_id, old_room_state,
)
defer.returnValue(new_room_id)
@defer.inlineCallbacks
def _update_upgraded_room_pls(
self, requester, old_room_id, new_room_id, old_room_state,
):
"""Send updated power levels in both rooms after an upgrade
Args:
requester (synapse.types.Requester): the user requesting the upgrade
old_room_id (unicode): the id of the room to be replaced
new_room_id (unicode): the id of the replacement room
old_room_state (dict[tuple[str, str], str]): the state map for the old room
Returns:
Deferred
"""
old_room_pl_event_id = old_room_state.get((EventTypes.PowerLevels, ""))
if old_room_pl_event_id is None:
@ -144,13 +168,15 @@ class RoomCreationHandler(BaseHandler):
"Not supported: upgrading a room with no PL event. Not setting PLs "
"in old room.",
)
else:
return
old_room_pl_state = yield self.store.get_event(old_room_pl_event_id)
# we try to stop regular users from speaking by setting the PL required
# to send regular events and invites to 'Moderator' level. That's normally
# 50, but if the default PL in a room is 50 or more, then we set the
# required PL above that.
old_room_pl_state = yield self.store.get_event(old_room_pl_event_id)
pl_content = dict(old_room_pl_state.content)
users_default = int(pl_content.get("users_default", 0))
restricted_level = max(users_default + 1, 50)
@ -159,30 +185,42 @@ class RoomCreationHandler(BaseHandler):
for v in ("invite", "events_default"):
current = int(pl_content.get(v, 0))
if current < restricted_level:
logger.debug(
logger.info(
"Setting level for %s in %s to %i (was %i)",
v, old_room_id, restricted_level, current,
)
pl_content[v] = restricted_level
updated = True
else:
logger.debug(
logger.info(
"Not setting level for %s (already %i)",
v, current,
)
if updated:
try:
yield self.event_creation_handler.create_and_send_nonmember_event(
requester, {
"type": EventTypes.PowerLevels,
"state_key": '',
"room_id": old_room_id,
"sender": user_id,
"sender": requester.user.to_string(),
"content": pl_content,
}, ratelimit=False,
)
except AuthError as e:
logger.warning("Unable to update PLs in old room: %s", e)
defer.returnValue(new_room_id)
logger.info("Setting correct PLs in new room")
yield self.event_creation_handler.create_and_send_nonmember_event(
requester, {
"type": EventTypes.PowerLevels,
"state_key": '',
"room_id": new_room_id,
"sender": requester.user.to_string(),
"content": old_room_pl_state.content,
}, ratelimit=False,
)
@defer.inlineCallbacks
def clone_exiting_room(
@ -223,7 +261,6 @@ class RoomCreationHandler(BaseHandler):
initial_state = dict()
types_to_copy = (
(EventTypes.PowerLevels, ""),
(EventTypes.JoinRules, ""),
(EventTypes.Name, ""),
(EventTypes.Topic, ""),