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Do not send alias events when creating / upgrading a room (#6941)
Stop emitting room alias update events during room creation/upgrade.
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1
changelog.d/6941.removal
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1
changelog.d/6941.removal
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@ -0,0 +1 @@
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Stop sending m.room.aliases events during room creation and upgrade.
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@ -14,6 +14,7 @@
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# limitations under the License.
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import collections
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import logging
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import string
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from typing import List
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@ -282,22 +283,6 @@ class DirectoryHandler(BaseHandler):
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Codes.NOT_FOUND,
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)
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@defer.inlineCallbacks
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def send_room_alias_update_event(self, requester, room_id):
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aliases = yield self.store.get_aliases_for_room(room_id)
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yield self.event_creation_handler.create_and_send_nonmember_event(
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requester,
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{
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"type": EventTypes.Aliases,
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"state_key": self.hs.hostname,
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"room_id": room_id,
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"sender": requester.user.to_string(),
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"content": {"aliases": aliases},
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},
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ratelimit=False,
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)
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@defer.inlineCallbacks
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def _update_canonical_alias(self, requester, user_id, room_id, room_alias):
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"""
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@ -326,7 +311,7 @@ class DirectoryHandler(BaseHandler):
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alt_aliases = content.pop("alt_aliases", None)
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# If the aliases are not a list (or not found) do not attempt to modify
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# the list.
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if isinstance(alt_aliases, list):
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if isinstance(alt_aliases, collections.Sequence):
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send_update = True
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alt_aliases = [alias for alias in alt_aliases if alias != alias_str]
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if alt_aliases:
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@ -149,7 +149,9 @@ class RoomCreationHandler(BaseHandler):
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return ret
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@defer.inlineCallbacks
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def _upgrade_room(self, requester, old_room_id, new_version):
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def _upgrade_room(
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self, requester: Requester, old_room_id: str, new_version: RoomVersion
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):
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user_id = requester.user.to_string()
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# start by allocating a new room id
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@ -448,19 +450,21 @@ class RoomCreationHandler(BaseHandler):
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@defer.inlineCallbacks
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def _move_aliases_to_new_room(
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self, requester, old_room_id, new_room_id, old_room_state
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self,
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requester: Requester,
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old_room_id: str,
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new_room_id: str,
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old_room_state: StateMap[str],
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):
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directory_handler = self.hs.get_handlers().directory_handler
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aliases = yield self.store.get_aliases_for_room(old_room_id)
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# check to see if we have a canonical alias.
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canonical_alias = None
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canonical_alias_event = None
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canonical_alias_event_id = old_room_state.get((EventTypes.CanonicalAlias, ""))
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if canonical_alias_event_id:
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canonical_alias_event = yield self.store.get_event(canonical_alias_event_id)
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if canonical_alias_event:
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canonical_alias = canonical_alias_event.content.get("alias", "")
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# first we try to remove the aliases from the old room (we suppress sending
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# the room_aliases event until the end).
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@ -488,19 +492,6 @@ class RoomCreationHandler(BaseHandler):
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if not removed_aliases:
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return
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try:
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# this can fail if, for some reason, our user doesn't have perms to send
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# m.room.aliases events in the old room (note that we've already checked that
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# they have perms to send a tombstone event, so that's not terribly likely).
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#
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# If that happens, it's regrettable, but we should carry on: it's the same
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# as when you remove an alias from the directory normally - it just means that
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# the aliases event gets out of sync with the directory
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# (cf https://github.com/vector-im/riot-web/issues/2369)
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yield directory_handler.send_room_alias_update_event(requester, old_room_id)
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except AuthError as e:
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logger.warning("Failed to send updated alias event on old room: %s", e)
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# we can now add any aliases we successfully removed to the new room.
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for alias in removed_aliases:
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try:
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@ -517,8 +508,10 @@ class RoomCreationHandler(BaseHandler):
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# checking module decides it shouldn't, or similar.
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logger.error("Error adding alias %s to new room: %s", alias, e)
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# If a canonical alias event existed for the old room, fire a canonical
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# alias event for the new room with a copy of the information.
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try:
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if canonical_alias and (canonical_alias in removed_aliases):
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if canonical_alias_event:
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yield self.event_creation_handler.create_and_send_nonmember_event(
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requester,
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{
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@ -526,12 +519,10 @@ class RoomCreationHandler(BaseHandler):
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"state_key": "",
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"room_id": new_room_id,
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"sender": requester.user.to_string(),
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"content": {"alias": canonical_alias},
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"content": canonical_alias_event.content,
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},
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ratelimit=False,
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)
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yield directory_handler.send_room_alias_update_event(requester, new_room_id)
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except SynapseError as e:
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# again I'm not really expecting this to fail, but if it does, I'd rather
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# we returned the new room to the client at this point.
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@ -757,7 +748,6 @@ class RoomCreationHandler(BaseHandler):
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if room_alias:
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result["room_alias"] = room_alias.to_string()
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yield directory_handler.send_room_alias_update_event(requester, room_id)
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return result
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