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https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-09-06 22:41:57 +00:00
Allow users that have left a room to get the messages that happend in the room before they left
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parent
3c166a24c5
commit
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@ -83,21 +83,44 @@ class MessageHandler(BaseHandler):
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Returns:
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dict: Pagination API results
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"""
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yield self.auth.check_joined_room(room_id, user_id)
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member_event = yield self.auth.check_user_was_in_room(room_id, user_id)
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data_source = self.hs.get_event_sources().sources["room"]
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if not pagin_config.from_token:
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if pagin_config.from_token:
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room_token = pagin_config.from_token.room_key
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else:
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pagin_config.from_token = (
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yield self.hs.get_event_sources().get_current_token(
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direction='b'
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)
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)
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room_token = pagin_config.from_token.room_key
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room_token = RoomStreamToken.parse(pagin_config.from_token.room_key)
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room_token = RoomStreamToken.parse(room_token)
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if room_token.topological is None:
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raise SynapseError(400, "Invalid token")
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pagin_config.from_token = pagin_config.from_token.copy_and_replace(
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"room_key", str(room_token)
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)
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source_config = pagin_config.get_source_config("room")
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if member_event.membership == Membership.LEAVE:
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# If they have left the room then clamp the token to be before
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# they left the room
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leave_token = yield self.store.get_topological_token_for_event(
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member_event.event_id
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)
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leave_token = RoomStreamToken.parse(leave_token)
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if leave_token.topological < room_token.topological:
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source_config.from_key = str(leave_token)
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if source_config.direction == "f":
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if source_config.to_key is None:
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source_config.to_key = str(leave_token)
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yield self.hs.get_handlers().federation_handler.maybe_backfill(
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room_id, room_token.topological
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)
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@ -105,7 +128,7 @@ class MessageHandler(BaseHandler):
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user = UserID.from_string(user_id)
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events, next_key = yield data_source.get_pagination_rows(
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user, pagin_config.get_source_config("room"), room_id
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user, source_config, room_id
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)
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next_token = pagin_config.from_token.copy_and_replace(
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@ -386,7 +386,24 @@ class StreamStore(SQLBaseStore):
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table="events",
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keyvalues={"event_id": event_id},
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retcol="stream_ordering",
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).addCallback(lambda stream_ordering: "s%d" % (stream_ordering,))
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).addCallback(lambda row: "s%d" % (row,))
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def get_topological_token_for_event(self, event_id):
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"""The stream token for an event
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Args:
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event_id(str): The id of the event to look up a stream token for.
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Raises:
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StoreError if the event wasn't in the database.
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Returns:
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A deferred "t%d-%d" topological token.
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"""
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return self._simple_select_one(
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table="events",
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keyvalues={"event_id": event_id},
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retcols=("stream_ordering", "topological_ordering"),
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).addCallback(lambda row: "t%d-%d" % (
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row["topological_ordering"], row["stream_ordering"],)
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)
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def _get_max_topological_txn(self, txn):
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txn.execute(
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