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Allow users that have left a room to get the messages that happend in the room before they left

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This commit is contained in:
Mark Haines 2015-09-09 17:31:09 +01:00
parent 3c166a24c5
commit 09cb5c7d33
2 changed files with 45 additions and 5 deletions
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31
synapse/handlers/message.py
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@ -83,21 +83,44 @@ class MessageHandler(BaseHandler):
Returns:
dict: Pagination API results
"""
yield self.auth.check_joined_room(room_id, user_id)
member_event = yield self.auth.check_user_was_in_room(room_id, user_id)
data_source = self.hs.get_event_sources().sources["room"]
if not pagin_config.from_token:
if pagin_config.from_token:
room_token = pagin_config.from_token.room_key
else:
pagin_config.from_token = (
yield self.hs.get_event_sources().get_current_token(
direction='b'
)
)
room_token = pagin_config.from_token.room_key
room_token = RoomStreamToken.parse(pagin_config.from_token.room_key)
room_token = RoomStreamToken.parse(room_token)
if room_token.topological is None:
raise SynapseError(400, "Invalid token")
pagin_config.from_token = pagin_config.from_token.copy_and_replace(
"room_key", str(room_token)
)
source_config = pagin_config.get_source_config("room")
if member_event.membership == Membership.LEAVE:
# If they have left the room then clamp the token to be before
# they left the room
leave_token = yield self.store.get_topological_token_for_event(
member_event.event_id
)
leave_token = RoomStreamToken.parse(leave_token)
if leave_token.topological < room_token.topological:
source_config.from_key = str(leave_token)
if source_config.direction == "f":
if source_config.to_key is None:
source_config.to_key = str(leave_token)
yield self.hs.get_handlers().federation_handler.maybe_backfill(
room_id, room_token.topological
)
@ -105,7 +128,7 @@ class MessageHandler(BaseHandler):
user = UserID.from_string(user_id)
events, next_key = yield data_source.get_pagination_rows(
user, pagin_config.get_source_config("room"), room_id
user, source_config, room_id
)
next_token = pagin_config.from_token.copy_and_replace(