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Search for messages across predecessor rooms

Signed-off-by: Andrew Morgan <andrew@amorgan.xyz>
This commit is contained in:
Andrew Morgan 2019-01-18 10:04:47 +00:00
parent 9feb5d0b71
commit df3a661e4a
3 changed files with 73 additions and 0 deletions

View file

@ -444,6 +444,9 @@ class Filter(object):
def include_redundant_members(self):
return self.filter_json.get("include_redundant_members", False)
def add_room_ids(self, room_ids):
self.rooms += room_ids
def _matches_wildcard(actual_value, filter_value):
if filter_value.endswith("*"):

View file

@ -37,6 +37,54 @@ class SearchHandler(BaseHandler):
def __init__(self, hs):
super(SearchHandler, self).__init__(hs)
@defer.inlineCallbacks
def get_old_rooms_from_upgraded_room(self, room_id):
"""Retrieves room IDs of old rooms in the history of an upgraded room.
We do so by checking the m.room.create event of the room for a
`predecessor` key. If it exists, we add the room ID to our return
list and then check that room for a m.room.create event and so on
until we can no longer find any more previous rooms.
The full list of all found rooms in then returned.
Args:
room_id (str): The ID of the room to search through.
Returns:
dict of past room IDs as strings
"""
historical_room_ids = []
while True:
state_ids = yield self.store.get_current_state_ids(room_id)
create_id = state_ids.get((EventTypes.Create, ""))
# If we can't find the create event, assume we've hit a dead end
if not create_id:
break
# Retrieve the room's create event
create_event = yield self.store.get_event(create_id)
if not create_event:
break
# Check if a predecessor room is present
predecessor = create_event.content.get("predecessor", None)
if not predecessor:
break
# Add predecessor's room ID
historical_room_id = predecessor["room_id"]
historical_room_ids.append(historical_room_id)
# Scan through the old room for further predecessors
room_id = historical_room_id
defer.returnValue(historical_room_ids)
@defer.inlineCallbacks
def search(self, user, content, batch=None):
"""Performs a full text search for a user.
@ -139,6 +187,27 @@ class SearchHandler(BaseHandler):
room_ids = search_filter.filter_rooms(room_ids)
# If doing a subset of all rooms seearch, check if any of the rooms
# are from an upgraded room, and search their contents as well
# XXX: There is the possibility that we don't have a create event for
# the room in question, in which case we can't return all the results
# we want to.
# Ideally we would just return the results we can get now, and
# try to get more results from other servers in the background.
if search_filter.rooms:
historical_room_ids = []
for room_id in room_ids:
# Add any previous rooms to the search if they exist
ids = yield self.get_old_rooms_from_upgraded_room(room_id)
historical_room_ids += ids
# Add any found rooms to the list to search
for historical_room_id in historical_room_ids:
room_ids.add(historical_room_id)
# Prevent any historical events from being filtered
search_filter.add_room_ids(historical_room_ids)
if batch_group == "room_id":
room_ids.intersection_update({batch_group_key})

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@ -448,6 +448,7 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
Returns:
deferred: dict of (type, state_key) -> event_id
"""
def _get_current_state_ids_txn(txn):
txn.execute(
"""SELECT type, state_key, event_id FROM current_state_events