diff --git a/synapse/storage/search.py b/synapse/storage/search.py
index cdf003502f..e37e56c1f2 100644
--- a/synapse/storage/search.py
+++ b/synapse/storage/search.py
@@ -20,6 +20,12 @@ from synapse.storage.engines import PostgresEngine, Sqlite3Engine
from collections import namedtuple
+import logging
+
+
+logger = logging.getLogger(__name__)
+
+
"""The result of a search.
Fields:
@@ -109,3 +115,93 @@ class SearchStore(SQLBaseStore):
event_map,
None
))
+
+ @defer.inlineCallbacks
+ def search_room(self, room_id, search_term, keys, limit, pagination_token=None):
+ """Performs a full text search over events with given keys.
+
+ Args:
+ room_id (str): The room_id to search in
+ search_term (str): Search term to search for
+ keys (list): List of keys to search in, currently supports
+ "content.body", "content.name", "content.topic"
+ pagination_token (str): A pagination token previously returned
+
+ Returns:
+ SearchResult
+ """
+ clauses = []
+ args = [search_term, room_id]
+
+ local_clauses = []
+ for key in keys:
+ local_clauses.append("key = ?")
+ args.append(key)
+
+ clauses.append(
+ "(%s)" % (" OR ".join(local_clauses),)
+ )
+
+ if pagination_token:
+ topo, stream = pagination_token.split(",")
+ clauses.append(
+ "(topological_ordering < ?"
+ " OR (topological_ordering = ? AND stream_ordering < ?))"
+ )
+ args.extend([topo, topo, stream])
+
+ if isinstance(self.database_engine, PostgresEngine):
+ sql = (
+ "SELECT ts_rank_cd(vector, query) as rank,"
+ " topological_ordering, stream_ordering, room_id, event_id"
+ " FROM plainto_tsquery('english', ?) as query, event_search"
+ " NATURAL JOIN events"
+ " WHERE vector @@ query AND room_id = ?"
+ )
+ elif isinstance(self.database_engine, Sqlite3Engine):
+ sql = (
+ "SELECT rank(matchinfo(event_search)) as rank, room_id, event_id"
+ " topological_ordering, stream_ordering"
+ " FROM event_search"
+ " NATURAL JOIN events"
+ " WHERE value MATCH ? AND room_id = ?"
+ )
+ else:
+ # This should be unreachable.
+ raise Exception("Unrecognized database engine")
+
+ for clause in clauses:
+ sql += " AND " + clause
+
+ # We add an arbitrary limit here to ensure we don't try to pull the
+ # entire table from the database.
+ sql += " ORDER BY topological_ordering DESC, stream_ordering DESC LIMIT ?"
+
+ args.append(limit)
+
+ results = yield self._execute(
+ "search_rooms", self.cursor_to_dict, sql, *args
+ )
+
+ events = yield self._get_events([r["event_id"] for r in results])
+
+ event_map = {
+ ev.event_id: ev
+ for ev in events
+ }
+
+ pagination_token = None
+ if results:
+ topo = results[-1]["topological_ordering"]
+ stream = results[-1]["stream_ordering"]
+ pagination_token = "%s,%s" % (topo, stream)
+
+ defer.returnValue(SearchResult(
+ {
+ r["event_id"]: r["rank"]
+ for r in results
+ if r["event_id"] in event_map
+ },
+ event_map,
+ pagination_token
+ ))
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