Implement order and group by
Erik Johnston
parent
f74f48e9e6
commit
05c326d445
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@ -46,15 +46,20 @@ class SearchHandler(BaseHandler):
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"""
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try:
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search_term = content["search_categories"]["room_events"]["search_term"]
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keys = content["search_categories"]["room_events"].get("keys", [
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room_cat = content["search_categories"]["room_events"]
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search_term = room_cat["search_term"]
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keys = room_cat.get("keys", [
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"content.body", "content.name", "content.topic",
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])
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filter_dict = content["search_categories"]["room_events"].get("filter", {})
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event_context = content["search_categories"]["room_events"].get(
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filter_dict = room_cat.get("filter", {})
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order_by = room_cat.get("order_by", "rank")
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event_context = room_cat.get(
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"event_context", None
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)
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group_by = room_cat.get("groupings", {}).get("group_by", {})
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group_keys = [g["key"] for g in group_by]
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if event_context is not None:
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before_limit = int(event_context.get(
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"before_limit", 5
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@ -65,6 +70,15 @@ class SearchHandler(BaseHandler):
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except KeyError:
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raise SynapseError(400, "Invalid search query")
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if order_by not in ("rank", "recent"):
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raise SynapseError(400, "Invalid order by: %r" % (order_by,))
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if set(group_keys) - {"room_id", "sender"}:
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raise SynapseError(
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400,
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"Invalid group by keys: %r" % (set(group_keys) - {"room_id", "sender"},)
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)
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search_filter = Filter(filter_dict)
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# TODO: Search through left rooms too
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@ -77,18 +91,88 @@ class SearchHandler(BaseHandler):
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room_ids = search_filter.filter_rooms(room_ids)
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rank_map, event_map, _ = yield self.store.search_msgs(
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room_ids, search_term, keys
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)
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rank_map = {}
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allowed_events = []
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room_groups = {}
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sender_group = {}
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filtered_events = search_filter.filter(event_map.values())
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if order_by == "rank":
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rank_map, event_map, _ = yield self.store.search_msgs(
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room_ids, search_term, keys
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)
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allowed_events = yield self._filter_events_for_client(
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user.to_string(), filtered_events
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)
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filtered_events = search_filter.filter(event_map.values())
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allowed_events.sort(key=lambda e: -rank_map[e.event_id])
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allowed_events = allowed_events[:search_filter.limit()]
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events = yield self._filter_events_for_client(
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user.to_string(), filtered_events
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)
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events.sort(key=lambda e: -rank_map[e.event_id])
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allowed_events = events[:search_filter.limit()]
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for e in allowed_events:
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rm = room_groups.setdefault(e.room_id, {
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"results": [],
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"order": rank_map[e.event_id],
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})
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rm["results"].append(e.event_id)
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s = sender_group.setdefault(e.sender, {
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"results": [],
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"order": rank_map[e.event_id],
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})
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s["results"].append(e.event_id)
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elif order_by == "recent":
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for room_id in room_ids:
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room_events = []
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pagination_token = None
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i = 0
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while len(room_events) < search_filter.limit() and i < 5:
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i += 5
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r_map, event_map, pagination_token = yield self.store.search_room(
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room_id, search_term, keys, search_filter.limit() * 2,
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pagination_token=pagination_token,
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)
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rank_map.update(r_map)
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filtered_events = search_filter.filter(event_map.values())
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events = yield self._filter_events_for_client(
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user.to_string(), filtered_events
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)
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room_events.extend(events)
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room_events = room_events[:search_filter.limit()]
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if len(event_map) < search_filter.limit() * 2:
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break
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if room_events:
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group = room_groups.setdefault(room_id, {})
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if pagination_token:
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group["next_batch"] = pagination_token
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group["results"] = [e.event_id for e in room_events]
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group["order"] = max(
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e.origin_server_ts/1000 for e in room_events
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if hasattr(e, "origin_server_ts")
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)
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allowed_events.extend(room_events)
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# Normalize the group ranks
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if room_groups:
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mx = max(g["order"] for g in room_groups.values())
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mn = min(g["order"] for g in room_groups.values())
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for g in room_groups.values():
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g["order"] = (g["order"] - mn) * 1.0 / (mx - mn)
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else:
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# We should never get here due to the guard earlier.
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raise NotImplementedError()
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if event_context is not None:
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now_token = yield self.hs.get_event_sources().get_current_token()
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@ -144,11 +228,19 @@ class SearchHandler(BaseHandler):
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logger.info("Found %d results", len(results))
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rooms_cat_res = {
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"results": results,
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"count": len(results)
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}
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if room_groups and "room_id" in group_keys:
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rooms_cat_res.setdefault("groups", {})["room_id"] = room_groups
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if sender_group and "sender" in group_keys:
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rooms_cat_res.setdefault("groups", {})["sender"] = sender_group
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defer.returnValue({
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"search_categories": {
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"room_events": {
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"results": results,
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"count": len(results)
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}
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"room_events": rooms_cat_res
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}
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})
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@ -20,6 +20,12 @@ from synapse.storage.engines import PostgresEngine, Sqlite3Engine
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from collections import namedtuple
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import logging
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logger = logging.getLogger(__name__)
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"""The result of a search.
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Fields:
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@ -109,3 +115,93 @@ class SearchStore(SQLBaseStore):
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event_map,
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None
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))
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@defer.inlineCallbacks
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def search_room(self, room_id, search_term, keys, limit, pagination_token=None):
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"""Performs a full text search over events with given keys.
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Args:
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room_id (str): The room_id to search in
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search_term (str): Search term to search for
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keys (list): List of keys to search in, currently supports
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"content.body", "content.name", "content.topic"
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pagination_token (str): A pagination token previously returned
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Returns:
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SearchResult
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"""
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clauses = []
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args = [search_term, room_id]
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local_clauses = []
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for key in keys:
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local_clauses.append("key = ?")
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args.append(key)
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clauses.append(
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"(%s)" % (" OR ".join(local_clauses),)
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)
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if pagination_token:
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topo, stream = pagination_token.split(",")
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clauses.append(
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"(topological_ordering < ?"
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" OR (topological_ordering = ? AND stream_ordering < ?))"
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)
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args.extend([topo, topo, stream])
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if isinstance(self.database_engine, PostgresEngine):
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sql = (
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"SELECT ts_rank_cd(vector, query) as rank,"
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" topological_ordering, stream_ordering, room_id, event_id"
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" FROM plainto_tsquery('english', ?) as query, event_search"
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" NATURAL JOIN events"
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" WHERE vector @@ query AND room_id = ?"
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)
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elif isinstance(self.database_engine, Sqlite3Engine):
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sql = (
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"SELECT rank(matchinfo(event_search)) as rank, room_id, event_id"
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" topological_ordering, stream_ordering"
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" FROM event_search"
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" NATURAL JOIN events"
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" WHERE value MATCH ? AND room_id = ?"
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)
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else:
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# This should be unreachable.
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raise Exception("Unrecognized database engine")
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for clause in clauses:
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sql += " AND " + clause
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# We add an arbitrary limit here to ensure we don't try to pull the
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# entire table from the database.
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sql += " ORDER BY topological_ordering DESC, stream_ordering DESC LIMIT ?"
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args.append(limit)
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results = yield self._execute(
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"search_rooms", self.cursor_to_dict, sql, *args
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)
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events = yield self._get_events([r["event_id"] for r in results])
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event_map = {
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ev.event_id: ev
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for ev in events
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}
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pagination_token = None
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if results:
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topo = results[-1]["topological_ordering"]
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stream = results[-1]["stream_ordering"]
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pagination_token = "%s,%s" % (topo, stream)
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defer.returnValue(SearchResult(
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{
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r["event_id"]: r["rank"]
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for r in results
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if r["event_id"] in event_map
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},
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event_map,
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pagination_token
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))
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