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https://mau.dev/maunium/synapse.git
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Factor out common code for search insert
we can reuse the same code as is used for event insert, for doing the background index population.
This commit is contained in:
Richard van der Hoff
parent
bd25f9cf36
commit
80b8a28100
@ -12,6 +12,7 @@
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from collections import namedtuple
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import sys
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from twisted.internet import defer
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@ -26,6 +27,11 @@ import ujson as json
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logger = logging.getLogger(__name__)
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SearchEntry = namedtuple('SearchEntry', [
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'key', 'value', 'event_id', 'room_id', 'stream_ordering',
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'origin_server_ts',
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])
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class SearchStore(BackgroundUpdateStore):
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@ -49,16 +55,17 @@ class SearchStore(BackgroundUpdateStore):
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@defer.inlineCallbacks
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def _background_reindex_search(self, progress, batch_size):
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# we work through the events table from highest stream id to lowest
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target_min_stream_id = progress["target_min_stream_id_inclusive"]
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max_stream_id = progress["max_stream_id_exclusive"]
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rows_inserted = progress.get("rows_inserted", 0)
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INSERT_CLUMP_SIZE = 1000
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TYPES = ["m.room.name", "m.room.message", "m.room.topic"]
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def reindex_search_txn(txn):
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sql = (
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"SELECT stream_ordering, event_id, room_id, type, content FROM events"
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"SELECT stream_ordering, event_id, room_id, type, content, "
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" origin_server_ts FROM events"
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" WHERE ? <= stream_ordering AND stream_ordering < ?"
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" AND (%s)"
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" ORDER BY stream_ordering DESC"
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@ -67,6 +74,10 @@ class SearchStore(BackgroundUpdateStore):
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txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
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# we could stream straight from the results into
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# store_search_entries_txn with a generator function, but that
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# would mean having two cursors open on the database at once.
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# Instead we just build a list of results.
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rows = self.cursor_to_dict(txn)
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if not rows:
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return 0
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@ -79,6 +90,8 @@ class SearchStore(BackgroundUpdateStore):
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event_id = row["event_id"]
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room_id = row["room_id"]
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etype = row["type"]
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stream_ordering = row["stream_ordering"]
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origin_server_ts = row["origin_server_ts"]
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try:
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content = json.loads(row["content"])
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except Exception:
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@ -93,6 +106,8 @@ class SearchStore(BackgroundUpdateStore):
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elif etype == "m.room.name":
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key = "content.name"
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value = content["name"]
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else:
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raise Exception("unexpected event type %s" % etype)
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except (KeyError, AttributeError):
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# If the event is missing a necessary field then
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# skip over it.
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@ -103,29 +118,16 @@ class SearchStore(BackgroundUpdateStore):
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# then skip over it
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continue
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event_search_rows.append((event_id, room_id, key, value))
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event_search_rows.append(SearchEntry(
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key=key,
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value=value,
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event_id=event_id,
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room_id=room_id,
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stream_ordering=stream_ordering,
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origin_server_ts=origin_server_ts,
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))
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if isinstance(self.database_engine, PostgresEngine):
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txn.execute("SET work_mem='256kB'")
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sql = (
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"INSERT INTO event_search (event_id, room_id, key, vector)"
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" VALUES (?,?,?,to_tsvector('english', ?))"
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)
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elif isinstance(self.database_engine, Sqlite3Engine):
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sql = (
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"INSERT INTO event_search (event_id, room_id, key, value)"
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" VALUES (?,?,?,?)"
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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 index in range(0, len(event_search_rows), INSERT_CLUMP_SIZE):
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clump = event_search_rows[index:index + INSERT_CLUMP_SIZE]
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txn.executemany(sql, clump)
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if isinstance(self.database_engine, PostgresEngine):
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txn.execute("RESET work_mem")
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self.store_search_entries_txn(txn, event_search_rows)
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progress = {
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"target_min_stream_id_inclusive": target_min_stream_id,
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@ -255,6 +257,26 @@ class SearchStore(BackgroundUpdateStore):
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key (str):
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value (str):
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"""
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self.store_search_entries_txn(
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txn,
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(SearchEntry(
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key=key,
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value=value,
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event_id=event.event_id,
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room_id=event.room_id,
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stream_ordering=event.internal_metadata.stream_ordering,
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origin_server_ts=event.origin_server_ts,
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),),
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)
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def store_search_entries_txn(self, txn, entries):
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"""Add entries to the search table
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Args:
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txn (cursor):
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entries (iterable[SearchEntry]):
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entries to be added to the table
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"""
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if isinstance(self.database_engine, PostgresEngine):
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sql = (
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"INSERT INTO event_search"
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@ -262,6 +284,10 @@ class SearchStore(BackgroundUpdateStore):
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" origin_server_ts)"
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" VALUES (?,?,?,to_tsvector('english', ?),?,?)"
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)
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args = ((
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entry.event_id, entry.room_id, entry.key, entry.value,
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entry.stream_ordering, entry.origin_server_ts,
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) for entry in entries)
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# inserts to a GIN index are normally batched up into a pending
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# list, and then all committed together once the list gets to a
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@ -277,14 +303,7 @@ class SearchStore(BackgroundUpdateStore):
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txn.execute("SET work_mem='256kB'")
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try:
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txn.execute(
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sql,
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(
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event.event_id, event.room_id, key, value,
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event.internal_metadata.stream_ordering,
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event.origin_server_ts,
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)
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)
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txn.executemany(sql, args)
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except Exception:
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# we need to reset work_mem, but doing so may throw a new
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# exception and we want to preserve the original
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@ -306,7 +325,11 @@ class SearchStore(BackgroundUpdateStore):
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"INSERT INTO event_search (event_id, room_id, key, value)"
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" VALUES (?,?,?,?)"
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)
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txn.execute(sql, (event.event_id, event.room_id, key, value,))
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args = ((
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entry.event_id, entry.room_id, entry.key, entry.value,
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) for entry in entries)
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txn.executemany(sql, args)
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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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