Remove groups replication code. (#12900)

The replication logic for groups is no longer used, so the message
passing infrastructure can be removed.

1 files changed, 0 insertions, 58 deletions

diff --git a/synapse/replication/slave/storage/groups.py b/synapse/replication/slave/storage/groups.py
deleted file mode 100644
index d6f37d7479..0000000000
--- a/synapse/replication/slave/storage/groups.py
+++ /dev/null
@@ -1,58 +0,0 @@
-# Copyright 2016 OpenMarket Ltd
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from typing import TYPE_CHECKING, Any, Iterable
-
-from synapse.replication.slave.storage._base import BaseSlavedStore
-from synapse.replication.slave.storage._slaved_id_tracker import SlavedIdTracker
-from synapse.replication.tcp.streams import GroupServerStream
-from synapse.storage.database import DatabasePool, LoggingDatabaseConnection
-from synapse.storage.databases.main.group_server import GroupServerWorkerStore
-from synapse.util.caches.stream_change_cache import StreamChangeCache
-
-if TYPE_CHECKING:
-    from synapse.server import HomeServer
-
-
-class SlavedGroupServerStore(GroupServerWorkerStore, BaseSlavedStore):
-    def __init__(
-        self,
-        database: DatabasePool,
-        db_conn: LoggingDatabaseConnection,
-        hs: "HomeServer",
-    ):
-        super().__init__(database, db_conn, hs)
-
-        self.hs = hs
-
-        self._group_updates_id_gen = SlavedIdTracker(
-            db_conn, "local_group_updates", "stream_id"
-        )
-        self._group_updates_stream_cache = StreamChangeCache(
-            "_group_updates_stream_cache",
-            self._group_updates_id_gen.get_current_token(),
-        )
-
-    def get_group_stream_token(self) -> int:
-        return self._group_updates_id_gen.get_current_token()
-
-    def process_replication_rows(
-        self, stream_name: str, instance_name: str, token: int, rows: Iterable[Any]
-    ) -> None:
-        if stream_name == GroupServerStream.NAME:
-            self._group_updates_id_gen.advance(instance_name, token)
-            for row in rows:
-                self._group_updates_stream_cache.entity_has_changed(row.user_id, token)
-
-        return super().process_replication_rows(stream_name, instance_name, token, rows)