Remove groups code from synapse_port_db. (#12899)

changelog.d/12899.removal

@@ -0,0 +1 @@
+Remove support for the non-standard groups/communities feature from Synapse.

synapse/_scripts/synapse_port_db.py

@@ -102,14 +102,6 @@ BOOLEAN_COLUMNS = {
     "devices": ["hidden"],
     "device_lists_outbound_pokes": ["sent"],
     "users_who_share_rooms": ["share_private"],
-    "groups": ["is_public"],
-    "group_rooms": ["is_public"],
-    "group_users": ["is_public", "is_admin"],
-    "group_summary_rooms": ["is_public"],
-    "group_room_categories": ["is_public"],
-    "group_summary_users": ["is_public"],
-    "group_roles": ["is_public"],
-    "local_group_membership": ["is_publicised", "is_admin"],
     "e2e_room_keys": ["is_verified"],
     "account_validity": ["email_sent"],
     "redactions": ["have_censored"],
@@ -175,6 +167,21 @@ IGNORED_TABLES = {
     "ui_auth_sessions",
     "ui_auth_sessions_credentials",
     "ui_auth_sessions_ips",
+    # Groups/communities is no longer supported.
+    "group_attestations_remote",
+    "group_attestations_renewals",
+    "group_invites",
+    "group_roles",
+    "group_room_categories",
+    "group_rooms",
+    "group_summary_roles",
+    "group_summary_room_categories",
+    "group_summary_rooms",
+    "group_summary_users",
+    "group_users",
+    "groups",
+    "local_group_membership",
+    "local_group_updates",
 }
 
 

synapse/storage/databases/main/group_server.py

@@ -29,11 +29,6 @@ class GroupServerStore(SQLBaseStore):
         db_conn: LoggingDatabaseConnection,
         hs: "HomeServer",
     ):
-        database.updates.register_background_index_update(
-            update_name="local_group_updates_index",
-            index_name="local_group_updates_stream_id_index",
-            table="local_group_updates",
-            columns=("stream_id",),
-            unique=True,
-        )
+        # Register a legacy groups background update as a no-op.
+        database.updates.register_noop_background_update("local_group_updates_index")
         super().__init__(database, db_conn, hs)