1 files changed, 35 insertions, 0 deletions
diff --git a/db/migrate/20220824175648_limit_namespaces_sync_triggers_to_traversal_ids_update.rb b/db/migrate/20220824175648_limit_namespaces_sync_triggers_to_traversal_ids_update.rb
new file mode 100644
index 00000000000..142744b5493
--- /dev/null
+++ b/db/migrate/20220824175648_limit_namespaces_sync_triggers_to_traversal_ids_update.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+class LimitNamespacesSyncTriggersToTraversalIdsUpdate < Gitlab::Database::Migration[2.0]
+  include Gitlab::Database::SchemaHelpers
+
+  enable_lock_retries!
+
+  TABLE_NAME = 'namespaces'
+  EVENT_TABLE_NAME = 'namespaces_sync_events'
+  FUNCTION_NAME = 'insert_namespaces_sync_event'
+  OLD_TRIGGER_ON_INSERT = 'trigger_namespaces_parent_id_on_insert'
+  OLD_TRIGGER_ON_UPDATE = 'trigger_namespaces_parent_id_on_update'
+  NEW_TRIGGER_ON_UPDATE = 'trigger_namespaces_traversal_ids_on_update'
+
+  def up
+    create_trigger(TABLE_NAME, NEW_TRIGGER_ON_UPDATE, FUNCTION_NAME, fires: 'AFTER UPDATE') do
+      <<~SQL
+        WHEN (OLD.traversal_ids IS DISTINCT FROM NEW.traversal_ids)
+      SQL
+    end
+    drop_trigger(TABLE_NAME, OLD_TRIGGER_ON_UPDATE)
+    drop_trigger(TABLE_NAME, OLD_TRIGGER_ON_INSERT)
+  end
+
+  # Revert both triggers to the version defined in db/migrate/20211011141242_create_namespaces_sync_trigger.rb
+  def down
+    create_trigger(TABLE_NAME, OLD_TRIGGER_ON_INSERT, FUNCTION_NAME, fires: 'AFTER INSERT')
+    create_trigger(TABLE_NAME, OLD_TRIGGER_ON_UPDATE, FUNCTION_NAME, fires: 'AFTER UPDATE') do
+      <<~SQL
+        WHEN (OLD.parent_id IS DISTINCT FROM NEW.parent_id)
+      SQL
+    end
+    drop_trigger(TABLE_NAME, NEW_TRIGGER_ON_UPDATE)
+  end
+end