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# frozen_string_literal: true
class CreateNamespacesSyncTrigger < Gitlab::Database::Migration[1.0]
include Gitlab::Database::SchemaHelpers
enable_lock_retries!
TABLE_NAME = 'namespaces'
EVENT_TABLE_NAME = 'namespaces_sync_events'
FUNCTION_NAME = 'insert_namespaces_sync_event'
TRIGGER_ON_INSERT = 'trigger_namespaces_parent_id_on_insert'
TRIGGER_ON_UPDATE = 'trigger_namespaces_parent_id_on_update'
def up
create_trigger_function(FUNCTION_NAME) do
<<~SQL
INSERT INTO #{EVENT_TABLE_NAME} (namespace_id)
VALUES(COALESCE(NEW.id, OLD.id));
RETURN NULL;
SQL
end
create_trigger(TABLE_NAME, TRIGGER_ON_INSERT, FUNCTION_NAME, fires: 'AFTER INSERT')
create_trigger(TABLE_NAME, TRIGGER_ON_UPDATE, FUNCTION_NAME, fires: 'AFTER UPDATE') do
<<~SQL
WHEN (OLD.parent_id IS DISTINCT FROM NEW.parent_id)
SQL
end
end
def down
drop_trigger(TABLE_NAME, TRIGGER_ON_INSERT)
drop_trigger(TABLE_NAME, TRIGGER_ON_UPDATE)
drop_function(FUNCTION_NAME)
end
end
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