wikimedia / mediawiki

		$masterStatus = $this->backends[$this->masterIndex]->doQuickOperations( $realOps );

		$status->merge( $masterStatus );

		// Propagate the operations to the clone backends...

		foreach ( $this->backends as $index => $backend ) {

			if ( $index === $this->masterIndex ) {

				continue; // done already

			}

			$realOps = $this->substOpBatchPaths( $ops, $backend );

			if ( $this->asyncWrites && !$this->hasVolatileSources( $ops ) ) {

				DeferredUpdates::addCallableUpdate(

					function() use ( $backend, $realOps ) {

						$backend->doQuickOperations( $realOps );

					}

				);

			} else {

				$status->merge( $backend->doQuickOperations( $realOps ) );

			}

		}

		// Make 'success', 'successCount', and 'failCount' fields reflect

		// the overall operation, rather than all the batches for each backend.

		// Do this by only using success values from the master backend's batch.

		$masterStatus = $this->backends[$this->masterIndex]->$method( $realParams );

		$status->merge( $masterStatus );

		foreach ( $this->backends as $index => $backend ) {

			if ( $index === $this->masterIndex ) {

				continue; // already done

			}

			$realParams = $this->substOpPaths( $params, $backend );

			if ( $this->asyncWrites ) {

				DeferredUpdates::addCallableUpdate(

					function() use ( $backend, $method, $realParams ) {

						$backend->$method( $realParams );

					}

				);

			} else {

				$status->merge( $backend->$method( $realParams ) );

			}

		}

		return $status;

	}