Revert "Monitor only memory limit while running the data migration"

This reverts commit 923eeb2.

includes/class-wc-background-updater.php

@@ -137,7 +137,7 @@ protected function complete() {
 	 *
 	 * @return bool
 	 */
-	public function is_memory_exceeded() {
-		return $this->memory_exceeded();
+	public function is_batch_limit_exceeded() {
+		return $this->batch_limit_exceeded();
 	}
 }

includes/wc-update-functions.php

@@ -1893,7 +1893,7 @@ function wc_update_350_order_customer_id( $updater = false ) {
 
 		$wpdb->update( $wpdb->posts, array( 'post_author' => 0 ), array( 'post_type' => 'shop_order_refund' ) );
 	} else {
-		// If running the update from the wp-admin, copy data in batches being careful not to use more memory than allowed.
+		// If running the update from the wp-admin, copy data in batches being careful not to use more memory than allowed and respecting PHP time limit.
 		$admin_orders_sql = '';
 
 		// Get the list of orders that we don't want to change as they belong to user ID 1.
@@ -1941,9 +1941,9 @@ function wc_update_350_order_customer_id( $updater = false ) {
 
 			// Update post_author for a batch of orders.
 			foreach ( $orders_meta_data as $order_meta ) {
-				// Stop update execution and re-enqueue it if near memory limit.
-				if ( $updater instanceof WC_Background_Updater && $updater->is_memory_exceeded() ) {
-					return true;
+				// Stop update execution and re-enqueue it if near memory and timeout limits.
+				if ( $updater instanceof WC_Background_Updater && $updater->is_batch_limit_exceeded() ) {
+					return -1;
 				}
 
 				$wpdb->update( $wpdb->posts, array( 'post_author' => $order_meta->customer_id ), array( 'ID' => $order_meta->post_id ) );
@@ -1952,9 +1952,9 @@ function wc_update_350_order_customer_id( $updater = false ) {
 
 		// Set post_author to 0 instead of 1 on all shop_order_refunds.
 		while ( true ) {
-			// Stop update execution and re-enqueue it if near memory limit.
-			if ( $updater instanceof WC_Background_Updater && $updater->is_memory_exceeded() ) {
-				return true;
+			// Stop update execution and re-enqueue it if near memory and timeout limits.
+			if ( $updater instanceof WC_Background_Updater && $updater->is_batch_limit_exceeded() ) {
+				return -1;
 			}
 
 			$updated_rows = $wpdb->query( "UPDATE {$wpdb->posts} SET post_author = 0 WHERE post_type = 'shop_order_refund' LIMIT 1000" );