Jetpack Sync: Add key for full sync actions (#40566)

* Added key so it is the same when sending full sync actions

* changelog

* Switch to wp_json_encode instead of (string) since terms will show an array in status

* Use chunks_sent instead of last sent to avoid sending weird strings, espceially for term_relationships

* Using last sent again but with crc32

* Not sending specific key for modules that don't send multiple full sync actions

projects/packages/sync/changelog/update-sync-add-key-for-full-sync-actions

@@ -0,0 +1,4 @@
+Significance: minor
+Type: added
+
+Sync:Add specific key for full sync actions

projects/packages/sync/src/class-sender.php

@@ -704,16 +704,17 @@ public function do_sync_for_queue( $queue ) {
 	 *
 	 * @param string $action_name The action.
 	 * @param array  $data The data associated with the action.
+	 * @param string $key The key to use for the action.
 	 *
 	 * @return array Items processed. TODO: this doesn't make much sense anymore, it should probably be just a bool.
 	 */
-	public function send_action( $action_name, $data = null ) {
+	public function send_action( $action_name, $data = null, $key = null ) {
 		if ( ! Settings::is_sender_enabled( 'full_sync' ) ) {
 			return array();
 		}
 
 		// Compose the data to be sent.
-		$action_to_send = $this->create_action_to_send( $action_name, $data );
+		$action_to_send = $this->create_action_to_send( $action_name, $data, $key );
 
 		list( $items_to_send, $skipped_items_ids, $items, $preprocess_duration ) = $this->get_items_to_send( $action_to_send, true ); // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
 		Settings::set_is_sending( true );
@@ -741,11 +742,12 @@ public function send_action( $action_name, $data = null ) {
 	 *
 	 * @param string $action_name The action.
 	 * @param array  $data The data associated with the action.
+	 * @param string $key The key to use for the action.
 	 * @return array An array of synthetic sync actions keyed by current microtime(true)
 	 */
-	private function create_action_to_send( $action_name, $data ) {
+	private function create_action_to_send( $action_name, $data, $key = null ) {
 		return array(
-			(string) microtime( true ) => array(
+			$key ?? (string) microtime( true ) => array(
 				$action_name,
 				$data,
 				get_current_user_id(),

projects/packages/sync/src/modules/class-module.php

@@ -405,7 +405,9 @@ public function send_full_sync_actions( $config, $status, $send_until ) {
 				$status['finished'] = true;
 				return $status;
 			}
-			$result = $this->send_action( $this->full_sync_action_name(), array( $objects, $status['last_sent'] ) );
+			$key = $this->full_sync_action_name() . '_' . crc32( wp_json_encode( $status['last_sent'] ) );
+
+			$result = $this->send_action( $this->full_sync_action_name(), array( $objects, $status['last_sent'] ), $key );
 			if ( is_wp_error( $result ) || $wpdb->last_error ) {
 				$status['error'] = true;
 				return $status;
@@ -443,10 +445,11 @@ protected function set_send_full_sync_actions_status( $status, $objects ) {
 	 *
 	 * @param string $action_name The action.
 	 * @param array  $data The data associated with the action.
+	 * @param string $key The key to use for the action.
 	 */
-	public function send_action( $action_name, $data = null ) {
+	public function send_action( $action_name, $data = null, $key = null ) {
 		$sender = Sender::get_instance();
-		return $sender->send_action( $action_name, $data );
+		return $sender->send_action( $action_name, $data, $key );
 	}
 
 	/**