Merge pull request #87 from Automattic/fix/86

Filter Jetpack Sync post-type blacklist to ensure plugin is always excluded

includes/class-cron-options-cpt.php

@@ -29,6 +29,10 @@ class Cron_Options_CPT extends Singleton {
 		// Data storage
 		add_action( 'init', array( $this, 'register_post_type' ) );
 
+		// Prevent Jetpack from syncing plugin's CPT entries
+		add_filter( 'option_jetpack_sync_settings_post_types_blacklist', array( $this, 'exclude_from_jetpack_sync' ), 999 );
+		add_filter( 'default_option_jetpack_sync_settings_post_types_blacklist', array( $this, 'exclude_from_jetpack_sync' ), 999 );
+
 		// Lock for post insertion, to guard against endless event creation when `wp_next_scheduled()` is misused
 		Lock::prime_lock( self::LOCK );
 
@@ -58,6 +62,23 @@ class Cron_Options_CPT extends Singleton {
 		}
 	}
 
+	/**
+	 * Block Jetpack Sync from capturing plugin's data
+	 *
+	 * Data changes frequently and is of no value in any remote context
+	 */
+	public function exclude_from_jetpack_sync( $option_value ) {
+		if ( ! is_array( $option_value ) ) {
+			$option_value = array();
+		}
+
+		if ( ! in_array( self::POST_TYPE, $option_value ) ) {
+			$option_value[] = self::POST_TYPE;
+		}
+
+		return $option_value;
+	}
+
 	/**
 	 * PLUGIN FUNCTIONALITY
 	 */