Make sure event has required properties,

It includes a mechanism that checks the integrity of the event before any operation by checking properties against a local array which can be adjusted later on!

Author: ferishili

cronjobs/opencast_discover_videos.php

@@ -13,6 +13,13 @@
 class OpencastDiscoverVideos extends CronJob
 {
 
+    /**
+     * @var array The required properties of the event object which will be checked before any operation.
+     */
+    private static $required_event_properties = [
+        'archive_version'
+    ];
+
     public static function getName()
     {
         return _('Opencast - Neue Videos finden');
@@ -26,8 +33,8 @@ public static function getDescription()
     public function execute($last_result, $parameters = array())
     {
         /*
-         - Neue Videos in OC identifizieren (die Stud.IP noch nicht kennt)
-         - Eintragen der Videos und setzen der Rechte (Queue)
+            - Neue Videos in OC identifizieren (die Stud.IP noch nicht kennt)
+            - Eintragen der Videos und setzen der Rechte (Queue)
         */
         $db = DBManager::get();
         $stmt_ids = $db->prepare("
@@ -94,6 +101,12 @@ public function execute($last_result, $parameters = array())
                 if (!empty($oc_events)) foreach ($oc_events as $event) {
                     $current_event = null;
 
+                    // Check the required properties of the event.
+                    if (!self::checkEventIntegrity($event)) {
+                        echo '[Skipped] The event does not have all required properties, skipping: ' . $event->identifier . "\n";
+                        continue;
+                    }
+
                     // only add videos / reinspect videos if they are readily processed
                     if ($event->status == 'EVENTS.EVENTS.STATUS.PROCESSED') {
                         $event_ids[] = $event->identifier;
@@ -197,6 +210,23 @@ public function execute($last_result, $parameters = array())
         echo 'Finished updating videos and workflows' . "\n";
     }
 
+    /**
+     * Check if the event has all required properties.
+     *
+     * @param object $event The event object to check.
+     * @return bool True if the event has all required properties, false otherwise.
+     */
+    private static function checkEventIntegrity($event) {
+        // Check if the event has all required properties
+        foreach (self::$required_event_properties as $property) {
+            if (!property_exists($event, $property)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
     private static function parseEvent($event, $video)
     {
         if (in_array($event->processing_state, ['FAILED', 'STOPPED']) === true) { // It failed.