Recursively delete failed worker tasks

src/Protocol/ActivityPub/Processor.php

@@ -551,16 +551,13 @@ class Processor
 			}
 		}
 
-		if ($activity['target_id'] != $actor['featured']) {
+		$parent = Post::selectFirst(['uri-id'], ['uri' => $activity['object_id']]);
-			return null;
+		if (empty($parent['uri-id'])) {
+			if (self::fetchMissingActivity($activity['object_id'], $activity, '', Receiver::COMPLETION_AUTO)) {
+				$parent = Post::selectFirst(['uri-id'], ['uri' => $activity['object_id']]);
+			}
 		}
 
-		$id = Contact::getIdForURL($activity['actor']);
-		if (empty($id)) {
-			return null;
-		}
-
-		$parent = Post::selectFirst(['uri-id'], ['uri' => $activity['object_id'], 'author-id' => $id]);
 		if (!empty($parent['uri-id'])) {
 			return $parent['uri-id'];
 		}
@@ -1191,20 +1188,27 @@ class Processor
 			return '';
 		}
 
+		$signer = [];
+
+		if (!empty($object['attributedTo'])) {
+			$attributed_to = $object['attributedTo'];
+			if (is_array($attributed_to)) {
+				$compacted = JsonLD::compact($object);
+				$attributed_to = JsonLD::fetchElement($compacted, 'as:attributedTo', '@id');
+			}
+			$signer[] = $attributed_to;	
+		}
+
 		if (!empty($object['actor'])) {
 			$object_actor = $object['actor'];
-		} elseif (!empty($object['attributedTo'])) {
+		} elseif (!empty($attributed_to)) {
-			$object_actor = $object['attributedTo'];
+			$object_actor = $attributed_to;
-			if (is_array($object_actor)) {
-				$compacted = JsonLD::compact($object);
-				$object_actor = JsonLD::fetchElement($compacted, 'as:attributedTo', '@id');
-			}
 		} else {
 			// Shouldn't happen
 			$object_actor = '';
 		}
 
-		$signer = [$object_actor];
+		$signer[] = $object_actor;
 
 		if (!empty($child['author'])) {
 			$actor = $child['author'];

src/Protocol/ActivityPub/Queue.php

@@ -95,6 +95,42 @@ class Queue
 		DBA::delete('inbox-entry', ['id' => $activity['entry-id']]);
 	}
 
+	/**
+	 * Delete all entries that depend on the given worker id
+	 *
+	 * @param integer $wid
+	 * @return void
+	 */
+	public static function deleteByWorkerId(int $wid)
+	{
+		$entries = DBA::select('inbox-entry', ['id'], ['wid' => $wid]);
+		while ($entry = DBA::fetch($entries)) {
+			self::deleteById($entry['id']);
+		}
+		DBA::close($entries);
+	}
+
+	/**
+	 * Delete recursively an entry and all their children
+	 *
+	 * @param integer $id
+	 * @return void
+	 */
+	private static function deleteById(int $id)
+	{
+		$entry = DBA::selectFirst('inbox-entry', ['id', 'object-id'], ['id' => $id]);
+		if (empty($entry)) {
+			return;
+		}
+
+		$children = DBA::select('inbox-entry', ['id'], ['in-reply-to-id' => $entry['object-id']]);
+		while ($child = DBA::fetch($children)) {
+			self::deleteById($child['id']);
+		}
+		DBA::close($children);
+		DBA::delete('inbox-entry', ['id' => $entry['id']]);
+	}
+
 	/**
 	 * Set the worker id for the queue entry
 	 *
@@ -145,6 +181,7 @@ class Queue
 
 		$activity['entry-id']        = $entry['id'];
 		$activity['worker-id']       = $entry['wid'];
+		$activity['recursion-depth'] = 0;
 
 		$receivers = DBA::select('inbox-entry-receiver', ['uid'], ['queue-id' => $entry['id']]);
 		while ($receiver = DBA::fetch($receivers)) {
@@ -166,8 +203,13 @@ class Queue
 	 */
 	public static function processAll()
 	{
-		$entries = DBA::select('inbox-entry', ['id', 'type', 'object-type'], [], ['order' => ['id' => true]]);
+		$entries = DBA::select('inbox-entry', ['id', 'type', 'object-type', 'object-id', 'in-reply-to-id'], ["`wid` IS NULL"], ['order' => ['id' => true]]);
 		while ($entry = DBA::fetch($entries)) {
+			// We don't need to process entries that depend on already existing entries.
+			if (!empty($entry['in-reply-to-id']) && DBA::exists('inbox-entry', ['object-id' => $entry['in-reply-to-id']])) {
+				continue;
+			}
+			Logger::debug('Process leftover entry', $entry);
 			self::process($entry['id']);
 		}
 	}

src/Protocol/ActivityPub/Receiver.php

@@ -517,10 +517,6 @@ class Receiver
 			}
 		}
 
-		if (($type == 'as:Add') && is_array($activity['as:object']) && (count($activity['as:object']) == 1)) {
-			$trust_source = false;
-		}
-
 		// $trust_source is called by reference and is set to true if the content was retrieved successfully
 		$object_data = self::prepareObjectData($activity, $uid, $push, $trust_source);
 		if (empty($object_data)) {
@@ -556,10 +552,6 @@ class Receiver
 			$object_data['thread-children-type'] = $activity['thread-children-type'];
 		}
 
-		if (!empty($activity['recursion-depth'])) {
-			$object_data['recursion-depth'] = $activity['recursion-depth'];
-		}
-
 		// Internal flag for posts that arrived via relay
 		if (!empty($activity['from-relay'])) {
 			$object_data['from-relay'] = $activity['from-relay'];
@@ -571,6 +563,10 @@ class Receiver
 
 		$object_data = Queue::add($object_data, $type, $uid, $http_signer, $push);
 
+		if (!empty($activity['recursion-depth'])) {
+			$object_data['recursion-depth'] = $activity['recursion-depth'];
+		}
+
 		if (in_array('as:Question', [$object_data['object_type'] ?? '', $object_data['object_object_type'] ?? ''])) {
 			self::storeUnhandledActivity(false, $type, $object_data, $activity, $body, $uid, $trust_source, $push, $signer);
 		}

src/Worker/Cron.php

@@ -129,10 +129,13 @@ class Cron
 				Worker::add(PRIORITY_LOW, 'OptimizeTables');
 			}
 
-			DI::config()->set('system', 'last_cron_daily', time());
+			// Process all unprocessed entries
+			Queue::processAll();
 
 			// Resubscribe to relay servers
 			Relay::reSubscribe();
+
+			DI::config()->set('system', 'last_cron_daily', time());
 		}
 
 		Logger::notice('end');

src/Worker/FetchMissingActivity.php

@@ -23,6 +23,7 @@ namespace Friendica\Worker;
 
 use Friendica\Core\Logger;
 use Friendica\Core\Worker;
+use Friendica\DI;
 use Friendica\Protocol\ActivityPub;
 use Friendica\Protocol\ActivityPub\Queue;
 use Friendica\Protocol\ActivityPub\Receiver;
@@ -32,6 +33,8 @@ class FetchMissingActivity
 	/**
 	 * Fetch missing activities
 	 * @param string $url Contact URL
+	 * 
+	 * @return void
 	 */
 	public static function execute(string $url, array $child = [], string $relay_actor = '', int $completion = Receiver::COMPLETION_MANUAL)
 	{
@@ -39,10 +42,14 @@ class FetchMissingActivity
 		$result = ActivityPub\Processor::fetchMissingActivity($url, $child, $relay_actor, $completion);
 		if ($result) {
 			Logger::info('Successfully fetched missing activity', ['url' => $url]);
-			Queue::processReplyByUri($url);
 		} elseif (!Worker::defer()) {
-			// @todo perform recursive deletion of all entries
 			Logger::info('Activity could not be fetched', ['url' => $url]);
+
+			// recursively delete all entries that belong to this worker task
+			$queue = DI::app()->getQueue();
+			if (!empty($queue['id'])) {
+				Queue::deleteByWorkerId($queue['id']);
+			}
 		} else {
 			Logger::info('Fetching deferred', ['url' => $url]);
 		}