fix: do error on upload when a tag is not found anymore

- als removes a listener to CacheEntryInsertedEvent since
  CacheEntryUpdatedEvent will be called as well
- logs a warning instead

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

Author: blizzz

lib/AppInfo/Application.php

@@ -14,7 +14,6 @@
 use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IBootstrap;
 use OCP\AppFramework\Bootstrap\IRegistrationContext;
-use OCP\Files\Cache\CacheEntryInsertedEvent;
 use OCP\Files\Cache\CacheEntryUpdatedEvent;
 use OCP\WorkflowEngine\Events\RegisterOperationsEvent;
 
@@ -27,7 +26,6 @@ public function __construct() {
 
 	#[\Override]
 	public function register(IRegistrationContext $context): void {
-		$context->registerEventListener(CacheEntryInsertedEvent::class, CacheListener::class);
 		$context->registerEventListener(CacheEntryUpdatedEvent::class, CacheListener::class);
 
 		$context->registerEventListener(RegisterOperationsEvent::class, RegisterFlowOperationsListener::class);

lib/Operation.php

@@ -31,10 +31,13 @@
 use OCP\WorkflowEngine\IManager;
 use OCP\WorkflowEngine\IRuleMatcher;
 use OCP\WorkflowEngine\ISpecificOperation;
+use Psr\Log\LoggerInterface;
 use RuntimeException;
 use UnexpectedValueException;
 
 class Operation implements ISpecificOperation, IComplexOperation {
+	protected array $issuedTagNotFoundWarnings = [];
+
 	public function __construct(
 		protected readonly ISystemTagObjectMapper $objectMapper,
 		protected readonly ISystemTagManager $tagManager,
@@ -47,6 +50,7 @@ public function __construct(
 		protected readonly File $fileEntity,
 		protected readonly IUserSession $userSession,
 		protected readonly IGroupManager $groupManager,
+		protected readonly LoggerInterface $logger,
 	) {
 	}
 
@@ -64,7 +68,19 @@ public function checkOperations(IStorage $storage, int $fileId, string $file): v
 		$matches = $matcher->getFlows(false);
 
 		foreach ($matches as $match) {
-			$this->objectMapper->assignTags((string)$fileId, 'files', explode(',', $match['operation']));
+			try {
+				$this->objectMapper->assignTags((string)$fileId, 'files', explode(',', $match['operation']));
+			} catch (TagNotFoundException $e) {
+				$msg = sprintf('The tag to assign (ID %s) cannot be found anymore. The related rule is %s.',
+					$match['operation'],
+					$match['scope_type'] === 0 ? 'global' : 'owned by ' . $match['scope_actor_id']
+				);
+				if (isset($this->issuedTagNotFoundWarnings[md5($msg)])) {
+					continue;
+				}
+				$this->issuedTagNotFoundWarnings[md5($msg)] = true;
+				$this->logger->error($msg);
+			}
 		}
 	}