fix(userstatus): catch unique constraint violation

Signed-off-by: Anna Larch <anna@nextcloud.com>

apps/user_status/lib/Listener/UserLiveStatusListener.php

@@ -32,10 +32,12 @@ use OCA\UserStatus\Db\UserStatusMapper;
 use OCA\UserStatus\Service\StatusService;
 use OCP\AppFramework\Db\DoesNotExistException;
 use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\DB\Exception;
 use OCP\EventDispatcher\Event;
 use OCP\EventDispatcher\IEventListener;
 use OCP\User\Events\UserLiveStatusEvent;
 use OCP\UserStatus\IUserStatus;
+use Psr\Log\LoggerInterface;
 
 /**
  * Class UserDeletedListener
@@ -50,7 +52,8 @@ class UserLiveStatusListener implements IEventListener {
 	public function __construct(UserStatusMapper $mapper,
 		StatusService $statusService,
 		ITimeFactory $timeFactory,
-		private CalendarStatusService $calendarStatusService) {
+		private CalendarStatusService $calendarStatusService,
+		private LoggerInterface $logger) {
 		$this->mapper = $mapper;
 		$this->statusService = $statusService;
 		$this->timeFactory = $timeFactory;
@@ -110,7 +113,19 @@ class UserLiveStatusListener implements IEventListener {
 			$userStatus->setIsUserDefined(false);
 
 			if ($userStatus->getId() === null) {
-				$this->mapper->insert($userStatus);
+				try {
+					$this->mapper->insert($userStatus);
+				} catch (Exception $e) {
+					if ($e->getReason() === Exception::REASON_UNIQUE_CONSTRAINT_VIOLATION) {
+						// A different process might have written another status
+						// update to the DB while we're processing our stuff.
+						// We can safely ignore it as we're only changing between AWAY and ONLINE
+						// and not doing anything with the message or icon.
+						$this->logger->debug('Unique constraint violation for live user status', ['exception' => $e]);
+						return;
+					}
+					throw $e;
+				}
 			} else {
 				$this->mapper->update($userStatus);
 			}

apps/user_status/tests/Unit/Listener/UserLiveStatusListenerTest.php

@@ -38,6 +38,7 @@ use OCP\EventDispatcher\GenericEvent;
 use OCP\IUser;
 use OCP\User\Events\UserLiveStatusEvent;
 use PHPUnit\Framework\MockObject\MockObject;
+use Psr\Log\LoggerInterface;
 use Test\TestCase;
 
 class UserLiveStatusListenerTest extends TestCase {
@@ -54,6 +55,8 @@ class UserLiveStatusListenerTest extends TestCase {
 
 	private CalendarStatusService|MockObject $calendarStatusService;
 
+	private LoggerInterface|MockObject $logger;
+
 	protected function setUp(): void {
 		parent::setUp();
 
@@ -61,12 +64,14 @@ class UserLiveStatusListenerTest extends TestCase {
 		$this->statusService = $this->createMock(StatusService::class);
 		$this->timeFactory = $this->createMock(ITimeFactory::class);
 		$this->calendarStatusService = $this->createMock(CalendarStatusService::class);
+		$this->logger = $this->createMock(LoggerInterface::class);
 
 		$this->listener = new UserLiveStatusListener(
 			$this->mapper,
 			$this->statusService,
 			$this->timeFactory,
 			$this->calendarStatusService,
+			$this->logger,
 		);
 	}