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- <?php
- declare(strict_types=1);
- namespace OC\TextToImage;
- use OC\AppFramework\Bootstrap\Coordinator;
- use OC\TextToImage\Db\Task as DbTask;
- use OC\TextToImage\Db\TaskMapper;
- use OCP\AppFramework\Db\DoesNotExistException;
- use OCP\AppFramework\Db\MultipleObjectsReturnedException;
- use OCP\BackgroundJob\IJobList;
- use OCP\DB\Exception;
- use OCP\Files\AppData\IAppDataFactory;
- use OCP\Files\IAppData;
- use OCP\Files\NotFoundException;
- use OCP\Files\NotPermittedException;
- use OCP\IConfig;
- use OCP\IServerContainer;
- use OCP\PreConditionNotMetException;
- use OCP\TextToImage\Exception\TaskFailureException;
- use OCP\TextToImage\Exception\TaskNotFoundException;
- use OCP\TextToImage\IManager;
- use OCP\TextToImage\IProvider;
- use OCP\TextToImage\IProviderWithUserId;
- use OCP\TextToImage\Task;
- use Psr\Log\LoggerInterface;
- use RuntimeException;
- use Throwable;
- class Manager implements IManager {
-
- private ?array $providers = null;
- private IAppData $appData;
- public function __construct(
- private IServerContainer $serverContainer,
- private Coordinator $coordinator,
- private LoggerInterface $logger,
- private IJobList $jobList,
- private TaskMapper $taskMapper,
- private IConfig $config,
- IAppDataFactory $appDataFactory,
- ) {
- $this->appData = $appDataFactory->get('core');
- }
-
- public function getProviders(): array {
- $context = $this->coordinator->getRegistrationContext();
- if ($context === null) {
- return [];
- }
- if ($this->providers !== null) {
- return $this->providers;
- }
- $this->providers = [];
- foreach ($context->getTextToImageProviders() as $providerServiceRegistration) {
- $class = $providerServiceRegistration->getService();
- try {
-
- $provider = $this->serverContainer->get($class);
- $this->providers[] = $provider;
- } catch (Throwable $e) {
- $this->logger->error('Failed to load Text to image provider ' . $class, [
- 'exception' => $e,
- ]);
- }
- }
- return $this->providers;
- }
-
- public function hasProviders(): bool {
- $context = $this->coordinator->getRegistrationContext();
- if ($context === null) {
- return false;
- }
- return count($context->getTextToImageProviders()) > 0;
- }
-
- public function runTask(Task $task): void {
- $this->logger->debug('Running TextToImage Task');
- if (!$this->hasProviders()) {
- throw new PreConditionNotMetException('No text to image provider is installed that can handle this task');
- }
- $providers = $this->getPreferredProviders();
- foreach ($providers as $provider) {
- $this->logger->debug('Trying to run Text2Image provider '.$provider::class);
- try {
- $task->setStatus(Task::STATUS_RUNNING);
- $completionExpectedAt = new \DateTime('now');
- $completionExpectedAt->add(new \DateInterval('PT'.$provider->getExpectedRuntime().'S'));
- $task->setCompletionExpectedAt($completionExpectedAt);
- if ($task->getId() === null) {
- $this->logger->debug('Inserting Text2Image task into DB');
- $taskEntity = $this->taskMapper->insert(DbTask::fromPublicTask($task));
- $task->setId($taskEntity->getId());
- } else {
- $this->logger->debug('Updating Text2Image task in DB');
- $this->taskMapper->update(DbTask::fromPublicTask($task));
- }
- try {
- $folder = $this->appData->getFolder('text2image');
- } catch(NotFoundException) {
- $this->logger->debug('Creating folder in appdata for Text2Image results');
- $folder = $this->appData->newFolder('text2image');
- }
- try {
- $folder = $folder->getFolder((string) $task->getId());
- } catch(NotFoundException) {
- $this->logger->debug('Creating new folder in appdata Text2Image results folder');
- $folder = $folder->newFolder((string) $task->getId());
- }
- $this->logger->debug('Creating result files for Text2Image task');
- $resources = [];
- $files = [];
- for ($i = 0; $i < $task->getNumberOfImages(); $i++) {
- $file = $folder->newFile((string) $i);
- $files[] = $file;
- $resource = $file->write();
- if ($resource !== false && $resource !== true && is_resource($resource)) {
- $resources[] = $resource;
- } else {
- throw new RuntimeException('Text2Image generation using provider "' . $provider->getName() . '" failed: Couldn\'t open file to write.');
- }
- }
- $this->logger->debug('Calling Text2Image provider\'s generate method');
- if ($provider instanceof IProviderWithUserId) {
- $provider->setUserId($task->getUserId());
- }
- $provider->generate($task->getInput(), $resources);
- for ($i = 0; $i < $task->getNumberOfImages(); $i++) {
- if (is_resource($resources[$i])) {
-
- fclose($resources[$i]);
- }
- }
- $task->setStatus(Task::STATUS_SUCCESSFUL);
- $this->logger->debug('Updating Text2Image task in DB');
- $this->taskMapper->update(DbTask::fromPublicTask($task));
- return;
- } catch (\RuntimeException|\Throwable $e) {
- for ($i = 0; $i < $task->getNumberOfImages(); $i++) {
- if (isset($files, $files[$i])) {
- try {
- $files[$i]->delete();
- } catch(NotPermittedException $e) {
- $this->logger->warning('Failed to clean up Text2Image result file after error', ['exception' => $e]);
- }
- }
- }
- $this->logger->info('Text2Image generation using provider "' . $provider->getName() . '" failed', ['exception' => $e]);
- $task->setStatus(Task::STATUS_FAILED);
- try {
- $this->taskMapper->update(DbTask::fromPublicTask($task));
- } catch (Exception $e) {
- $this->logger->warning('Failed to update database after Text2Image error', ['exception' => $e]);
- }
- throw new TaskFailureException('Text2Image generation using provider "' . $provider->getName() . '" failed: ' . $e->getMessage(), 0, $e);
- }
- }
- $task->setStatus(Task::STATUS_FAILED);
- try {
- $this->taskMapper->update(DbTask::fromPublicTask($task));
- } catch (Exception $e) {
- $this->logger->warning('Failed to update database after Text2Image error', ['exception' => $e]);
- }
- throw new TaskFailureException('Could not run task');
- }
-
- public function scheduleTask(Task $task): void {
- if (!$this->hasProviders()) {
- throw new PreConditionNotMetException('No text to image provider is installed that can handle this task');
- }
- $this->logger->debug('Scheduling Text2Image Task');
- $task->setStatus(Task::STATUS_SCHEDULED);
- $completionExpectedAt = new \DateTime('now');
- $completionExpectedAt->add(new \DateInterval('PT'.$this->getPreferredProviders()[0]->getExpectedRuntime().'S'));
- $task->setCompletionExpectedAt($completionExpectedAt);
- $taskEntity = DbTask::fromPublicTask($task);
- $this->taskMapper->insert($taskEntity);
- $task->setId($taskEntity->getId());
- $this->jobList->add(TaskBackgroundJob::class, [
- 'taskId' => $task->getId()
- ]);
- }
-
- public function runOrScheduleTask(Task $task) : void {
- if (!$this->hasProviders()) {
- throw new PreConditionNotMetException('No text to image provider is installed that can handle this task');
- }
- $providers = $this->getPreferredProviders();
- $maxExecutionTime = (int) ini_get('max_execution_time');
-
- if ($providers[0]->getExpectedRuntime() > $maxExecutionTime * 0.8) {
- $this->scheduleTask($task);
- return;
- }
- $this->runTask($task);
- }
-
- public function deleteTask(Task $task): void {
- $taskEntity = DbTask::fromPublicTask($task);
- $this->taskMapper->delete($taskEntity);
- $this->jobList->remove(TaskBackgroundJob::class, [
- 'taskId' => $task->getId()
- ]);
- }
-
- public function getTask(int $id): Task {
- try {
- $taskEntity = $this->taskMapper->find($id);
- return $taskEntity->toPublicTask();
- } catch (DoesNotExistException $e) {
- throw new TaskNotFoundException('Could not find task with the provided id');
- } catch (MultipleObjectsReturnedException $e) {
- throw new RuntimeException('Could not uniquely identify task with given id', 0, $e);
- } catch (Exception $e) {
- throw new RuntimeException('Failure while trying to find task by id: ' . $e->getMessage(), 0, $e);
- }
- }
-
- public function getUserTask(int $id, ?string $userId): Task {
- try {
- $taskEntity = $this->taskMapper->findByIdAndUser($id, $userId);
- return $taskEntity->toPublicTask();
- } catch (DoesNotExistException $e) {
- throw new TaskNotFoundException('Could not find task with the provided id and user id');
- } catch (MultipleObjectsReturnedException $e) {
- throw new RuntimeException('Could not uniquely identify task with given id and user id', 0, $e);
- } catch (Exception $e) {
- throw new RuntimeException('Failure while trying to find task by id and user id: ' . $e->getMessage(), 0, $e);
- }
- }
-
- public function getUserTasksByApp(?string $userId, string $appId, ?string $identifier = null): array {
- try {
- $taskEntities = $this->taskMapper->findUserTasksByApp($userId, $appId, $identifier);
- return array_map(static function (DbTask $taskEntity) {
- return $taskEntity->toPublicTask();
- }, $taskEntities);
- } catch (Exception $e) {
- throw new RuntimeException('Failure while trying to find tasks by appId and identifier: ' . $e->getMessage(), 0, $e);
- }
- }
-
- private function getPreferredProviders() {
- $providers = $this->getProviders();
- $json = $this->config->getAppValue('core', 'ai.text2image_provider', '');
- if ($json !== '') {
- try {
- $id = json_decode($json, true, 512, JSON_THROW_ON_ERROR);
- $provider = current(array_filter($providers, fn ($provider) => $provider->getId() === $id));
- if ($provider !== false && $provider !== null) {
- $providers = [$provider];
- }
- } catch (\JsonException $e) {
- $this->logger->warning('Failed to decode Text2Image setting `ai.text2image_provider`', ['exception' => $e]);
- }
- }
- return $providers;
- }
- }
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