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<?php |
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/* |
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* This file is part of php-task library. |
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* |
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* (c) php-task |
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* |
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* This source file is subject to the MIT license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace Task\Runner; |
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use Symfony\Component\EventDispatcher\EventDispatcherInterface; |
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use Task\Event\Events; |
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use Task\Event\TaskExecutionEvent; |
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use Task\Handler\TaskHandlerFactoryInterface; |
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use Task\Storage\TaskExecutionRepositoryInterface; |
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use Task\TaskStatus; |
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/** |
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* Executes scheduled tasks. |
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*/ |
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class TaskRunner implements TaskRunnerInterface |
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{ |
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/** |
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* @var TaskExecutionRepositoryInterface |
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*/ |
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private $taskExecutionRepository; |
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/** |
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* @var TaskHandlerFactoryInterface |
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*/ |
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private $taskHandlerFactory; |
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/** |
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* @var EventDispatcherInterface |
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*/ |
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private $eventDispatcher; |
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/** |
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* @param TaskExecutionRepositoryInterface $executionRepository |
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* @param TaskHandlerFactoryInterface $taskHandlerFactory |
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* @param EventDispatcherInterface $eventDispatcher |
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*/ |
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public function __construct( |
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TaskExecutionRepositoryInterface $executionRepository, |
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TaskHandlerFactoryInterface $taskHandlerFactory, |
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EventDispatcherInterface $eventDispatcher |
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) { |
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$this->taskExecutionRepository = $executionRepository; |
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$this->taskHandlerFactory = $taskHandlerFactory; |
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$this->eventDispatcher = $eventDispatcher; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function runTasks() |
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{ |
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$executions = $this->taskExecutionRepository->findScheduled(); |
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foreach ($executions as $execution) { |
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$handler = $this->taskHandlerFactory->create($execution->getHandlerClass()); |
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$start = microtime(true); |
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$execution->setStartTime(new \DateTime()); |
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$execution->setStatus(TaskStatus::RUNNING); |
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$this->taskExecutionRepository->save($execution); |
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try { |
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$this->eventDispatcher->dispatch( |
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Events::TASK_BEFORE, |
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new TaskExecutionEvent($execution->getTask(), $execution) |
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); |
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$result = $handler->handle($execution->getWorkload()); |
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$execution->setStatus(TaskStatus::COMPLETED); |
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$execution->setResult($result); |
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$this->eventDispatcher->dispatch( |
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Events::TASK_PASSED, |
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new TaskExecutionEvent($execution->getTask(), $execution) |
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); |
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} catch (\Exception $ex) { |
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$execution->setException($ex->__toString()); |
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$execution->setStatus(TaskStatus::FAILED); |
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$this->eventDispatcher->dispatch( |
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Events::TASK_FAILED, |
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new TaskExecutionEvent($execution->getTask(), $execution) |
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); |
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} |
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$execution->setEndTime(new \DateTime()); |
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$execution->setDuration(microtime(true) - $start); |
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$this->eventDispatcher->dispatch( |
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Events::TASK_FINISHED, |
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new TaskExecutionEvent($execution->getTask(), $execution) |
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); |
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$this->taskExecutionRepository->save($execution); |
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} |
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} |
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} |
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