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<?php |
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namespace hiapi\event; |
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use League\Event\AbstractListener; |
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use League\Event\EventInterface; |
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use PhpAmqpLib\Connection\AMQPStreamConnection; |
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use PhpAmqpLib\Channel\AMQPChannel; |
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use PhpAmqpLib\Message\AMQPMessage; |
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use Psr\Log\LoggerInterface; |
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use yii\base\InvalidConfigException; |
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/** |
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* Class PublishToQueueListener |
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* |
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* @author Dmytro Naumenko <[email protected]> |
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*/ |
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class PublishToQueueListener extends AbstractListener |
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{ |
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/** |
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* @var AMQPStreamConnection |
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*/ |
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protected $amqp; |
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/** |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* @var AMQPChannel |
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*/ |
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protected $channel; |
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/** |
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* @var string the queue name for the published messages |
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*/ |
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public $queue; |
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/** |
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* @var int|null When number is passed, Priority queues are supported with the maximum priority as set. |
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* `null` disables priority queue support |
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*/ |
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public $maxPriority = null; |
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public function __construct(AMQPStreamConnection $amqp, LoggerInterface $logger) |
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{ |
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$this->amqp = $amqp; |
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$this->logger = $logger; |
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} |
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/** |
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* Handle an event. |
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* @param EventInterface $event |
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* @return void |
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*/ |
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public function handle(EventInterface $event): void |
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{ |
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if ($this->queue === null) { |
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throw new \RuntimeException('Property PublishToQueueListener::queue must be set'); |
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} |
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try { |
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$message = $this->createMessage($event); |
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$this->getChannel()->basic_publish($message, '', $this->queue); |
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} catch (InvalidConfigException $exception) { |
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$this->logger->critical($exception->getMessage()); |
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} |
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} |
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protected function getChannel(): AMQPChannel |
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{ |
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if ($this->channel === null) { |
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$this->channel = $channel = $this->amqp->channel(); |
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$table = new \PhpAmqpLib\Wire\AMQPTable(); |
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if ($this->maxPriority !== null) { |
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$table->set('x-max-priority', $this->maxPriority); |
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} |
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$channel->queue_declare($this->queue, false, true, false, false, false, $table); |
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} |
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return $this->channel; |
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} |
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private function createMessage($event): AMQPMessage |
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{ |
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if (!$event instanceof \JsonSerializable) { |
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throw new InvalidConfigException('Event "' . get_class($event) . '" can not be sent to queue'); |
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} |
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$options = []; |
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if ($this->maxPriority !== null && $event instanceof PriorityEventInterface) { |
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if ($event->getPriority() > $this->maxPriority) { |
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throw new InvalidConfigException('Event "' . get_class($event) . '" priority is above supported maximum'); |
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} |
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$options['priority'] = $event->getPriority(); |
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} |
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return new AMQPMessage( |
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json_encode($event->jsonSerialize(), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES), |
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array_merge([ |
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'delivery_mode' => AMQPMessage::DELIVERY_MODE_PERSISTENT, |
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'content_type' => 'application/json', |
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], $options) |
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); |
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} |
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} |
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hiqdev /
hiapi
Loading history...
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: