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<?php |
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namespace Bdf\QueueMessengerBundle\Transport\Handler; |
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use Bdf\Queue\Message\EnvelopeInterface as QueuedEnvelope; |
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use Bdf\Queue\Message\InteractEnvelopeInterface; |
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use Bdf\QueueMessengerBundle\Transport\Stamp\NullStampsSerializer; |
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use Bdf\QueueMessengerBundle\Transport\Stamp\StampsSerializerInterface; |
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use Symfony\Component\Messenger\Envelope; |
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use Symfony\Component\Messenger\Exception\LogicException; |
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use Symfony\Component\Messenger\MessageBusInterface; |
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use Symfony\Component\Messenger\Stamp\HandledStamp; |
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use Symfony\Component\Messenger\Stamp\ReceivedStamp; |
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/** |
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* Job for dispatch a queued command to the bus |
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* If the message do not contains a valid object as data, an InternalMessage is dispatched. |
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* |
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* If the a reply is requested on the message, |
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* a synchronised dispatch is performed, |
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* and the result is returned as reply |
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*/ |
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class MessageBusHandler |
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{ |
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/** |
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* The command dispatcher. |
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* |
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* @var MessageBusInterface |
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*/ |
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private $dispatcher; |
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/** |
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* @var StampsSerializerInterface |
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*/ |
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private $stampsSerializer; |
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/** |
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* Constructor. |
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*/ |
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public function __construct(MessageBusInterface $dispatcher, StampsSerializerInterface $stampsSerializer = null) |
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{ |
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$this->dispatcher = $dispatcher; |
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$this->stampsSerializer = $stampsSerializer ?: new NullStampsSerializer(); |
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} |
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/** |
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* Handle a queued command. |
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* |
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* @param mixed $message |
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*/ |
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public function __invoke($message, QueuedEnvelope $queuedEnvelope) |
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{ |
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$envelope = $this |
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->toEnvelope($message, $queuedEnvelope) |
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// Symfony 4.3 add transport name in constructor |
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->with(new ReceivedStamp($queuedEnvelope->connection()->getName())) |
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; |
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$this->dispatch($envelope, $queuedEnvelope); |
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} |
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/** |
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* Dispatch the envelope to the bus. |
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* |
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* If the message is replyable and a reply is requested, a synchronized call is performed and the result is returned |
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*/ |
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private function dispatch(Envelope $envelope, QueuedEnvelope $queuedEnvelope): void |
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{ |
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$envelope = $this->dispatcher->dispatch($envelope); |
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if ($queuedEnvelope instanceof InteractEnvelopeInterface && $queuedEnvelope->message()->needsReply()) { |
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/** @var HandledStamp[] $handledStamps */ |
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$handledStamps = $envelope->all(HandledStamp::class); |
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if (!$handledStamps) { |
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throw new LogicException(sprintf('Message of type "%s" was handled zero times. Exactly one handler is expected when using "%s::%s()".', \get_class($envelope->getMessage()), \get_class($this), __FUNCTION__)); |
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} |
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$queuedEnvelope->reply($handledStamps[0]->getResult()); |
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} |
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} |
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/** |
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* Get the envelope from the message payload. |
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* |
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* @param mixed $message |
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*/ |
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private function toEnvelope($message, QueuedEnvelope $queuedEnvelope): Envelope |
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{ |
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if ($message instanceof Envelope) { |
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return $message; |
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} |
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// TODO How to handle non object message |
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// if (!is_object($message)) { |
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// $message = new InternalMessage( |
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// $queuedEnvelope->message()->name() ?: $queuedEnvelope->message()->queue(), |
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// $message |
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// ); |
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// } |
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if ($stamps = $queuedEnvelope->message()->header('stamps')) { |
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return new Envelope($message, $this->stampsSerializer->deserialize($stamps)); |
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} |
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return new Envelope($message); |
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} |
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} |
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b2pweb /
bdf-queue-messenger-bundle
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.