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<?php |
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namespace Bernard\Queue; |
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use Bernard\Driver; |
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use Bernard\Envelope; |
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use Bernard\Serializer; |
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class PersistentQueue extends AbstractQueue |
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{ |
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protected $driver; |
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protected $serializer; |
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protected $receipts; |
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/** |
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* @param string $name |
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* @param Driver $driver |
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* @param Serializer $serializer |
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*/ |
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public function __construct($name, Driver $driver, Serializer $serializer) |
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{ |
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parent::__construct($name); |
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$this->driver = $driver; |
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$this->serializer = $serializer; |
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$this->receipts = new \SplObjectStorage(); |
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$this->register(); |
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} |
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/** |
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* Register with the driver. |
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*/ |
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public function register() |
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{ |
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$this->errorIfClosed(); |
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$this->driver->createQueue($this->name); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function count() |
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{ |
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$this->errorIfClosed(); |
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return $this->driver->countMessages($this->name); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function close() |
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{ |
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parent::close(); |
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$this->driver->removeQueue($this->name); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function enqueue(Envelope $envelope) |
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{ |
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$this->errorIfClosed(); |
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$this->driver->pushMessage($this->name, $this->serializer->serialize($envelope)); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function acknowledge(Envelope $envelope) |
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{ |
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$this->errorIfClosed(); |
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if ($this->receipts->contains($envelope)) { |
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$this->driver->acknowledgeMessage($this->name, $this->receipts[$envelope]); |
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$this->receipts->detach($envelope); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @param int $duration number of seconds to keep polling for messages |
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*/ |
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public function dequeue($duration = 5) |
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{ |
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$this->errorIfClosed(); |
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list($serialized, $receipt) = $this->driver->popMessage($this->name, $duration); |
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if ($serialized) { |
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$envelope = $this->serializer->unserialize($serialized); |
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$this->receipts->attach($envelope, $receipt); |
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return $envelope; |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function peek($index = 0, $limit = 20) |
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{ |
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$this->errorIfClosed(); |
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$messages = $this->driver->peekQueue($this->name, $index, $limit); |
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return array_map([$this->serializer, 'unserialize'], $messages); |
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} |
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} |
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bernardphp /
bernard
