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<?php |
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namespace Equip\Queue; |
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use Equip\Command\OptionsInterface; |
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use Equip\Queue\Driver\DriverInterface; |
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use Equip\Queue\Command\CommandFactoryInterface; |
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use Exception; |
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class Worker |
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{ |
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/** |
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* @var DriverInterface |
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*/ |
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private $driver; |
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/** |
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* @var Event |
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*/ |
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private $event; |
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/** |
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* @var CommandFactoryInterface |
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*/ |
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private $commands; |
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/** |
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* @param DriverInterface $driver |
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* @param Event $event |
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* @param CommandFactoryInterface $commands |
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*/ |
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public function __construct( |
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DriverInterface $driver, |
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Event $event, |
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CommandFactoryInterface $commands |
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) { |
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$this->driver = $driver; |
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$this->event = $event; |
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$this->commands = $commands; |
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} |
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/** |
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* Consumes messages off of the queue |
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* |
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* @param string $queue |
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*/ |
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public function consume($queue) |
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{ |
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while ($this->tick($queue)) { /* NOOP */ } |
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} |
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/** |
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* Handles fetching messages from the queue |
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* |
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* @param string $queue |
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* |
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* @return bool |
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*/ |
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protected function tick($queue) |
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{ |
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$packet = $this->driver->dequeue($queue); |
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if (empty($packet)) { |
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return true; |
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} |
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try { |
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list($command, $options) = array_values(unserialize($packet)); |
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if ($this->invoke($command, $options) === false) { |
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$this->event->shutdown($command); |
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return false; |
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} |
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} catch (Exception $exception) { |
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$this->event->reject($command, $options, $exception); |
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} |
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return true; |
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} |
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/** |
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* Invoke the command with the options |
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* |
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* @param string $command |
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* @param OptionsInterface $options |
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* |
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* @return mixed |
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*/ |
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private function invoke($command, OptionsInterface $options) |
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{ |
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$this->event->acknowledge($command, $options); |
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$result = $this->commands |
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->make($command) |
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->withOptions($options) |
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->execute(); |
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$this->event->finish($command, $options); |
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return $result; |
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} |
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} |
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equip /
queue
