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<?php |
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namespace Equip\BeanstalkdConsumer; |
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use Aura\Cli\Stdio; |
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use Aura\Cli\Context; |
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use Aura\Cli\Status; |
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use Relay\ResolverInterface; |
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use Pheanstalk\Pheanstalk; |
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class Daemon |
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{ |
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/** |
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* @var ResolverInterface |
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*/ |
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private $resolver; |
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/** |
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* @var Stdio |
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*/ |
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private $stdio; |
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/** |
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* @var Context |
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*/ |
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private $context; |
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/** |
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* @var Pheanstalk |
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*/ |
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private $pheanstalk; |
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/** |
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* @var callable |
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*/ |
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private $listener; |
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/** |
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* @param ResolverInterface $resolver |
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* @param Stdio $stdio |
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* @param Context $context |
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* @param Pheanstalk $pheanstalk |
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*/ |
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public function __construct( |
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ResolverInterface $resolver, |
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Stdio $stdio, |
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Context $context, |
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Pheanstalk $pheanstalk |
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) { |
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$this->resolver = $resolver; |
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$this->stdio = $stdio; |
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$this->context = $context; |
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$this->pheanstalk = $pheanstalk; |
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$this->listener = function () { return true; }; |
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} |
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/** |
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* @param callable $listener |
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*/ |
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public function setListener(callable $listener) |
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{ |
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$this->listener = $listener; |
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} |
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/** |
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* @return int Status code to exit with |
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*/ |
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public function run() |
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{ |
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$env = $this->context->env; |
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$tube = $env->get('BEANSTALKD_TUBE') ?: 'default'; |
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$class = $env->get('BEANSTALKD_CONSUMER'); |
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if (!$class) { |
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1 |
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$this->stdio->outln('<<red>>BEANSTALKD_CONSUMER environmental variable is not set<<reset>>'); |
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return Status::USAGE; |
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} |
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if (!class_exists($class)) { |
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$this->stdio->outln(sprintf('<<red>>BEANSTALKD_CONSUMER does not reference a locatable class: %s<<reset>>', $class)); |
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return Status::DATAERR; |
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} |
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if (!in_array(ConsumerInterface::class, class_implements($class))) { |
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$this->stdio->outln(sprintf('<<red>>BEANSTALKD_CONSUMER references a class that does not implement ConsumerInterface: %s<<reset>>', $class)); |
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return Status::DATAERR; |
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} |
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$this->pheanstalk->watchOnly($tube); |
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$consumer = call_user_func($this->resolver, $class); |
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while (call_user_func($this->listener)) { |
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$reserved = $this->pheanstalk->reserve(); |
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if (!$reserved) { |
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continue; |
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} |
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$job = new Job($reserved->getId(), $reserved->getData()); |
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try { |
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$result = $consumer->consume($job); |
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if ($result === false) { |
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$this->pheanstalk->release($job); |
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continue; |
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} |
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} catch (\Exception $e) { |
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$this->pheanstalk->release($job); |
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throw $e; |
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} |
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$this->pheanstalk->delete($job); |
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} |
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return Status::SUCCESS; |
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} |
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} |
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equip /
beanstalkd-consumer
Let’s take a look at an example: