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<?php |
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namespace Disque\Queue; |
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use DateTime; |
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use DateTimeZone; |
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use Disque\Client; |
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use Disque\Queue\Marshal\JobMarshaler; |
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use Disque\Queue\Marshal\MarshalerInterface; |
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use InvalidArgumentException; |
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use Disque\Command\Response\JobsResponse AS Response; |
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use Disque\Command\Response\JobsWithCountersResponse AS Counters; |
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class Queue |
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{ |
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const DEFAULT_JOB_TIMEZONE = 'UTC'; |
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/** |
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* Client |
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* |
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* @var Client |
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*/ |
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protected $client; |
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/** |
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* Name |
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* |
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* @var string |
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*/ |
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protected $name; |
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/** |
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* Job marshaler |
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* |
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* @var MarshalerInterface |
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*/ |
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private $marshaler; |
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/** |
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* Default time zone |
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* |
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* @var DateTimeZone |
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*/ |
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private $timeZone; |
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/** |
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* Create a queue |
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* |
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* @param Client $client Client |
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* @param string $name Queue name |
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*/ |
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public function __construct(Client $client, $name) |
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{ |
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$this->client = $client; |
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$this->name = $name; |
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$this->setMarshaler(new JobMarshaler()); |
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} |
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/** |
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* Get the queue name |
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* |
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* @return string |
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*/ |
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public function getName() |
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{ |
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return $this->name; |
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} |
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/** |
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* Set Job marshaler |
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* |
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* @param MarshalerInterface Marshaler |
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* @return void |
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*/ |
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public function setMarshaler(MarshalerInterface $marshaler) |
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{ |
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$this->marshaler = $marshaler; |
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} |
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/** |
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* Pushes a job into the queue, setting it to be up for processing only at |
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* the specific date & time. |
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* |
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* @param JobInterface $job Job |
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* @param DateTime $when Date & time on when job should be ready for processing |
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* @param array $options ADDJOB options sent to the client |
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* @return JobInterface Job pushed |
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* @throws InvalidArgumentException |
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*/ |
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public function schedule(JobInterface $job, DateTime $when, array $options = []) |
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{ |
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if (!isset($this->timeZone)) { |
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$this->timeZone = new DateTimeZone(self::DEFAULT_JOB_TIMEZONE); |
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} |
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$date = clone($when); |
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$date->setTimeZone($this->timeZone); |
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$now = new DateTime('now', $this->timeZone); |
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if ($date < $now) { |
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throw new InvalidArgumentException('Specified schedule time has passed'); |
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} |
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$options['delay'] = ($date->getTimestamp() - $now->getTimestamp()); |
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return $this->push($job, $options); |
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} |
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/** |
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* Pushes a job into the queue |
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* |
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* @param JobInterface $job Job |
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* @param array $options ADDJOB options sent to the client |
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* @return JobInterface Job pushed |
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*/ |
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public function push(JobInterface $job, array $options = []) |
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{ |
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$this->checkConnected(); |
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$id = $this->client->addJob($this->name, $this->marshaler->marshal($job), $options); |
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$job->setId($id); |
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return $job; |
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} |
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/** |
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* Pulls a single job from the queue (if none available, and if $timeout |
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* specified, then wait only this much time for a job, otherwise return |
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* `null`) |
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* |
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* @param int $timeout If specified, wait these many seconds |
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* @return Job|null A job, or null if no job was found before timeout |
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*/ |
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public function pull($timeout = 0) |
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{ |
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$this->checkConnected(); |
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$jobs = $this->client->getJob($this->name, [ |
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'timeout' => $timeout, |
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'count' => 1, |
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'withcounters' => true |
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]); |
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if (empty($jobs)) { |
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return null; |
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} |
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$jobData = $jobs[0]; |
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$job = $this->marshaler->unmarshal($jobData[Response::KEY_BODY]); |
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$job->setId($jobData[Response::KEY_ID]); |
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$job->setNacks($jobData[Counters::KEY_NACKS]); |
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$job->setAdditionalDeliveries( |
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$jobData[Counters::KEY_ADDITIONAL_DELIVERIES] |
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); |
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return $job; |
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} |
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/** |
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* Marks that a Job is still being processed |
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* |
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* @param JobInterface $job Job |
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* @return int Number of seconds that the job visibility was postponed |
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*/ |
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public function processing(JobInterface $job) |
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{ |
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$this->checkConnected(); |
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return $this->client->working($job->getId()); |
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} |
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/** |
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* Acknowledges a Job as properly handled |
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* |
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* @param JobInterface $job Job |
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* @return void |
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*/ |
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public function processed(JobInterface $job) |
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{ |
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$this->checkConnected(); |
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$this->client->ackJob($job->getId()); |
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} |
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/** |
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* Marks the job as failed and returns it to the queue |
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* |
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* This increases the NACK counter of the job |
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* |
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* @param JobInterface $job |
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* @return void |
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*/ |
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public function failed(JobInterface $job) |
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{ |
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$this->checkConnected(); |
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$this->client->nack($job->getId()); |
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} |
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/** |
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* Check that we are connected to a node, and if not connect |
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* |
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* @return void |
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* @throws Disque\Connection\ConnectionException |
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*/ |
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private function checkConnected() |
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{ |
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if (!$this->client->isConnected()) { |
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$this->client->connect(); |
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} |
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} |
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} |
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