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<?php |
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namespace yiicod\jobqueue\queues; |
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use Carbon\Carbon; |
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use DateTime; |
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use Illuminate\Contracts\Queue\Queue as QueueContract; |
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use Illuminate\Queue\Queue; |
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use yii\mongodb\Connection; |
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use yiicod\jobqueue\jobs\MongoJob; |
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/** |
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* Class MongoThreadQueue |
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* |
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* @package yiicod\jobqueue\queues |
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*/ |
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class MongoThreadQueue extends Queue implements QueueContract |
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{ |
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/** |
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* @var int |
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*/ |
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protected $limit = 15; |
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/** |
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* Create a new database queue instance. |
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* |
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* @param Connection $database |
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* @param string $table |
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* @param string $default |
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* @param int $expire |
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* @param int $limit |
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*/ |
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public function __construct(Connection $database, $table, $default = 'default', $expire = 60, $limit = 15) |
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{ |
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$this->table = $table; |
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$this->expire = $expire; |
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$this->default = $default; |
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$this->database = $database; |
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$this->limit = $limit; |
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} |
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/** |
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* Check if can run process depend on limits |
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* |
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* @param MongoJob $job |
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* |
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* @return bool |
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*/ |
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public function canRunJob(MongoJob $job) |
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{ |
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if ($job->getQueue()) { |
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return $this->getCollection()->count([ |
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'reserved' => 1, |
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'queue' => $job->getQueue(), |
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]) < $this->limit || $job->reserved(); |
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} |
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return $this->getCollection()->count(['reserved' => 1]) < $this->limit || $job->reserved(); |
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} |
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/** |
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* Get the next available job for the queue. |
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* |
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* @param $id |
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* |
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* @return null|MongoJob |
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*/ |
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public function getJobById($id) |
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{ |
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$job = $this->getCollection()->findOne(['_id' => new \MongoDB\BSON\ObjectID($id)]); |
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if (is_null($job)) { |
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return $job; |
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} else { |
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$job = (object)$job; |
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return new MongoJob($this->container, $this, $job, $job->queue); |
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} |
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} |
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/** |
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* Push a new job onto the queue. |
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* |
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* @param string $job |
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* @param mixed $data |
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* @param string $queue |
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* |
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* @return mixed |
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*/ |
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public function push($job, $data = '', $queue = null) |
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{ |
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return $this->pushToDatabase(0, $queue, $this->createPayload($job, $data)); |
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} |
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/** |
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* Push a new job onto the queue. |
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* |
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* @param string $job |
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* @param mixed $data |
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* @param string $queue |
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* |
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* @return mixed |
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*/ |
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public function exists($job, $data = '', $queue = null) |
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{ |
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return null !== $this->getCollection()->findOne([ |
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'queue' => $queue, |
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'payload' => $this->createPayload($job, $data), |
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]); |
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} |
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/** |
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* Push a raw payload onto the queue. |
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* |
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* @param string $payload |
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* @param string $queue |
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* @param array $options |
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* |
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* @return mixed |
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*/ |
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public function pushRaw($payload, $queue = null, array $options = []) |
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{ |
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return $this->pushToDatabase(0, $queue, $payload); |
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} |
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/** |
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* Push a new job onto the queue after a delay. |
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* |
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* @param DateTime|int $delay |
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* @param string $job |
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* @param mixed $data |
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* @param string $queue |
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* |
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* @return mixed |
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*/ |
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public function later($delay, $job, $data = '', $queue = null) |
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{ |
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return $this->pushToDatabase($delay, $queue, $this->createPayload($job, $data)); |
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} |
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/** |
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* Push an array of jobs onto the queue. |
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* |
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* @param array $jobs |
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* @param mixed $data |
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* @param string $queue |
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* |
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* @return mixed |
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*/ |
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public function bulk($jobs, $data = '', $queue = null) |
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{ |
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$queue = $this->getQueue($queue); |
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$availableAt = $this->getAvailableAt(0); |
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$records = array_map(function ($job) use ($queue, $data, $availableAt) { |
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return $this->buildDatabaseRecord($queue, $this->createPayload($job, $data), $availableAt); |
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}, (array)$jobs); |
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return $this->getCollection()->insert($records); |
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} |
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/** |
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* Release a reserved job back onto the queue. |
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* |
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* @param string $queue |
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* @param \StdClass $job |
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* @param int $delay |
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* |
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* @return mixed |
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*/ |
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public function release($queue, $job, $delay) |
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{ |
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return $this->pushToDatabase($delay, $queue, $job->payload, $job->attempts); |
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} |
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/** |
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* Push a raw payload to the database with a given delay. |
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* |
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* @param DateTime|int $delay |
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* @param string|null $queue |
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* @param string $payload |
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* @param int $attempts |
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* |
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* @return mixed |
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*/ |
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protected function pushToDatabase($delay, $queue, $payload, $attempts = 0) |
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{ |
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$attributes = $this->buildDatabaseRecord($this->getQueue($queue), $payload, $this->getAvailableAt($delay), $attempts); |
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return $this->getCollection()->insert($attributes); |
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} |
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/** |
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* Pop the next job off of the queue. |
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* |
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* @param string $queue |
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* |
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* @return Job|null |
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*/ |
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public function pop($queue = null) |
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{ |
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$queue = $this->getQueue($queue); |
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if ($job = $this->getNextAvailableJob($queue)) { |
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// Worker does it |
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//$this->markJobAsReserved($job); |
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return $job; //new MongoJob($this->container, $this, $job->getJob(), $queue); |
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} |
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} |
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/** |
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* Get the next available job for the queue. |
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* |
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* @param string|null $queue |
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* |
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* @return null|MongoJob |
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*/ |
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protected function getNextAvailableJob($queue) |
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{ |
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$job = $this->getCollection() |
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->findOne([ |
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'queue' => $this->getQueue($queue), |
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'$or' => [ |
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$this->isAvailable(), |
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$this->isReservedButExpired(), |
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], |
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], [], [ |
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'sort' => ['_id' => 1], |
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]); |
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return $job ? new MongoJob($this->container, $this, (object)$job, ((object)$job)->queue) : null; |
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} |
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/** |
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* Get available jobs |
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* |
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* @return array |
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*/ |
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protected function isAvailable() |
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{ |
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return [ |
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'reserved_at' => null, |
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'available_at' => ['$lte' => $this->currentTime()], |
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]; |
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} |
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/** |
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* Get reserved but expired by time jobs |
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* |
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* @return array |
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*/ |
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protected function isReservedButExpired() |
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{ |
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return [ |
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'reserved_at' => ['$lte' => Carbon::now()->subSeconds($this->expire)->getTimestamp()], |
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]; |
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} |
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/** |
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* Mark the given job ID as reserved. |
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* |
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* @param MongoJob $job |
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*/ |
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public function markJobAsReserved($job) |
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{ |
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$attempts = $job->attempts() + 1; |
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$reserved_at = $this->currentTime(); |
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$this->getCollection()->update(['_id' => new \MongoDB\BSON\ObjectID($job->getJobId())], [ |
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'$set' => [ |
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'attempts' => $attempts, |
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'reserved' => 1, |
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'reserved_at' => $reserved_at, |
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], |
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]); |
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} |
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/** |
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* Delete a reserved job from the queue. |
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* |
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* @param string $queue |
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* @param string $id |
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*/ |
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public function deleteReserved($queue, $id) |
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{ |
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return $this->getCollection()->remove(['_id' => new \MongoDB\BSON\ObjectID($id)]); |
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} |
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/** |
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* Get the "available at" UNIX timestamp. |
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* |
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* @param DateTime|int $delay |
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* |
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* @return int |
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*/ |
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protected function getAvailableAt($delay) |
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{ |
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$availableAt = $delay instanceof DateTime ? $delay : Carbon::now()->addSeconds($delay); |
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return $availableAt->getTimestamp(); |
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} |
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/** |
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* Create an array to insert for the given job. |
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* |
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* @param string|null $queue |
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* @param string $payload |
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* @param int $availableAt |
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* @param int $attempts |
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* |
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* @return array |
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*/ |
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protected function buildDatabaseRecord($queue, $payload, $availableAt, $attempts = 0) |
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{ |
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return [ |
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'queue' => $queue, |
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'payload' => $payload, |
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'attempts' => $attempts, |
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'reserved' => 0, |
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'reserved_at' => null, |
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'available_at' => $availableAt, |
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'created_at' => $this->currentTime(), |
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]; |
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} |
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/** |
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* Get the queue or return the default. |
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* |
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* @param string|null $queue |
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* |
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* @return string |
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*/ |
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protected function getQueue($queue) |
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{ |
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return $queue ?: $this->default; |
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} |
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/** |
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* Get the expiration time in seconds. |
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* |
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* @return int|null |
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*/ |
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public function getExpire() |
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{ |
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return $this->expire; |
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} |
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/** |
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* Set the expiration time in seconds. |
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* |
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* @param int|null $seconds |
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*/ |
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public function setExpire($seconds) |
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{ |
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$this->expire = $seconds; |
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} |
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/** |
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* Get the size of the queue. |
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* |
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* @param string $queue |
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* |
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* @return int |
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*/ |
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public function size($queue = null) |
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{ |
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$this->getCollection()->count(); |
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} |
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/** |
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* Get queue table |
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* |
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* @return Collection Mongo collection instance |
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*/ |
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protected function getCollection() |
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{ |
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return $this->database->getDatabase()->getCollection($this->table); |
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} |
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} |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: