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<?php |
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namespace Dtc\QueueBundle\Manager; |
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use Dtc\QueueBundle\Exception\PriorityException; |
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use Dtc\QueueBundle\Model\RetryableJob; |
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use Dtc\QueueBundle\Model\Job; |
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abstract class PriorityJobManager extends RetryableJobManager |
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{ |
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const PRIORITY_ASC = 'asc'; |
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const PRIORITY_DESC = 'desc'; |
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protected $maxPriority; |
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protected $priorityDirection = self::PRIORITY_DESC; |
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/** |
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* @return mixed |
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*/ |
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public function getMaxPriority() |
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{ |
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return $this->maxPriority; |
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} |
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/** |
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* @param mixed $maxPriority |
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*/ |
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public function setMaxPriority($maxPriority) |
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{ |
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$this->maxPriority = $maxPriority; |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getPriorityDirection() |
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{ |
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return $this->priorityDirection; |
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} |
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/** |
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* @param mixed $priorityDirection |
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*/ |
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public function setPriorityDirection($priorityDirection) |
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{ |
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$this->priorityDirection = $priorityDirection; |
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} |
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protected function validatePriority($priority) |
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{ |
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if (null === $priority) { |
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return; |
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} |
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if (!ctype_digit(strval($priority))) { |
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throw new PriorityException("Priority ($priority) needs to be a positive integer"); |
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} |
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if (strval(intval($priority)) !== strval($priority)) { |
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throw new PriorityException("Priority ($priority) needs to be less than ".PHP_INT_MAX); |
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} |
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$maxPriority = $this->getMaxPriority(); |
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if (intval($priority) > $maxPriority) { |
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throw new PriorityException("Priority ($priority) must be less than ".$maxPriority); |
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} |
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} |
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/** |
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* Returns the prioirty in ASCENDING order regardless of the User's choice of direction |
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* (for storing RabbitMQ, Mysql, others). |
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* |
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* @param $priority |
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* |
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* @return mixed |
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*/ |
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protected function calculatePriority($priority) |
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{ |
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if (null === $priority) { |
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return $priority; |
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} |
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if (self::PRIORITY_DESC === $this->priorityDirection) { |
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$priority = $this->maxPriority - $priority; |
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} |
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return $priority; |
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} |
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abstract protected function prioritySave(Job $job); |
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/** |
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* @param Job $job |
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* |
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* @throws PriorityException |
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*/ |
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protected function retryableSave(RetryableJob $job) |
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{ |
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$this->validatePriority($job->getPriority()); |
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if (!$job->getId()) { // An unsaved job needs it's priority potentially adjusted |
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$job->setPriority($this->calculatePriority($job->getPriority())); |
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} |
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$result = $this->prioritySave($job); |
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return $result; |
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} |
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} |
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mmucklo /
DtcQueueBundle
