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<?php
namespace Illuminate\Queue;
use Illuminate\Support\Arr;
use Illuminate\Support\Str;
use Illuminate\Redis\Database;
use Illuminate\Queue\Jobs\RedisJob;
use Illuminate\Contracts\Queue\Queue as QueueContract;
class RedisQueue extends Queue implements QueueContract
{
/**
* The Redis database instance.
*
* @var \Illuminate\Redis\Database
*/
protected $redis;
/**
* The connection name.
*
* @var string
*/
protected $connection;
/**
* The name of the default queue.
*
* @var string
*/
protected $default;
/**
* The expiration time of a job.
*
* @var int|null
*/
protected $expire = 60;
/**
* Create a new Redis queue instance.
*
* @param \Illuminate\Redis\Database $redis
* @param string $default
* @param string $connection
* @return void
*/
public function __construct(Database $redis, $default = 'default', $connection = null)
{
$this->redis = $redis;
$this->default = $default;
$this->connection = $connection;
}
/**
* Push a new job onto the queue.
*
* @param string $job
* @param mixed $data
* @param string $queue
* @return mixed
*/
public function push($job, $data = '', $queue = null)
{
return $this->pushRaw($this->createPayload($job, $data), $queue);
}
/**
* Push a raw payload onto the queue.
*
* @param string $payload
* @param string $queue
* @param array $options
* @return mixed
*/
public function pushRaw($payload, $queue = null, array $options = [])
{
$this->getConnection()->rpush($this->getQueue($queue), $payload);
return Arr::get(json_decode($payload, true), 'id');
}
/**
* Push a new job onto the queue after a delay.
*
* @param \DateTime|int $delay
* @param string $job
* @param mixed $data
* @param string $queue
* @return mixed
*/
public function later($delay, $job, $data = '', $queue = null)
{
$payload = $this->createPayload($job, $data);
$delay = $this->getSeconds($delay);
$this->getConnection()->zadd($this->getQueue($queue).':delayed', $this->getTime() + $delay, $payload);
return Arr::get(json_decode($payload, true), 'id');
}
/**
* Release a reserved job back onto the queue.
*
* @param string $queue
* @param string $payload
* @param int $delay
* @param int $attempts
* @return void
*/
public function release($queue, $payload, $delay, $attempts)
{
$payload = $this->setMeta($payload, 'attempts', $attempts);
$this->getConnection()->zadd($this->getQueue($queue).':delayed', $this->getTime() + $delay, $payload);
}
/**
* Pop the next job off of the queue.
*
* @param string $queue
* @return \Illuminate\Contracts\Queue\Job|null
*/
public function pop($queue = null)
{
$original = $queue ?: $this->default;
$queue = $this->getQueue($queue);
if (! is_null($this->expire)) {
$this->migrateAllExpiredJobs($queue);
}
$job = $this->getConnection()->lpop($queue);
if (! is_null($job)) {
$this->getConnection()->zadd($queue.':reserved', $this->getTime() + $this->expire, $job);
return new RedisJob($this->container, $this, $job, $original);
}
}
/**
* Delete a reserved job from the queue.
*
* @param string $queue
* @param string $job
* @return void
*/
public function deleteReserved($queue, $job)
{
$this->getConnection()->zrem($this->getQueue($queue).':reserved', $job);
}
/**
* Migrate all of the waiting jobs in the queue.
*
* @param string $queue
* @return void
*/
protected function migrateAllExpiredJobs($queue)
{
$this->migrateExpiredJobs($queue.':delayed', $queue);
$this->migrateExpiredJobs($queue.':reserved', $queue);
}
/**
* Migrate the delayed jobs that are ready to the regular queue.
*
* @param string $from
* @param string $to
* @return void
*/
public function migrateExpiredJobs($from, $to)
{
$options = ['cas' => true, 'watch' => $from, 'retry' => 10];
$this->getConnection()->transaction($options, function ($transaction) use ($from, $to) {
// First we need to get all of jobs that have expired based on the current time
// so that we can push them onto the main queue. After we get them we simply
// remove them from this "delay" queues. All of this within a transaction.
$jobs = $this->getExpiredJobs(
$transaction, $from, $time = $this->getTime()
);
// If we actually found any jobs, we will remove them from the old queue and we
// will insert them onto the new (ready) "queue". This means they will stand
// ready to be processed by the queue worker whenever their turn comes up.
if (count($jobs) > 0) {
$this->removeExpiredJobs($transaction, $from, $time);
$this->pushExpiredJobsOntoNewQueue($transaction, $to, $jobs);
}
});
}
/**
* Get the expired jobs from a given queue.
*
* @param \Predis\Transaction\MultiExec $transaction
* @param string $from
* @param int $time
* @return array
*/
protected function getExpiredJobs($transaction, $from, $time)
{
return $transaction->zrangebyscore($from, '-inf', $time);
}
/**
* Remove the expired jobs from a given queue.
*
* @param \Predis\Transaction\MultiExec $transaction
* @param string $from
* @param int $time
* @return void
*/
protected function removeExpiredJobs($transaction, $from, $time)
{
$transaction->multi();
$transaction->zremrangebyscore($from, '-inf', $time);
}
/**
* Push all of the given jobs onto another queue.
*
* @param \Predis\Transaction\MultiExec $transaction
* @param string $to
* @param array $jobs
* @return void
*/
protected function pushExpiredJobsOntoNewQueue($transaction, $to, $jobs)
{
call_user_func_array([$transaction, 'rpush'], array_merge([$to], $jobs));
}
/**
* Create a payload string from the given job and data.
*
* @param string $job
* @param mixed $data
* @param string $queue
* @return string
*/
protected function createPayload($job, $data = '', $queue = null)
{
$payload = parent::createPayload($job, $data);
$payload = $this->setMeta($payload, 'id', $this->getRandomId());
return $this->setMeta($payload, 'attempts', 1);
}
/**
* Get a random ID string.
*
* @return string
*/
protected function getRandomId()
{
return Str::random(32);
}
/**
* Get the queue or return the default.
*
* @param string|null $queue
* @return string
*/
protected function getQueue($queue)
{
return 'queues:'.($queue ?: $this->default);
}
/**
* Get the connection for the queue.
*
* @return \Predis\ClientInterface
*/
protected function getConnection()
{
return $this->redis->connection($this->connection);
}
/**
* Get the underlying Redis instance.
*
* @return \Illuminate\Redis\Database
*/
public function getRedis()
{
return $this->redis;
}
/**
* Get the expiration time in seconds.
*
* @return int|null
*/
public function getExpire()
{
return $this->expire;
}
/**
* Set the expiration time in seconds.
*
* @param int|null $seconds
* @return void
*/
public function setExpire($seconds)
{
$this->expire = $seconds;
}
}