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<?php
namespace Illuminate\Queue;
use Illuminate\Contracts\Queue\ClearableQueue;
use Illuminate\Contracts\Queue\Queue as QueueContract;
use Illuminate\Database\Connection;
use Illuminate\Queue\Jobs\DatabaseJob;
use Illuminate\Queue\Jobs\DatabaseJobRecord;
use Illuminate\Support\Carbon;
use PDO;
class DatabaseQueue extends Queue implements QueueContract, ClearableQueue
{
/**
* The database connection instance.
*
* @var \Illuminate\Database\Connection
*/
protected $database;
/**
* The database table that holds the jobs.
*
* @var string
*/
protected $table;
/**
* The name of the default queue.
*
* @var string
*/
protected $default;
/**
* The expiration time of a job.
*
* @var int|null
*/
protected $retryAfter = 60;
/**
* Create a new database queue instance.
*
* @param \Illuminate\Database\Connection $database
* @param string $table
* @param string $default
* @param int $retryAfter
* @param bool $dispatchAfterCommit
* @return void
*/
public function __construct(Connection $database,
$table,
$default = 'default',
$retryAfter = 60,
$dispatchAfterCommit = false)
{
$this->table = $table;
$this->default = $default;
$this->database = $database;
$this->retryAfter = $retryAfter;
$this->dispatchAfterCommit = $dispatchAfterCommit;
}
/**
* Get the size of the queue.
*
* @param string|null $queue
* @return int
*/
public function size($queue = null)
{
return $this->database->table($this->table)
->where('queue', $this->getQueue($queue))
->count();
}
/**
* Push a new job onto the queue.
*
* @param string $job
* @param mixed $data
* @param string|null $queue
* @return mixed
*/
public function push($job, $data = '', $queue = null)
{
return $this->enqueueUsing(
$job,
$this->createPayload($job, $this->getQueue($queue), $data),
$queue,
null,
function ($payload, $queue) {
return $this->pushToDatabase($queue, $payload);
}
);
}
/**
* Push a raw payload onto the queue.
*
* @param string $payload
* @param string|null $queue
* @param array $options
* @return mixed
*/
public function pushRaw($payload, $queue = null, array $options = [])
{
return $this->pushToDatabase($queue, $payload);
}
/**
* Push a new job onto the queue after a delay.
*
* @param \DateTimeInterface|\DateInterval|int $delay
* @param string $job
* @param mixed $data
* @param string|null $queue
* @return void
*/
public function later($delay, $job, $data = '', $queue = null)
{
return $this->enqueueUsing(
$job,
$this->createPayload($job, $this->getQueue($queue), $data),
$queue,
$delay,
function ($payload, $queue, $delay) {
return $this->pushToDatabase($queue, $payload, $delay);
}
);
}
/**
* Push an array of jobs onto the queue.
*
* @param array $jobs
* @param mixed $data
* @param string|null $queue
* @return mixed
*/
public function bulk($jobs, $data = '', $queue = null)
{
$queue = $this->getQueue($queue);
$availableAt = $this->availableAt();
return $this->database->table($this->table)->insert(collect((array) $jobs)->map(
function ($job) use ($queue, $data, $availableAt) {
return $this->buildDatabaseRecord($queue, $this->createPayload($job, $this->getQueue($queue), $data), $availableAt);
}
)->all());
}
/**
* Release a reserved job back onto the queue.
*
* @param string $queue
* @param \Illuminate\Queue\Jobs\DatabaseJobRecord $job
* @param int $delay
* @return mixed
*/
public function release($queue, $job, $delay)
{
return $this->pushToDatabase($queue, $job->payload, $delay, $job->attempts);
}
/**
* Push a raw payload to the database with a given delay.
*
* @param string|null $queue
* @param string $payload
* @param \DateTimeInterface|\DateInterval|int $delay
* @param int $attempts
* @return mixed
*/
protected function pushToDatabase($queue, $payload, $delay = 0, $attempts = 0)
{
return $this->database->table($this->table)->insertGetId($this->buildDatabaseRecord(
$this->getQueue($queue), $payload, $this->availableAt($delay), $attempts
));
}
/**
* Create an array to insert for the given job.
*
* @param string|null $queue
* @param string $payload
* @param int $availableAt
* @param int $attempts
* @return array
*/
protected function buildDatabaseRecord($queue, $payload, $availableAt, $attempts = 0)
{
return [
'queue' => $queue,
'attempts' => $attempts,
'reserved_at' => null,
'available_at' => $availableAt,
'created_at' => $this->currentTime(),
'payload' => $payload,
];
}
/**
* Pop the next job off of the queue.
*
* @param string|null $queue
* @return \Illuminate\Contracts\Queue\Job|null
*
* @throws \Throwable
*/
public function pop($queue = null)
{
$queue = $this->getQueue($queue);
return $this->database->transaction(function () use ($queue) {
if ($job = $this->getNextAvailableJob($queue)) {
return $this->marshalJob($queue, $job);
}
});
}
/**
* Get the next available job for the queue.
*
* @param string|null $queue
* @return \Illuminate\Queue\Jobs\DatabaseJobRecord|null
*/
protected function getNextAvailableJob($queue)
{
$job = $this->database->table($this->table)
->lock($this->getLockForPopping())
->where('queue', $this->getQueue($queue))
->where(function ($query) {
$this->isAvailable($query);
$this->isReservedButExpired($query);
})
->orderBy('id', 'asc')
->first();
return $job ? new DatabaseJobRecord((object) $job) : null;
}
/**
* Get the lock required for popping the next job.
*
* @return string|bool
*/
protected function getLockForPopping()
{
$databaseEngine = $this->database->getPdo()->getAttribute(PDO::ATTR_DRIVER_NAME);
$databaseVersion = $this->database->getConfig('version') ?? $this->database->getPdo()->getAttribute(PDO::ATTR_SERVER_VERSION);
if ($databaseEngine === 'mysql' && ! strpos($databaseVersion, 'MariaDB') && version_compare($databaseVersion, '8.0.1', '>=') ||
$databaseEngine === 'pgsql' && version_compare($databaseVersion, '9.5', '>=')) {
return 'FOR UPDATE SKIP LOCKED';
}
return true;
}
/**
* Modify the query to check for available jobs.
*
* @param \Illuminate\Database\Query\Builder $query
* @return void
*/
protected function isAvailable($query)
{
$query->where(function ($query) {
$query->whereNull('reserved_at')
->where('available_at', '<=', $this->currentTime());
});
}
/**
* Modify the query to check for jobs that are reserved but have expired.
*
* @param \Illuminate\Database\Query\Builder $query
* @return void
*/
protected function isReservedButExpired($query)
{
$expiration = Carbon::now()->subSeconds($this->retryAfter)->getTimestamp();
$query->orWhere(function ($query) use ($expiration) {
$query->where('reserved_at', '<=', $expiration);
});
}
/**
* Marshal the reserved job into a DatabaseJob instance.
*
* @param string $queue
* @param \Illuminate\Queue\Jobs\DatabaseJobRecord $job
* @return \Illuminate\Queue\Jobs\DatabaseJob
*/
protected function marshalJob($queue, $job)
{
$job = $this->markJobAsReserved($job);
return new DatabaseJob(
$this->container, $this, $job, $this->connectionName, $queue
);
}
/**
* Mark the given job ID as reserved.
*
* @param \Illuminate\Queue\Jobs\DatabaseJobRecord $job
* @return \Illuminate\Queue\Jobs\DatabaseJobRecord
*/
protected function markJobAsReserved($job)
{
$this->database->table($this->table)->where('id', $job->id)->update([
'reserved_at' => $job->touch(),
'attempts' => $job->increment(),
]);
return $job;
}
/**
* Delete a reserved job from the queue.
*
* @param string $queue
* @param string $id
* @return void
*
* @throws \Throwable
*/
public function deleteReserved($queue, $id)
{
$this->database->transaction(function () use ($id) {
if ($this->database->table($this->table)->lockForUpdate()->find($id)) {
$this->database->table($this->table)->where('id', $id)->delete();
}
});
}
/**
* Delete a reserved job from the reserved queue and release it.
*
* @param string $queue
* @param \Illuminate\Queue\Jobs\DatabaseJob $job
* @param int $delay
* @return void
*/
public function deleteAndRelease($queue, $job, $delay)
{
$this->database->transaction(function () use ($queue, $job, $delay) {
if ($this->database->table($this->table)->lockForUpdate()->find($job->getJobId())) {
$this->database->table($this->table)->where('id', $job->getJobId())->delete();
}
$this->release($queue, $job->getJobRecord(), $delay);
});
}
/**
* Delete all of the jobs from the queue.
*
* @param string $queue
* @return int
*/
public function clear($queue)
{
return $this->database->table($this->table)
->where('queue', $this->getQueue($queue))
->delete();
}
/**
* Get the queue or return the default.
*
* @param string|null $queue
* @return string
*/
public function getQueue($queue)
{
return $queue ?: $this->default;
}
/**
* Get the underlying database instance.
*
* @return \Illuminate\Database\Connection
*/
public function getDatabase()
{
return $this->database;
}
}