基本信息

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   源码介绍

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<?php
namespace Barryvdh\Queue;

use Carbon\Carbon;
use DateTime;
use Illuminate\Database\Connection;
use Illuminate\Queue\DatabaseQueue;
use Illuminate\Queue\Jobs\DatabaseJob;
use Symfony\Component\Process\Process;

class AsyncQueue extends DatabaseQueue
{
    /** @var string */
    protected $binary;
    
    /** @var string */
    protected $binaryArgs;
    
    /** @var string */
    protected $connectionName;

    /**
     * @param  \Illuminate\Database\Connection  $database
	 * @param  string  $table
	 * @param  string  $default
	 * @param  int  $expire
     * @param  string  $binary
     * @param  string|array  $binaryArgs
     */
    public function __construct(Connection $database, $table, $default = 'default', $expire = 60, $binary = 'php', $binaryArgs = '', $connectionName = '')
    {
        parent::__construct($database, $table, $default, $expire);
        $this->binary = $binary;
        $this->binaryArgs = $binaryArgs;
        $this->connectionName = $connectionName;
    }

    /**
     * Push a new job onto the queue.
     *
     * @param string      $job
     * @param mixed       $data
     * @param string|null $queue
     *
     * @return int
     */
    public function push($job, $data = '', $queue = null)
    {
        $id = parent::push($job, $data, $queue);
        $this->startProcess($id);

        return $id;
    }
    
    /**
	 * 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 = array())
	{
		$id = parent::pushRaw($payload, $queue, $options);
        $this->startProcess($id);

        return $id;
	}
    
    /**
     * Push a new job onto the queue after a delay.
     *
     * @param \DateTime|int $delay
     * @param string        $job
     * @param mixed         $data
     * @param string|null   $queue
     *
     * @return int
     */
    public function later($delay, $job, $data = '', $queue = null)
    {
        $id = parent::later($delay, $job, $data, $queue);
        $this->startProcess($id);

        return $id;
    }
    
    protected function pushToDatabase($delay, $queue, $payload, $attempts = 0)
	{
		$availableAt = $delay instanceof DateTime ? $delay : Carbon::now()->addSeconds($delay);

		return $this->database->table($this->table)->insertGetId([
			'queue' => $this->getQueue($queue),
			'payload' => $payload,
			'attempts' => $attempts,
			'reserved' => 1,
			'reserved_at' => $this->getTime(),
			'available_at' => $availableAt->getTimestamp(),
			'created_at' => $this->getTime(),
		]);
	}
    
    /**
	 * Get the next available job for the queue.
	 *
	 * @param  string|null  $queue
	 * @return \StdClass|null
	 */
	public function getJobFromId($id)
	{
		$job = $this->database->table($this->table)
					->where('id', $id)
					->first();
                    
        if($job) {
            
			return new DatabaseJob(
				$this->container, $this, $job, $job->queue
			);
        }
	}
    
    /**
     * Make a Process for the Artisan command for the job id.
     *
     * @param int $jobId
     * @param int $delay
     *
     * @return void
     */
    public function startProcess($id)
    {
        $command = $this->getCommand($id);
        $cwd = base_path();

        $process = new Process($command, $cwd);
        $process->run();
    }

    /**
     * Get the Artisan command as a string for the job id.
     *
     * @param int $jobId
     * @param int $delay
     *
     * @return string
     */
    protected function getCommand($id)
    {
        $connection = $this->connectionName;
        $cmd = '%s artisan queue:async %d %s';
        $cmd = $this->getBackgroundCommand($cmd);

        $binary = $this->getPhpBinary();

        return sprintf($cmd, $binary, $id, $connection);
    }

    /**
     * Get the escaped PHP Binary from the configuration
     *
     * @return string
     */
    protected function getPhpBinary()
    {
        $path = $this->binary;
        if (!defined('PHP_WINDOWS_VERSION_BUILD')) {
            $path = escapeshellarg($path);
        }

        $args = $this->binaryArgs;
        if(is_array($args)){
            $args = implode(' ', $args);
        }
        return trim($path.' '.$args);
    }

    protected function getBackgroundCommand($cmd)
    {
        if (defined('PHP_WINDOWS_VERSION_BUILD')) {
            return 'start /B '.$cmd.' > NUL';
        } else {
            return $cmd.' > /dev/null 2>&1 &';
        }
    }

    

}