【发布时间】:2018-11-23 04:08:18
【问题描述】:
我有一个非常大的 cron 作业需要执行,但由于内存泄漏,服务器无法处理它,所以我遵循使用 laravel Queue 的建议,因为我不能总是运行php artisan queue:work,所以我写了一个预定的队列命令,每 5 分钟触发一次,但是除非我在服务器上手动触发,否则队列不起作用。
这是我的队列命令:
<?php
namespace App\Console\Commands;
use Illuminate\Console\Command;
class EnsureQueueListenerIsRunning extends Command
{
/**
* The name and signature of the console command.
*
* @var string
*/
protected $signature = 'queue:checkup';
/**
* The console command description.
*
* @var string
*/
protected $description = 'Ensure that the queue listener is running.';
/**
* Create a new command instance.
*
* @return void
*/
public function __construct()
{
parent::__construct();
}
/**
* Execute the console command.
*
* @return mixed
*/
public function handle()
{
//
$this->startQueueListener();
if ( ! $this->isQueueListenerRunning()) {
$this->comment('Queue listener is being started.');
$pid = $this->startQueueListener();
$this->saveQueueListenerPID($pid);
}
$this->comment('Queue listener is running.');
}
/**
* Check if the queue listener is running.
*
* @return bool
*/
private function isQueueListenerRunning()
{
if ( ! $pid = $this->getLastQueueListenerPID()) {
return false;
}
$process = exec("ps -p $pid -opid=,cmd=");
//$processIsQueueListener = str_contains($process, 'queue:listen'); // 5.1
$processIsQueueListener = ! empty($process); // 5.6 - see comments
return $processIsQueueListener;
}
/**
* Get any existing queue listener PID.
*
* @return bool|string
*/
private function getLastQueueListenerPID()
{
if ( ! file_exists(__DIR__ . '/queue.pid')) {
return false;
}
return file_get_contents(__DIR__ . '/queue.pid');
}
/**
* Save the queue listener PID to a file.
*
* @param $pid
*
* @return void
*/
private function saveQueueListenerPID($pid)
{
file_put_contents(__DIR__ . '/queue.pid', $pid);
}
/**
* Start the queue listener.
*
* @return int
*/
private function startQueueListener()
{
//$command = 'php-cli ' . base_path() . '/artisan queue:listen --timeout=60 --sleep=5 --tries=3 > /dev/null & echo $!'; // 5.1
$command = 'php artisan queue:work --timeout=60 --sleep=5 --tries=3 > /dev/null & echo $!'; // 5.6 - see comments
$pid = exec($command);
return $pid;
}
}
这是内核:
$schedule->command('queue:checkup')->everyFiveMinutes();
我应该怎么做才能让它工作?
【问题讨论】: