Work.php
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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2015 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: yunwuxin <448901948@qq.com>
// +----------------------------------------------------------------------
namespace think\queue\command;
use think\Config;
use think\console\Command;
use think\console\Input;
use think\console\input\Option;
use think\console\Output;
use think\Hook;
use think\queue\Job;
use think\queue\Worker;
use Exception;
use Throwable;
use think\Cache;
use think\exception\Handle;
use think\exception\ThrowableError;
class Work extends Command
{
/**
* The queue worker instance.
* @var \think\queue\Worker
*/
protected $worker;
protected function initialize(Input $input, Output $output)
{
$this->worker = new Worker();
}
protected function configure()
{
$this->setName('queue:work')
->addOption('queue', null, Option::VALUE_OPTIONAL, 'The queue to listen on')
->addOption('daemon', null, Option::VALUE_NONE, 'Run the worker in daemon mode')
->addOption('delay', null, Option::VALUE_OPTIONAL, 'Amount of time to delay failed jobs', 0)
->addOption('force', null, Option::VALUE_NONE, 'Force the worker to run even in maintenance mode')
->addOption('memory', null, Option::VALUE_OPTIONAL, 'The memory limit in megabytes', 128)
->addOption('sleep', null, Option::VALUE_OPTIONAL, 'Number of seconds to sleep when no job is available', 3)
->addOption('tries', null, Option::VALUE_OPTIONAL, 'Number of times to attempt a job before logging it failed', 0)
->setDescription('Process the next job on a queue');
}
/**
* Execute the console command.
* @param Input $input
* @param Output $output
* @return int|null|void
*/
public function execute(Input $input, Output $output)
{
$queue = $input->getOption('queue');
$delay = $input->getOption('delay');
$memory = $input->getOption('memory');
if ($input->getOption('daemon')) {
Hook::listen('worker_daemon_start', $queue);
$this->daemon(
$queue, $delay, $memory,
$input->getOption('sleep'), $input->getOption('tries')
);
} else {
$response = $this->worker->pop($queue, $delay, $input->getOption('sleep'), $input->getOption('tries'));
$this->output($response);
}
}
protected function output($response)
{
if (!is_null($response['job'])) {
/** @var Job $job */
$job = $response['job'];
if ($response['failed']) {
$this->output->writeln('<error>Failed:</error> ' . $job->getName());
} else {
$this->output->writeln('<info>Processed:</info> ' . $job->getName());
}
}
}
/**
* 启动一个守护进程执行任务.
*
* @param string $queue
* @param int $delay
* @param int $memory
* @param int $sleep
* @param int $maxTries
* @return array
*/
protected function daemon($queue = null, $delay = 0, $memory = 128, $sleep = 3, $maxTries = 0)
{
$lastRestart = $this->getTimestampOfLastQueueRestart();
while (true) {
$this->runNextJobForDaemon(
$queue, $delay, $sleep, $maxTries
);
if ( $this->memoryExceeded($memory) ) {
Hook::listen('worker_memory_exceeded', $queue);
$this->stop();
}
if ( $this->queueShouldRestart($lastRestart) ) {
Hook::listen('worker_queue_restart', $queue);
$this->stop();
}
}
}
/**
* 以守护进程的方式执行下个任务.
*
* @param string $queue
* @param int $delay
* @param int $sleep
* @param int $maxTries
* @return void
*/
protected function runNextJobForDaemon($queue, $delay, $sleep, $maxTries)
{
try {
$response = $this->worker->pop($queue, $delay, $sleep, $maxTries);
$this->output($response);
} catch (Exception $e) {
$this->getExceptionHandler()->report($e);
} catch (Throwable $e) {
$this->getExceptionHandler()->report(new ThrowableError($e));
}
}
/**
* 获取上次重启守护进程的时间
*
* @return int|null
*/
protected function getTimestampOfLastQueueRestart()
{
return Cache::get('think:queue:restart');
}
/**
* 检查是否要重启守护进程
*
* @param int|null $lastRestart
* @return bool
*/
protected function queueShouldRestart($lastRestart)
{
return $this->getTimestampOfLastQueueRestart() != $lastRestart;
}
/**
* 检查内存是否超出
* @param int $memoryLimit
* @return bool
*/
protected function memoryExceeded($memoryLimit)
{
return (memory_get_usage() / 1024 / 1024) >= $memoryLimit;
}
/**
* 获取异常处理实例
*
* @return \think\exception\Handle
*/
protected function getExceptionHandler()
{
static $handle;
if (!$handle) {
if ($class = Config::get('exception_handle')) {
if (class_exists($class) && is_subclass_of($class, "\\think\\exception\\Handle")) {
$handle = new $class;
}
}
if (!$handle) {
$handle = new Handle();
}
}
return $handle;
}
/**
* 停止执行任务的守护进程.
* @return void
*/
public function stop()
{
die;
}
}