背景介绍

公司需要实现X分钟内每隔Y秒轮训某个接口，Linux自带的crontab貌似只精确到分钟，虽然可以到精确到秒，但是并不满足需求。

选型

公司项目都是 基于 Laravel 框架，所以这个没得选。守护进程用的 supervisor，看看这个家伙能不能满足我们的需求

代码

namespace App\Console\Commands;

use Illuminate\Console\Command;

use Cache;

use Carbon\Carbon;

class TaskCommand extends Command {

    /**

     * The name and signature of the console command.

     *

     * @var string

     */

    protected $signature = 'ue:task

        {--id=      : 当前编号}

        {--max=     : 最大线程}

        {--sleep=   : 休眠多少毫秒}

        {--debug=   : 是否调试模式}

        ';

    /**

     * The console command description.

     *

     * @var string

     */

    protected $description = 'Command description';

    /**

     * Create a new command instance.

     *

     * @return void

     */

    public function __construct() {

        parent::__construct();

    }

    /**

     * Execute the console command.

     *

     * @return mixed

     */

    public function handle() {

        $this->id       = $this->option('id') ?? '00';

        $this->max      = $this->option('max') ?? 32;

        $this->sleep    = $this->option('sleep') ?? 700;

        $this->debug    = $this->option('debug') ?? false;

        if ($this->id > $this->max) {

            return true;

        }

        while (true) {

            $this->doRun();

        }

    }

    /**

     *

     * @param int $taskId

     * @return boolean

     */

    protected function doRun() {

        $lock = sprintf('task:%03d:%s', $this->id, time());

        $data = [

            'id' => $this->id,

            'max' => $this->max,

            'time'  => (new Carbon)->format('Y-m-d H:i:s.u'),

            'key' => $lock,

        ];

        try {

            $result = cache()->get($lock);

            if ($result) {

                $data['message'] = 'Task Has been executed.';

                $this->wait($this->sleep);

                return true;

            }

            cache()->put($lock, true, 2);

            $data['message'] = 'Task Executed.';

            $this->logger($data);

            $this->wait($this->sleep);

        } catch (\Exception $ex) {

            $data['message'] = $ex->getMessage();

            cache()->put($data, true, 2);

            $this->wait($this->sleep);

        }

    }

    /**

     * 毫秒

     * @param string $time

     */

    protected function wait($time) {

        $wait = $time * 1000;

        usleep($wait);

    }

    protected function logger($message) {

        if($this->debug){

            $time   = (new Carbon)->format('Y-m-d H:i:s.u');

            $this->line(array_get($message, 'message') .' - '. $time);

        }

        logger()->stack(['task'])->debug(null, $message);

    }

}

进程守护

```
[program:task-worker]
process_name=%(program_name)s_%(process_num)02d
command=/usr/bin/php /home/wwwroot/demo/artisan ue:task --id=%(process_num)02d --max=8
autostart=true
autorestart=true
user=www
numprocs=8
redirect_stderr=true
stdout_logfile=/home/wwwroot/demo/storage/logs/worker.log
```

上面是supervisor的配置

效果图

Task Executed. - 2018-08-14 22:17:18.985094

Task Executed. - 2018-08-14 22:17:19.336115

Task Executed. - 2018-08-14 22:17:20.038236

Task Executed. - 2018-08-14 22:17:21.090470

Task Executed. - 2018-08-14 22:17:22.142716

Task Executed. - 2018-08-14 22:17:23.195126

Task Executed. - 2018-08-14 22:17:24.247698

Task Executed. - 2018-08-14 22:17:25.300066

Task Executed. - 2018-08-14 22:17:26.352638

Task Executed. - 2018-08-14 22:17:27.054124

Task Executed. - 2018-08-14 22:17:28.106420

Task Executed. - 2018-08-14 22:17:29.158906

Task Executed. - 2018-08-14 22:17:30.211438

Task Executed. - 2018-08-14 22:17:31.263542

Task Executed. - 2018-08-14 22:17:32.315923

Task Executed. - 2018-08-14 22:17:33.017096

Task Executed. - 2018-08-14 22:17:34.068963

Task Executed. - 2018-08-14 22:17:35.121267

Task Executed. - 2018-08-14 22:17:36.173600

Task Executed. - 2018-08-14 22:17:37.226165

输出日志

[2018-08-14 22:12:24] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:24.389224","key":"task:001:1534255944","message":"Task Executed."}

[2018-08-14 22:12:25] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:25.390158","key":"task:001:1534255945","message":"Task Executed."}

[2018-08-14 22:12:26] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:26.391594","key":"task:001:1534255946","message":"Task Executed."}

[2018-08-14 22:12:27] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:27.393196","key":"task:001:1534255947","message":"Task Executed."}

[2018-08-14 22:12:28] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:28.395124","key":"task:001:1534255948","message":"Task Executed."}

[2018-08-14 22:12:29] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:29.396796","key":"task:001:1534255949","message":"Task Executed."}

[2018-08-14 22:12:30] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:30.398666","key":"task:001:1534255950","message":"Task Executed."}

[2018-08-14 22:12:31] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:31.400561","key":"task:001:1534255951","message":"Task Executed."}

[2018-08-14 22:12:32] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:32.402462","key":"task:001:1534255952","message":"Task Executed."}

[2018-08-14 22:12:33] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:33.404092","key":"task:001:1534255953","message":"Task Executed."}

[2018-08-14 22:12:34] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:34.405550","key":"task:001:1534255954","message":"Task Executed."}

[2018-08-14 22:12:35] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:35.407197","key":"task:001:1534255955","message":"Task Executed."}

[2018-08-14 22:12:36] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:36.408920","key":"task:001:1534255956","message":"Task Executed."}

[2018-08-14 22:12:37] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:37.410841","key":"task:001:1534255957","message":"Task Executed."}

[2018-08-14 22:12:38] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:38.412764","key":"task:001:1534255958","message":"Task Executed."}

[2018-08-14 22:12:39] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:39.414518","key":"task:001:1534255959","message":"Task Executed."}

[2018-08-14 22:12:40] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:40.416229","key":"task:001:1534255960","message":"Task Executed."}

[2018-08-14 22:12:41] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:41.418001","key":"task:001:1534255961","message":"Task Executed."}

[2018-08-14 22:12:42] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:42.419476","key":"task:001:1534255962","message":"Task Executed."}

[2018-08-14 22:12:43] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:43.421388","key":"task:001:1534255963","message":"Task Executed."}

[2018-08-14 22:12:44] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:44.423164","key":"task:001:1534255964","message":"Task Executed."}

[2018-08-14 22:12:45] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:45.424798","key":"task:001:1534255965","message":"Task Executed."}

[2018-08-14 22:12:46] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:46.426667","key":"task:001:1534255966","message":"Task Executed."}

[2018-08-14 22:12:47] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:47.428553","key":"task:001:1534255967","message":"Task Executed."}

[2018-08-14 22:12:48] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:48.430427","key":"task:001:1534255968","message":"Task Executed."}

[2018-08-14 22:12:49] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:49.432118","key":"task:001:1534255969","message":"Task Executed."}

[2018-08-14 22:12:50] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:50.433893","key":"task:001:1534255970","message":"Task Executed."}

[2018-08-14 22:12:51] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:51.435711","key":"task:001:1534255971","message":"Task Executed."}

[2018-08-14 22:12:52] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:52.437015","key":"task:001:1534255972","message":"Task Executed."}

[2018-08-14 22:12:53] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:53.438352","key":"task:001:1534255973","message":"Task Executed."}

[2018-08-14 22:12:54] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:54.439989","key":"task:001:1534255974","message":"Task Executed."}

[2018-08-14 22:12:55] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:55.441580","key":"task:001:1534255975","message":"Task Executed."}

[2018-08-14 22:12:56] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:56.443116","key":"task:001:1534255976","message":"Task Executed."}

[2018-08-14 22:12:57] local.DEBUG:  {"id":"1","max":"32","time":"2018-08-14 22:12:57.445006","key":"task:001:1534255977","message":"Task Executed."}

原文地址：https://segmentfault.com/a/1190000016012148

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