详解PHP swoole process的使用方法
引入背景:假如我们每天有10000个订单生成,需要同步到仓储系统中去,以前做法是开启一个crontab去跑这些任务,但是发现总有感觉同步效率低,间隔时间都是分钟级别的。
解决方案测试:我们将同步订单的任务表添加一个hash作为key,作为分发条件,因为mysql中select如果做mod函数是用不到索引的,所以我们自己做随机hash,但是务必不需要范围太大,以免服务器资源不够,方法是根据hashkey投放到不同的进程中进行同步,测试代码如下
<?php /** * Created by PhpStorm. * User: xujun * Date: 2017/8/26 * Time: 9:37 */ //假定需要处理的数据如下 class Process{ public $mpid=0; public $max_precess=5; //代替从数据库中读取的内容 public $task = [ ['uid'=>1,'uname'=>'bot','hash'=>1,'handle'=>'test'], ['uid'=>2,'uname'=>'bot1','hash'=>2,'handle'=>'test'], ['uid'=>3,'uname'=>'bot2','hash'=>3,'handle'=>'test'], ['uid'=>4,'uname'=>'bot3','hash'=>4,'handle'=>'test'], ['uid'=>2,'uname'=>'bot4','hash'=>2,'handle'=>'test'], ['uid'=>3,'uname'=>'bot5','hash'=>3,'handle'=>'test'], ['uid'=>4,'uname'=>'bot6','hash'=>1,'handle'=>'test'], ]; public $works = []; public $swoole_table = NULL; //public $new_index=0; function test($index,$task){ print_r("[".date('Y-m-d H:i:s')."]".'work-index:'.$index.'处理'.$task['uname'].'完成'.PHP_EOL); } public function __construct(){ try { $this->swoole_table = new swoole_table(1024); $this->swoole_table->column('index', swoole_table::TYPE_INT);//用于父子进程间数据交换 $this->swoole_table->create(); swoole_set_process_name(sprintf('php-ps:%s', 'master')); $this->mpid = posix_getpid(); $this->run(); $this->processWait(); }catch (\Exception $e){ die('ALL ERROR: '.$e->getMessage()); } } public function run(){ for ($i=0; $i < $this->max_precess; $i++) { $this->CreateProcess(); } } private function getTask($index){ $_return = []; foreach ($this->task as $v){ if($v['hash']==$index){ $_return[] = $v; } } return $_return; } public function CreateProcess($index=null){ if(is_null($index)){//如果没有指定了索引,新建的子进程,开启计数 $index=$this->swoole_table->get('index'); if($index === false){ $index = 0; }else{ $index = $index['index']+1; } print_r($index); } $this->swoole_table->set('index',array('index'=>$index)); $process = new swoole_process(function(swoole_process $worker)use($index){ swoole_set_process_name(sprintf('php-ps:%s',$index)); $task = $this->getTask($index); foreach ($task as $v){ call_user_func_array(array($this,$v['handle']),array($index,$v)); } sleep(20); }, false, false); $pid=$process->start(); $this->works[$index]=$pid; return $pid; } public function rebootProcess($ret){ $pid=$ret['pid']; $index=array_search($pid, $this->works); if($index!==false){ $index=intval($index); $new_pid=$this->CreateProcess($index); echo "rebootProcess: {$index}={$new_pid} Done\n"; return; } throw new \Exception('rebootProcess Error: no pid'); } public function processWait(){ while(1) { if(count($this->works)){ $ret = swoole_process::wait(); if ($ret) { $this->rebootProcess($ret); } }else{ break; } } } } $process = new Process();
这里代码中,使用了swoole_table作为进程间共享的内存,为了分配index。以及当进程退出后,父进程通过wait重新拉起该进程任务。
测试截图
进程ps
结果 休眠20s后退出后会被自动拉起
相关推荐
wangshuangbao 2020-07-05
jkzyx 2020-06-29
TNTMysql工程师 2020-06-16
weiguoxin 2020-06-11
natloc 2020-06-10
SelinaChan 2020-05-18
JF0 2020-01-24
ladysosoli 2020-01-19
码墨 2020-01-18
Happyunlimited 2020-01-12
yedaoxiaodi 2020-01-08
mbcsdn 2020-01-07
lixiaotao 2020-01-03
hanyujianke 2020-01-01
chouliqingke 2019-12-17
Happyunlimited 2019-12-08
翡翠谷 2019-11-11
AwesomeQA 2019-08-07
MYSQL轻松学 2019-08-06