php获取后台Job管理的实现代码

复制代码 代码如下: 
php defined('syspath') or die('no direct access allowed.'); 
class controller_jobs extends controller_base{ 
public function before(){ 
parent::before(); 
if(request::$protocol != "cli"){ 
die("only cli allowed!\n"); 
} 
} 
public function after(){ 
parent::after(); 
//do some cleaning tasks 
} 
private function _execjobcommand($joburi,$paras){ 
$php_exec = kohana::config("picsou.php_exec"); 
$php_index = appindex; 
$command_args = array(); 
$command_args[] = $php_index; 
$command_args[] = "--uri=".$joburi; 
foreach ($paras as $para => $value){ 
$command_args[] = "--".$para."=".$value; 
} 
//var_dump($command_args);exit; 
echo "exec commmand:".$php_exec."\n"; 
pcntl_exec($php_exec,$command_args); 
} 
/* 
* running jobs in queues 
*/ 
public function action_run(){ 
$requestcount = 0; 
while(true){ 
$sql = "select * from job_queue where status='1' and approved='1' order by id"; 
$jobs = db::query(database::select,$sql)->execute()->as_array(); 
if($jobs){ 
foreach ($jobs as $job){ 
$requestcount ++; 
//update the jobs status as running 
db::update('job_queue')->set(array('status'=>'2')) 
->where('id','=',$job['id'])->execute(); 
$job_pid = pcntl_fork(); 
if($job_pid == -1){ 
die("could not fork child"); 
} else if($job_pid == 0 ){ 
$this->_execjobcommand($job['job_uri'],json_decode($job['paras'],true)); 
echo "finish child\n"; 
exit(0); 
//run jobs here 
} else{ 
echo "waiting for job\n"; 
ob_flush(); 
$child_pid = pcntl_waitpid($job_pid,$status, wuntraced); 
echo "waitpid end:".$status."\n"; 
if($status == 0){ 
//job completed 
db::update('job_queue')->set(array('status'=>'999')) 
->where('id','=',$job['id'])->execute(); 
echo "child finished\n"; 
ob_flush(); 
}else{ 
db::update('job_queue')->set(array('status'=>'-1')) 
->where('id','=',$job['id'])->execute(); 
echo "child failed\n"; 
ob_flush(); 
} 
} 
} 
} 
else{ 
if($requestcount >=10){ 
echo "have a rest, i have processed 10 jobs\n"; 
exit; 
} 
//no job to run 
//echo "no job\n"; 
ob_flush(); 
sleep(5); 
} 
} 
} 
}