Question

我正在通过gearman运行分布式作业。我试图转换1000个大小为10 MB的pdf文件。我能够设置它并获得编码的pdf文件。

我有以下代码：

gearman_client.php（仅用于初始化）

<?php

class gearman_client{

    static $timeout = 5000;

    private static function addServerToCLient($client, $server){

        $added = 0;
        $client->setTimeout(self::$timeout);

        $server = explode(':', $server);

        $job_server = $server[0];
        if(array_key_exists(1, $server))
            $job_server_port = $server[1];
        else 
            $job_server_port = 4730; //default port

        try{
            $added = $client->addServer($job_server, $job_server_port); 
        }
        catch(GearmanException $e){
            error_log(sprintf("GearmanException: %s .Error adding Gearman Server: %s, port: %s",$e->getMessage(), $job_server, $job_server_port), false);
        }
        return $added;
    }

    public static function initialize(){

        $client = null;

        $servers = explode(',', GEARMAN_JOB_SERVERS);
        $added = 0;

        //To accomodate Gearman bug
        $flag = 0;
        foreach($servers as $server){
            if(!$flag){
                unset($client);
                $client = new GearmanClient();
            }

            $added = self::addServerToCLient($client, $server); 
            if($added)
                $flag = 1;  
        }

        if($flag)
            return  $client;
        return 0;

    }

}

Gearman客户

$gmclient = gearman_client::initialize();
      if(!$gmclient){
        $this->error("Gearman server error","Could not create a gearman client object with a running Gearman Server");
        return;
      }
      $pdfdata = array(
            "id_host" => $this->id_host,
            "id_vhost" => $this->id_vhost,
            "id_contents" => $id_contents
            );
      $job_handle = $gmclient->doBackground("pdf_convert", json_encode($pdfdata));

      if ($gmclient->returnCode() != GEARMAN_SUCCESS){
        error_log("Gearman client: Bad Return code. Error while submitting background job");
      }

Gearman工作人员

$worker = new GearmanWorker();
$worker->addServer("192.0.1.118");

$worker->addFunction("pdf_convert", function(GearmanJob $job) {

    $workload = json_decode($job->workload());
    $id_host = $workload->id_host;
    $id_vhost = $workload->id_vhost;
    $id_contents = $workload->id_contents;

    contents_path($id_host, $id_vhost, $id_contents);
    pdf($id_host, $id_vhost, $id_contents);

    // You would then, of course, actually call this:
    //mail($workload->email, $workload->subject, $workload->body);
});

while ($worker->work());

一切似乎都运作良好。但是，我看到即使我启动了多个gearman worker实例，也只有一个工作总是很忙（我可以通过telnet接口看到）。

如果我在工人代码中引入sleep(30)，那么我开始看到其他工人从事工作。

这是正常行为吗？

只有一名工人似乎在Gearman工作

0 个答案: