Laravel 5.1排队作业$this->；delete(）不起作用

我使用的是Laravel 5.1，它内置在队列服务中（带有Redis驱动程序）。

队列侦听器如下所示：

php artisan queue:listen --tries=5 --delay=60 redis

在作业类本身中，我会检查响应，如果是肯定响应，我会使用$this->delete()将作业从队列中删除，但没有成功，无论是否失败，作业仍会激发5次。

这是我使用的作业文件：

<?php
namespace LM2'Jobs;
use LM2'Http'Controllers'API;
use LM2'Http'Controllers'PredictionsController;
use LM2'Jobs'Job;
use Illuminate'Support'Facades'Log;
use LM2'Http'Controllers'AnalyticsController;
use Illuminate'Queue'SerializesModels;
use Illuminate'Queue'InteractsWithQueue;
use Illuminate'Contracts'Bus'SelfHandling;
use Illuminate'Contracts'Queue'ShouldQueue;
use LM2'Models'Client;
use LM2'Models'GoogleIntegration;
use LM2'Models'Lead;
class CompleteLeadAnalyticsDetails extends Job implements SelfHandling, ShouldQueue
{
    use InteractsWithQueue, SerializesModels;
    const NUMBER_OF_TRIES = 5;
    private $lead;
    private $client;
    public function __construct(Lead $lead, Client $client)
    {
        $this->lead   = $lead;
        $this->client = $client;
    }
    public function handle(AnalyticsController $analyticsController, API $api,PredictionsController $prediction)
    {
        Log::info("Inside CompleteLeadAnalyticsDetails::handle()");
        $integration = GoogleIntegration::where('client_id', $this->client->id)->first();
        if(count($integration) > 0){
            if($this->attempts() > 1){
                Log::info("CompleteLeadAnalyticsDetails::handle() attempt ".$this->attempts());
                $this->release(120);
                Log::info("CompleteLeadAnalyticsDetails::handle() released");
            }
            try{
                if(count($this->lead->ga_details) > 1){
                    return;
                }
                $res = $analyticsController->getLeadDetails($integration->view_id,$this->lead->ga_details['uacid'],$this->lead->_id,$this->client);
                Log::info("Analytics response: ".$res);
                Log::info('has $res');
                if($res){
                    if(isset($this->lead->email_sent) && (bool)$this->lead->email_sent){
                        return;
                    }else {
                        $prediction->predict($this->lead, $this->client);
                        $api->sendLeadEmail($res, $this->client);
                        $api->forwardToWebService($this->client, $this->lead);
                        Log::info('email sent');
                        $this->delete();
                        return true;
                    }
                }
            }catch ('Exception $e){
                Log::info('no $res, number of attempts:'.$this->attempts()." for lead id:".$this->lead->_id.' number of Attempts: '.$this->attempts());
                if($this->attempts() == self::NUMBER_OF_TRIES){
                    $api->forwardToWebService($this->client,$this->lead);
                    $api->sendLeadEmail($this->lead, $this->client);
                    Log::info('email sent, no $res');
                    $this->delete();
                }
                throw new 'Exception('No response for lead id '.$this->lead->_id.' is breaking the job??');
                return false;
            }
        }else{
            if(isset($this->lead->email_sent) && (bool)$this->lead->email_sent){
                return;
            }
            $api->forwardToWebService($this->client,$this->lead);
            $api->sendLeadEmail($this->lead, $this->client);
            Log::info("Client ".$this->client->name.', id:'.$this->client->id.' was not integrate with google CompleteLeadAnalyticsDetails on line:62');
            $this->delete();
        }
        return true;
    }
}

有人知道为什么会发生这种情况，解决方案是什么吗？

感谢您的帮助！：）