如何取消 Laravel 或 Redis 中的排队作业

Question

How can I browse all the pending jobs within my Redis queue so that I could cancel the Mailable that has a certain emailAddress-sendTime pair?

I'm using Laravel 5.5 and have a Mailable that I'm using successfully as follows:

$sendTime = Carbon::now()->addHours(3);
Mail::to($emailAddress)
      ->bcc([config('mail.supportTeam.address'), config('mail.main.address')])
                    ->later($sendTime, new MyCustomMailable($subject, $dataForMailView));

When this code runs, a job gets added to my Redis queue.

I've already read the Laravel docs but remain confused.

How can I cancel a Mailable (prevent it from sending)?

I'd love to code a webpage within my Laravel app that makes this easy for me.

Or maybe there are tools that already make this easy (maybe FastoRedis?)? In that case, instructions about how to achieve this goal that way would also be really helpful. Thanks!

Update:

I've tried browsing the Redis queue using FastoRedis, but I can't figure out how to delete a Mailable, such as the red arrow points to here:

UPDATE:

Look at the comprehensive answer I provided below .

Answer 1

Make it easier.

Don't send an email with the later option. You must dispatch a Job with the later option, and this job will be responsible to send the email.

Inside this job, before send the email, check the emailAddress-sendTime pair. If is correct, send the email, if not, return true and the email won't send and the job will finish.

Answer 2

Comprehensive Answer:

I now use my own custom DispatchableWithControl trait instead of the Dispatchable trait.

I call it like this:

$executeAt = Carbon::now()->addDays(7)->addHours(2)->addMinutes(17);
SomeJobThatWillSendAnEmailOrDoWhatever::dispatch($contactId, $executeAt);

---

namespace App\Jobs;

use App\Models\Tag;
use Carbon\Carbon;
use Exception;
use Illuminate\Bus\Queueable;
use Illuminate\Queue\SerializesModels;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Contracts\Queue\ShouldQueue;
use Log;

class SomeJobThatWillSendAnEmailOrDoWhatever implements ShouldQueue {

    use DispatchableWithControl,
        InteractsWithQueue,
        Queueable,
        SerializesModels;

    protected $contactId;
    protected $executeAt;

    /**
     * 
     * @param string $contactId
     * @param Carbon $executeAt
     * @return void
     */
    public function __construct($contactId, $executeAt) {
        $this->contactId = $contactId;
        $this->executeAt = $executeAt;
    }

    /**
     * Execute the job. 
     *
     * @return void
     */
    public function handle() {
        if ($this->checkWhetherShouldExecute($this->contactId, $this->executeAt)) {
            //do stuff here
        }
    }

    /**
     * The job failed to process. 
     *
     * @param  Exception  $exception
     * @return void
     */
    public function failed(Exception $exception) {
        // Send user notification of failure, etc...
        Log::error(static::class . ' failed: ' . $exception);
    }

}

---

namespace App\Jobs;

use App\Models\Automation;
use Carbon\Carbon;
use Illuminate\Foundation\Bus\PendingDispatch;
use Log;

trait DispatchableWithControl {

    use \Illuminate\Foundation\Bus\Dispatchable {//https://stackoverflow.com/questions/40299080/is-there-a-way-to-extend-trait-in-php
        \Illuminate\Foundation\Bus\Dispatchable::dispatch as parentDispatch;
    }

    /**
     * Dispatch the job with the given arguments.
     *
     * @return \Illuminate\Foundation\Bus\PendingDispatch
     */
    public static function dispatch() {
        $args = func_get_args();
        if (count($args) < 2) {
            $args[] = Carbon::now(TT::UTC); //if $executeAt wasn't provided, use 'now' (no delay)
        }
        list($contactId, $executeAt) = $args;
        $newAutomationArray = [
            'contact_id' => $contactId,
            'job_class_name' => static::class,
            'execute_at' => $executeAt->format(TT::MYSQL_DATETIME_FORMAT)
        ];
        Log::debug(json_encode($newAutomationArray));
        Automation::create($newAutomationArray);
        $pendingDispatch = new PendingDispatch(new static(...$args));
        return $pendingDispatch->delay($executeAt);
    }

    /**
     * @param int $contactId
     * @param Carbon $executeAt
     * @return boolean
     */
    public function checkWhetherShouldExecute($contactId, $executeAt) {
        $conditionsToMatch = [
            'contact_id' => $contactId,
            'job_class_name' => static::class,
            'execute_at' => $executeAt->format(TT::MYSQL_DATETIME_FORMAT)
        ];
        Log::debug('checkWhetherShouldExecute ' . json_encode($conditionsToMatch));
        $automation = Automation::where($conditionsToMatch)->first();
        if ($automation) {
            $automation->delete();
            Log::debug('checkWhetherShouldExecute = true, so soft-deleted record.');
            return true;
        } else {
            return false;
        }
    }

}

So, now I can look in my 'automations' table to see pending jobs, and I can delete (or soft-delete) any of those records if I want to prevent the job from executing.

Answer 3

也许不是取消它，你实际上可以从 Redis 中删除它，从我从官方文档中读到的关于 Redis 上的忘记命令和Laravel 官方文档与 redis 交互，你基本上可以从界面调用任何Redis命令，如果你可以调用forget命令并实际传递node_id ，在这种情况下，我认为这是您图像中的数字DEL 1517797158我认为您可以实现“取消”。

Answer 4

Delete job by id.

$job = (new \App\Jobs\SendSms('test'))->delay(5);
$id  = app(Dispatcher::class)->dispatch($job);

$res = \Illuminate\Support\Facades\Redis::connection()->zscan('queues:test_queue:delayed', 0, ['match' => '*' . $id . '*']);
$key = array_keys($res[1])[0];

\Illuminate\Support\Facades\Redis::connection()->zrem('queues:test_queue:delayed', $key);

Answer 5

hope this helps

$connection = null;
$default = 'default';

//For the delayed jobs
var_dump( \Queue::getRedis()->connection($connection)->zrange('queues:'.$default.':delayed' ,0, -1) );

//For the reserved jobs
var_dump( \Queue::getRedis()->connection($connection)->zrange('queues:'.$default.':reserved' ,0, -1) );

$connection is the Redis connection name which is null by default, and The $queue is the name of the queue / tube which is 'default' by default!

source : https://stackoverflow.com/a/42182586/6109499

Answer 6

One approach may be to have your job check to see if you've set a specific address/time to be canceled (deleted from queue). Setup a database table or cache a value forever with the address/time in an array. Then in your job's handle method check if anything has been marked for removal and compare it to the mailable's address/time it is processing:

public function handle()
{
     if (Cache::has('items_to_remove')) {
         $items = Cache::get('items_to_remove');
         $removed = null;
         foreach ($items as $item) {
             if ($this->mail->to === $item['to'] && $this->mail->sendTime === $item['sendTime']) {
                  $removed = $item;
                  $this->delete();
                  break;
             }
         }
         if (!is_null($removed)) {
             $diff = array_diff($items, $removed);
             Cache::set(['items_to_remove' => $diff]);
         }
      }
  }

Answer 7

删除所有排队的作业：

Redis::command('flushdb');

Answer 8

Using redis-cli I ran this command:

KEYS *queue*

on the Redis instance holding queued jobs, then deleted whatever keys showed up in the response

DEL queues:default queues:default:reserved

Answer 9

从队列中删除作业。

$this->delete();