Lumen-framework: Can not schedule queue jobs

[Korri]

• Lumen Version: 5.6.1
• PHP Version: 7.1, 7.2

Description:

Queuing jobs in Lumen throws error Call to a member function onQueue() on integer but the job is still queued.

If the job does not implement ShouldQueue, it's worse as the Scheduler is trying to call dispatch_now() which does not exists on Lumen:
Call to undefined function Illuminate\Console\Scheduling\dispatch_now()

Steps To Reproduce:

1. Queue a job that implements Illuminate\Contracts\Queue\ShouldQueue for example:

$schedule->job(new ExampleJob())->everyMinute();

1. Run it using php artisan schedule:run

Example repository: https://github.com/Korri/lumen-schedule-job/commit/ab64a7b0d5036d8caaf4c99d2beab7e7ffdd78f3

[emil-nasso]

I experienced this problem too. It can be worked around by dispatching jobs like this:

        $schedule->call(function () {
            $job = (new HelloWorldJob())->onQueue('cron');
            dispatch($job);
        }
        )->description("hello world")->everyMinute();

The problem seems to be that there is a difference between the dispatch helper in laravel and lumen. The laravel variant returns an object but the lumen on doesn't.

This is the line causing it: https://github.com/illuminate/console/blob/master/Scheduling/Schedule.php#L99

If you call onQueue on the job instead of on the result of dispatch it seem to work in lumen.

[richardbporter]

I'm having this issue as well. Any plans on fixing this for Lumen?

[simonhamp]

This is also an issue in Lumen 5.5 (LTS)

[simonhamp]

You can of course make all jobs synchronous by setting QUEUE_DRIVER=sync in your .env file.

But if you want some jobs to be synchronous (i.e. removing the implements ShouldQueue statement) without causing problems, you'll need to add the dispatch_now method from Laravel to your global namespace somehow.

I personally prefer to create a helpers.php, put this chunk in there and autoload it via my composer.json.

This should really be in Lumen's helpers.php as it's a dependency in Illuminate\Console\Scheduling\Schedule.

To stop the error appearing on the queued jobs is a bit more complicated. In Laravel, dispatch proxies jobs through a PendingDispatch class which is what's returned from the dispatch helper (in Laravel). But it's not available in Lumen, partly because Illuminate\Foundation isn't available as a subtree split.

I'm not clear why this class is in Illuminate\Foundation and not in Illuminate\Bus (where it would make more sense IMHO). If it was in Illuminate\Bus then dispatch in Lumen could match its Laravel counterpart and the world would be right again.

[driesvints]

This is indeed a bug which should be fixed. Welcoming PR's for this. Short term solution is probably to add a dispatch_now helper to the Lumen helpers.php file.

[simonhamp]

@driesvints not sure if a single PR can cover this... it really feels like Illuminate\Foundation needs to be available to Lumen or PendingDispatch moves to Illuminate\Bus, but I guess the implications of both of those solutions are further reaching than I'm aware of.

[jensdenies]

I made a PR to make the scheduler compatible with Lumen.

[driesvints]

Thanks @JacksonIV!