Add support for background jobs

[markbates]

It would be great to have an interface to talk to, so people can bring their own background job systems.

By default I would like to ship with one that is compatible with SideKiq.

[bscott]

maybe?

https://github.com/rylio/queue
https://www.goworker.org/
https://github.com/jrallison/go-workers

[amedeiros]

I like the idea of being able to bring your own background job system with a single interface to talk to any of them.

I messed around a little today with this idea https://github.com/amedeiros/buffalo/blob/workers/workers/workers.go. Let me know what you think.

Essentially there is a BaseWorker interface and then another interface for github.com/jrallison/go-workers (GoWorkersWrapper) and another interface for github.com/benmanns/goworker (GoWorkerWrapper) that both require the BaseWorker interface.

Then theres just some functions that take the BaseWorker interface as an argument.

Configure(worker BaseWorker)
Process(worker BaseWorker)
PerformAsync(worker BaseWorker, args ...interface{})

The only thing I really didn't like about it was that the two worker systems take different function signatures so the Perform methods are not defined in the BaseWorker interface. Also a better way to start the worker systems ideally something like RunWorkers() that would know which job system to start maybe a CLI option --worker-engine=?

[markbates]

An example adapter for gocraft/work https://github.com/gobuffalo/gocraft-work-adapter