Manually launch a Sidekiq job through Redis

Question

Is there a way to manually launch a Sidekiq process without using Ruby, but by posting the appropriate message into Redis? There must be some sort of convention for the message that it expects.

Answer 1

This is already covered in the FAQ: https://github.com/mperham/sidekiq/wiki/FAQ#how-do-i-push-a-job-to-sidekiq-without-ruby

Answer 2

Not sure why you would do this, but from its documentation: "Sidekiq is compatible with Resque. It uses the exact same message format as Resque so it can integrate into an existing Resque processing farm." I know that Resque enqueues a hash of data as a string:

"{\"class\":\"NoOpWorker\",\"args\":[]}"

You can manually verify this by enqueuing a job at a console with:

Resque.enqueue_to "foo", NoOpWorker

And then see what the data is with a redis-cli command

redis-cli lrange resque:queue:foo 0 100

But before proceeding, why would you want to do this? Why not just run a script or a rake task that would use enqueue the job through Sidekiq's normal API instead of hacking around it?

EDIT: Are you trying to interop between technologies?

Answer 3

Redis doesn't know anything about Ruby or Sidekiq.

So yeah, it's possible. It might require some work, and you might have to take versioning of the non-public (well, it is open source after all, so anything is public) API into account.

You could write a separate client process in any programming language, and analyze the redis keyspace. Read up on the implementation of the Sidekiq serialization. A quick look (I don't use Sidekiq) reveals that it uses simple JSON serialization: sidekiq/api.rb .

Hope this helps, TW