I'd like to propose a tracing integration for Rails Active Job generically that is not dependent upon any particular backend (e.g. sidekiq, delayed_job, etc.). ActiveJob is instrumented with ActiveSupport Notifications and I believe that it could trace:

• enqueues (count)
• executions (count, duration)
• errors
• retries

I've read this comment about contributing and wanted to feel out interest and advice before committing myself. I'm the author of GoodJob, an ActiveJob backend, and imagined a generic adapter would be more broadly beneficial than one specific to GoodJob. Thank you!