dorongutman/rails-sidekiq-datadog-prometheus-issue

README

This repo shows a reproduction of an issue we have when trying to have the following three gems working together:

• sidekiq
• prometheus_exporter
• ddtrace (datadog's sdk)

First commit is a fresh rails new install Second commit is the minimal changes needed to show this issue. Specifically, it has the additions of the three gems, and two initializer files:

• prometheus.rb for setting the middleware (as instructed by the gem's installation guide)
• sidekiq.rb for setting up prometheus specifically for sidekiq stuff (as instructed by the prometheus gem docs for sidekiq)

To run this repo and see sidekiq fails with stack level too deep:

• bundle install
• make sure you have a redis running locally
• in tab 1 run bundle exec prometheus_exporter -v --bind 0.0.0.0 -p 9394 to run a server that the promethus exporter sends stuff to
• in tab 2 run bundle exec sidekiq

If you comment out the contents of config/initializers/promethus.rb sidekiq manages to run fine.