rails-monitoring
Rails engine that provides a JSON API which serves Sidekiq and Whenever status information from a HTTP-auth protected endpoint. This status information is gathered by scheduling a frequently running job that saves timestamps in Redis.
Installation
Add gem to your project:
gem 'rails-monitoring'
Mount engine in routes.rb:
Rails.application.routes.draw do
  mount Rails::Monitoring::Engine => '/monitoring'
end
Schedule job in whenever's schedule.rb:
every 5.minutes do
  runner 'Rails::Monitoring::Status.refresh'
end
Be sure that your parent app provides HTTP basic authentication credentials using an initializer
# app/config/initializers/monitoring.rb
Rails::Monitoring.http_auth_name = 'user'
Rails::Monitoring.http_auth_password = 'password'
This engine's controller inherits from ApplicationController by default. You
can change this using the parent_controller option
Rails::Monitoring.parent_controller = 'SomeOtherController'
Usage
Navigate to /monitoring/status and receive Sidekiq status information:
{
  "timestamps": {
    "whenever_ran": "2018-01-23 15:05:02",
    "sidekiq_performed": "2018-01-23 15:05:02",
    "requested": "2018-01-23 15:08:28"
  },
  "sidekiq": {
    "active_workers": 0,
    "queue_sizes": {
      "mailers": 0,
      "default": 0,
      "scheduled": 0,
      "retries": 0,
      "dead": 0
    },
    "recent_history": {
      "processed": {
        "2018-01-23": 18,
        "2018-01-22": 0,
        "2018-01-21": 0,
        "2018-01-20": 0,
        "2018-01-19": 0
      },
      "failed": {
        "2018-01-23": 0,
        "2018-01-22": 0,
        "2018-01-21": 0,
        "2018-01-20": 0,
        "2018-01-19": 0
      }
    },
    "totals": {
      "processed": 18,
      "failed": 0
    }
  }
}
Development
Run tests with
bundle exec rake test