Class: Apia::Yabeda::PrometheusCollector

Inherits:
Object
  • Object
show all
Defined in:
lib/apia/yabeda/prometheus_collector.rb

Instance Method Summary collapse

Instance Method Details

#register_metrics ⇒ Object 



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# File 'lib/apia/yabeda/prometheus_collector.rb', line 21

def register_metrics
  ::Yabeda.configure do
    group :apia do
      counter :requests_total do
        comment "The total number of requests handled by Apia"
        tags([:method, :route, :status, :api, :endpoint, :authenticator, :error_code])
      end
      histogram :endpoint_duration do
        comment "Time spent in Apia requests in seconds"
        unit :seconds
        tags([:status, :endpoint])
        buckets ::Yabeda::Rails::LONG_RUNNING_REQUEST_BUCKETS
      end
    end
  end
end

#start ⇒ Object 



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# File 'lib/apia/yabeda/prometheus_collector.rb', line 11

def start
  register_metrics
  ActiveSupport::Notifications.subscribe(/(request(_error)?)\.apia/) do |*args|
    event = ActiveSupport::Notifications::Event.new(*args)

    increment_request_total_metric(event)
    observe_endpoint_duration_metric(event)
  end
end