rack-graphite

Rack middleware for automatically logging request information to Graphite.

This gem assumes that you're using lookout-statsd and have already initalized Lookout::Statsd.instance in your environment before handling any requests.

By default this will log metrics such as:

• For a GET / request
  • requests.get.root.
    • count
    • lower
    • mean
    • upper
    • upper_90
• For a GET /home request
  • requests.get.home.
    • count
    • lower
    • mean
    • upper
    • upper_90
• For a `PUT /upload' request
  • requests.put.upload.
    • count
    • lower
    • mean
    • upper
    • upper_90
• For a GET /user/login request
  • requests.get.user.login.
    • count
    • lower
    • mean
    • upper
    • upper_90

Usage

In Sinatra

require 'rack/graphite'

class MyApp < Sinatra::Base
  use Rack::Graphite

  get '/' do
    'Hello!'
  end
end

Filter options have been added as an initialization parameter allowing specific requests not be processed by lookout-statsd. The filter option is assumed to be a list of lambda functions that will be applied to rack requests. An example of initializing rack-graphite with a filter option is provided below:

require 'rack/graphite'

class MyApp < Sinatra::Base
  use Rack::Graphite, { filters: [ lambda{|env| env['PATH_INFO'].include? 'dont_log'} ] }

  get '/' do
    'Hello!'
  end

  get "/dont_log/#{random_number}" do
    'Causes too many metrics.'
  end
end