lxc-exporter/config.ru

require 'rack'
require 'json'
require 'prometheus/client/formats/text'
require_relative 'lib/lxc_collector'

run lambda {|env|
  req = Rack::Request.new env
  case req.path

  when '/metrics'
    collector = LxcCollector.new
    [200, {"Content-Type" => "text/plain"}, [Prometheus::Client::Formats::Text.marshal( collector.collect)]]

  else
    [404, {"Content-Type" => "text/plain"}, ["Not found\nYou want to try /metrics?\n"]]
  end
}