lxc-exporter/config.ru

require 'rack'
require_relative 'lxc-exporter'
require 'prometheus/client/formats/text'

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
}