check_berkshelf_api_cache_status.rb

#!/usr/bin/env ruby

require 'open-uri'
require 'json'

url = 'https://api.berkshelf.com/status'

begin
  statusjson = JSON.parse(open(url).readlines[0])
rescue OpenURI::HTTPError => error
  httpresp = error.io

  if httpresp.status.first != 200
    puts "CRITICAL: Berkshelf API web server or network is NOT ok! HTTP response #{httpresp.status} received when retrieving '#{url}'"
    exit 2
  end
rescue SocketError, Errno::ECONNREFUSED => error
  puts "CRITICAL: Berkshelf API returned #{error.message} for #{url}"
  exit 2
end

case statusjson['cache_status']
when 'ok'
  puts 'OK: Berkshelf API cache_status is ok'
  exit 0
when 'warming'
  puts "CRITICAL: Berkshelf API cache_status is warming! Client requests will fail."
  exit 2
else
  puts "UNKNOWN: Berkshelf API cache_status is unknown: '#{statusjson['cache_status']}'?"
  exit 3
end