Ruby Varnish Purge Script

purge.rb

#!/usr/bin/env ruby
# Ruby varnish purger

require 'net/http'

module Net
  class HTTP::Purge < HTTPRequest
        METHOD='PURGE'
        REQUEST_HAS_BODY = false
        RESPONSE_HAS_BODY = true
  end
end

reqarg = ARGV[0]
if !(reqarg =~ /^http:\/\//)
  reqarg = "http://#{reqarg}"
end

uri = URI(reqarg)

if uri.scheme != "http"
  puts "Not a HTTP URL! Try with http://....?"
  Process.exit(1)
end

puts "Purging: #{uri.to_s}"
Net::HTTP.start(uri.host,uri.port) do |http|
  presp = http.request Net::HTTP::Purge.new uri.request_uri
  puts "#{presp.code}: #{presp.message}"
  unless (200...400).include?(presp.code.to_i)
        STDERR.puts "A problem occurred. PURGE was not performed."
        Process.exit(1)
  end
end