ping_response.gemspec

Gem::Specification.new do |spec|
  spec.name = 'ping_response'
  spec.version = '0.1.0'
  spec.platform = Gem::Platform::RUBY
  spec.author = 'Tobias H. Michaelsen'
  spec.email = '[email protected]'
  spec.summary = 'Simple wrapper for Rack apps to add /ping response handler'
  spec.description = 'Will wrap a regular Rack app and add a handler for /ping which responds with `pong` in text/plain'
  spec.license = 'MIT'
  spec.files = ['ping_response.rb']
  spec.require_path = '.'
  spec.add_dependency('rack')
end

ping_response.rb

require 'rack'
module PingResponse
  def self.wrap(app)
    Rack::Builder.new(app) do
      map('/ping') { run Proc.new { |env| [200, {'Content-Type' => 'text/plain'}, ['pong']] } }
    end
  end
end