Proximity

Proximity is a Rack::Proxy router that uses Journey for routing. Journey is vendored into ActionPack as of Rails4.

1. Create your own subclass of Rack::Proxy.
2. include Proximity into that class.
3. Define rewrite_env and rewrite_response as normal. Proximity overrides Rack::Proxy's call so your env['HTTP_HOST'] and env['PATH_INFO'] will be changed before your call to rewrite_env.
4. If you override call, ensure you call super.
5. Create your proxy routes in a proxies.rb file and require it in your application.

# my_proxy.rb
class MyProxy < Rack::Proxy
  include Proximity
end

# proxies.rb
MyProxy.routes.draw do
  route 'example' => 'example.com/api' do
    proxy 'active'                => 'accounts/active'
    proxy 'accounts'              => same, formats %w[json csv]
    proxy 'accounts/:account_id'  => same
    proxy 'crazy/:id/:account_id' => 'fluffy/kitties/:id-:account_id'
  end
end

Add this line to your application's Gemfile:

gem 'proximity'

And then execute:

$ bundle

Or install it yourself as:

$ gem install proximity

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

1. Much goes to TMA for many awesome projects
2. wzcolon for pairing with when gemifying this
3. nathanl for encouraging me to gemify this