Rack::Raml

A mountable mock server for your RAML specifications based on Rack.

Note: This is not intended for use in production environments.

Add this line to your application's Gemfile:

gem 'rack-raml'

Rack::Raml implements a Rack compatible application that responds to #call. Therefore, it can be used with any Rack-based web framework.

To use with Rails, simply point specific URLs at an instance of Rack::Raml::App like so:

MyApplication.routes.draw do
  # ...

  Rack::Raml.routes Rails.root.join('path/to/spec.raml') do |raml_app|
    get '/api/v1/users/:id', to: raml_app
  end
end

To use with Sinatra, you have a few options. The easiest way is to define your route, and invoke #process.

raml_file = File.expand_path('../path/to/spec.raml', __FILE__)
raml_app = Rack::Raml.create(raml_file)

get '/api/v1/users/:id' do
  raml_app.process(request)
end

Otherwise, you might configure Rack::Raml in your config.ru.

#%RAML 0.8
---
title: Dummy API
baseUri: https://dummy-api.com/api/{version}
version: v1

/users:
  /{id}:
    displayName: Find a user
    get:
      responses:
        200:
          description: User was found.
          body:
            application/json:
              example: |-
                {
                  "id": 1,
                  "first_name": "John",
                  "last_name": "Doe"
                }

In RAML, you'll often specify multiple status codes that your server might respond with. By default, Rack::Raml will respond with the lowest status code that you've specified. So, for example, if you've declared a 200 and a 401 response, it will respond with the 200 response code unless otherwise instructed.

You can force Rack::Raml to use a specific status code by requesting the url with the _code query parameter. For example:

$ curl http://localhost:3000/api/v1/users?_code=401

The server will respond with the content type that matches the request. If the request does not specify a content type, Rack::Raml will assume you want application/json.

You can force Rack::Raml to use a specific content type by requesting the url with the _type query parameter. For example:

$ curl http://localhost:3000/api/v1/users?_type=text/plain

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/rack-raml.

The gem is available as open source under the terms of the MIT License.