connection = Apis::Connecton.new(:url => 'http://api.example.com') do
  use Apis::Request::JSON
  use Apis::Request::OAuth2
  use Apis::Request::Logger
  adapter Apis::Adapter::NetHTTP
end
	
connection.get('/hello')

Middleware is object that responds to call, accepts env hash and returns array with three elements in order: status, headers, body.

Middleware should accept application it decorates as first parameter to initializer.

Example middleware:

class Middleware
  def initialize(app)
    @app = app
  end
  
  def call(env)
    # do something with request
    response = @app.call(env) # it's decorator, you are responsible to forward message to decorated app
    # do something with response
    response
  end
end

• :method - uppercased request method, should be one of: :GET, :POST, :PUT, :DELETE
• :uri - parsed URi, instance of Addressable::URI
• :params - params to be sent, instance of Hash
• :body - body to be sent. If set than :params are not used
• :headers - headers to be sent, instance of Hash