Class: Faraday::Adapter::Rack

Inherits:
Faraday::Adapter show all
Defined in:
lib/faraday/adapter/rack.rb

Overview

Sends requests to a Rack app.

Examples:


class MyRackApp
  def call(env)
    [200, {'Content-Type' => 'text/html'}, ["hello world"]]
  end
end

Faraday.new do |conn|
  conn.adapter :rack, MyRackApp.new
end

Constant Summary collapse

SPECIAL_HEADERS =

not prefixed with "HTTP_"

%w[CONTENT_LENGTH CONTENT_TYPE].freeze

Constants inherited from Faraday::Adapter

CONTENT_LENGTH

Instance Attribute Summary

Attributes included from Parallelism

#supports_parallel

Attributes included from DependencyLoader

#load_error

Instance Method Summary collapse

Methods inherited from Faraday::Adapter

#close, #connection

Methods included from Faraday::AutoloadHelper

#all_loaded_constants, #autoload_all, #load_autoloaded_constants

Methods included from Parallelism

#inherited, #supports_parallel?

Methods included from DependencyLoader

#dependency, #inherited, #loaded?, #new

Methods included from MiddlewareRegistry

#fetch_middleware, #load_middleware, #lookup_middleware, #middleware_mutex, #register_middleware, #unregister_middleware

Constructor Details

#initialize(faraday_app, rack_app) ⇒ Rack

Returns a new instance of Rack.


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# File 'lib/faraday/adapter/rack.rb', line 24

def initialize(faraday_app, rack_app)
  super(faraday_app)
  mock_session = ::Rack::MockSession.new(rack_app)
  @session     = ::Rack::Test::Session.new(mock_session)
end

Instance Method Details

#call(env) ⇒ Object


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# File 'lib/faraday/adapter/rack.rb', line 30

def call(env)
  super
  rack_env = build_rack_env(env)

  env[:request_headers]&.each do |name, value|
    name = name.upcase.tr('-', '_')
    name = "HTTP_#{name}" unless SPECIAL_HEADERS.include? name
    rack_env[name] = value
  end

  timeout = request_timeout(:open, env[:request])
  timeout ||= request_timeout(:read, env[:request])
  response = if timeout
               Timer.timeout(timeout, Faraday::TimeoutError) do
                 execute_request(env, rack_env)
               end
             else
               execute_request(env, rack_env)
             end

  if (req = env[:request]).stream_response?
    warn "Streaming downloads for #{self.class.name} " \
      'are not yet implemented.'
    req.on_data.call(response.body, response.body.bytesize)
  end

  save_response(env, response.status, response.body, response.headers)
  @app.call env
end