Class: VCR::Middleware::Rack

Inherits:

Object

• Object
• VCR::Middleware::Rack

Includes:

VariableArgsBlockCaller

Defined in:

lib/vcr/middleware/rack.rb

Overview

Note:

This will record/replay outbound HTTP requests made by your rack app.

Rack middleware that uses a VCR cassette for each incoming HTTP request.

Examples:

app = Rack::Builder.new do
  use VCR::Middleware::Rack do |cassette, env|
    cassette.name "rack/#{env['SERVER_NAME']}"
    cassette.options :record => :new_episodes
  end

  run MyRackApp
end

Instance Method Summary

• #call(env) ⇒ Array(Integer, Hash, #each)

  Implements the rack middleware interface.

• #initialize(app) {|cassette, env| ... } ⇒ Rack constructor

  Constructs a new instance of VCR’s rack middleware.

Methods included from VariableArgsBlockCaller

#call_block

Constructor Details

#initialize(app) {|cassette, env| ... } ⇒ Rack

Constructs a new instance of VCR’s rack middleware.

Parameters:

• app (#call) —

  the rack app

Yields:

• the cassette configuration block

Yield Parameters:

• cassette (CassetteArguments) —

  the cassette configuration object

• env ((optional) Hash) —

  the rack env hash

Raises:

• (ArgumentError) —

  if no configuration block is provided

# File 'lib/vcr/middleware/rack.rb', line 53

def initialize(app, &block)
  raise ArgumentError.new("You must provide a block to set the cassette options") unless block
  @app, @cassette_arguments_block, @mutex = app, block, Mutex.new
end

Instance Method Details

#call(env) ⇒ Array(Integer, Hash, #each)

Implements the rack middleware interface.

Parameters:

• env (Hash) —

  the rack env hash

Returns:

• (Array(Integer, Hash, #each)) —

  the rack response

# File 'lib/vcr/middleware/rack.rb', line 62

def call(env)
  @mutex.synchronize do
    VCR.use_cassette(*cassette_arguments(env)) do
      @app.call(env)
    end
  end
end