To add a collaborator to this project you will need to use the Relish gem to add the collaborator via a terminal command. Soon you'll be able to also add collaborators here!
More about adding a collaboratorRack
VCR provides a rack middleware that uses a cassette for the duration of
a request. Simply provide VCR::Middleware::Rack
with a block that sets
the cassette name and options. You can set these based on the rack env
if your block accepts two arguments.
This is useful in a couple different ways:
- In a rails app, you could use this to log all HTTP API calls made by
the rails app (using the
:all
record mode). Of course, this will only record HTTP API calls made in the request-response cycle--API calls that are offloaded to a background job will not be logged. - This can be used as middleware in a simple rack HTTP proxy, to record and replay the proxied requests.
- Background
-
- Given
-
a file named "remote_server.rb" with:
require 'vcr_cucumber_helpers' request_count = 0 start_sinatra_app(:port => 7777) do get('/:path') { "Hello #{params[:path]} #{request_count += 1}" } end
- And
-
a file named "client.rb" with:
require 'remote_server' require 'proxy_server' require 'cgi' url = URI.parse("http://localhost:8888?url=#{CGI.escape('http://localhost:7777/foo')}") puts "Response 1: #{Net::HTTP.get_response(url).body}" puts "Response 2: #{Net::HTTP.get_response(url).body}"
- And
- the directory "cassettes" does not exist
- Scenarios
-
- Use VCR rack middleware to record HTTP responses for a simple rack proxy app
-
- Given
-
a file named "proxy_server.rb" with:
require 'vcr' start_sinatra_app(:port => 8888) do use VCR::Middleware::Rack do |cassette| cassette.name 'proxied' cassette.options :record => :new_episodes end get('/') { Net::HTTP.get_response(URI.parse(params[:url])).body } end VCR.config do |c| c.cassette_library_dir = 'cassettes' c.stub_with :fakeweb c.allow_http_connections_when_no_cassette = true end
- When
- I run "ruby client.rb"
- Then
-
the output should contain:
Response 1: Hello foo 1 Response 2: Hello foo 1
- And
- the file "cassettes/proxied.yml" should contain "body: Hello foo 1"
- Set cassette name based on rack request env
-
- Given
-
a file named "proxy_server.rb" with:
require 'vcr' start_sinatra_app(:port => 8888) do use VCR::Middleware::Rack do |cassette, env| cassette.name env['SERVER_NAME'] cassette.options :record => :new_episodes end get('/') { Net::HTTP.get_response(URI.parse(params[:url])).body } end VCR.config do |c| c.cassette_library_dir = 'cassettes' c.stub_with :fakeweb c.allow_http_connections_when_no_cassette = true end
- When
- I run "ruby client.rb"
- Then
-
the output should contain:
Response 1: Hello foo 1 Response 2: Hello foo 1
- And
- the file "cassettes/localhost.yml" should contain "body: Hello foo 1"
Last published over 7 years ago by myronmarston.