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require 'vcr/util/version_checker'
require 'vcr/request_handler'
require 'excon'
VCR::VersionChecker.new('Excon', Excon::VERSION, '0.9.6', '0.16').check_version!
module VCR
class LibraryHooks
# @private
module Excon
class RequestHandler < ::VCR::RequestHandler
attr_reader :params
def initialize(params)
@vcr_response = nil
@params = params
end
def handle
super
ensure
invoke_after_request_hook(@vcr_response)
end
private
def on_stubbed_by_vcr_request
@vcr_response = stubbed_response
{
:body => stubbed_response.body,
:headers => normalized_headers(stubbed_response.headers || {}),
:status => stubbed_response.status.code
}
end
def on_ignored_request
perform_real_request
end
def response_from_excon_error(error)
if error.respond_to?(:response)
error.response
elsif error.respond_to?(:socket_error)
response_from_excon_error(error.socket_error)
else
warn "WARNING: VCR could not extract a response from Excon error (#{error.inspect})"
end
end
PARAMS_TO_DELETE = [:expects, :idempotent,
:instrumentor_name, :instrumentor,
:response_block, :request_block]
def real_request_params
# Excon supports a variety of options that affect how it handles failure
# and retry; we don't want to use any options here--we just want to get
# a raw response, and then the main request (with :mock => true) can
# handle failure/retry on its own with its set options.
scrub_params_from params.merge(:mock => false, :retry_limit => 0)
end
def new_connection
# Ensure the connection is constructed with the exact same args
# that the orginal connection was constructed with.
args, options = params.fetch(:__construction_args)
options = scrub_params_from(options) if options.is_a?(Hash)
::Excon::Connection.new(*[args, options].compact)
end
def scrub_params_from(hash)
hash = hash.dup
PARAMS_TO_DELETE.each { |key| hash.delete(key) }
hash
end
def perform_real_request
begin
response = new_connection.request(real_request_params)
rescue ::Excon::Errors::Error => excon_error
response = response_from_excon_error(excon_error)
end
@vcr_response = vcr_response_from(response)
yield response if block_given?
raise excon_error if excon_error
response.attributes
end
def on_recordable_request
perform_real_request do |response|
http_interaction = http_interaction_for(response)
VCR.record_http_interaction(http_interaction)
end
end
def uri
@uri ||= "#{params[:scheme]}://#{params[:host]}:#{params[:port]}#{params[:path]}#{query}"
end
# based on:
# https://github.com/geemus/excon/blob/v0.7.8/lib/excon/connection.rb#L117-132
def query
@query ||= case params[:query]
when String
"?#{params[:query]}"
when Hash
qry = '?'
for key, values in params[:query]
if values.nil?
qry << key.to_s << '&'
else
for value in [*values]
qry << key.to_s << '=' << CGI.escape(value.to_s) << '&'
end
end
end
qry.chop! # remove trailing '&'
else
''
end
end
def http_interaction_for(response)
VCR::HTTPInteraction.new \
vcr_request,
vcr_response_from(response)
end
def vcr_request
@vcr_request ||= begin
headers = params[:headers].dup
headers.delete("Host")
VCR::Request.new \
params[:method],
uri,
params[:body],
headers
end
end
def vcr_response_from(response)
VCR::Response.new \
VCR::ResponseStatus.new(response.status, nil),
response.headers,
response.body,
nil
end
def normalized_headers(headers)
normalized = {}
headers.each do |k, v|
v = v.join(', ') if v.respond_to?(:join)
normalized[k] = v
end
normalized
end
::Excon.stub({}) do |params|
self.new(params).handle
end
end
end
end
end
::Excon.defaults[:mock] = true
# We want to get at the Excon::Connection class but WebMock does
# some constant-replacing stuff to it, so we need to take that into
# account.
excon_connection = if defined?(::WebMock::HttpLibAdapters::ExconConnection)
::WebMock::HttpLibAdapters::ExconConnection.superclass
else
::Excon::Connection
end
excon_connection.class_eval do
def self.new(*args)
super.tap do |instance|
instance.connection[:__construction_args] = args
end
end
end
VCR.configuration.after_library_hooks_loaded do
# ensure WebMock's Excon adapter does not conflict with us here
# (i.e. to double record requests or whatever).
if defined?(WebMock::HttpLibAdapters::ExconAdapter)
WebMock::HttpLibAdapters::ExconAdapter.disable!
end
end
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