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excon.rb
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excon.rb
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require 'excon'
module VCR
module HttpStubbingAdapters
module Excon
include VCR::HttpStubbingAdapters::Common
extend self
class HttpConnectionNotAllowedError < StandardError; end
MINIMUM_VERSION = '0.6.5'
MAXIMUM_VERSION = '0.6'
private
def version
::Excon::VERSION
end
class RequestHandler
attr_reader :params
def initialize(params)
@params = params
end
def handle
case
when request_should_be_ignored?
perform_real_request
when stubbed_response
stubbed_response
when http_connections_allowed?
record_interaction
else
raise_connections_disabled_error
end
end
private
def request_should_be_ignored?
VCR::HttpStubbingAdapters::Excon.uri_should_be_ignored?(uri)
end
def stubbed_response
@stubbed_response ||= begin
if stubbed_response = VCR::HttpStubbingAdapters::Excon.stubbed_response_for(vcr_request)
{
:body => stubbed_response.body,
:headers => normalized_headers(stubbed_response.headers || {}),
:status => stubbed_response.status.code
}
end
end
end
def http_connections_allowed?
VCR::HttpStubbingAdapters::Excon.http_connections_allowed?
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
def perform_real_request
connection = ::Excon.new(uri)
response = begin
connection.request(params.merge(:mock => false))
rescue ::Excon::Errors::Error => e
yield response_from_excon_error(e) if block_given?
raise e
end
yield response if block_given?
response.attributes
end
def record_interaction
perform_real_request do |response|
if VCR::HttpStubbingAdapters::Excon.enabled?
http_interaction = http_interaction_for(response)
VCR.record_http_interaction(http_interaction)
end
end
end
def uri
@uri ||= "#{params[:scheme]}://#{params[:host]}:#{params[:port]}#{params[:path]}#{query}"
end
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(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(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[normalize_header_key(k)] = v
end
normalized
end
def normalize_header_key(key)
key.split('-'). # 'user-agent' => %w(user agent)
each { |w| w.capitalize! }. # => %w(User Agent)
join('-')
end
def raise_connections_disabled_error
raise HttpConnectionNotAllowedError.new(
"Real HTTP connections are disabled. Request: #{params[:method]} #{uri}"
)
end
::Excon.stub({}) do |params|
self.new(params).handle
end
end
end
end
end
Excon.mock = true
VCR::HttpStubbingAdapters::Common.add_vcr_info_to_exception_message(VCR::HttpStubbingAdapters::Excon::HttpConnectionNotAllowedError)