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#-------------------------------------------------------------------------
# # Copyright (c) Microsoft and contributors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#--------------------------------------------------------------------------
require 'azure/core/error'
require 'nokogiri'
require 'json'
module Azure
module Core
module Http
# Public: Class for handling all HTTP response errors
class HTTPError < Azure::Core::Error
# Public: Detail of the response
#
# Returns an Azure::Core::Http::HttpResponse object
attr :http_response
# Public: The request URI
#
# Returns a String
attr :uri
# Public: The HTTP status code of this error
#
# Returns a Fixnum
attr :status_code
# Public: The type of error
#
# http://msdn.microsoft.com/en-us/library/azure/dd179357
#
# Returns a String
attr :type
# Public: Description of the error
#
# Returns a String
attr :description
# Public: Detail of the error
#
# Returns a String
attr :detail
# Public: The header name whose value is invalid
#
# Returns a String
attr :header
# Public: The invalid header value
#
# Returns a String
attr :header_value
# Public: Initialize an error
#
# http_response - An Azure::Core::HttpResponse
def initialize(http_response)
@http_response = http_response
@uri = http_response.uri
@status_code = http_response.status_code
parse_response
# Use reason phrase as the description if description is empty
@description = http_response.reason_phrase if (@description.nil? || @description.empty?) && http_response.reason_phrase
super("#{type} (#{status_code}): #{description}")
end
# Extract the relevant information from the response's body. If the response
# body is not an XML, we return an 'Unknown' error with the entire body as
# the description
#
# Returns nothing
def parse_response
if @http_response.body && @http_response.respond_to?(:headers) && @http_response.headers['Content-Type']
if @http_response.headers['Content-Type'].include?('xml')
parse_xml_response
elsif @http_response.headers['Content-Type'].include?('json')
parse_json_response
end
else
parse_unknown_response
end
end
def parse_xml_response
document = Nokogiri.Slop(@http_response.body)
@type = document.css('code').first.text if document.css('code').any?
@type = document.css('Code').first.text if document.css('Code').any?
@description = document.css('message').first.text if document.css('message').any?
@description = document.css('Message').first.text if document.css('Message').any?
@header = document.css('headername').first.text if document.css('headername').any?
@header = document.css('HeaderName').first.text if document.css('HeaderName').any?
@header_value = document.css('headervalue').first.text if document.css('headervalue').any?
@header_value = document.css('HeaderValue').first.text if document.css('HeaderValue').any?
# service bus uses detail instead of message
@detail = document.css('detail').first.text if document.css('detail').any?
@detail = document.css('Detail').first.text if document.css('Detail').any?
end
def parse_json_response
odata_error = JSON.parse(@http_response.body)['odata.error']
@type = odata_error['code']
@description = odata_error['message']['value']
end
def parse_unknown_response
@type = 'Unknown'
if @http_response.body
@description = "#{@http_response.body.strip}"
end
end
def inspect
string = "#<#{self.class.name}:#{self.object_id} "
fields = self.instance_variables.map{|field| "#{field}: #{self.send(field.to_s.delete("@")).inspect}"}
string << fields.join(", ") << ">"
end
end
end
end
end
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