Add an Errors module for handling HP provider specific exceptions.

lib/fog/hp.rb

@@ -4,6 +4,43 @@ module Fog
   module HP
     extend Fog::Provider
 
+    module Errors
+      class ServiceError < Fog::Errors::Error
+        attr_reader :response_data
+
+        def self.slurp(error)
+          if error.response.body.empty?
+            data = nil
+            message = nil
+          else
+            data = MultiJson.decode(error.response.body)
+            message = data['message']
+          end
+
+          new_error = super(error, message)
+          new_error.instance_variable_set(:@response_data, data)
+          new_error
+        end
+      end
+
+      class InternalServerError < ServiceError; end
+      class Conflict < ServiceError; end
+      class NotFound < ServiceError; end
+      class ServiceUnavailable < ServiceError; end
+
+      class BadRequest < ServiceError
+        attr_reader :validation_errors
+
+        def self.slurp(error)
+          new_error = super(error)
+          unless new_error.response_data.nil?
+            new_error.instance_variable_set(:@validation_errors, new_error.response_data['validationErrors'])
+          end
+          new_error
+        end
+      end
+    end
+
     service(:cdn,     'hp/cdn',     'CDN')
     service(:compute, 'hp/compute', 'Compute')
     service(:storage, 'hp/storage', 'Storage')