Class: RightScale::CloudApi::ResponseParser

Inherits:
Routine show all
Defined in:
lib/base/routines/response_parser.rb

Overview

The routine parses the current response.

The supportes content-types are: xml and json. In the case of any other content-type it does nothing.

Instance Attribute Summary

Attributes inherited from Routine

#data

Instance Method Summary collapse

Methods inherited from Routine

#cloud_api_logger, #execute, #invoke_callback_method, #options, #reset, #with_timer

Instance Method Details

#process ⇒ Object

Main entry point.



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# File 'lib/base/routines/response_parser.rb', line 36

def process
  # There is no way to parse an IO response
  return nil if data[:response][:instance].is_io?

  xml_parser   = Utils::get_xml_parser_class(data[:options][:xml_parser])
  content_type = (data[:response][:instance].headers || {})["content-type"].to_s
  body         = data[:response][:instance].body.to_s

  # If it was explicitly requested not to parse the response then return it as is.
  if data[:options][:raw_response]
    data[:result] = body
    return
  end

  # Find the appropriate parser.
  parser = if body._blank?
             Parser::Plain
           else
             case content_type
             when /xml/              then xml_parser
             when /json|javascript/  then Parser::Json
             else
               if data[:response][:instance].body.to_s[/\A<\?xml /]
                 # Sometimes Amazon does not set a proper header
                 xml_parser
               else
                 Parser::Plain
               end
             end
           end
  # Parse the response
  with_timer("Response parsing with #{parser}") do
    options = {}
    options[:encoding] = 'UTF-8' if /utf-8/i === content_type
    #
    cloud_api_logger.log("Attempting to parse cloud response with: '#{options[:encoding] || 'DEFAULT'}' encoding", :response_parser)
    data[:response][:parsed] = parser::parse(body, options)
  end
  data[:result] = data[:response][:parsed]
end