Class: AdWords::ResponseHandler

Inherits:

SOAP::RPC::CallbackHandler

• Object
• SOAP::RPC::CallbackHandler
• AdWords::ResponseHandler

Defined in:

lib/adwords4r.rb

Overview

Handler class to process response messages for API unit usage and statistics information.

Instance Method Summary

• #initialize(parent) ⇒ ResponseHandler constructor

  Constructor for ResponseHandler.

• #on_callback(method_name, endpoint, envelope, params, fault = false, fault_msg = nil) ⇒ Object

  Handles the callback method.

• #parse_header(header) ⇒ Object

  Parses the value contained in a SOAP response header.

Constructor Details

#initialize(parent) ⇒ ResponseHandler

Constructor for ResponseHandler.

Args:

• parent: AdWords::API object to which the ResponseHandler should be tied

# File 'lib/adwords4r.rb', line 437

def initialize(parent)
  @parent = parent
end

Instance Method Details

#on_callback(method_name, endpoint, envelope, params, fault = false, fault_msg = nil) ⇒ Object

Handles the callback method. Logs the request data and tracks unit usage.

Args:

• method_name: name for the operation that was invoked

• endpoint: the enodpoint URL the request was sent to

• envelope: the envelope for the SOAP response that was received

• params: the parameters that were passed to the method

• fault: whether the request resulted in a fault or not

• fault_msg: the fault message in case of a fault (nil if none)

# File 'lib/adwords4r.rb', line 452

def on_callback(method_name, endpoint, envelope, params, fault = false,
    fault_msg = nil)
  units = nil
  operations = nil
  response_time = nil
  request_id = nil
  operators = nil
  operator_count = nil

  if params and params[0] and params[0].class.to_s =~ /.*::Mutate/
    if params[0].is_a?(Array) and params[0].size >= 1
      operators = Hash.new(0)
      params[0].each do |operation|
        if operation.is_a? Hash and operation[:operator]
          operators[operation[:operator].to_s] += 1
        elsif operation.is_a? Hash and operation['operator']
          operators[operation['operator'].to_s] += 1
        elsif operation.respond_to? 'operator'
          operators[operation.operator.to_s] += 1
        else
          operators['?'] += 1
        end
      end
    else
      if params[0].is_a? Hash and params[0][:operator]
        operators[params[0][:operator].to_s] += 1
      elsif params[0].is_a? Hash and params[0]['operator']
        operators[params[0]['operator'].to_s] += 1
      elsif params[0].respond_to? 'operator'
        operators[params[0].operator.to_s] += 1
      end
    end
  end

  if operators
    operator_count = operators.map { |op, num| "#{op}: #{num}" }.join(', ')
  end

  header = envelope.header if envelope
  if header and header.key?('ResponseHeader')
    header = header['ResponseHeader'].element
  end

  if header
    @parent.mutex.synchronize do
      units = parse_header(header['units'])
      unless units.nil?
        @parent.last_units = units.to_i
        @parent.total_units = @parent.total_units + units.to_i
      end

      operations = parse_header(header['operations'])
      response_time = parse_header(header['responseTime'])
      request_id = parse_header(header['requestId'])
    end
  end

  host = URI.parse(endpoint).host

  data = "host=#{host} method=#{method_name} " +
    "responseTime=#{response_time} operations=#{operations} "

  data += "operators={#{operator_count}} " if operator_count

  data += "units=#{units} requestId=#{request_id} "

  data += "isFault=#{(!!fault).to_s} "

  if fault_msg
    data += "faultMessage=\"#{fault_msg}\""
  else
    data += "faultMessage=none"
  end

  @parent.unit_logger << data
end

#parse_header(header) ⇒ Object

Parses the value contained in a SOAP response header.

Args:

• header: an object representing a SOAP header

Returns: The value contained in the header as a string, or nil if the header is nil

# File 'lib/adwords4r.rb', line 537

def parse_header(header)
  if header.nil?
    return nil
  end

  header_element = header
  if header.instance_variable_defined?('@element')
    header_element = header.element
  end

  return header_element.text
end