class InnerClientMetricsCallback

def initialize(client_callback, logger = nil)
  unless client_callback.kind_of?(ClientCallback)
    raise "The 'client_callback' parameter must be of '" + ClientCallback.to_s + "' data type"
  end
  if logger != nil
    @logger = logger
  else
    @logger = Logger.new(STDOUT)
  end
  @client_callback = client_callback
end

def on_metrics_error(error)
  @logger.error "Metrics error: " + error.to_s
end

def on_metrics_ready
  @client_callback.on_metrics_processor_ready
end