Module: NetuitiveRailsAgent::RequestDataHook

Includes:
ControllerUtils
Defined in:
lib/netuitive_rails_agent/request_data.rb

Constant Summary collapse

HEADERS_NAMES = 
[
  'HTTP_X_REQUEST_START'.freeze,
  'HTTP_X_QUEUE_START'.freeze,
  'HTTP_X_MIDDLEWARE_START'.freeze
].freeze

Class Method Summary collapse

Instance Method Summary collapse

Methods included from ControllerUtils

#netuitive_action_name, #netuitive_controller_name, #netuitive_request_uri

Class Method Details

.header_start_time(headers) ⇒ Object 



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# File 'lib/netuitive_rails_agent/request_data.rb', line 11

def self.header_start_time(headers)
  NetuitiveRailsAgent::ErrorLogger.guard('error during header_start_time') do
    if headers
      start_time = nil
      HEADERS_NAMES.each do |header_name|
        header = headers[header_name]
        next if header.nil?
        match = /\d+(\.\d{1,2})?/.match(header)
        if match.nil?
          NetuitiveRailsAgent::NetuitiveLogger.log.error "queue time header value #{header} is not recognized"
          next
        end
        header_time = match.to_s.to_f / NetuitiveRailsAgent::ConfigManager.queue_time_divisor
        NetuitiveRailsAgent::NetuitiveLogger.log.debug "queue header_time: #{header_time}"
        start_time = start_time.nil? || header_time < start_time ? header_time : start_time
        NetuitiveRailsAgent::NetuitiveLogger.log.debug "queue start_time: #{start_time}"
      end
      return nil if start_time.nil?
      return (Time.now.to_f - start_time) * 1000.0
    end
  end
  nil
end

Instance Method Details

#netuitive_request_hook ⇒ Object 



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# File 'lib/netuitive_rails_agent/request_data.rb', line 35

def netuitive_request_hook
  return unless request
  NetuitiveRailsAgent::ErrorLogger.guard('error during netuitive_request_hook') do
    queue_time = NetuitiveRailsAgent::RequestDataHook.header_start_time(request.headers)
    if queue_time.nil?
      NetuitiveRailsAgent::NetuitiveLogger.log.info 'no queue time header found for request'
      return
    end
    NetuitiveRailsAgent::NetuitiveLogger.log.debug "queue_time: #{queue_time}"
    NetuitiveRailsAgent::NetuitiveLogger.log.debug 'sending queue_time metrics'
    NetuitiveRubyAPI.add_sample('action_controller.request.queue_time', queue_time)
    return unless netuitive_controller_name
    NetuitiveRailsAgent::NetuitiveLogger.log.debug "sending queue_time metrics with netuitive_controller_name #{netuitive_controller_name}"
    NetuitiveRubyAPI.add_sample("action_controller.#{netuitive_controller_name}.request.queue_time", queue_time)
    return unless netuitive_action_name
    NetuitiveRailsAgent::NetuitiveLogger.log.debug "sending queue_time metrics with netuitive_action_name #{netuitive_action_name}"
    NetuitiveRubyAPI.add_sample("action_controller.#{netuitive_controller_name}.#{netuitive_action_name}.request.queue_time", queue_time)
  end
end