module ActionController::Instrumentation - actionpack-4.2.3 Documentation

# module ActionController::Instrumentation

Adds instrumentation to several ends in ActionController::Base. It also provides some hooks related with #process_action, this allows an ORM like Active Record and/or DataMapper to plug in ActionController and show related information.

Check ActiveRecord::Railties::ControllerRuntime for an example.

### Public Instance Methods

process_action(*args) click to toggle source
Calls superclass method

    # File lib/action_controller/metal/instrumentation.rb, line 18
    def process_action(*args)
      raw_payload = {
        :controller => self.class.name,
        :action     => self.action_name,
        :params     => request.filtered_parameters,
        :format     => request.format.try(:ref),
        :method     => request.request_method,
        :path       => (request.fullpath rescue "unknown")
      }

      ActiveSupport::Notifications.instrument("start_processing.action_controller", raw_payload.dup)

      ActiveSupport::Notifications.instrument("process_action.action_controller", raw_payload) do |payload|
        begin
          result = super
          payload[:status] = response.status
          result
        ensure
          append_info_to_payload(payload)
        end
      end
    end

redirect_to(*args) click to toggle source
Calls superclass method

    # File lib/action_controller/metal/instrumentation.rb, line 62
    def redirect_to(*args)
      ActiveSupport::Notifications.instrument("redirect_to.action_controller") do |payload|
        result = super
        payload[:status]   = response.status
        payload[:location] = response.filtered_location
        result
      end
    end

render(*args) click to toggle source
Calls superclass method

    # File lib/action_controller/metal/instrumentation.rb, line 41
    def render(*args)
      render_output = nil
      self.view_runtime = cleanup_view_runtime do
        Benchmark.ms { render_output = super }
      end
      render_output
    end

send_data(data, options = {}) click to toggle source
Calls superclass method

    # File lib/action_controller/metal/instrumentation.rb, line 56
    def send_data(data, options = {})
      ActiveSupport::Notifications.instrument("send_data.action_controller", options) do
        super
      end
    end

send_file(path, options={}) click to toggle source
Calls superclass method

    # File lib/action_controller/metal/instrumentation.rb, line 49
    def send_file(path, options={})
      ActiveSupport::Notifications.instrument("send_file.action_controller",
        options.merge(:path => path)) do
        super
      end
    end

### Private Instance Methods

halted_callback_hook(filter) click to toggle source

A hook invoked every time a before callback is halted.

    # File lib/action_controller/metal/instrumentation.rb, line 74
    def halted_callback_hook(filter)
      ActiveSupport::Notifications.instrument("halted_callback.action_controller", :filter => filter)
    end