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require 'abstract_controller/logger'
module ActionController
# Adds instrumentation to several ends in ActionController::Base. It also provides
# some hooks related with process_action logging and view runtime.
module Instrumentation
extend ActiveSupport::Concern
included do
include AbstractController::Logger
end
attr_internal :view_runtime
def process_action(action, *args)
ActiveSupport::Notifications.instrument("action_controller.process_action",
:controller => self, :action => action) do
super
end
end
def render(*args, &block)
if logger
render_output = nil
self.view_runtime = cleanup_view_runtime do
Benchmark.ms { render_output = super }
end
render_output
else
super
end
end
def send_file(path, options={})
ActiveSupport::Notifications.instrument("action_controller.send_file",
options.merge(:path => path)) do
super
end
end
def send_data(data, options = {})
ActiveSupport::Notifications.instrument("action_controller.send_data", options) do
super
end
end
def redirect_to(*args)
super
ActiveSupport::Notifications.instrument("action_controller.redirect_to",
:status => self.status, :location => self.location)
end
# A hook which allows you to clean up any time taken into account in
# views wrongly, like database querying time.
#
# def cleanup_view_runtime
# super - time_taken_in_something_expensive
# end
#
# :api: plugin
def cleanup_view_runtime #:nodoc:
yield
end
module ClassMethods
# A hook which allows other frameworks to log what happened during
# controller process action.
# :api: plugin
def log_process_action(controller) #:nodoc:
view_runtime = controller.send :view_runtime
logger.info(" View runtime: %.1fms" % view_runtime.to_f) if view_runtime
end
end
end
end
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