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Diffstat (limited to 'actionpack/lib/action_controller/metal/logger.rb')
| -rw-r--r-- | actionpack/lib/action_controller/metal/logger.rb | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/metal/logger.rb b/actionpack/lib/action_controller/metal/logger.rb new file mode 100644 index 0000000000..4f4370e5f0 --- /dev/null +++ b/actionpack/lib/action_controller/metal/logger.rb @@ -0,0 +1,89 @@ +require 'abstract_controller/logger' + +module ActionController + # Adds instrumentation to <tt>process_action</tt> and a <tt>log_event</tt> method + # responsible to log events from ActiveSupport::Notifications. This module handles + # :process_action and :render_template events but allows any other module to hook + # into log_event and provide its own logging facilities (as in ActionController::Caching). + module Logger + extend ActiveSupport::Concern + + included do + include AbstractController::Logger + end + + attr_internal :view_runtime + + def process_action(action) + ActiveSupport::Notifications.instrument(: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 + + # If you want to remove any time taken into account in :view_runtime + # wrongly, you can do it here: + # + # def cleanup_view_runtime + # super - time_taken_in_something_expensive + # end + # + # :api: plugin + def cleanup_view_runtime #:nodoc: + yield + end + + module ClassMethods + # This is the hook invoked by ActiveSupport::Notifications.subscribe. + # If you need to log any event, overwrite the method and do it here. + def log_event(name, before, after, instrumenter_id, payload) #:nodoc: + if name == :process_action + duration = [(after - before) * 1000, 0.01].max + controller = payload[:controller] + request = controller.request + + logger.info "\n\nProcessed #{controller.class.name}##{payload[:action]} " \ + "to #{request.formats} (for #{request.remote_ip} at #{before.to_s(:db)}) " \ + "[#{request.method.to_s.upcase}]" + + log_process_action(controller) + + message = "Completed in %.0fms" % duration + message << " | #{controller.response.status}" + message << " [#{request.request_uri rescue "unknown"}]" + + logger.info(message) + elsif name == :render_template + # TODO Make render_template logging work if you are using just ActionView + duration = (after - before) * 1000 + message = "Rendered #{payload[:identifier]}" + message << " within #{payload[:layout]}" if payload[:layout] + message << (" (%.1fms)" % duration) + logger.info(message) + end + end + + protected + + # A hook which allows logging 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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