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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
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
def cleanup_view_runtime
yield
end
module ClassMethods
def log_event(name, before, after, instrumenter_id, payload)
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.
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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