ActiveSupport::Notifications::Instrumenter
class ActiveSupport::Notifications::Instrumenter
Instrumenters are stored in a thread local.
Attributes
id[R]
Public Class Methods
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 9 def initialize(notifier) @id = unique_id @notifier = notifier end
Public Instance Methods
Send a finish notification with name
and payload
.
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 37 def finish(name, payload) @notifier.finish name, @id, payload end
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 41 def finish_with_state(listeners_state, name, payload) @notifier.finish name, @id, payload, listeners_state end
Instrument the given block by measuring the time taken to execute it and publish it. Notice that events get sent even if an error occurs in the passed-in block.
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 17 def instrument(name, payload = {}) # some of the listeners might have state listeners_state = start name, payload begin yield payload rescue Exception => e payload[:exception] = [e.class.name, e.message] payload[:exception_object] = e raise e ensure finish_with_state listeners_state, name, payload end end
Send a start notification with name
and payload
.
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 32 def start(name, payload) @notifier.start name, @id, payload end
© 2004–2017 David Heinemeier Hansson
Licensed under the MIT License.