Class: ActiveSupport::Notifications::Instrumenter

Inherits:
Object
  • Object
show all
Defined in:
lib/active_support/notifications/instrumenter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(notifier) ⇒ Instrumenter

Returns a new instance of Instrumenter.



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# File 'lib/active_support/notifications/instrumenter.rb', line 9

def initialize(notifier)
  @id = unique_id
  @notifier = notifier
end

Instance Attribute Details

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/active_support/notifications/instrumenter.rb', line 7

def id
  @id
end

Instance Method Details

#instrument(name, payload = {}) ⇒ Object

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



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# File 'lib/active_support/notifications/instrumenter.rb', line 17

def instrument(name, payload={})
  started = Time.now

  begin
    yield
  rescue Exception => e
    payload[:exception] = [e.class.name, e.message]
    raise e
  ensure
    @notifier.publish(name, started, Time.now, @id, payload)
  end
end