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Class: ActionDispatch::ServerTiming::Subscriber

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Instance Chain:
self, ::Singleton
Inherits: Object
Defined in: actionpack/lib/action_dispatch/middleware/server_timing.rb

Constant Summary

Class Method Summary

Instance Attribute Summary

::Singleton - Included

#duplicable?

::Singleton instances are not duplicable:

Instance Method Summary

Constructor Details

.new ⇒ Subscriber

[ GitHub ] 

  


# File 'actionpack/lib/action_dispatch/middleware/server_timing.rb', line 11



def initialize
  @mutex = Mutex.new
end


  







Instance Method Details



  

    #call(event)  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/server_timing.rb', line 15



def call(event)
  if events = ActiveSupport::IsolatedExecutionState[KEY]
    events << event
  end
end


  








  

    #collect_events  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/server_timing.rb', line 21



def collect_events
  events = []
  ActiveSupport::IsolatedExecutionState[KEY] = events
  yield
  events
ensure
  ActiveSupport::IsolatedExecutionState.delete(KEY)
end


  








  

    #ensure_subscribed  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/server_timing.rb', line 30



def ensure_subscribed
  @mutex.synchronize do
    # Subscribe to all events, except those beginning with "!"
    # Ideally we would be more selective of what is being measured
    @subscriber ||= ActiveSupport::Notifications.subscribe(/\A[^!]/, self)
  end
end


  








  

    #unsubscribe  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/server_timing.rb', line 38



def unsubscribe
  @mutex.synchronize do
    ActiveSupport::Notifications.unsubscribe @subscriber
    @subscriber = nil
  end
end