Class: Whoosh::Instrumentation

Inherits:
Object
  • Object
show all
Defined in:
lib/whoosh/instrumentation.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Instrumentation

Returns a new instance of Instrumentation.



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# File 'lib/whoosh/instrumentation.rb', line 6

def initialize
  @subscribers = Hash.new { |h, k| h[k] = [] }
end

Instance Method Details

#emit(event, data = {}) ⇒ Object 



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# File 'lib/whoosh/instrumentation.rb', line 14

def emit(event, data = {})
  @subscribers[event].each do |subscriber|
    subscriber.call(data)
  rescue => e
    # Don't let subscriber errors crash the app
  end
end

#on(event, &block) ⇒ Object 



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# File 'lib/whoosh/instrumentation.rb', line 10

def on(event, &block)
  @subscribers[event] << block
end