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This is a default queue implementation that ships with Notifications. It just pushes events to all registered log subscribers.

This class is thread safe. All methods are reentrant.

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Methods
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Included Modules
Class Public methods
new()
# File activesupport/lib/active_support/notifications/fanout.rb, line 13
def initialize
  @subscribers = []
  @listeners_for = ThreadSafe::Cache.new
  super
end
Instance Public methods
finish(name, id, payload)
# File activesupport/lib/active_support/notifications/fanout.rb, line 39
def finish(name, id, payload)
  listeners_for(name).each { |s| s.finish(name, id, payload) }
end
listeners_for(name)
# File activesupport/lib/active_support/notifications/fanout.rb, line 47
def listeners_for(name)
  # this is correctly done double-checked locking (ThreadSafe::Cache's lookups have volatile semantics)
  @listeners_for[name] || synchronize do
    # use synchronisation when accessing @subscribers
    @listeners_for[name] ||= @subscribers.select { |s| s.subscribed_to?(name) }
  end
end
listening?(name)
# File activesupport/lib/active_support/notifications/fanout.rb, line 55
def listening?(name)
  listeners_for(name).any?
end
publish(name, *args)
# File activesupport/lib/active_support/notifications/fanout.rb, line 43
def publish(name, *args)
  listeners_for(name).each { |s| s.publish(name, *args) }
end
start(name, id, payload)
# File activesupport/lib/active_support/notifications/fanout.rb, line 35
def start(name, id, payload)
  listeners_for(name).each { |s| s.start(name, id, payload) }
end
subscribe(pattern = nil, block = Proc.new)
# File activesupport/lib/active_support/notifications/fanout.rb, line 19
def subscribe(pattern = nil, block = Proc.new)
  subscriber = Subscribers.new pattern, block
  synchronize do
    @subscribers << subscriber
    @listeners_for.clear
  end
  subscriber
end
unsubscribe(subscriber)
# File activesupport/lib/active_support/notifications/fanout.rb, line 28
def unsubscribe(subscriber)
  synchronize do
    @subscribers.reject! { |s| s.matches?(subscriber) }
    @listeners_for.clear
  end
end
wait()

This is a sync queue, so there is no waiting.

# File activesupport/lib/active_support/notifications/fanout.rb, line 60
def wait
end