Class: Lightpanda::Client::Subscriber

Inherits:
Object
  • Object
show all
Defined in:
lib/lightpanda/client/subscriber.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Subscriber

Returns a new instance of Subscriber.



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# File 'lib/lightpanda/client/subscriber.rb', line 6

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

Instance Method Details

#clear ⇒ Object 



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# File 'lib/lightpanda/client/subscriber.rb', line 37

def clear
  @mutex.synchronize { @subscriptions.clear }
end

#dispatch(event, params) ⇒ Object 



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# File 'lib/lightpanda/client/subscriber.rb', line 27

def dispatch(event, params)
  callbacks = @mutex.synchronize { @subscriptions[event].dup }

  callbacks.each { |callback| callback.call(params) }
end

#subscribe(event, &block) ⇒ Object 



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# File 'lib/lightpanda/client/subscriber.rb', line 11

def subscribe(event, &block)
  @mutex.synchronize do
    @subscriptions[event] << block
  end
end

#subscribed?(event) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lightpanda/client/subscriber.rb', line 33

def subscribed?(event)
  @mutex.synchronize { @subscriptions.key?(event) && @subscriptions[event].any? }
end

#unsubscribe(event, block = nil) ⇒ Object 



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# File 'lib/lightpanda/client/subscriber.rb', line 17

def unsubscribe(event, block = nil)
  @mutex.synchronize do
    if block
      @subscriptions[event].delete(block)
    else
      @subscriptions.delete(event)
    end
  end
end