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Class: ActionCable::SubscriptionAdapter::SubscriberMap

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
Async::AsyncSubscriberMap, PostgreSQL::Listener, Redis::Listener
Inherits: Object
Defined in: actioncable/lib/action_cable/subscription_adapter/subscriber_map.rb

Class Method Summary

Instance Method Summary

Constructor Details

.new ⇒ SubscriberMap

[ GitHub ] 

  


# File 'actioncable/lib/action_cable/subscription_adapter/subscriber_map.rb', line 6



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


  







Instance Method Details



  

    #add_channel(channel, on_success)  
  

  [ GitHub ]


  

  


# File 'actioncable/lib/action_cable/subscription_adapter/subscriber_map.rb', line 47



def add_channel(channel, on_success)
  on_success.call if on_success
end


  








  

    #add_subscriber(channel, subscriber, on_success)  
  

  [ GitHub ]


  

  


# File 'actioncable/lib/action_cable/subscription_adapter/subscriber_map.rb', line 11



def add_subscriber(channel, subscriber, on_success)
  @sync.synchronize do
    new_channel = !@subscribers.key?(channel)

    @subscribers[channel] << subscriber

    if new_channel
      add_channel channel, on_success
    elsif on_success
      on_success.call
    end
  end
end


  








  

    #broadcast(channel, message)  
  

  [ GitHub ]


  

  


# File 'actioncable/lib/action_cable/subscription_adapter/subscriber_map.rb', line 36



def broadcast(channel, message)
  list = @sync.synchronize do
    return if !@subscribers.key?(channel)
    @subscribers[channel].dup
  end

  list.each do |subscriber|
    invoke_callback(subscriber, message)
  end
end


  








  

    #invoke_callback(callback, message)  
  

  [ GitHub ]


  

  


# File 'actioncable/lib/action_cable/subscription_adapter/subscriber_map.rb', line 54



def invoke_callback(callback, message)
  callback.call message
end


  








  

    #remove_channel(channel)  
  

  [ GitHub ]


  

  


# File 'actioncable/lib/action_cable/subscription_adapter/subscriber_map.rb', line 51



def remove_channel(channel)
end


  








  

    #remove_subscriber(channel, subscriber)  
  

  [ GitHub ]


  

  


# File 'actioncable/lib/action_cable/subscription_adapter/subscriber_map.rb', line 25



def remove_subscriber(channel, subscriber)
  @sync.synchronize do
    @subscribers[channel].delete(subscriber)

    if @subscribers[channel].empty?
      @subscribers.delete channel
      remove_channel channel
    end
  end
end