Class: ActionCable::SubscriptionAdapter::SubscriberMap

Inherits:
Object
  • Object
show all
Defined in:
lib/action_cable/subscription_adapter/subscriber_map.rb

Direct Known Subclasses

Async

Defined Under Namespace

Classes: Async, Message

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SubscriberMap

Returns a new instance of SubscriberMap.



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# File 'lib/action_cable/subscription_adapter/subscriber_map.rb', line 21

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

Instance Method Details

#add_channel(channel, on_success) ⇒ Object 



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# File 'lib/action_cable/subscription_adapter/subscriber_map.rb', line 64

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

#add_subscriber(channel, subscriber, on_success) ⇒ Object 



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# File 'lib/action_cable/subscription_adapter/subscriber_map.rb', line 26

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) ⇒ Object 



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

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

  msg = Message.new(message)

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

#invoke_callback(callback, message) ⇒ Object 



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# File 'lib/action_cable/subscription_adapter/subscriber_map.rb', line 71

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

#remove_channel(channel) ⇒ Object 



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# File 'lib/action_cable/subscription_adapter/subscriber_map.rb', line 68

def remove_channel(channel)
end

#remove_subscriber(channel, subscriber) ⇒ Object 



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# File 'lib/action_cable/subscription_adapter/subscriber_map.rb', line 40

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