Class: Aggro::ZeroMQTransport::Subscriber

Inherits:
Object
  • Object
show all
Defined in:
lib/aggro/zeromq_transport/subscriber.rb

Overview

Public: Handles subscribing to messages on a given endpoint.

Defined Under Namespace

Classes: SubscriberAlreadyRunning

Instance Method Summary collapse

Constructor Details

#initialize(endpoint, callable = nil, &block) ⇒ Subscriber

Returns a new instance of Subscriber.



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# File 'lib/aggro/zeromq_transport/subscriber.rb', line 7

def initialize(endpoint, callable = nil, &block)
  fail ArgumentError unless callable || block_given?

  @callable = block_given? ? block : callable
  @endpoint = endpoint
  @mutex = Mutex.new
end

Instance Method Details

#add_subscription(topic) ⇒ Object 



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# File 'lib/aggro/zeromq_transport/subscriber.rb', line 15

def add_subscription(topic)
  start unless @mutex.synchronize { @running }

  @mutex.synchronize { sub_socket.setsockopt ZMQ::SUBSCRIBE, topic }

  self
end

#start ⇒ Object 



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# File 'lib/aggro/zeromq_transport/subscriber.rb', line 23

def start
  @mutex.synchronize do
    return self if @running

    sub_socket
    start_on_thread

    sleep 0.01 until @running
  end

  self
end

#stop ⇒ Object 



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# File 'lib/aggro/zeromq_transport/subscriber.rb', line 36

def stop
  @mutex.synchronize do
    return self unless @running

    @running = false
  end

  self
end