Celluloid::ZMQ provides Celluloid actors that can interact with 0MQ sockets. Underneath, it's built on the CZTop library. Celluloid::ZMQ was primarily created for the purpose of writing DCell, distributed Celluloid over 0MQ, so before you go building your own distributed Celluloid systems with Celluloid::ZMQ, be sure to give DCell a look and decide if it fits your purposes.

It provides different Celluloid::ZMQ::Socket classes which can be initialized then sent bind or connect. Once bound or connected, the socket can read or send depending on whether it's readable or writable.

You will need the ZeroMQ library and the CZMQ library installed as it's accessed via FFI. See CZTop for installation instructions.

Supported Rubies are MRI >= 2.2, JRuby >= 9.0.4.0, and Rubinius >= 3.7.

The following 0MQ socket types are supported (see types.rb for more info)

• Req / Rep
• Push / Pull
• Pub / Sub
• Dealer / Router

require 'celluloid/zmq'

class Server
  include Celluloid::ZMQ

  def initialize(address)
    @socket = Socket::Pull.new

    begin
      @socket.bind(address)
    rescue IOError
      @socket.close
      raise
    end
  end

  def run
    loop { async.handle_message @socket.read }
  end

  def handle_message(message)
    puts "got message: #{message}"
  end
end

class Client
  include Celluloid::ZMQ

  def initialize(address)
    @socket = Socket::Push.new

    begin
      @socket.connect(address)
    rescue IOError
      @socket.close
      raise
    end
  end

  def write(message)
    @socket << message
    nil
  end
end

addr = 'tcp://127.0.0.1:3435'

server = Server.new(addr)
client = Client.new(addr)

server.async.run
client.write('hi')

sleep

Copyright (c) 2014-2015 Tony Arcieri, Donovan Keme.

Distributed under the MIT License. See LICENSE.txt for further details.