Question

在我的ROR应用程序中，我有一个要求，即我需要使用来自一个交换机的消息，然后在向头部附加一些额外数据后将其发布到另一个交换机。所以我创建了一个rake任务来启动AMQP。

     EventMachine.run do
        $configurations = Config.new.config
       rmq_configurations = Config.new.rmq
        connection = AMQP.connect(rmq_configurations)
        $channel  = AMQP::Channel.new(connection)
        puts "AMQP listening"
        worker   = MessageHandler.new
        puts "Message handler started"
        worker.start
      end

在Message处理程序类中，我已经定义了交换，如下所示

     def initialize
         @ns_exchange = $configurations["ns_exchange"]
         @sc_exchange = $configurations["sc_exchange"]
         @ns_queue = $configurations["ns_queue"]
         @sc_queue = $configurations["sc_queue"]
       end


    def start
      @ns_x = $channel.direct(ns_exchange, :durable => true)
      @sc_x = $channel.direct(sc_exchange, :durable => true)
      @ns_queue   = $channel.queue(ns_queue, :auto_delete => true)
      @ns_queue.bind(@ns_x, :routing_key => "ipam").subscribe(&method(:handle_ns_message))
      message_headers = {"messageType" => "ipam/operations/ip/checkCanAllocateIP"}
      message_body = {"ipsToAllocate" => "1", "orgId" => "438c6cdd-aa2d-4f3c-bec3-aefb85d6fca5"}
      @ns_x.publish(message_body,  :routing_key => "ipam", :headers => message_headers, :mandatory => true)

      @sc_queue   = ch2.queue(sc_queue, :auto_delete => true)
      @sc_queue.bind(@sc_x, :routing_key => @sc_queue.name).subscribe(&method(:handle_sc_message))
     @sc_x.publish(message_body,  :routing_key => "ipam", :headers => message_headers, :mandatory => true)
     end

只有在我有一次交换时，发布才有效。此外，我永远不想关闭连接，因为AMQP需要始终运行以消耗＆amp;产生消息

Answer 1

我为每个交易所创建单独的渠道后能够发布消息

Rabbitmq - AMQP GEM：无法在多个交换机上发布消息

1 个答案: