RabbitMQでHAを利用したときにClientで例外を吐いてしまう問題
RabbitMQでClusterを組み、ミラーリングを設定して、いざクライアントからデータを流そうとしたら、下記のようなエラーが出てキューを開けなかったので、その対応方法の覚書。
Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method<channel.close>(reply-code=406, reply-text=PRECONDITION_FAILED - inequivalent arg 'x-ha-policy'for queue 'queue_name01ha' in vhost '/': received none but current is the value 'all' of type 'longstr', class-id=50, method-id=10) at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:67) at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:33) at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:361) at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:226) at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:118) ... 67 common frames omitted Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method<channel.close>(reply-code=406, reply-text=PRECONDITION_FAILED - inequivalent arg 'x-ha-policy'for queue 'queue_name01ha' in vhost '/': received none but current is the value 'all' of type 'longstr', class-id=50, method-id=10) at com.rabbitmq.client.impl.ChannelN.asyncShutdown(ChannelN.java:484) at com.rabbitmq.client.impl.ChannelN.processAsync(ChannelN.java:321) at com.rabbitmq.client.impl.AMQChannel.handleCompleteInboundCommand(AMQChannel.java:144) at com.rabbitmq.client.impl.AMQChannel.handleFrame(AMQChannel.java:91) at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:560) ... 1 common frames omitted
Channelでキューを宣言するときに、このメソッドの第六引数で、以下の通りHAを使うという設定を入れてやればOK。
Connection connection = connectionFactory.getConnection(); Channel channel = connection.createChannel(); Map<String, Object> arguments = Maps.newHashMap(); arguments.put("x-ha-policy", "all"); channel.queueDeclare("queue_name01ha", true, true, false, false, arguments);