rocketmq源码解析client管理取消注册client

说在前面

client管理 取消注册client，更多源码解析请关注“天河聊架构”微信公众号

源码解析
进入这个方法，取消注册client，org.apache.rocketmq.broker.processor.ClientManageProcessor.unregisterClient(ChannelHandlerContext, RemotingCommand)

 public RemotingCommand unregisterClient(ChannelHandlerContext ctx, RemotingCommand request)
        throws RemotingCommandException {
        final RemotingCommand response =
            RemotingCommand.createResponseCommand(UnregisterClientResponseHeader.class);
        final UnregisterClientRequestHeader requestHeader =
            (UnregisterClientRequestHeader) request
                .decodeCommandCustomHeader(UnregisterClientRequestHeader.class);

        ClientChannelInfo clientChannelInfo = new ClientChannelInfo(
            ctx.channel(),
            requestHeader.getClientID(),
            request.getLanguage(),
            request.getVersion());
        {
            final String group = requestHeader.getProducerGroup();
            if (group != null) {
//                取消注册生产者=》
                this.brokerController.getProducerManager().unregisterProducer(group, clientChannelInfo);
            }
        }

        {
            final String group = requestHeader.getConsumerGroup();
            if (group != null) {
//                获取消费组的订阅配置信息=》
                SubscriptionGroupConfig subscriptionGroupConfig =
                    this.brokerController.getSubscriptionGroupManager().findSubscriptionGroupConfig(group);
//                消费组订阅信