rocketmq源碼解析之管理請求查詢客戶端鏈接

說在前面

管理請求 GET_CONSUMER_CONNECTION_LIST 查詢客戶端鏈接

 

源碼解析

進入這個方法org.apache.rocketmq.broker.processor.AdminBrokerProcessor#getConsumerConnectionList 查詢客戶端鏈接

private RemotingCommand getConsumerConnectionList(ChannelHandlerContext ctx,
        RemotingCommand request) throws RemotingCommandException {
        final RemotingCommand response = RemotingCommand.createResponseCommand(null);
        final GetConsumerConnectionListRequestHeader requestHeader =
            (GetConsumerConnectionListRequestHeader) request.decodeCommandCustomHeader(GetConsumerConnectionListRequestHeader.class);
//        獲取消費組信息
        ConsumerGroupInfo consumerGroupInfo =
            this.brokerController.getConsumerManager().getConsumerGroupInfo(requestHeader.getConsumerGroup());
        if (consumerGroupInfo != null) {
//            構建消費者鏈接信息
            ConsumerConnection bodydata = new ConsumerConnection();
            bodydata.setConsumeFromWhere(consumerGroupInfo.getConsumeFromWhere());
            bodydata.setConsumeType(consumerGroupInfo.getConsumeType());
            bodydata.setMessageModel(consumerGroupInfo.getMessageModel());
            bodydata.getSubscriptionTable().putAll(consumerGroupInfo.getSubscriptionTable());
//            遍歷消費組信息中的客戶端鏈接信息
            Iterator<Map.Entry<Channel, ClientChannelInfo>> it = consumerGroupInfo.getChannelInfoTable().entrySet().iterator();
            while (it.hasNext()) {
                ClientChannelInfo info = it.next().getValue();
//                構建客戶端鏈接
                Connection connection = new Connection();
                connection.setClientId(info.getClientId());
                connection.setLanguage(info.getLanguage());
                connection.setVersion(info.getVersion());
                connection.setClientAddr(RemotingHelper.parseChannelRemoteAddr(info.getChannel()));
                bodydata.getConnectionSet().add(connection);
            }

            byte[] body = bodydata.encode();
            response.setBody(body);
            response.setCode(ResponseCode.SUCCESS);
            response.setRemark(null);
            return response;
        }

        response.setCode(ResponseCode.CONSUMER_NOT_ONLINE);
        response.setRemark("the consumer group[" + requestHeader.getConsumerGroup() + "] not online");
        return response;
    }

結束

 

說在最後

本次解析僅表明我的觀點，僅供參考。

 

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