kaiyu
2021-07-05 9cb298004c7ca4c75ad5faf0234531aa21c99c5c
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package com.moral.api.kafka.consumer;
 
import com.alibaba.fastjson.JSON;
import com.moral.api.entity.Device;
import com.moral.api.entity.Sensor;
import com.moral.api.websocket.SingleDeviceServer;
import org.apache.kafka.clients.consumer.Consumer;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.common.TopicPartition;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.listener.ConsumerSeekAware;
import org.springframework.stereotype.Component;
 
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArraySet;
 
/**
 * @ClassName SecondsDataConsumer1
 * @Description TODO
 * @Author 陈凯裕
 * @Date 2021/6/15 14:49
 * @Version TODO
 **/
@Component
public class SecondDataConsumer implements ConsumerSeekAware {
 
    @KafkaListener(topics = "second_data",groupId = "SecondsDataGroup3")
    public void listen(ConsumerRecord<String, String> record , Consumer consumer) throws Exception {
        String messageStr = record.value();
        Map<String,String> message = (Map<String,String>)JSON.parse(messageStr);
        //System.out.println(message);
        CopyOnWriteArraySet<SingleDeviceServer> sockets = SingleDeviceServer.sockets;
        for (SingleDeviceServer socket : sockets) {
            //判断消息书否数据该socket
            //取出基本信息
            String mac = socket.getMac();
            Map<String, Device> devicesInfo = socket.getDevicesInfo();
            Device device = devicesInfo.get(mac);
            //创建最终消息对象
            Map<String,String> resultMessgae = new HashMap<>();
            //拼接单位
            List<Sensor> sensors = device.getVersion().getSensors();//获取型号所有因子信息
            for (Sensor sensor : sensors) {
                String code = sensor.getCode();
                String showUnit = sensor.getShowUnit();
                //单位转换
                //拼接单位
                String value = message.get(code);
                value+=showUnit;
                resultMessgae.put(sensor.getName(),value);
            }
            resultMessgae.put("DataTime",message.get("DataTime"));
            socket.sendMessage(JSON.toJSONString(resultMessgae));
        }
    }
 
    @Override
    public void registerSeekCallback(ConsumerSeekCallback consumerSeekCallback) {
 
    }
 
    //consumer回调函数,设置从最新的offset开始消费
    @Override
    public void onPartitionsAssigned(Map<TopicPartition, Long> map, ConsumerSeekCallback consumerSeekCallback) {
        map.forEach((t, o) -> consumerSeekCallback.seekToEnd(t.topic(), t.partition()));
    }
 
    @Override
    public void onIdleContainer(Map<TopicPartition, Long> map, ConsumerSeekCallback consumerSeekCallback) {
 
    }
}