java中的接口是类吗
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2022-10-14
Java Kafka 消费积压监控的示例代码
Java Kafka 消费积压监控的示例代码
后端代码：
Monitor.java代码：
package com.suncreate.kafkaConsumerMonitor.service;
import com.suncreate.kafkaConsumerMonitor.model.ConsumerInfo;
import org.apache.kafka.clients.consumer.ConsumerConfig;
import org.apache.kafka.clients.consumer.KafkaConsumer;
import org.apache.kafka.clients.consumer.OffsetAndMetadata;
import org.apache.kafka.common.PartitionInfo;
import org.apache.kafka.common.TopicPartition;
import org.apache.kafka.common.serialization.StringDeserializer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.*;
/**
* kafka消费监控
*
* @author suxiang
*/
public class Monitor {
private static final Logger log = LoggerFactory.getLogger(Monitor.class);
private String servers;
private String topic;
private String groupId;
private long lastTime;
private long lastTotalLag = 0L;
private long lastLogSize = 0L;
private long lastOffset = 0L;
private double lastRatio = 0;
private long speedLogSize = 0L;
private long speedOffset = 0L;
private String time;
private List
private final SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
public long getLastTotalLag() {
return lastTotalLag;
}
public double getLastRatio() {
return lastRatio;
}
public String getTopic() {
return topic;
}
public String getGroupId() {
return groupId;
}
public long getSpeedLogSize() {
return speedLogSize;
}
public long getSpeedOffset() {
return speedOffset;
}
public List
return list;
}
public void setList(List
this.list = list;
}
private KafkaConsumer
private List
private final DecimalFormat decimalFormat = new DecimalFormat("0.00");
public Monitor(String servers, String topic, String groupId) {
this.servers = servers;
this.topic = topic;
this.groupId = groupId;
this.list = new ArrayList<>();
//消费者
Properties properties = new Properties();
properties.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, this.servers);
properties.put(ConsumerConfig.GROUP_ID_CONFIG, this.groupId);
properties.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
properties.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
consumer = new KafkaConsumer
//查询 topic partitions
topicPartitionList = new ArrayList<>();
List
for (PartitionInfo partitionInfo : partitionInfoList) {
TopicPartition topicPartition = new TopicPartition(partitionInfo.topic(), partitionInfo.partition());
topicPartitionList.add(topicPartition);
}
}
public void monitor(boolean addToList) {
try {
long startTime = System.currentTimeMillis();
//查询 log size
Map
Map
for (TopicPartition partitionInfo : endOffsets.keySet()) {
endOffsetMap.put(partitionInfo.partition(), endOffsets.get(partitionInfo));
}
//查询消费 offset
Map
for (TopicPartition topicAndPartition : topicPartitionList) {
OffsetAndMetadata committed = consumer.committed(topicAndPartition);
commitOffsetMap.put(topicAndPartition.partition(), committed.offset());
}
long endTime = System.currentTimeMillis();
log.info("查询logSize和offset耗时:" + (new DecimalFormat("0.000")).format((endTime - startTime) / 1000.0) + " 秒");
startTime = System.currentTimeMillis();
//累加lag
long totalLag = 0L;
long logSize = 0L;
long offset = 0L;
if (endOffsetMap.size() == commitOffsetMap.size()) {
for (Integer partition : endOffsetMap.keySet()) {
long endOffset = endOffsetMap.get(partition);
long commitOffset = commitOffsetMap.get(partition);
long diffOfhttp://fset = endOffset - commitOffset;
totalLag += diffOffset;
logSize += endOffset;
offset += commitOffset;
}
} else {
log.error("Topic:" + topic + " consumer:" + consumer + " topic partitions lost");
}
log.info("Topic:" + topic + " logSize:" + logSize + " offset:" + offset + " totalLag:" + totalLag);
if (lastTime > 0) {
if (System.currentTimeMillis() - lastTime > 0) {
speedLogSize = (long) ((logSize - lastLogSize) / ((System.currentTimeMillis() - lastTime) / 1000.0));
speedOffset = (long) ((offset - lastOffset) / ((System.currentTimeMillis() - lastTime) / 1000.0));
}
if (speedLogSize > 0) {
String strRatio = decimalFormat.format(speedOffset * 100 / (speedLogSize * 1.0));
lastRatio = Double.parseDouble(strRatio);
log.info("Topic:" + topic + " speedLogSize:" + speedLogSize + " speedOffset:" + speedOffset + " 百分比:" + strRatio + "%");
}
}
lastTime = System.currentTimeMillis();
lastTotalLag = totalLag;
lastLogSize = logSize;
lastOffset = offset;
endTime = System.currentTimeMillis();
log.info("计算耗时:" + (new DecimalFormat("0.000")).format((endTime - startTime) / 1000.0) + " 秒");
if (addToList) {
this.setTime(simpleDateFormat.format(new Date()));
this.list.add(new ConsumerInfo(this.getTopic(), this.getGroupId(), this.getLastTotalLag(), this.getLastRatio(), this.getSpeedLogSize(), this.getSpeedOffset(), this.getTime()));
if (this.list.size() > 500) {
this.list.remove(0);
}
}
} catch (Exception e) {
log.error("Monitor error", e);
}
}
}
MonitorService.java代码：
package com.suncreate.kafkaConsumerMonitor.service;
import com.suncreate.kafkaConsumerMonitor.model.ConsumerInfo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import javax.annotation.PostConstruct;
import java.util.*;
@Service
public class MonitorService {
private static final Logger log = LoggerFactory.getLogger(MonitorService.class);
@Value("${kafka.consumer.servers}")
private String servers;
private Monitor monitor;
private List
@PostConstruct
private void Init() {
monitorList = new ArrayList<>();
monitorList.add(new Monitor(servers, "wifiData", "wifi-kafka-hbase"));
monitorList.add(new Monitor(servers, "KK_PASS_INFhttp://O_TYCC", "EXTRACT-SAMPLE"));
monitorList.add(new Monitor(servers, "KK_PASS_INFO_TYCC", "dblrecog-upload2vcn"));
monitorList.add(new Monitor(servers, "KK_PASS_INFO_TYCC_FILTER", "yisa20210521000001"));
monitorList.add(new Monitor(servers, "KK_PASS_INFO_TYCC_FILTER", "kafka-filter-check-19"));
monitorList.add(new Monitor(servers, "motorVehicle", "unifiedstorage-downloader"));
monitorList.add(new Monitor(servers, "motorVehicle", "full-vehicle-data-storage-kafka2ch"));
monitorList.add(new Monitor(servers, "motorVehicle", "vehicle_store"));
monitorList.add(new Monitor(servers, "motorVehicle", "vcn-sk-upload-luyang"));
monitorList.add(new Monitor(servers, "motorVehicle", "vcn-sk-upload-yaohai"));
monitorList.add(new Monitor(servers, "motorVehicle", "vcn-sk-upload-baohe"));
monitorList.add(new Monitor(servers, "peopleFace", "kafka-filter-check-19"));
}
public void monitorOnce(boolean addToList) {
for (Monitor monitor : monitorList) {
monitor.monitor(addToList);
}
}
public List
List
for (Monitor monitor : monitorList) {
list.add(new ConsumerInfo(monitor.getTopic(), monitor.getGroupId(), monitor.getLastTotalLag(), monitor.getLastRatio(), monitor.getSpeedLogSize(), monitor.getSpeedOffset(), monitor.getTime()));
}
return list;
}
public List
for (Monitor monitor : monitorList) {
if (monitor.getTopic().equals(topic) && monitor.getGroupId().equals(groupId)) {
return monitor.getList();
}
}
return new ArrayList<>();
}
}
MonitorConfig.java代码：
package com.suncreate.kafkaConsumerMonitor.task;
import com.suncreate.kafkaConsumerMonitor.service.MonitorService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;
import org.springframework.scheduling.support.CronTrigger;
import java.text.SimpleDateFormat;
@Configuration
@EnableScheduling
public class MonitorConfig implements SchedulingConfigurer {
private static final Logger logger = LoggerFactory.getLogger(MonitorConfig.class);
private String cronExpression = "0 */3 * * * ?";
//private String cronExpression = "*/20 * * * * ?";
private final SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
@Autowired
private MonitorService monitorService;
@Override
public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
taskRegistrar.addTriggerTask(() -> {
monitorService.monitorOnce(true);
}, triggerContext -> new CronTrigger(cronExpression).nextExecutionTime(triggerContext));
}
}
MonitorController.java代码：
package com.suncreate.kafkaConsumerMonitor.controller;
import com.suncreate.kafkaConsumerMonitor.model.ConsumerInfo;
import com.suncreate.kafkaConsumerMonitor.model.LayuiData;
import com.suncreate.kafkaConsumerMonitor.service.MonitorService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
@RequestMapping("/monitor")
public class MonitorController {
@Autowired
private MonitorService monitorService;
@GetMapping("/getConsumers")
public LayuiData getConsumers() {
List
LayuiData data = new LayuiData(list);
return data;
}
@GetMapping("/monitorOnce")
public void monitorOnce() {
monitorService.monitorOnce(false);
}
@GetMapping("/getDetails")
public LayuiData getDetails(String topic, String groupId) {
List
LayuiData data = new LayuiData(list);
return data;
}
}
pom.xml文件(有些东西没用到或者备用，没有删)：
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
前端使用了 Layui 和 ECharts 展示表格和图表
index.css代码：
.div-title {
font-size: 18px;
margin-top: 10px;
margin-left: 10px;
}
.div-right {
text-align: right;
}
.span-red {
color: #ff0000;
}
index.html代码(展示topic、消费者组Consumer GroupId、Total Lag、Kafka数据生产速度、Kafka数据消费速度等)：
detail.html代码(展示单个消费者组的Total Lag、生产速度、消费速度以及Total Lag趋势图)：
效果图：
消费者组列表：
消费者组明细：
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