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<ConsumerInfo> 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<ConsumerInfo> getList() {
        return list;
    }

    public void setList(List<ConsumerInfo> list) {
        this.list = list;
    }

    private KafkaConsumer<String, String> consumer;

    private List<TopicPartition> topicPartitionList;

    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<String, String>(properties);

        //查询 topic partitions
        topicPartitionList = new ArrayList<>();
        List<PartitionInfo> partitionInfoList = consumer.partitionsFor(topic);
        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<Integer, Long> endOffsetMap = new HashMap<>();
            Map<TopicPartition, Long> endOffsets = consumer.endOffsets(topicPartitionList);
            for (TopicPartition partitionInfo : endOffsets.keySet()) {
                endOffsetMap.put(partitionInfo.partition(), endOffsets.get(partitionInfo));
            }

            //查询消费 offset
            Map<Integer, Long> commitOffsetMap = new HashMap<>();
            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 diffOffset = 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<Monitor> monitorList;

    @PostConstruct
    private void Init() {
        monitorList = new ArrayList<>();

        monitorList.add(new Monitor(servers, "wifiData", "wifi-kafka-hbase"));
        monitorList.add(new Monitor(servers, "KK_PASS_INFO_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<ConsumerInfo> getConsumerList() {
        List<ConsumerInfo> list = new ArrayList<>();

        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<ConsumerInfo> getDetails(String topic, String groupId) {
        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<ConsumerInfo> list = monitorService.getConsumerList();

        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<ConsumerInfo> list = monitorService.getDetails(topic, groupId);

        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)：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.suncreate</groupId>
    <artifactId>kafka-consumer-monitor</artifactId>
    <version>1.0</version>
    <name>kafka-consumer-monitor</name>
    <description>Kafka消费积压监控预警</description>

    <properties>
        <java.version>1.8</java.version>
        <elasticsearch.version>6.1.4</elasticsearch.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.54</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.kafka</groupId>
            <artifactId>spring-kafka-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.8.0</version>
        </dependency>
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-high-level-client</artifactId>
            <version>6.1.4</version>
        </dependency>

        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc6</artifactId>
            <version>11.1.0.7.0</version>
        </dependency>

        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka_2.11</artifactId>
            <version>0.11.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka-clients</artifactId>
            <version>0.11.0.1</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>8</source>
                    <target>8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

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)：

<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="css/index.css" rel="external nofollow"  rel="external nofollow" >
    <link rel="stylesheet" href="js/layui-v2.6.8/css/layui.css" rel="external nofollow"  rel="external nofollow"  media="all">
    <script type="text/javascript" src="js/jquery-1.7.1.js"></script>
    <script type="text/javascript" src="js/layui-v2.6.8/layui.js" charset="utf-8"></script>
</head>
<body>

<div class="div-title">Kafka 监控
    <button type="button" class="layui-btn layui-btn-sm" onclick="refreshTable()">刷新</button>
</div>
<table class="layui-hide" id="myTable"></table>

<script type="text/javascript">
    var myTable;

    layui.use("table", function () {
        var table = layui.table;

        myTable = table.render({
            elem: "#myTable",
            url: "/home/monitor/getConsumers",
            cellMinWidth: 80, //全局定义常规单元格的最小宽度
            cols: [[
                {field: "topic", width: 300, title: "topic", sort: true},
                {field: "groupId", width: 300, title: "groupId"},
                {
                    field: "totalLag", width: 150, title: "Total Lag", sort: true, templet: function (d) {
                        if (d.delayDay * 24 > 2) {
                            return "<div class="div-right"><span class="span-red">" + d.totalLag + "</span></div>"
                        } else {
                            return "<div class="div-right"><span>" + d.totalLag + "</span></div>"
                        }
                    }
                },
                {
                    field: "speedLogSize", width: 150, title: "生产速度(条/秒)", templet: function (d) {
                        return "<div class="div-right">" + d.speedLogSize + "</div>"
                    }
                },
                {
                    field: "speedOffset", width: 150, title: "消费速度(条/秒)", templet: function (d) {
                        return "<div class="div-right">" + d.speedOffset + "</div>"
                    }
                },
                {
                    field: "ratio", width: 100, title: "消费/生产", templet: function (d) {
                        if (d.ratio < 90) {
                            return "<div class="div-right"><span class="span-red">" + d.ratio + "%</span></div>"
                        } else {
                            return "<div class="div-right"><span>" + d.ratio + "%</span></div>"
                        }
                    }
                },
                {
                    field: "delayDay", width: 150, title: "积压(天)", sort: true, templet: function (d) {
                        if (d.delayDay * 24 > 2) {
                            return "<div class="div-right"><span class="span-red">" + d.delayDay + "</span></div>"
                        } else {
                            return "<div class="div-right"><span>" + d.delayDay + "</span></div>"
                        }
                    }
                },
                {
                    field: "ope", width: 100, title: "操作", templet: function (d) {
                        return "<a href="/home/detail.html?topic=" + d.topic + "&groupId=" + d.groupId + "" rel="external nofollow"  target="_blank" class="layui-btn layui-btn-sm" >详细</a>";
                    }
                }
            ]]
        });
    });

    function refreshTable() {
        if (myTable) {
            myTable.reload();
        }
    }

    setInterval(function () {
        refreshTable();
    }, 30000);

    // setInterval(function () {
    //     $.get("/home/monitor/monitorOnce");
    // }, 30000);
</script>

</body>
</html>

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)：

<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="css/index.css" rel="external nofollow"  rel="external nofollow" >
    <link rel="stylesheet" href="js/layui-v2.6.8/css/layui.css" rel="external nofollow"  rel="external nofollow"  media="all">
    <script type="text/javascript" src="js/jquery-1.7.1.js"></script>
    <script type="text/javascript" src="js/layui-v2.6.8/layui.js" charset="utf-8"></script>
    <script type="text/javascript" src="js/echarts-v4.7.0/echarts.min.js"></script>
</head>
<body>

<div class="div-title"><span id="detailTitle"></span> 明细
    <button type="button" class="layui-btn layui-btn-sm" onclick="refreshTable()">刷新</button>
</div>
<div id="main" style="height:400px;"></div>
<table class="layui-hide" id="test"></table>

<script type="text/javascript">
    var myTable;
    var topic = getQueryVariable("topic");
    var groupId = getQueryVariable("groupId");

    $("#detailTitle").html(topic + "  " + groupId);

    layui.use("table", function () {
        var table = layui.table;

        myTable = table.render({
            elem: "#test",
            url: "/home/monitor/getDetails?topic=" + topic + "&groupId=" + groupId,
            cellMinWidth: 80, //全局定义常规单元格的最小宽度
            initSort: {
                field: "time", //排序字段，对应 cols 设定的各字段名
                type: "desc" //排序方式  asc: 升序、desc: 降序、null: 默认排序
            },
            cols: [[
                {field: "topic", width: 300, title: "topic"},
                {field: "groupId", width: 300, title: "groupId"},
                {field: "time", width: 180, title: "时间", sort: true},
                {
                    field: "totalLag", width: 150, title: "Total Lag", templet: function (d) {
                        if (d.delayDay * 24 > 2) {
                            return "<div class="div-right"><span class="span-red">" + d.totalLag + "</span></div>"
                        } else {
                            return "<div class="div-right"><span>" + d.totalLag + "</span></div>"
                        }
                    }
                },
                {
                    field: "speedLogSize", width: 150, title: "生产速度(条/秒)", templet: function (d) {
                        return "<div class="div-right">" + d.speedLogSize + "</div>"
                    }
                },
                {
                    field: "speedOffset", width: 150, title: "消费速度(条/秒)", templet: function (d) {
                        return "<div class="div-right">" + d.speedOffset + "</div>"
                    }
                },
                {
                    field: "ratio", width: 100, title: "消费/生产", templet: function (d) {
                        if (d.ratio < 90) {
                            return "<div class="div-right"><span class="span-red">" + d.ratio + "%</span></div>"
                        } else {
                            return "<div class="div-right"><span>" + d.ratio + "%</span></div>"
                        }
                    }
                },
                {
                    field: "delayDay", width: 150, title: "积压(天)", templet: function (d) {
                        if (d.delayDay * 24 > 2) {
                            return "<div class="div-right"><span class="span-red">" + d.delayDay + "</span></div>"
                        } else {
                            return "<div class="div-right"><span>" + d.delayDay + "</span></div>"
                        }
                    }
                }
            ]]
        });
    });

    function refreshTable() {
        if (myTable) {
            myTable.reload();
        }
        showChart();
    }

    setInterval(function () {
        refreshTable();
    }, 30000);

    function getQueryVariable(variable) {
        var query = window.location.search.substring(1);
        var vars = query.split("&");
        for (var i = 0; i < vars.length; i++) {
            var pair = vars[i].split("=");
            if (pair[0] == variable) {
                return pair[1];
            }
        }
        return (false);
    }

    function showChart() {
        $.ajax({
            type: "GET",
            url: "/home/monitor/getDetails?topic=" + topic + "&groupId=" + groupId,
            success: function (data) {
                if (data && data.data && data.data.length > 1) {
                    debugger;
                    var chartDom = document.getElementById("main");
                    var myChart = echarts.init(chartDom);
                    var option;

                    var xAxis = [];
                    var serseis = [];
                    for (var i = 0; i < data.data.length; i++) {
                        xAxis.push(data.data[i].time);
                        serseis.push(data.data[i].totalLag);

                    }

                    option = {
                        title: {
                            show: true,
                            text: "Total Lag 趋势图",
                            x: "center"
                        },
                        xAxis: {
                            type: "category",
                            data: xAxis
                        },
                        yAxis: {
                            type: "value"
                        },
                        series: [{
                            data: serseis,
                            type: "line"
                        }]
                    };

                    myChart.setOption(option);
                }
            }
        });
    }

    showChart();

</script>

</body>
</html>

效果图：

消费者组列表：

Java Kafka 消费积压监控的示例代码