将Log4j日志实时写入Kafka

其他 2018-08-17 17:24:01 阅读次数: 0
1.创建maven项目，引入依赖
<dependency>
    <groupId>org.apache.kafka</groupId>
    <artifactId>kafka_2.11</artifactId>
    <version>0.11.0.0</version>
</dependency>

<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.16</version>
</dependency>

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.21</version>
    <scope>test</scope>
</dependency>
2.创建log4j.properties

将Log4j日志实时写入Kafka，需要一个核心处理类：
kafka.producer.KafkaLog4jAppender，但是这个类在不同的版本中使用是有差异的，在Kafka0.7和0.8版本中是有这个类的，笔者使用的版本是0.11.0.0，这个版本中是没有这个类的（源码中有，但编译后没有），所有不能直接使用。直接复制下面的类，拷贝到项目中

package com.bigdata.kafka;

import org.apache.kafka.clients.CommonClientConfigs;
import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.Producer;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.clients.producer.RecordMetadata;
import org.apache.kafka.common.config.ConfigException;
import org.apache.kafka.common.config.SslConfigs;
import org.apache.log4j.AppenderSkeleton;
import org.apache.log4j.helpers.LogLog;
import org.apache.log4j.spi.LoggingEvent;

import java.util.Date;
import java.util.Properties;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;

/**
 * A log4j appender that produces log messages to Kafka
 */
public class KafkaLog4jAppender extends AppenderSkeleton {

    private static final String BOOTSTRAP_SERVERS_CONFIG = ProducerConfig.BOOTSTRAP_SERVERS_CONFIG;
    private static final String COMPRESSION_TYPE_CONFIG = ProducerConfig.COMPRESSION_TYPE_CONFIG;
    private static final String ACKS_CONFIG = ProducerConfig.ACKS_CONFIG;
    private static final String RETRIES_CONFIG = ProducerConfig.RETRIES_CONFIG;
    private static final String KEY_SERIALIZER_CLASS_CONFIG = ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG;
    private static final String VALUE_SERIALIZER_CLASS_CONFIG = ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG;
    private static final String SECURITY_PROTOCOL = CommonClientConfigs.SECURITY_PROTOCOL_CONFIG;
    private static final String SSL_TRUSTSTORE_LOCATION = SslConfigs.SSL_TRUSTSTORE_LOCATION_CONFIG;
    private static final String SSL_TRUSTSTORE_PASSWORD = SslConfigs.SSL_TRUSTSTORE_PASSWORD_CONFIG;
    private static final String SSL_KEYSTORE_TYPE = SslConfigs.SSL_KEYSTORE_TYPE_CONFIG;
    private static final String SSL_KEYSTORE_LOCATION = SslConfigs.SSL_KEYSTORE_LOCATION_CONFIG;
    private static final String SSL_KEYSTORE_PASSWORD = SslConfigs.SSL_KEYSTORE_PASSWORD_CONFIG;

    private String brokerList = null;
    private String topic = null;
    private String compressionType = null;
    private String securityProtocol = null;
    private String sslTruststoreLocation = null;
    private String sslTruststorePassword = null;
    private String sslKeystoreType = null;
    private String sslKeystoreLocation = null;
    private String sslKeystorePassword = null;

    private int retries = 0;
    private int requiredNumAcks = Integer.MAX_VALUE;
    private boolean syncSend = false;
    private Producer<byte[], byte[]> producer = null;

    public Producer<byte[], byte[]> getProducer() {
        return producer;
    }

    public String getBrokerList() {
        return brokerList;
    }

    public void setBrokerList(String brokerList) {
        this.brokerList = brokerList;
    }

    public int getRequiredNumAcks() {
        return requiredNumAcks;
    }

    public void setRequiredNumAcks(int requiredNumAcks) {
        this.requiredNumAcks = requiredNumAcks;
    }

    public int getRetries() {
        return retries;
    }

    public void setRetries(int retries) {
        this.retries = retries;
    }

    public String getCompressionType() {
        return compressionType;
    }

    public void setCompressionType(String compressionType) {
        this.compressionType = compressionType;
    }

    public String getTopic() {
        return topic;
    }

    public void setTopic(String topic) {
        this.topic = topic;
    }

    public boolean getSyncSend() {
        return syncSend;
    }

    public void setSyncSend(boolean syncSend) {
        this.syncSend = syncSend;
    }

    public String getSslTruststorePassword() {
        return sslTruststorePassword;
    }

    public String getSslTruststoreLocation() {
        return sslTruststoreLocation;
    }

    public String getSecurityProtocol() {
        return securityProtocol;
    }

    public void setSecurityProtocol(String securityProtocol) {
        this.securityProtocol = securityProtocol;
    }

    public void setSslTruststoreLocation(String sslTruststoreLocation) {
        this.sslTruststoreLocation = sslTruststoreLocation;
    }

    public void setSslTruststorePassword(String sslTruststorePassword) {
        this.sslTruststorePassword = sslTruststorePassword;
    }

    public void setSslKeystorePassword(String sslKeystorePassword) {
        this.sslKeystorePassword = sslKeystorePassword;
    }

    public void setSslKeystoreType(String sslKeystoreType) {
        this.sslKeystoreType = sslKeystoreType;
    }

    public void setSslKeystoreLocation(String sslKeystoreLocation) {
        this.sslKeystoreLocation = sslKeystoreLocation;
    }

    public String getSslKeystoreLocation() {
        return sslKeystoreLocation;
    }

    public String getSslKeystoreType() {
        return sslKeystoreType;
    }

    public String getSslKeystorePassword() {
        return sslKeystorePassword;
    }

    @Override
    public void activateOptions() {
        // check for config parameter validity
        Properties props = new Properties();
        if (brokerList != null)
            props.put(BOOTSTRAP_SERVERS_CONFIG, brokerList);
        if (props.isEmpty())
            throw new ConfigException("The bootstrap servers property should be specified");
        if (topic == null)
            throw new ConfigException("Topic must be specified by the Kafka log4j appender");
        if (compressionType != null)
            props.put(COMPRESSION_TYPE_CONFIG, compressionType);
        if (requiredNumAcks != Integer.MAX_VALUE)
            props.put(ACKS_CONFIG, Integer.toString(requiredNumAcks));
        if (retries > 0)
            props.put(RETRIES_CONFIG, retries);
        if (securityProtocol != null && sslTruststoreLocation != null &&
                sslTruststorePassword != null) {
            props.put(SECURITY_PROTOCOL, securityProtocol);
            props.put(SSL_TRUSTSTORE_LOCATION, sslTruststoreLocation);
            props.put(SSL_TRUSTSTORE_PASSWORD, sslTruststorePassword);

            if (sslKeystoreType != null && sslKeystoreLocation != null &&
                    sslKeystorePassword != null) {
                props.put(SSL_KEYSTORE_TYPE, sslKeystoreType);
                props.put(SSL_KEYSTORE_LOCATION, sslKeystoreLocation);
                props.put(SSL_KEYSTORE_PASSWORD, sslKeystorePassword);
            }
        }

        props.put(KEY_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.ByteArraySerializer");
        props.put(VALUE_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.ByteArraySerializer");
        this.producer = getKafkaProducer(props);
        LogLog.debug("Kafka producer connected to " + brokerList);
        LogLog.debug("Logging for topic: " + topic);
    }

    protected Producer<byte[], byte[]> getKafkaProducer(Properties props) {
        return new KafkaProducer<byte[], byte[]>(props);
    }

    @Override
    protected void append(LoggingEvent event) {
        String message = subAppend(event);
        LogLog.debug("[" + new Date(event.getTimeStamp()) + "]" + message);
        Future<RecordMetadata> response = producer.send(new ProducerRecord<byte[], byte[]>(topic, message.getBytes()));
        if (syncSend) {
            try {
                response.get();
            } catch (InterruptedException ex) {
                throw new RuntimeException(ex);
            } catch (ExecutionException ex) {
                throw new RuntimeException(ex);
            }
        }
    }

    private String subAppend(LoggingEvent event) {
        return (this.layout == null) ? event.getRenderedMessage() : this.layout.format(event);
    }

    public void close() {
        if (!this.closed) {
            this.closed = true;
            producer.close();
        }
    }

    public boolean requiresLayout() {
        return true;
    }
}

然后在log4j.properties中配置如下

log4j.rootLogger=INFO,stdout,kafka

log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.target = System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] [%c] [%p] - %m%n

log4j.appender.kafka = com.bigdata.kafka.KafkaLog4jAppender
log4j.appender.kafka.topic = api_topic
log4j.appender.kafka.brokerList=hadoop000:9092
log4j.appender.kafka.layout=org.apache.log4j.PatternLayout
log4j.appender.kafka.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] [%c] [%p] - %m%n
3.创建KafkaLog4jApp类
package com.bigdata.kafka;

import org.apache.log4j.Logger;

/**
 * 模拟日志产生
 */
public class KafkaLog4jApp {

    private static Logger logger = Logger.getLogger(KafkaLog4jApp.class.getName());

    public static void main(String[] args) throws Exception {
        int index = 0;

        while(true) {
            Thread.sleep(1000);
            logger.info("value is: " + index++);
        }
    }
}

上述完成后启动Kafka（先启动ZK）

kafka-server-start.sh $KAFKA_HOME/config/server.properties
4.创建topic
[hadoop@Master ~]$ kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic log4jtest
Created topic "log4jtest".
[hadoop@Master ~]$ kafka-topics.sh --describe --zookeeper localhost:2181 --topic log4jtest
Topic:log4jtest PartitionCount:1    ReplicationFactor:1 Configs:
    Topic: log4jtest    Partition: 0    Leader: 0   Replicas: 0 Isr: 0
5.启动 Kafka 消费者，运行项目，观察Kafka 消费者的控制台
[hadoop@Master ~]$ kafka-console-consumer.sh --zookeeper localhost:2181 --topic log4jtest
2017-09-28 17:52:15,178 [main] [com.bigdata.kafka.KafkaLog4jApp] [INFO] - value is: 0

2017-09-28 17:52:16,331 [main] [com.bigdata.kafka.KafkaLog4jApp] [INFO] - value is: 1

2017-09-28 17:52:17,332 [main] [com.bigdata.kafka.KafkaLog4jApp] [INFO] - value is: 2

2017-09-28 17:52:18,333 [main] [com.bigdata.kafka.KafkaLog4jApp] [INFO] - value is: 3

2017-09-28 17:52:19,336 [main] [com.bigdata.kafka.KafkaLog4jApp] [INFO] - value is: 4

2017-09-28 17:52:20,337 [main] [com.bigdata.kafka.KafkaLog4jApp] [INFO] - value is: 5

2017-09-28 17:52:21,338 [main] [com.bigdata.kafka.KafkaLog4jApp] [INFO] - value is: 6

2017-09-28 17:52:22,339 [main] [com.bigdata.kafka.KafkaLog4jApp] [INFO] - value is: 7

2017-09-28 17:52:23,354 [main] [com.bigdata.kafka.KafkaLog4jApp] [INFO] - value is: 8

2017-09-28 17:52:24,355 [main] [com.bigdata.kafka.KafkaLog4jApp] [INFO] - value is: 9

2017-09-28 17:52:25,418 [main] [com.bigdata.kafka.KafkaLog4jApp] [INFO] - value is: 10

猜你喜欢

转载自blog.csdn.net/HG_Harvey/article/details/79198562
今日推荐
《美国对全球网络空间安全与发展的威胁和破坏》报告发布
火速冲上 GitHub 热榜 —— 开源编程语言、框架哪有这么可爱？
北京人形机器人创新中心发布全球首个纯电驱拟人奔跑的全尺寸人形机器人“天工”
LFOSSA 源来如此公开课 | 掌握云原生未来：CNCF 认证全面攻略与备考秘籍
周排行
让自己的头脑极度开放
CentOS 6.5(x64) 和Redhat6.5操作系误删libc
高可用注册中心
【日记】12.28/【题解】AtCoder AGC041
XML（5）_XML 约束_DTD
Java集合Map（四）
树梅派安装桌面环境教程
pipenv 的 使用和安装
小程序白屏问题和内存研究
C语言简单选择排序
每日归档
更多
2024-05-02(0)
2024-05-01(4)
2024-04-30(1)
2024-04-29(40)
2024-04-28(0)
2024-04-27(56)
2024-04-26(39)
2024-04-25(22)
2024-04-24(36)
2024-04-23(26)

代码天地 © 2018 codetd.com

境外服务器   最新电视剧2022