Flume 抓取日志文件存入MySQL中

代码如下：

/** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements.  See the NOTICE file * distributed with this work for additional information * regarding copyright ownership.  The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License.  You may obtain a copy of the License at * *     http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package org.flume.mysql.sink;/** * create by yong 2016-6-16 */import com.google.common.base.Preconditions;import com.google.common.base.Throwables;import com.google.common.collect.Lists;import org.apache.flume.*;import org.apache.flume.conf.Configurable;import org.apache.flume.sink.AbstractSink;import org.slf4j.Logger;import org.slf4j.LoggerFactory; import java.sql.Connection;import java.sql.DriverManager;import java.sql.PreparedStatement;import java.sql.SQLException;import java.util.List; public class MysqlSink extends AbstractSink implements Configurable {     private Logger LOG = LoggerFactory.getLogger(MysqlSink.class);    private String hostname;    private String port;    private String databaseName;    private String tableName;    private String user;    private String password;    private PreparedStatement preparedStatement;    private Connection conn;    private int batchSize;     public MysqlSink() {        LOG.info("MysqlSink start...");    }     public void configure(Context context) {        hostname = context.getString("hostname");        Preconditions.checkNotNull(hostname, "hostname must be set!!");        port = context.getString("port");        Preconditions.checkNotNull(port, "port must be set!!");        databaseName = context.getString("databaseName");        Preconditions.checkNotNull(databaseName, "databaseName must be set!!");        tableName = context.getString("tableName");        Preconditions.checkNotNull(tableName, "tableName must be set!!");        user = context.getString("user");        Preconditions.checkNotNull(user, "user must be set!!");        password = context.getString("password");        Preconditions.checkNotNull(password, "password must be set!!");        batchSize = context.getInteger("batchSize", 100);        Preconditions.checkNotNull(batchSize > 0, "batchSize must be a positive number!!");    }     @Override    public void start() {        super.start();        try {            //调用Class.forName()方法加载驱动程序            Class.forName("com.mysql.jdbc.Driver");        } catch (ClassNotFoundException e) {            e.printStackTrace();        }         String url = "jdbc:mysql://" + hostname + ":" + port + "/" + databaseName;         //调用DriverManager对象的getConnection()方法，获得一个Connection对象         try {            conn = DriverManager.getConnection(url, user, password);            conn.setAutoCommit(false);            //创建一个Statement对象            preparedStatement = conn.prepareStatement("insert into " + tableName +                                                " (content) values (?)");         } catch (SQLException e) {            e.printStackTrace();            System.exit(1);        }     }     @Override    public void stop() {        super.stop();        if (preparedStatement != null) {            try {                preparedStatement.close();            } catch (SQLException e) {                e.printStackTrace();            }        }         if (conn != null) {            try {                conn.close();            } catch (SQLException e) {                e.printStackTrace();            }        }    }     public Status process() throws EventDeliveryException {        Status result = Status.READY;        Channel channel = getChannel();        Transaction transaction = channel.getTransaction();        Event event;        String content;         List<String> actions = Lists.newArrayList();        transaction.begin();        try {            for (int i = 0; i < batchSize; i++) {                event = channel.take();                if (event != null) {                    content = new String(event.getBody());                    actions.add(content);                } else {                    result = Status.BACKOFF;                    break;                }            }             if (actions.size() > 0) {                preparedStatement.clearBatch();                for (String temp : actions) {                    preparedStatement.setString(1, temp);                    preparedStatement.addBatch();                }                preparedStatement.executeBatch();                 conn.commit();            }            transaction.commit();        } catch (Throwable e) {            try {                transaction.rollback();            } catch (Exception e2) {                LOG.error("Exception in rollback. Rollback might not have been" +                        "successful.", e2);            }            LOG.error("Failed to commit transaction." +                    "Transaction rolled back.", e);            Throwables.propagate(e);        } finally {            transaction.close();        }         return result;    }}

pom依赖如下：

<?xml version="1.0"?><!--Licensed to the Apache Software Foundation (ASF) under one or morecontributor license agreements.  See the NOTICE file distributed withthis work for additional information regarding copyright ownership.The ASF licenses this file to You under the Apache License, Version 2.0(the "License"); you may not use this file except in compliance withthe License.  You may obtain a copy of the License at      http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, softwaredistributed under the License is distributed on an "AS IS" BASIS,WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.See the License for the specific language governing permissions andlimitations under the License.--><project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">  <modelVersion>4.0.0</modelVersion>  <parent>    <groupId>org.apache.flume</groupId>    <artifactId>flume-parent</artifactId>    <version>1.4.0</version>  </parent>  <groupId>org.apache.flume</groupId>  <artifactId>flume-mysql-sink</artifactId>  <version>1.4.0</version>  <name>flume-mysql-sink</name>  <url>http://maven.apache.org</url>  <properties>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  </properties><dependencies>        <dependency>            <groupId>org.apache.flume</groupId>            <artifactId>flume-ng-core</artifactId>        </dependency>         <dependency>            <groupId>org.apache.flume</groupId>            <artifactId>flume-ng-configuration</artifactId>        </dependency>         <dependency>            <groupId>mysql</groupId>            <artifactId>mysql-connector-java</artifactId>            <version>5.1.25</version>        </dependency>         <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-api</artifactId>        </dependency>         <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-log4j12</artifactId>            <scope>test</scope>        </dependency></dependencies></project>

讲代码打成jar包后，上传到flume安装目录下的lib文件夹中，同时需要上传MySQL的驱动jar包

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给flume添加mysqlSink.conf文件:

agent1.sources = source1

agent1.sinks = mysqlSink

agent1.channels = channel1

 

 

 

# Describe/configure source1

agent1.sources.source1.type = exec

agent1.sources.source1.command = tail -F /home/yong/Work/flum-1.6/tail_log_exec

agent1.sources.source1.channels = channel1

 

 

# Describe mysqlSink

agent1.sinks.mysqlSink.type = org.flume.mysql.sink.MysqlSink

agent1.sinks.mysqlSink.hostname=localhost

agent1.sinks.mysqlSink.port=3306

agent1.sinks.mysqlSink.databaseName=sinktest

agent1.sinks.mysqlSink.tableName=mysqltest

agent1.sinks.mysqlSink.user=root

agent1.sinks.mysqlSink.password=root

agent1.sinks.mysqlSink.channel = channel1

  

# Use a channel which buffers events in memory

agent1.channels.channel1.type = memory

agent1.channels.channel1.capacity = 1000

agent1.channels.channel1.transactionCapactiy = 100

 

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启动flume命令：

/home/yong/Work/flume-1.6/bin/flume-ng agent -c/home/yong/Work/flume-1.6/conf/ -f /home/yong/Work/flume-1.6/conf/mysqlSink.conf -n agent1 -Dflume.root.logger=INFO,console

============================================================================

运行程序时，先在Mysql中创建一个表：

mysql> create table mysqltest(
-> id int(11) NOT NULL AUTO_INCREMENT,
-> content varchar(50000) NOT NULL,
-> PRIMARY KEY (`id`)

-> ) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8; 

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生成数据到目标日志文件中：

for i in {1..1000};do echo "exec tail$i" >> /home/yong/Work/flume-1.6/tail_log_exec;done;

完成后，数据和预想中的一样，写入了数据库中。