前期准备
需要提前安装mysql并且开启binlog,需要准备kafka和zookeeper环境
示例采用debezium1.9.0版本
Maven配置
<version.debezium>1.9.0.Final</version.debezium>
<dependency>
<groupId>io.debezium</groupId>
<artifactId>debezium-api</artifactId>
<version>${version.debezium}</version>
</dependency>
<dependency>
<groupId>io.debezium</groupId>
<artifactId>debezium-embedded</artifactId>
<version>${version.debezium}</version>
</dependency>
<dependency>
<groupId>io.debezium</groupId>
<artifactId>debezium-connector-mysql</artifactId>
<version>${version.debezium}</version>
</dependency>
Java代码
import io.debezium.engine.ChangeEvent;
import io.debezium.engine.DebeziumEngine;
import io.debezium.engine.format.Json;
import java.io.IOException;
import java.util.Properties;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
public class DebeziumTest {
private static DebeziumEngine<ChangeEvent<String, String>> engine;
public static void main(String[] args) throws Exception {
final Properties props = new Properties();
props.setProperty("name", "dbz-engine");
props.setProperty("connector.class", "io.debezium.connector.mysql.MySqlConnector");
//offset config begin - 使用文件来存储已处理的binlog偏移量
props.setProperty("offset.storage", "org.apache.kafka.connect.storage.FileOffsetBackingStore");
// props.setProperty("offset.storage", "org.apache.kafka.connect.storage.KafkaOffsetBackingStore");
props.setProperty("offset.storage.file.filename", "D:/tmp/dbz/storage/mysql_offsets.dat");
props.setProperty("offset.flush.interval.ms", "0");
//offset config end
props.setProperty("database.server.name", "mysql-connector");
props.setProperty("database.history", "io.debezium.relational.history.FileDatabaseHistory");
props.setProperty("database.history.file.filename", "D:/tmp/dbz/storage/mysql_dbhistory.txt");
props.setProperty("database.server.id", "122110"); //随机设置
props.setProperty("database.hostname", "localhost");
props.setProperty("database.port", "3306");
props.setProperty("database.user", "root");
props.setProperty("database.password", "123456");
props.setProperty("database.include.list", "test");//要捕获的数据库名
props.setProperty("topic.prefix", "mysql-");
// props.setProperty("table.include.list", "inventory.a");//要捕获的数据表
props.setProperty("snapshot.mode", "initial");//全量+增量
props.setProperty("bootstrap.servers", "localhost:9092");
props.setProperty("topic", "test");
// props.setProperty("offset.storage.topic", "log-t");
// props.setProperty("offset.storage.partitions", "1");
// props.setProperty("offset.storage.replication.factor", "1");
// KafkaProducerTest test = new KafkaProducerTest("test1841");
// 使用上述配置创建Debezium引擎，输出样式为Json字符串格式
engine = DebeziumEngine.create(Json.class)
.using(props)
.notifying(record -> {
//test.sendMsg(record.value());
System.out.println(record.value());//输出到控制台
})
.using((success, message, error) -> {
if (error != null) {
error.printStackTrace();
// 报错回调
System.out.println("------------error, message:" + message);
System.out.println( "exception:" + error);
}
closeEngine(engine);
})
.build();
ExecutorService executor = Executors.newSingleThreadExecutor();
executor.execute(engine);
addShutdownHook(engine);
awaitTermination(executor);
System.out.println("------------main finished.");
}
private static void closeEngine(DebeziumEngine<ChangeEvent<String, String>> engine) {
try {
engine.close();
} catch (IOException ignored) {
}
}
private static void addShutdownHook(DebeziumEngine<ChangeEvent<String, String>> engine) {
Runtime.getRuntime().addShutdownHook(new Thread(() -> closeEngine(engine)));
}
private static void awaitTermination(ExecutorService executor) {
if (executor != null) {
try {
executor.shutdown();
while (!executor.awaitTermination(5, TimeUnit.SECONDS)) {
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}
}
运行效果
随意修改一条mysql表中的数据
修改后
代码日志
{"schema":{"type":"struct","fields":[{"type":"struct","fields":[{"type":"int32","optional":false,"field":"id"},{"type":"string","optional":true,"field":"name"},{"type":"int32","optional":true,"field":"age"},{"type":"string","optional":true,"field":"phone"},{"type":"string","optional":true,"field":"address"},{"type":"string","optional":true,"name":"io.debezium.time.ZonedTimestamp","version":1,"field":"create_time"}],"optional":true,"name":"mysql_connector.di_test.t_user.Value","field":"before"},{"type":"struct","fields":[{"type":"int32","optional":false,"field":"id"},{"type":"string","optional":true,"field":"name"},{"type":"int32","optional":true,"field":"age"},{"type":"string","optional":true,"field":"phone"},{"type":"string","optional":true,"field":"address"},{"type":"string","optional":true,"name":"io.debezium.time.ZonedTimestamp","version":1,"field":"create_time"}],"optional":true,"name":"mysql_connector.di_test.t_user.Value","field":"after"},{"type":"struct","fields":[{"type":"string","optional":false,"field":"version"},{"type":"string","optional":false,"field":"connector"},{"type":"string","optional":false,"field":"name"},{"type":"int64","optional":false,"field":"ts_ms"},{"type":"string","optional":true,"name":"io.debezium.data.Enum","version":1,"parameters":{"allowed":"true,last,false,incremental"},"default":"false","field":"snapshot"},{"type":"string","optional":false,"field":"db"},{"type":"string","optional":true,"field":"sequence"},{"type":"string","optional":true,"field":"table"},{"type":"int64","optional":false,"field":"server_id"},{"type":"string","optional":true,"field":"gtid"},{"type":"string","optional":false,"field":"file"},{"type":"int64","optional":false,"field":"pos"},{"type":"int32","optional":false,"field":"row"},{"type":"int64","optional":true,"field":"thread"},{"type":"string","optional":true,"field":"query"}],"optional":false,"name":"io.debezium.connector.mysql.Source","field":"source"},{"type":"string","optional":false,"field":"op"},{"type":"int64","optional":true,"field":"ts_ms"},{"type":"struct","fields":[{"type":"string","optional":false,"field":"id"},{"type":"int64","optional":false,"field":"total_order"},{"type":"int64","optional":false,"field":"data_collection_order"}],"optional":true,"field":"transaction"}],"optional":false,"name":"mysql_connector.di_test.t_user.Envelope"},"payload":{"before":{"id":2,"name":"lisi2","age":19,"phone":"18444444","address":"北京海淀1","create_time":"2023-12-28T06:47:07Z"},"after":{"id":2,"name":"lisi2","age":19,"phone":"18444444","address":"北京海淀","create_time":"2023-12-28T06:47:07Z"},"source":{"version":"1.9.0.Final","connector":"mysql","name":"mysql-connector","ts_ms":1722423711000,"snapshot":"false","db":"di_test","sequence":null,"table":"t_user","server_id":1,"gtid":null,"file":"binlog.000008","pos":3134,"row":0,"thread":17,"query":null},"op":"u","ts_ms":1722423711663,"transaction":null}}