flinkcdc2.0 代码实现整库同步
时间: 2023-07-25 16:08:55 浏览: 230
基于FlinkSQLCDC的实时数据同步方案
5星 · 资源好评率100%
Flink CDC 2.0 是一种流式数据同步工具,可以用于将数据库中的数据实时同步到其他数据源中。整库同步是一种将整个数据库的数据同步到其他数据源中的方式,下面是一些实现整库同步的代码示例:
1. 使用 Flink CDC 2.0 进行 MySQL 数据库整库同步的示例代码:
```java
public class MySQLCDCJob {
public static void main(String[] args) throws Exception {
StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
env.setParallelism(1);
Properties props = new Properties();
props.setProperty("connector.property-version", "1");
props.setProperty("connector.type", "mysql-cdc");
props.setProperty("connector.startup-mode", "initial");
props.setProperty("connector.username", "root");
props.setProperty("connector.password", "123456");
props.setProperty("connector.hostname", "localhost");
props.setProperty("connector.port", "3306");
props.setProperty("connector.database", "test");
props.setProperty("connector.table.whitelist", ".*");
props.setProperty("connector.table.ignore-patterns", "^test\\..*");
props.setProperty("format.type", "debezium-json");
DataStream<String> stream = env
.addSource(new FlinkCDCSource.Builder<String>()
.setProperties(props)
.build())
.map(new MapFunction<RowData, String>() {
@Override
public String map(RowData value) throws Exception {
return value.toString();
}
});
stream.print();
env.execute("MySQL CDC Job");
}
}
```
2. 使用 Flink CDC 2.0 进行 PostgreSQL 数据库整库同步的示例代码:
```java
public class PostgresCDCJob {
public static void main(String[] args) throws Exception {
StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
env.setParallelism(1);
Properties props = new Properties();
props.setProperty("connector.property-version", "1");
props.setProperty("connector.type", "postgres-cdc");
props.setProperty("connector.startup-mode", "initial");
props.setProperty("connector.username", "postgres");
props.setProperty("connector.password", "123456");
props.setProperty("connector.hostname", "localhost");
props.setProperty("connector.port", "5432");
props.setProperty("connector.database", "test");
props.setProperty("connector.schema.whitelist", "public");
props.setProperty("connector.table.whitelist", ".*");
props.setProperty("connector.table.ignore-patterns", "^test\\..*");
props.setProperty("format.type", "debezium-json");
DataStream<String> stream = env
.addSource(new FlinkCDCSource.Builder<String>()
.setProperties(props)
.build())
.map(new MapFunction<RowData, String>() {
@Override
public String map(RowData value) throws Exception {
return value.toString();
}
});
stream.print();
env.execute("PostgreSQL CDC Job");
}
}
```
以上代码示例使用 Flink CDC 2.0 的 `FlinkCDCSource` 类和相应的连接器配置来创建了一个流数据源。使用 `map` 函数将数据转换为字符串并打印输出。可以根据实际需求修改连接器配置,实现不同的数据同步功能。
阅读全文