JAVA整合FlinkCDC
2021/12/20 20:22:13
本文主要是介绍JAVA整合FlinkCDC,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
官方地址:https://github.com/ververica/flink-cdc-connectors
版本至少jdk8
maven
<dependency> <groupId>com.ververica</groupId> <!-- add the dependency matching your database --> <artifactId>flink-connector-mysql-cdc</artifactId> <!-- the dependency is available only for stable releases. --> <version>2.2-SNAPSHOT</version> </dependency>
java代码
import org.apache.flink.api.common.eventtime.WatermarkStrategy; import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; import com.ververica.cdc.debezium.JsonDebeziumDeserializationSchema; import com.ververica.cdc.connectors.mysql.source.MySqlSource; public class MySqlSourceExample { public static void main(String[] args) throws Exception { MySqlSource<String> mySqlSource = MySqlSource.<String>builder() .hostname("yourHostname") .port(yourPort) .databaseList("yourDatabaseName") // set captured database .tableList("yourDatabaseName.yourTableName") // set captured table .username("yourUsername") .password("yourPassword") .deserializer(new JsonDebeziumDeserializationSchema()) // converts SourceRecord to JSON String .build(); StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); // enable checkpoint env.enableCheckpointing(3000); env .fromSource(mySqlSource, WatermarkStrategy.noWatermarks(), "MySQL Source") // set 4 parallel source tasks .setParallelism(4) .print().setParallelism(1); // use parallelism 1 for sink to keep message ordering env.execute("Print MySQL Snapshot + Binlog"); } }
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