概述：

CDC简介 Change Data Capture

API CDC同步数据代码

package com.yclxiao.flinkcdcdemo.api;import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.ververica.cdc.connectors.mysql.source.MySqlSource;
import com.ververica.cdc.debezium.JsonDebeziumDeserializationSchema;
import com.yclxiao.flinkcdcdemo.util.JdbcUtil;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.time.DateFormatUtils;
import org.apache.flink.api.common.eventtime.WatermarkStrategy;
import org.apache.flink.api.common.functions.FilterFunction;
import org.apache.flink.api.common.functions.FlatMapFunction;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.datastream.DataStreamSource;
import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.sink.RichSinkFunction;
import org.apache.flink.util.Collector;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.TimeZone;/*** league.oc_settle_profit -> cloud.dws_profit_record_hdj* API方式*/
public class Wfg2userApi {private static final Logger LOG = LoggerFactory.getLogger(Wfg2userApi.class);private static String MYSQL_HOST = "192.168.1.12";private static int MYSQL_PORT = 3306;private static String MYSQL_USER = "root";private static String MYSQL_PASSWD = "123456";private static String SYNC_DB = "zentao";private static List<String> SYNC_TABLES = Arrays.asList("zentao.zt_group");public static void main(String[] args) throws Exception {MySqlSource<String> mySqlSource = MySqlSource.<String>builder().hostname(MYSQL_HOST).port(MYSQL_PORT).databaseList(SYNC_DB) // set captured database.tableList(String.join(",", SYNC_TABLES)) // set captured table.username(MYSQL_USER).password(MYSQL_PASSWD).deserializer(new JsonDebeziumDeserializationSchema()) // converts SourceRecord to JSON String.build();StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();env.setParallelism(3);env.enableCheckpointing(5000);DataStreamSource<String> cdcSource = env.fromSource(mySqlSource, WatermarkStrategy.noWatermarks(), "CDC Source" + Wfg2userApi.class.getName());List<String> tableList = getTableList();for (String tbl : tableList) {SingleOutputStreamOperator<String> filterStream = filterTableData(cdcSource, tbl);SingleOutputStreamOperator<String> cleanStream = clean(filterStream);SingleOutputStreamOperator<String> logicStream = logic(cleanStream);logicStream.addSink(new CustomDealDataSink());}env.execute(Wfg2userApi.class.getName());}private static class CustomDealDataSink extends RichSinkFunction<String> {private transient Connection cloudConnection;private transient PreparedStatement cloudPreparedStatement;private String insertSql = "INSERT INTO `zentao_zt_group` (`id`, `project`, `vision`, `name`, `role`, `desc`, `acl`, `developer`) \n" +"      VALUES (?, ?, ?, ?, ?, ?, ?, ?)";private String deleteSql = "delete from zentao_zt_group where id = '%s'";@Overridepublic void open(Configuration parameters) throws Exception {super.open(parameters);// 在这里初始化 JDBC 连接cloudConnection = DriverManager.getConnection("jdbc:mysql://" + MYSQL_HOST + ":3306/wfg", "root", "123456");cloudPreparedStatement = cloudConnection.prepareStatement(insertSql);}@Overridepublic void invoke(String value, Context context) throws Exception {JSONObject dataJson = JSON.parseObject(value);Long id = dataJson.getLong("id");Integer project = dataJson.getInteger("project");String vision = dataJson.getString("vision");String name = dataJson.getString("name");String role = dataJson.getString("role");String desc = dataJson.getString("desc");String acl = dataJson.getString("acl");Integer developer = dataJson.getInteger("developer");cloudPreparedStatement.setLong(1, id);cloudPreparedStatement.setInt(2, project);cloudPreparedStatement.setString(3, vision);cloudPreparedStatement.setString(4, name);cloudPreparedStatement.setString(5, role);cloudPreparedStatement.setString(6, desc);cloudPreparedStatement.setString(7, acl);cloudPreparedStatement.setInt(8, developer);cloudPreparedStatement.execute(String.format(deleteSql, id));cloudPreparedStatement.execute();}@Overridepublic void close() throws Exception {super.close();// 在这里关闭 JDBC 连接cloudPreparedStatement.close();cloudConnection.close();}}/*** 处理逻辑：过滤掉部分数据** @param cleanStream* @return*/private static SingleOutputStreamOperator<String> logic(SingleOutputStreamOperator<String> cleanStream) {return cleanStream.filter(new FilterFunction<String>() {@Overridepublic boolean filter(String data) throws Exception {try {
//                    JSONObject dataJson = JSON.parseObject(data);
//                    String id = dataJson.getString("id");
//                    Integer bizType = dataJson.getInteger("biz_type");
//                    if (StringUtils.isBlank(id) || bizType == null) {
//                        return false;
//                    }// 只处理上岗卡数据
//                    return bizType == 9;return true;} catch (Exception ex) {LOG.warn("filter other format binlog:{}", data);return false;}}});}/*** 清晰数据** @param source* @return*/private static SingleOutputStreamOperator<String> clean(SingleOutputStreamOperator<String> source) {return source.flatMap(new FlatMapFunction<String, String>() {@Overridepublic void flatMap(String row, Collector<String> out) throws Exception {try {LOG.info("============================row:{}", row);JSONObject rowJson = JSON.parseObject(row);String op = rowJson.getString("op");//history,insert,updateif (Arrays.asList("r", "c", "u").contains(op)) {out.collect(rowJson.getJSONObject("after").toJSONString());} else {LOG.info("filter other op:{}", op);}} catch (Exception ex) {LOG.warn("filter other format binlog:{}", row);}}});}/*** 过滤数据** @param source* @param table* @return*/private static SingleOutputStreamOperator<String> filterTableData(DataStreamSource<String> source, String table) {return source.filter(new FilterFunction<String>() {@Overridepublic boolean filter(String row) throws Exception {try {JSONObject rowJson = JSON.parseObject(row);JSONObject source = rowJson.getJSONObject("source");String tbl = source.getString("table");return table.equals(tbl);} catch (Exception ex) {ex.printStackTrace();return false;}}});}private static List<String> getTableList() {List<String> tables = new ArrayList<>();String sql = "SELECT TABLE_SCHEMA,TABLE_NAME FROM information_schema.tables WHERE TABLE_SCHEMA = '" + SYNC_DB + "'";List<JSONObject> tableList = JdbcUtil.executeQuery(MYSQL_HOST, MYSQL_PORT, MYSQL_USER, MYSQL_PASSWD, sql);for (JSONObject jsob : tableList) {String schemaName = jsob.getString("TABLE_SCHEMA");String tblName = jsob.getString("TABLE_NAME");String schemaTbl = schemaName + "." + tblName;if (SYNC_TABLES.contains(schemaTbl)) {tables.add(tblName);}}return tables;}
}