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[demo]add sync full database (apache#11276)
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...oris-demo/flink-demo-v1.1/src/main/java/org/apache/doris/demo/flink/DatabaseFullSync.java
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| // 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.apache.doris.demo.flink; | ||
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| 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 org.apache.doris.flink.cfg.DorisExecutionOptions; | ||
| import org.apache.doris.flink.cfg.DorisOptions; | ||
| import org.apache.doris.flink.cfg.DorisReadOptions; | ||
| import org.apache.doris.flink.sink.DorisSink; | ||
| import org.apache.doris.flink.sink.writer.SimpleStringSerializer; | ||
| import org.apache.flink.api.common.eventtime.WatermarkStrategy; | ||
| 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.ProcessFunction; | ||
| import org.apache.flink.util.Collector; | ||
| import org.apache.flink.util.OutputTag; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import java.util.Properties; | ||
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| /*** | ||
| * | ||
| * Synchronize the full database through flink cdc | ||
| * | ||
| */ | ||
| public class DatabaseFullSync { | ||
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| private static String TABLE_A = "tableA"; | ||
| private static String TABLE_B = "tableB"; | ||
| private static OutputTag<String> tableA = new OutputTag<String>(TABLE_A){}; | ||
| private static OutputTag<String> tableB = new OutputTag<String>(TABLE_B){}; | ||
| private static final Logger log = LoggerFactory.getLogger(DatabaseFullSync.class); | ||
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| public static void main(String[] args) throws Exception { | ||
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| MySqlSource<String> mySqlSource = MySqlSource.<String>builder() | ||
| .hostname("127.0.0.1") | ||
| .port(3306) | ||
| .databaseList("test") // set captured database | ||
| .tableList("test.*") // set captured table | ||
| .username("root") | ||
| .password("password") | ||
| .deserializer(new JsonDebeziumDeserializationSchema()) // converts SourceRecord to JSON String | ||
| .build(); | ||
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| StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); | ||
| env.setParallelism(1); | ||
| // enable checkpoint | ||
| env.enableCheckpointing(10000); | ||
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| DataStreamSource<String> cdcSource = env.fromSource(mySqlSource, WatermarkStrategy.noWatermarks(), "MySQL CDC Source"); | ||
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| SingleOutputStreamOperator<String> process = cdcSource.process(new ProcessFunction<String, String>() { | ||
| @Override | ||
| public void processElement(String row, ProcessFunction<String, String>.Context context, Collector<String> collector) throws Exception { | ||
| JSONObject rowJson = JSON.parseObject(row); | ||
| String op = rowJson.getString("op"); | ||
| JSONObject source = rowJson.getJSONObject("source"); | ||
| String table = source.getString("table"); | ||
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| //only sync insert | ||
| if ("c".equals(op)) { | ||
| String value = rowJson.getJSONObject("after").toJSONString(); | ||
| if (TABLE_A.equals(table)) { | ||
| context.output(tableA, value); | ||
| } else if (TABLE_B.equals(table)) { | ||
| context.output(tableB, value); | ||
| } | ||
| } else { | ||
| log.info("other operation..."); | ||
| } | ||
| } | ||
| }); | ||
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| // | ||
| process.getSideOutput(tableA).sinkTo(buildDorisSink(TABLE_A)); | ||
| process.getSideOutput(tableB).sinkTo(buildDorisSink(TABLE_B)); | ||
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| env.execute("Full Database Sync "); | ||
| } | ||
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| public static DorisSink buildDorisSink(String table){ | ||
| DorisSink.Builder<String> builder = DorisSink.builder(); | ||
| DorisOptions.Builder dorisBuilder = DorisOptions.builder(); | ||
| dorisBuilder.setFenodes("127.0.0.1:8030") | ||
| .setTableIdentifier("test." + table) | ||
| .setUsername("root") | ||
| .setPassword("password"); | ||
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| Properties pro = new Properties(); | ||
| //json data format | ||
| pro.setProperty("format", "json"); | ||
| pro.setProperty("read_json_by_line", "true"); | ||
| DorisExecutionOptions executionOptions = DorisExecutionOptions.builder() | ||
| .setLabelPrefix("label-" + table) //streamload label prefix, | ||
| .setStreamLoadProp(pro).build(); | ||
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| builder.setDorisReadOptions(DorisReadOptions.builder().build()) | ||
| .setDorisExecutionOptions(executionOptions) | ||
| .setSerializer(new SimpleStringSerializer()) //serialize according to string | ||
| .setDorisOptions(dorisBuilder.build()); | ||
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| return builder.build(); | ||
| } | ||
| } |