flink-doris-connector/src/test/java/org/apache/doris/flink/DorisSinkExampleRowData.java

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// to you under the Apache License, Version 2.0 (the
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//   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.doris.flink;

import org.apache.doris.flink.cfg.DorisExecutionOptions;
import org.apache.doris.flink.cfg.DorisOptions;
import org.apache.doris.flink.sink.DorisSink;
import org.apache.doris.flink.sink.writer.LoadConstants;
import org.apache.doris.flink.sink.writer.serializer.RowDataSerializer;
import org.apache.flink.api.common.RuntimeExecutionMode;
import org.apache.flink.api.common.functions.FlatMapFunction;
import org.apache.flink.api.common.restartstrategy.RestartStrategies;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.streaming.api.TimeCharacteristic;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.environment.CheckpointConfig;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.table.api.DataTypes;
import org.apache.flink.table.data.GenericRowData;
import org.apache.flink.table.data.RowData;
import org.apache.flink.table.data.StringData;
import org.apache.flink.table.types.DataType;
import org.apache.flink.util.Collector;

import java.util.Properties;
import java.util.UUID;


public class DorisSinkExampleRowData {

    public static void main(String[] args) throws Exception{
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
        env.setStreamTimeCharacteristic(TimeCharacteristic.EventTime);
        env.setRuntimeMode(RuntimeExecutionMode.BATCH);
        env.enableCheckpointing(10000);
        env.setParallelism(1);
        env.getCheckpointConfig().enableExternalizedCheckpoints(CheckpointConfig.ExternalizedCheckpointCleanup.RETAIN_ON_CANCELLATION);
        env.setRestartStrategy(RestartStrategies.fixedDelayRestart(5, Time.milliseconds(30000)));
        DorisSink.Builder<RowData> builder = DorisSink.builder();

        Properties properties = new Properties();
        properties.setProperty("column_separator", ",");
        properties.setProperty("line_delimiter", "\n");
//        properties.setProperty("read_json_by_line", "true");
//        properties.setProperty("format", "json");
        DorisOptions.Builder dorisBuilder = DorisOptions.builder();
        dorisBuilder.setFenodes("127.0.0.1:8030")
                .setTableIdentifier("db.tbl")
                .setUsername("root")
                .setPassword("");
        DorisExecutionOptions.Builder  executionBuilder = DorisExecutionOptions.builder();
        executionBuilder.setLabelPrefix(UUID.randomUUID().toString())
                .setStreamLoadProp(properties);

        //flink rowdata‘s schema
        String[] fields = {"name", "age"};
        DataType[] types = {DataTypes.VARCHAR(256), DataTypes.INT()};

        builder.setDorisExecutionOptions(executionBuilder.build())
                .setSerializer(RowDataSerializer.builder()  //serialize according to rowdata
                        .setType(LoadConstants.CSV) //.setType(LoadConstants.CSV)
                        .setFieldDelimiter(",")
                        .setFieldNames(fields) //.setFieldDelimiter(",")
                        .setFieldType(types).build())
                .setDorisOptions(dorisBuilder.build());

        //mock rowdata source
        DataStream<RowData> source = env.fromElements("")
                .flatMap(new FlatMapFunction<String, RowData>() {
                    @Override
                    public void flatMap(String s, Collector<RowData> out) throws Exception {
                        GenericRowData genericRowData = new GenericRowData(2);
                        genericRowData.setField(0, StringData.fromString("beijing"));
                        genericRowData.setField(1, 123);
                        out.collect(genericRowData);

                        GenericRowData genericRowData2 = new GenericRowData(2);
                        genericRowData2.setField(0, StringData.fromString("shanghai"));
                        genericRowData2.setField(1, 1234);
                        out.collect(genericRowData2);
                    }
                });

        source.sinkTo(builder.build());
        env.execute("doris test");
    }
}