flink-doris-connector/src/main/java/org/apache/doris/flink/table/DorisDynamicTableSink.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.table;

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.rest.RestService;
import org.apache.doris.flink.sink.DorisSink;
import org.apache.doris.flink.sink.writer.RowDataSerializer;

import org.apache.flink.table.api.TableSchema;
import org.apache.flink.table.connector.ChangelogMode;
import org.apache.flink.table.connector.sink.DynamicTableSink;
import org.apache.flink.table.connector.sink.SinkProvider;
import org.apache.flink.table.data.RowData;
import org.apache.flink.types.RowKind;
import org.apache.flink.util.Preconditions;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Arrays;
import java.util.Properties;
import java.util.stream.Collectors;

import static org.apache.doris.flink.sink.writer.LoadConstants.COLUMNS_KEY;
import static org.apache.doris.flink.sink.writer.LoadConstants.CSV;
import static org.apache.doris.flink.sink.writer.LoadConstants.DORIS_DELETE_SIGN;
import static org.apache.doris.flink.sink.writer.LoadConstants.FIELD_DELIMITER_DEFAULT;
import static org.apache.doris.flink.sink.writer.LoadConstants.FIELD_DELIMITER_KEY;
import static org.apache.doris.flink.sink.writer.LoadConstants.FORMAT_KEY;

/**
 * DorisDynamicTableSink
 **/
public class DorisDynamicTableSink implements DynamicTableSink {
    private static final Logger LOG = LoggerFactory.getLogger(DorisDynamicTableSink.class);
    private final DorisOptions options;
    private final DorisReadOptions readOptions;
    private final DorisExecutionOptions executionOptions;
    private final TableSchema tableSchema;
    private final Integer sinkParallelism;

    public DorisDynamicTableSink(DorisOptions options,
                                 DorisReadOptions readOptions,
                                 DorisExecutionOptions executionOptions,
                                 TableSchema tableSchema,
                                 Integer sinkParallelism) {
        this.options = options;
        this.readOptions = readOptions;
        this.executionOptions = executionOptions;
        this.tableSchema = tableSchema;
        this.sinkParallelism = sinkParallelism;
    }

    @Override
    public ChangelogMode getChangelogMode(ChangelogMode changelogMode) {
        return ChangelogMode.newBuilder()
                .addContainedKind(RowKind.INSERT)
                .addContainedKind(RowKind.DELETE)
                .addContainedKind(RowKind.UPDATE_AFTER)
                .build();
    }

    @Override
    public SinkRuntimeProvider getSinkRuntimeProvider(Context context) {
        Properties loadProperties = executionOptions.getStreamLoadProp();
        boolean deletable = RestService.isUniqueKeyType(options, readOptions, LOG) && executionOptions.getDeletable();
        if (!loadProperties.containsKey(COLUMNS_KEY)) {
            String[] fieldNames = tableSchema.getFieldNames();
            Preconditions.checkState(fieldNames != null && fieldNames.length > 0);
            String columns = String.join(",", Arrays.stream(fieldNames).map(item -> String.format("`%s`", item.trim().replace("`", ""))).collect(Collectors.toList()));
            if (deletable) {
                columns = String.format("%s,%s", columns, DORIS_DELETE_SIGN);
            }
            loadProperties.put(COLUMNS_KEY, columns);
        }

        RowDataSerializer.Builder serializerBuilder = RowDataSerializer.builder();
        serializerBuilder.setFieldNames(tableSchema.getFieldNames())
                .setFieldType(tableSchema.getFieldDataTypes())
                .setType(loadProperties.getProperty(FORMAT_KEY, CSV))
                .enableDelete(deletable)
                .setFieldDelimiter(loadProperties.getProperty(FIELD_DELIMITER_KEY, FIELD_DELIMITER_DEFAULT));
        DorisSink.Builder<RowData> dorisSinkBuilder = DorisSink.builder();
        dorisSinkBuilder.setDorisOptions(options)
                .setDorisReadOptions(readOptions)
                .setDorisExecutionOptions(executionOptions)
                .setSerializer(serializerBuilder.build());
        return SinkProvider.of(dorisSinkBuilder.build(), sinkParallelism);
    }

    @Override
    public DynamicTableSink copy() {
        return new DorisDynamicTableSink(options, readOptions, executionOptions, tableSchema, sinkParallelism);
    }

    @Override
    public String asSummaryString() {
        return "Doris Table Sink";
    }
}