inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/hive/src/main/java/org/apache/inlong/sort/hive/filesystem/InLongHadoopPathBasedBulkWriter.java

/*
 * 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.inlong.sort.hive.filesystem;

import org.apache.flink.formats.hadoop.bulk.HadoopPathBasedBulkWriter;
import org.apache.flink.table.data.RowData;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.ql.exec.FileSinkOperator;
import org.apache.hadoop.hive.ql.exec.FileSinkOperator.RecordWriter;
import org.apache.hadoop.io.Writable;

import java.io.IOException;
import java.util.function.Function;

public class InLongHadoopPathBasedBulkWriter implements HadoopPathBasedBulkWriter<RowData> {

    private FileSinkOperator.RecordWriter recordWriter;
    private Function<RowData, Writable> rowConverter;
    private FileSystem fs;
    private Path inProgressPath;

    public InLongHadoopPathBasedBulkWriter(FileSinkOperator.RecordWriter recordWriter,
            Function<RowData, Writable> rowConverter,
            FileSystem fs,
            Path inProgressPath) {
        this.recordWriter = recordWriter;
        this.rowConverter = rowConverter;
        this.fs = fs;
        this.inProgressPath = inProgressPath;
    }

    public void setRecordWriter(RecordWriter recordWriter) {
        this.recordWriter = recordWriter;
    }

    public void setInProgressPath(Path inProgressPath) throws IOException {
        this.inProgressPath = inProgressPath;
        if (this.fs.getScheme().equals("file")) {
            // update fs with hdfs scheme
            this.fs = FileSystem.get(inProgressPath.toUri(), fs.getConf());
        }
    }

    public void setRowConverter(Function<RowData, Writable> rowConverter) {
        this.rowConverter = rowConverter;
    }

    @Override
    public long getSize() throws IOException {
        // it's possible the in-progress file hasn't yet been created, due to writer lazy
        // init or data buffering
        return fs.exists(inProgressPath) ? fs.getFileStatus(inProgressPath).getLen() : 0;
    }

    @Override
    public void dispose() {
        // close silently.
        try {
            recordWriter.close(true);
        } catch (IOException ignored) {
        }
    }

    @Override
    public void addElement(RowData element) throws IOException {
        recordWriter.write(rowConverter.apply(element));
    }

    @Override
    public void flush() {
    }

    @Override
    public void finish() throws IOException {
        recordWriter.close(false);
    }
}