seatunnel-connectors-v2/connector-hive/src/main/java/org/apache/seatunnel/connectors/seatunnel/hive/source/HiveSource.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.seatunnel.connectors.seatunnel.hive.source;

import static org.apache.seatunnel.connectors.seatunnel.hive.config.HiveConfig.ORC_INPUT_FORMAT_CLASSNAME;
import static org.apache.seatunnel.connectors.seatunnel.hive.config.HiveConfig.PARQUET_INPUT_FORMAT_CLASSNAME;
import static org.apache.seatunnel.connectors.seatunnel.hive.config.HiveConfig.TEXT_INPUT_FORMAT_CLASSNAME;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.FS_DEFAULT_NAME_KEY;

import org.apache.seatunnel.api.common.PrepareFailException;
import org.apache.seatunnel.api.source.SeaTunnelSource;
import org.apache.seatunnel.common.config.CheckConfigUtil;
import org.apache.seatunnel.common.config.CheckResult;
import org.apache.seatunnel.common.constants.PluginType;
import org.apache.seatunnel.connectors.seatunnel.file.config.BaseSourceConfig;
import org.apache.seatunnel.connectors.seatunnel.file.config.FileFormat;
import org.apache.seatunnel.connectors.seatunnel.file.hdfs.source.BaseHdfsFileSource;
import org.apache.seatunnel.connectors.seatunnel.hive.config.HiveConfig;

import org.apache.seatunnel.shade.com.typesafe.config.Config;
import org.apache.seatunnel.shade.com.typesafe.config.ConfigValueFactory;

import com.google.auto.service.AutoService;
import org.apache.commons.lang3.tuple.Pair;
import org.apache.hadoop.hive.metastore.api.Table;

import java.net.URI;
import java.net.URISyntaxException;

@AutoService(SeaTunnelSource.class)
public class HiveSource extends BaseHdfsFileSource {
    private Table tableInformation;

    @Override
    public String getPluginName() {
        return "Hive";
    }

    @Override
    public void prepare(Config pluginConfig) throws PrepareFailException {
        CheckResult result = CheckConfigUtil.checkAllExists(pluginConfig, HiveConfig.METASTORE_URI, HiveConfig.TABLE_NAME);
        if (!result.isSuccess()) {
            throw new PrepareFailException(getPluginName(), PluginType.SOURCE, result.getMsg());
        }
        Pair<String[], Table> tableInfo = HiveConfig.getTableInfo(pluginConfig);
        tableInformation = tableInfo.getRight();
        String inputFormat = tableInformation.getSd().getInputFormat();
        if (TEXT_INPUT_FORMAT_CLASSNAME.equals(inputFormat)) {
            pluginConfig = pluginConfig.withValue(BaseSourceConfig.FILE_TYPE, ConfigValueFactory.fromAnyRef(FileFormat.TEXT.toString()));
        } else if (PARQUET_INPUT_FORMAT_CLASSNAME.equals(inputFormat)) {
            pluginConfig = pluginConfig.withValue(BaseSourceConfig.FILE_TYPE, ConfigValueFactory.fromAnyRef(FileFormat.PARQUET.toString()));
        } else if (ORC_INPUT_FORMAT_CLASSNAME.equals(inputFormat)) {
            pluginConfig = pluginConfig.withValue(BaseSourceConfig.FILE_TYPE, ConfigValueFactory.fromAnyRef(FileFormat.ORC.toString()));
        } else {
            throw new RuntimeException("Only support [text parquet orc] file now");
        }
        String hdfsLocation = tableInformation.getSd().getLocation();
        try {
            URI uri = new URI(hdfsLocation);
            String path = uri.getPath();
            String defaultFs = hdfsLocation.replace(path, "");
            pluginConfig = pluginConfig.withValue(BaseSourceConfig.FILE_PATH, ConfigValueFactory.fromAnyRef(path))
                .withValue(FS_DEFAULT_NAME_KEY, ConfigValueFactory.fromAnyRef(defaultFs));
        } catch (URISyntaxException e) {
            throw new RuntimeException("Get hdfs cluster address failed, please check.", e);
        }
        super.prepare(pluginConfig);
    }
}