/*
* 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 gobblin.source.extractor.hadoop;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.RecordReader;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.input.FileSplit;
import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
import org.apache.hadoop.util.ReflectionUtils;
import gobblin.configuration.State;
import gobblin.configuration.WorkUnitState;
/**
* An extension to {@link HadoopFileInputSource} that uses a {@link TextInputFormat}.
*
* <p>
* A concrete implementation of this class should at least implement the
* {@link #getExtractor(WorkUnitState, RecordReader, FileSplit, boolean)} method.
* </p>
*
* @param <S> output schema type
*
* @author Yinan Li
*/
public abstract class HadoopTextInputSource<S> extends HadoopFileInputSource<S, Text, LongWritable, Text> {
@Override
protected FileInputFormat<LongWritable, Text> getFileInputFormat(State state, Configuration configuration) {
return ReflectionUtils.newInstance(TextInputFormat.class, configuration);
}
}