/*
 * Copyright (c) 2011-2020 Progress Software Corporation and/or its subsidiaries or affiliates. All Rights Reserved.
 *
 * Licensed 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 com.marklogic.contentpump;

import java.io.IOException;

import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.RecordReader;
import org.apache.hadoop.mapreduce.TaskAttemptContext;

import com.marklogic.mapreduce.CompressionCodec;
import com.marklogic.mapreduce.DocumentURIWithSourceInfo;

/**
 * InputFormat for compressed delimited json.
 * @author mattsun
 *
 */
public class CompressedDelimitedJSONInputFormat extends
        FileAndDirectoryInputFormat<DocumentURIWithSourceInfo, Text> {

    @Override
    public RecordReader<DocumentURIWithSourceInfo, Text> createRecordReader(InputSplit split,
            TaskAttemptContext context) throws IOException,
            InterruptedException {
        String codec = context.getConfiguration().get(
                ConfigConstants.CONF_INPUT_COMPRESSION_CODEC, 
                CompressionCodec.ZIP.toString()); 
        if (codec.equalsIgnoreCase(CompressionCodec.ZIP.toString())) {
            return new ZipDelimitedJSONReader();
        } else if (codec.equalsIgnoreCase(CompressionCodec.GZIP.toString())) {
            return new GzipDelimitedJSONReader();
        } else {
            throw new UnsupportedOperationException("Unsupported codec: "
                    + codec);
        }
    }

    @Override
    protected boolean isSplitable(JobContext context, Path filename) {
        return false;
    }
    
}
