/**
* Copyright 2013 Netflix, Inc.
*
* 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.netflix.aegisthus.input.readers;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.zip.GZIPInputStream;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import com.netflix.aegisthus.input.AegSplit;
public class JsonRecordReader extends AegisthusRecordReader {
protected BufferedReader reader;
@Override
public void close() throws IOException {
if (reader != null) {
reader.close();
}
}
@Override
public void initialize(InputSplit inputSplit, TaskAttemptContext ctx) throws IOException, InterruptedException {
AegSplit split = (AegSplit) inputSplit;
InputStream is = split.getInput(ctx.getConfiguration());
start = split.getStart();
end = split.getEnd();
pos = start;
is.skip(split.getStart());
if (split.getPath().getName().endsWith(".gz")) {
reader = new BufferedReader(new InputStreamReader(new GZIPInputStream(is)));
} else {
reader = new BufferedReader(new InputStreamReader(is));
}
}
@Override
public boolean nextKeyValue() throws IOException, InterruptedException {
String line = reader.readLine();
if (line == null) {
return false;
}
pos += line.length();
String[] text = line.split("\t", 2);
key.set(text[0]);
value.set(text[1]);
return true;
}
}