/*
* 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.flume.sink.hdfs;
import java.util.Collections;
import org.apache.flume.Context;
import org.apache.flume.Event;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.LongWritable;
public class HDFSTextSerializer implements SequenceFileSerializer {
private Text makeText(Event e) {
Text textObject = new Text();
textObject.set(e.getBody(), 0, e.getBody().length);
return textObject;
}
@Override
public Class<LongWritable> getKeyClass() {
return LongWritable.class;
}
@Override
public Class<Text> getValueClass() {
return Text.class;
}
@Override
public Iterable<Record> serialize(Event e) {
Object key = getKey(e);
Object value = getValue(e);
return Collections.singletonList(new Record(key, value));
}
private Object getKey(Event e) {
// Write the data to HDFS
String timestamp = e.getHeaders().get("timestamp");
long eventStamp;
if (timestamp == null) {
eventStamp = System.currentTimeMillis();
} else {
eventStamp = Long.valueOf(timestamp);
}
return new LongWritable(eventStamp);
}
private Object getValue(Event e) {
return makeText(e);
}
public static class Builder implements SequenceFileSerializer.Builder {
@Override
public SequenceFileSerializer build(Context context) {
return new HDFSTextSerializer();
}
}
}