/*
Copyright 2013 Twitter, 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.twitter.chill.thrift;
import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import org.apache.thrift.TBase;
import org.apache.thrift.TDeserializer;
import org.apache.thrift.TException;
import org.apache.thrift.TSerializer;
/**
* Kryo serializer for Thrift instances.
*
* Note that this class is not thread-safe. (Kryo itself is not thread
* safe, so this shouldn't be a concern.)
*
* Use this with
* addDefaultSerializer(TBase.class, TBaseSerializer.class)
* It still helps to .register your instances so the full class name
* does not need to be written.
*/
public class TBaseSerializer extends Serializer<TBase> {
private final TSerializer serializer = new TSerializer();
private final TDeserializer deserializer = new TDeserializer();
@Override
public void write(Kryo kryo, Output output, TBase tBase) {
try {
byte[] serThrift = serializer.serialize(tBase);
output.writeInt(serThrift.length, true);
output.writeBytes(serThrift);
} catch (TException e) {
throw new RuntimeException(e);
}
}
@Override
public TBase read(Kryo kryo, Input input, Class<TBase> tBaseClass) {
try {
TBase prototype = tBaseClass.newInstance();
int tSize = input.readInt(true);
byte[] barr = new byte[tSize];
input.readBytes(barr);
deserializer.deserialize(prototype, barr);
return prototype;
} catch (Exception e) {
throw new RuntimeException("Could not create " + tBaseClass, e);
}
}
}