/*
* Copyright 2013 the original author or authors.
*
* 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 org.springframework.xd.dirt.integration.bus.serializer.kryo;
import org.springframework.beans.DirectFieldAccessor;
import org.springframework.xd.tuple.DefaultTuple;
import org.springframework.xd.tuple.DefaultTupleConversionService;
import org.springframework.xd.tuple.Tuple;
import org.springframework.xd.tuple.TupleToJsonStringConverter;
import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import com.esotericsoftware.shaded.org.objenesis.strategy.StdInstantiatorStrategy;
/**
* Kryo serializer for {@link Tuple}
*
* @author David Turanski
* @since 1.0
*/
public class TupleCodec extends AbstractKryoCodec<Tuple> {
@Override
protected void doSerialize(Tuple object, Kryo kryo, Output output) {
kryo.writeObject(output, object);
}
@Override
protected Tuple doDeserialize(Kryo kryo, Input input) {
DefaultTuple tuple = kryo.readObject(input, DefaultTuple.class);
restoreConversionService(tuple);
return tuple;
}
/**
* @param tuple
*/
private void restoreConversionService(DefaultTuple tuple) {
setConversionService(tuple, new DefaultTupleConversionService(), new TupleToJsonStringConverter());
for (Object value : tuple.getValues()) {
if (value instanceof DefaultTuple) {
restoreConversionService((DefaultTuple) value);
}
}
}
/**
* @param defaultTupleConversionService
* @param tupleToJsonStringConverter
*/
private void setConversionService(DefaultTuple tuple, DefaultTupleConversionService defaultTupleConversionService,
TupleToJsonStringConverter tupleToJsonStringConverter) {
DirectFieldAccessor dfa = new DirectFieldAccessor(tuple);
dfa.setPropertyValue("formattingConversionService", defaultTupleConversionService);
dfa.setPropertyValue("tupleToStringConverter", tupleToJsonStringConverter);
}
@Override
protected Kryo getKryoInstance() {
Kryo kryo = new Kryo();
kryo.setInstantiatorStrategy(new StdInstantiatorStrategy());
kryo.register(DefaultTuple.class);
return kryo;
}
}