EventSerializer.java

/*
 * Copyright (C) 2014 The Calrissian 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.calrissian.flowmix.api.kryo;

import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import org.calrissian.mango.domain.Tuple;
import org.calrissian.mango.domain.event.BaseEvent;
import org.calrissian.mango.domain.event.Event;
import org.calrissian.mango.types.TypeRegistry;

import static org.calrissian.mango.types.LexiTypeEncoders.LEXI_TYPES;

public class EventSerializer extends Serializer<Event> {

    TypeRegistry<String> registry = LEXI_TYPES;

    @Override
    public void write(Kryo kryo, Output output, Event event) {

        try {
            output.writeString(event.getId());
            output.writeLong(event.getTimestamp());
            output.writeInt(event.getTuples().size());
            for(Tuple tupleSet : event.getTuples()) {
                output.writeString(tupleSet.getKey());
                output.writeString(registry.getAlias(tupleSet.getValue()));
                output.writeString(registry.encode(tupleSet.getValue()));
            }

        } catch(Exception e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public Event read(Kryo kryo, Input input, Class<Event> eventClass) {
        String uuid = input.readString();
        long timestamp = input.readLong();

        Event event = new BaseEvent(uuid, timestamp);
        int numTuples = input.readInt();
        for(int i = 0; i < numTuples; i++) {

            String key = input.readString();
            String alias = input.readString();
            String val = input.readString();

            event.put(new Tuple(key, registry.decode(alias, val)));
        }

        return event;

    }
}