gremlin-driver/src/main/java/org/apache/tinkerpop/gremlin/driver/ser/RequestMessageGryoSerializer.java

/*
 * 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.tinkerpop.gremlin.driver.ser;

import org.apache.tinkerpop.gremlin.driver.message.RequestMessage;
import org.apache.tinkerpop.gremlin.structure.io.gryo.kryoshim.InputShim;
import org.apache.tinkerpop.gremlin.structure.io.gryo.kryoshim.KryoShim;
import org.apache.tinkerpop.gremlin.structure.io.gryo.kryoshim.OutputShim;
import org.apache.tinkerpop.gremlin.structure.io.gryo.kryoshim.SerializerShim;

import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

/**
 * @author Stephen Mallette (http://stephen.genoprime.com)
 */
public class RequestMessageGryoSerializer implements SerializerShim<RequestMessage> {
    @Override
    public <O extends OutputShim> void write(final KryoShim<?, O> kryo, final O output, final RequestMessage requestMessage) {
        kryo.writeObject(output, requestMessage.getRequestId());
        output.writeString(requestMessage.getProcessor());
        output.writeString(requestMessage.getOp());
        kryo.writeObject(output, requestMessage.getArgs());
    }

    @Override
    public <I extends InputShim> RequestMessage read(final KryoShim<I, ?> kryo, final I input, final Class<RequestMessage> aClass) {
        final UUID id = kryo.readObject(input, UUID.class);
        final String processor = input.readString();
        final String op = input.readString();

        final RequestMessage.Builder builder = RequestMessage.build(op)
                .overrideRequestId(id)
                .processor(processor);

        final Map<String, Object> args = kryo.readObject(input, HashMap.class);
        args.forEach(builder::addArg);
        return builder.create();
    }
}