/*
* Copyright (c) 2013-2017 Cinchapi 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.cinchapi.concourse.server.plugin;
import io.atomix.catalyst.buffer.Buffer;
import io.atomix.catalyst.buffer.HeapBuffer;
import javax.annotation.concurrent.Immutable;
/**
*
*
* @author Jeff Nelson
*/
@Immutable
public abstract class RemoteMessage {
@SuppressWarnings("unchecked")
public static <T extends RemoteMessage> T fromBuffer(Buffer buffer) {
Type type = Type.values()[buffer.readByte()];
T message = null;
if(type == Type.ATTRIBUTE) {
message = (T) new RemoteAttributeExchange();
}
else if(type == Type.REQUEST) {
message = (T) new RemoteMethodRequest();
}
else if(type == Type.RESPONSE) {
message = (T) new RemoteMethodResponse();
}
else if(type == Type.STOP) {
message = (T) new RemoteStopRequest();
}
else {
throw new IllegalArgumentException("Unrecognized "
+ RemoteMessage.class.getSimpleName() + " type");
}
message.deserialize(buffer);
return message;
}
public abstract void deserialize(Buffer buffer);
public final Buffer serialize() {
Buffer buffer = HeapBuffer.allocate();
buffer.writeByte(type().ordinal());
serialize(buffer);
buffer.flip();
return buffer;
}
protected abstract void serialize(Buffer buffer);
public abstract Type type();
enum Type {
ATTRIBUTE, REQUEST, RESPONSE, STOP
}
}