org.msgpack.rpc.loop.netty.MessagePackDecoder.java Source code

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Here is the source code for org.msgpack.rpc.loop.netty.MessagePackDecoder.java

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//
// MessagePack-RPC for Java
//
// Copyright (C) 2010 FURUHASHI Sadayuki
//
//    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.
//
/*
* Copyright (C) 2014-2015 Information Analysis Laboratory, NICT
*
* RaSC is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 of the License, or (at
* your option) any later version.
*
* RaSC is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/

package org.msgpack.rpc.loop.netty;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;

import java.nio.ByteBuffer;
import java.util.List;

import org.msgpack.MessagePack;
import org.msgpack.type.Value;

public class MessagePackDecoder extends ByteToMessageDecoder {

    MessagePack messagePack;

    public MessagePackDecoder(MessagePack messagePack) {
        super();
        this.messagePack = messagePack;
    }

    @Override
    protected void decode(ChannelHandlerContext ctx, ByteBuf msg, List<Object> result) throws Exception {
        // TODO ???

        ByteBuffer buffer = msg.nioBuffer();
        if (!buffer.hasRemaining()) {
            return;
        }

        byte[] bytes = buffer.array(); // FIXME buffer must has array
        int offset = buffer.arrayOffset() + buffer.position();
        int length = buffer.arrayOffset() + buffer.limit();

        Value v = messagePack.read(bytes, offset, length);
        result.add(v);
    }
}