socketServer.codec.ChargeStationMessageDecoder.java Source code

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Here is the source code for socketServer.codec.ChargeStationMessageDecoder.java

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/*
 * Copyright 2013-2018 Lilinfeng.
 *  
 * 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 socketServer.codec;

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

import java.io.IOException;

/**
 * @author zhangge
 * @version 0.1
 * @date 2016615
 */
public class ChargeStationMessageDecoder extends LengthFieldBasedFrameDecoder {

    public ChargeStationMessageDecoder(int maxFrameLength, int lengthFieldOffset, int lengthFieldLength,
            int lengthAdjustment, int initalBytesToStrip) throws IOException {
        super(maxFrameLength, lengthFieldOffset, lengthFieldLength, lengthAdjustment, initalBytesToStrip);
    }

    @Override
    protected Object decode(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
        ByteBuf frame = (ByteBuf) super.decode(ctx, in);
        if (frame == null) {
            return null;
        }

        byte[] bytes = new byte[frame.readableBytes()];
        frame.readBytes(bytes);
        return null;
    }
}