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/*
 *    Copyright (c) [2021] [Peking University]
 *    [BDWare DOIP SDK] is licensed under Mulan PSL v2.
 *    You can use this software according to the terms and conditions of the Mulan PSL v2.
 *    You may obtain a copy of Mulan PSL v2 at:
 *             http://license.coscl.org.cn/MulanPSL2
 *    THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 *    See the Mulan PSL v2 for more details.
 */

package org.bdware.dogp.codec;

import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToMessageCodec;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import java.util.List;

public class DOGPOpChanger extends MessageToMessageCodec {
    static Logger LOGGER = LogManager.getLogger(DOGPOpChanger.class);
    byte changedOp;
    public DOGPOpChanger(byte op){
        changedOp = op;
    }
    @Override
    protected void encode(ChannelHandlerContext ctx, DOGPMessage msg, List out) throws Exception {
        LOGGER.info("[DOGPSEND] " + msg.prettyPrint());
        msg.opcode = changedOp;
        out.add(msg);
    }

    @Override
    protected void decode(ChannelHandlerContext ctx, DOGPMessage msg, List out) throws Exception {
        LOGGER.info("[DOGPRECV] " + msg.prettyPrint());
        out.add(msg);
    }
}