org.kordamp.javatrove.chat04.impl.CommandDecoderImpl.java Source code

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Here is the source code for org.kordamp.javatrove.chat04.impl.CommandDecoderImpl.java

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/*
 * Copyright 2016-2017 Andres Almiray
 *
 * This file is part of Java Trove Examples
 *
 * Java Trove Examples is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Java Trove Examples 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Java Trove Examples. If not, see <http://www.gnu.org/licenses/>.
 */
package org.kordamp.javatrove.chat04.impl;

import com.fasterxml.jackson.databind.ObjectMapper;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;
import org.kordamp.javatrove.chat04.Command;
import org.kordamp.javatrove.chat04.CommandDecoder;

import javax.inject.Inject;
import java.util.List;

/**
 * @author Andres Almiray
 */
public class CommandDecoderImpl extends ByteToMessageDecoder implements CommandDecoder {
    @Inject
    private ObjectMapper objectMapper;

    @Override
    protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
        byte[] bytes = new byte[in.readableBytes()];
        in.readBytes(bytes);
        out.add(objectMapper.readValue(bytes, Command.class));
    }
}