package com.crossoverjie.netty.action.init;

import com.crossoverjie.netty.action.common.protocol.BaseRequestProto;
import com.crossoverjie.netty.action.handle.HeartBeatSimpleHandle;
import io.netty.channel.Channel;
import io.netty.channel.ChannelInitializer;
import io.netty.handler.codec.protobuf.ProtobufDecoder;
import io.netty.handler.codec.protobuf.ProtobufEncoder;
import io.netty.handler.codec.protobuf.ProtobufVarint32FrameDecoder;
import io.netty.handler.codec.protobuf.ProtobufVarint32LengthFieldPrepender;
import io.netty.handler.timeout.IdleStateHandler;

/**
 * Function:
 *
 * @author crossoverJie
 *         Date: 17/05/2018 18:51
 * @since JDK 1.8
 */
public class HeartbeatInitializer extends ChannelInitializer<Channel> {
    @Override
    protected void initChannel(Channel ch) throws Exception {
        ch.pipeline()
                //五秒没有收到消息 将IdleStateHandler 添加到 ChannelPipeline 中
                .addLast(new IdleStateHandler(5, 0, 0))
                //.addLast(new HeartbeatDecoder())

                //字符串解析,换行防拆包
                //.addLast(new LineBasedFrameDecoder(1024))
                //.addLast(new StringDecoder())

                // google Protobuf 编解码
                .addLast(new ProtobufVarint32FrameDecoder())
                .addLast(new ProtobufDecoder(BaseRequestProto.RequestProtocol.getDefaultInstance()))
                .addLast(new ProtobufVarint32LengthFieldPrepender())
                .addLast(new ProtobufEncoder())

                .addLast(new HeartBeatSimpleHandle());
    }
}