com.feingto.iot.client.handler.CustomClientChannelHandler Maven / Gradle / Ivy

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package com.feingto.iot.client.handler;

import com.feingto.iot.common.handler.DefaultSimpleChannelHandler;
import com.feingto.iot.common.model.custom.BaseMessage;
import com.feingto.iot.common.model.custom.HeartMessage;
import com.feingto.iot.common.model.custom.Message;
import com.feingto.iot.common.model.custom.SystemMessage;
import com.feingto.iot.common.model.enums.MessageType;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.timeout.IdleState;
import io.netty.handler.timeout.IdleStateEvent;
import lombok.extern.slf4j.Slf4j;

import java.util.Date;

/**
 * 自定义消息客户端通道处理器
 *
 * @author longfei
 */
@Slf4j
public class CustomClientChannelHandler extends DefaultSimpleChannelHandler {
    @Override
    public void handleMessage(ChannelHandlerContext ctx, BaseMessage msg) {
        byte protocol = msg.protocol();
        if (protocol == MessageType.LOGIN_RESPONSE.getValue()) {
            log.debug(">>> login success");
        } else if (protocol == MessageType.SYSTEM.getValue()) {
            log.debug(">>> subscription: {}", ((SystemMessage) msg).content());
        } else if (protocol == MessageType.MESSAGE_RESPONSE.getValue()) {
            log.debug(">>> message: {}", ((Message) msg).content());
        }
    }

    /**
     * 心跳检测
     */
    @Override
    public void userEventTriggered(ChannelHandlerContext ctx, Object evt) {
        if (evt instanceof IdleStateEvent) {
            IdleStateEvent event = (IdleStateEvent) evt;
            if (event.state() == IdleState.WRITER_IDLE) {
                log.debug(">>> writer idle - [{}]", new Date());
                ctx.writeAndFlush(new HeartMessage());
            }
        }
    }
}