CIMServerHandle.java
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package com.crossoverjie.cim.server.handle;
import com.alibaba.fastjson.JSONObject;
import com.crossoverjie.cim.common.constant.Constants;
import com.crossoverjie.cim.common.exception.CIMException;
import com.crossoverjie.cim.common.kit.HeartBeatHandler;
import com.crossoverjie.cim.common.pojo.CIMUserInfo;
import com.crossoverjie.cim.common.protocol.CIMRequestProto;
import com.crossoverjie.cim.common.util.NettyAttrUtil;
import com.crossoverjie.cim.server.config.AppConfiguration;
import com.crossoverjie.cim.server.kit.ServerHeartBeatHandlerImpl;
import com.crossoverjie.cim.server.util.SessionSocketHolder;
import com.crossoverjie.cim.server.util.SpringBeanFactory;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.timeout.IdleState;
import io.netty.handler.timeout.IdleStateEvent;
import okhttp3.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
/**
* Function:
*
* @author crossoverJie
* Date: 17/05/2018 18:52
* @since JDK 1.8
*/
@ChannelHandler.Sharable
public class CIMServerHandle extends SimpleChannelInboundHandler<CIMRequestProto.CIMReqProtocol> {
private final static Logger LOGGER = LoggerFactory.getLogger(CIMServerHandle.class);
private final MediaType mediaType = MediaType.parse("application/json");
/**
* 取消绑定
*
* @param ctx
* @throws Exception
*/
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
//可能出现业务判断离线后再次触发 channelInactive
CIMUserInfo userInfo = SessionSocketHolder.getUserId((NioSocketChannel) ctx.channel());
if (userInfo != null){
LOGGER.warn("[{}] trigger channelInactive offline!",userInfo.getUserName());
userOffLine(userInfo, (NioSocketChannel) ctx.channel());
ctx.channel().close();
}
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
if (evt instanceof IdleStateEvent) {
IdleStateEvent idleStateEvent = (IdleStateEvent) evt;
if (idleStateEvent.state() == IdleState.READER_IDLE) {
LOGGER.info("定时检测客户端端是否存活");
HeartBeatHandler heartBeatHandler = SpringBeanFactory.getBean(ServerHeartBeatHandlerImpl.class) ;
heartBeatHandler.process(ctx) ;
}
}
super.userEventTriggered(ctx, evt);
}
/**
* 用户下线
* @param userInfo
* @param channel
* @throws IOException
*/
private void userOffLine(CIMUserInfo userInfo, NioSocketChannel channel) throws IOException {
LOGGER.info("account [{}] offline!", userInfo.getUserName());
SessionSocketHolder.remove(channel);
SessionSocketHolder.removeSession(userInfo.getUserId());
//清除路由关系
clearRouteInfo(userInfo);
}
/**
* 下线，清除路由关系
*
* @param userInfo
* @throws IOException
*/
private void clearRouteInfo(CIMUserInfo userInfo) throws IOException {
OkHttpClient okHttpClient = SpringBeanFactory.getBean(OkHttpClient.class);
AppConfiguration configuration = SpringBeanFactory.getBean(AppConfiguration.class);
JSONObject jsonObject = new JSONObject();
jsonObject.put("userId", userInfo.getUserId());
jsonObject.put("msg", "offLine");
RequestBody requestBody = RequestBody.create(mediaType, jsonObject.toString());
Request request = new Request.Builder()
.url(configuration.getClearRouteUrl())
.post(requestBody)
.build();
Response response = null;
try {
response = okHttpClient.newCall(request).execute();
if (!response.isSuccessful()) {
throw new IOException("Unexpected code " + response);
}
} finally {
response.body().close();
}
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, CIMRequestProto.CIMReqProtocol msg) throws Exception {
LOGGER.info("received msg=[{}]", msg.toString());
if (msg.getType() == Constants.CommandType.LOGIN) {
//保存客户端与 Channel 之间的关系
SessionSocketHolder.put(msg.getRequestId(), (NioSocketChannel) ctx.channel());
SessionSocketHolder.saveSession(msg.getRequestId(), msg.getReqMsg());
LOGGER.info("client [{}] online success!!", msg.getReqMsg());
}
//心跳更新时间
if (msg.getType() == Constants.CommandType.PING){
NettyAttrUtil.updateReaderTime(ctx.channel(),System.currentTimeMillis());
//向客户端响应 pong 消息
CIMRequestProto.CIMReqProtocol heartBeat = SpringBeanFactory.getBean("heartBeat",
CIMRequestProto.CIMReqProtocol.class);
ctx.writeAndFlush(heartBeat).addListeners((ChannelFutureListener) future -> {
if (!future.isSuccess()) {
LOGGER.error("IO error,close Channel");
future.channel().close();
}
}) ;
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
if (CIMException.isResetByPeer(cause.getMessage())) {
return;
}
LOGGER.error(cause.getMessage(), cause);
}
}