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.pojo.CIMUserInfo;
import com.crossoverjie.cim.common.protocol.CIMRequestProto;
import com.crossoverjie.cim.server.config.AppConfiguration;
import com.crossoverjie.cim.server.util.SessionSocketHolder;
import com.crossoverjie.cim.server.util.SpringBeanFactory;
import io.netty.channel.*;
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 {
CIMUserInfo userInfo = SessionSocketHolder.getUserId((NioSocketChannel) ctx.channel());
userOffLine(userInfo, (NioSocketChannel) ctx.channel());
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
if (evt instanceof IdleStateEvent) {
IdleStateEvent idleStateEvent = (IdleStateEvent) evt;
if (idleStateEvent.state() == IdleState.READER_IDLE) {
//向客户端发送消息
CIMRequestProto.CIMReqProtocol heartBeat = SpringBeanFactory.getBean("heartBeat",
CIMRequestProto.CIMReqProtocol.class);
ctx.writeAndFlush(heartBeat).addListeners(new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
//下线客户端
CIMUserInfo userInfo = SessionSocketHolder.getUserId((NioSocketChannel) future.channel());
if (!future.isSuccess()) {
LOGGER.info("向客户端[{}]下发心跳失败",userInfo.getUserName());
userOffLine(userInfo, (NioSocketChannel) future.channel());
future.channel().close();
}else {
LOGGER.info("向客户端[{}]下发心跳成功",userInfo.getUserName());
}
}
});
}
}
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("用户[{}]下线", userInfo.getUserName());
SessionSocketHolder.remove(channel);
SessionSocketHolder.removeSession(userInfo.getUserId());
//清除路由关系
clearRouteInfo(userInfo);
}
/**
* 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("收到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("客户端[{}]上线成功", msg.getReqMsg());
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
if (CIMException.isResetByPeer(cause.getMessage())) {
return;
}
LOGGER.error(cause.getMessage(), cause);
}
}