conn.go
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package net
import (
"bufio"
"fmt"
"math"
"net"
"pro2d/src/common"
"pro2d/src/components/logger"
"pro2d/src/utils"
"sync/atomic"
)
type Head struct {
Length int32
Cmd int32
ErrCode int32
PreField int32
}
type Connection struct {
net.Conn
Id int
Server *Server
scanner *bufio.Scanner
writer *bufio.Writer
WBuffer chan []byte
RBuffer chan *MsgPkg
Quit chan *Connection
nextCheckTime int64 //下一次检查的时间
lastHeartCheckTime int64 //最后收消息时间
heartTimeoutCount int //超时次数
}
type MsgPkg struct {
Head *Head
Body []byte
Conn *Connection
}
func NewConn(id int, conn net.Conn, s *Server) *Connection {
return &Connection{
Id: id,
Conn: conn,
Server: s,
scanner: bufio.NewScanner(conn),
writer: bufio.NewWriter(conn),
WBuffer: make(chan []byte),
RBuffer: make(chan *MsgPkg),
Quit: make(chan *Connection),
lastHeartCheckTime: utils.Timex(),
heartTimeoutCount: 0,
}
}
func (c *Connection) write() {
defer c.Quiting()
for msg := range c.WBuffer {
n, err := c.writer.Write(msg)
if err != nil{
logger.Error("write fail err: " + err.Error(), "n: ", n)
return
}
if err := c.writer.Flush(); err != nil {
logger.Error("write Flush fail err: " + err.Error())
return
}
}
}
func (c *Connection) read() {
defer c.Quiting()
c.scanner.Split(ParseMsg)
for c.scanner.Scan() {
req, err := DecodeMsg(c.scanner.Bytes())
if err != nil {
return
}
req.Conn = c
//得到需要处理此条连接的workerID
workerID := c.Id % c.Server.SConf.WorkerPoolSize
//将请求消息发送给任务队列
c.Server.TaskQueue[workerID] <- req
atomic.StoreInt64(&c.lastHeartCheckTime, utils.Timex())
//备注，可以在当前协程处理当条请求(如下, 实现很简单，已经删除)，也可以丢到协程池里处理任务(如上)，还未对比效果。
//c.Server.OnRecv(req)
}
if err := c.scanner.Err(); err != nil {
fmt.Printf("scanner.err: %s\n", err.Error())
c.Quiting()
return
}
}
func (c *Connection) checkHeartBeat(now int64) {
lastHeartCheckTime := atomic.LoadInt64(&c.lastHeartCheckTime)
logger.Debug("checkHeartBeat ID: %d, last: %d, now: %d", c.Id, lastHeartCheckTime, now)
if math.Abs(float64(lastHeartCheckTime - now)) > common.HEART_TIMER_INTERVAL {
c.heartTimeoutCount++
if c.heartTimeoutCount >= common.HEART_TIMEOUT_COUNT_MAX {
c.Quiting()
return
}
logger.Debug("timeout count: %d", c.heartTimeoutCount)
}else {
c.heartTimeoutCount = 0
}
}
func (c *Connection) update() {
nextCheckTime := atomic.LoadInt64(&c.nextCheckTime)
now := utils.Timex()
if now >= nextCheckTime {
c.checkHeartBeat(now)
nextCheckTime = now + common.HEART_TIMER_INTERVAL
atomic.StoreInt64(&c.nextCheckTime, nextCheckTime)
}
}
//
//func (c *Connection) SetLastHeartCheckTime() {
// now := utils.Timex()
// lastHeartCheckTime := atomic.LoadInt64(&c.lastHeartCheckTime)
// if now - lastHeartCheckTime < common.HEART_TIMER_INTERVAL {
// logger.Debug("heart too quick")
// }
// atomic.StoreInt64(&c.lastHeartCheckTime, now)
//}
func (c *Connection) Start() {
go c.write()
go c.read()
//for {
// c.SendMsgByCode(100, 1, nil)
// time.Sleep(2*time.Second)
//}
}
func (c *Connection) Stop() {
close(c.RBuffer)
c.Conn.Close()
}
func (c *Connection) Quiting() {
logger.Debug("ID: %d close", c.Id)
c.Server.OnClose(c)
}
func (c *Connection) SendMsgByCode(errCode int32, cmd int32, data []byte){
h := &Head{
Length: int32(common.HEADLEN + len(data)),
Cmd: cmd,
ErrCode: errCode,
PreField: 0,
}
pkg := &MsgPkg{
Head: h,
Body: data,
}
buf, err := EncodeMsg(pkg)
if err != nil {
logger.Error("SendMsg error: %v", err)
return
}
c.WBuffer <- buf
}