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hucan
2025-02-06 11:14:33 +08:00
commit 07847a2d9e
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services/excservice/websocket.go Normal file
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package excservice
import (
"errors"
"fmt"
"net/http"
"net/http/httputil"
"net/url"
"sync"
"time"
"go.uber.org/zap"
"go-admin/pkg/utility"
"github.com/bytedance/sonic"
log "github.com/go-admin-team/go-admin-core/logger"
"github.com/gorilla/websocket"
)
type WsConfig struct {
WsUrl string
ProxyUrl string
ReqHeaders map[string][]string //连接的时候加入的头部信息
HeartbeatIntervalTime time.Duration //
HeartbeatData func() []byte //心跳数据2
IsAutoReconnect bool
ProtoHandleFunc func([]byte) error //协议处理函数
DecompressFunc func([]byte) ([]byte, error) //解压函数
ErrorHandleFunc func(err error)
ConnectSuccessAfterSendMessage func() []byte //for reconnect
IsDump bool
readDeadLineTime time.Duration
reconnectInterval time.Duration
}
var dialer = &websocket.Dialer{
Proxy: http.ProxyFromEnvironment,
HandshakeTimeout: 30 * time.Second,
EnableCompression: true,
}
type WsConn struct {
c *websocket.Conn
WsConfig
writeBufferChan chan []byte
pingMessageBufferChan chan []byte
pongMessageBufferChan chan []byte
closeMessageBufferChan chan []byte
subs [][]byte
close chan bool
reConnectLock *sync.Mutex
}
type WsBuilder struct {
wsConfig *WsConfig
}
func NewWsBuilder() *WsBuilder {
return &WsBuilder{&WsConfig{
ReqHeaders: make(map[string][]string, 1),
reconnectInterval: time.Second * 10,
}}
}
func (b *WsBuilder) WsUrl(wsUrl string) *WsBuilder {
b.wsConfig.WsUrl = wsUrl
return b
}
func (b *WsBuilder) ProxyUrl(proxyUrl string) *WsBuilder {
b.wsConfig.ProxyUrl = proxyUrl
return b
}
func (b *WsBuilder) ReqHeader(key, value string) *WsBuilder {
b.wsConfig.ReqHeaders[key] = append(b.wsConfig.ReqHeaders[key], value)
return b
}
func (b *WsBuilder) AutoReconnect() *WsBuilder {
b.wsConfig.IsAutoReconnect = true
return b
}
func (b *WsBuilder) Dump() *WsBuilder {
b.wsConfig.IsDump = true
return b
}
func (b *WsBuilder) Heartbeat(heartbeat func() []byte, t time.Duration) *WsBuilder {
b.wsConfig.HeartbeatIntervalTime = t
b.wsConfig.HeartbeatData = heartbeat
return b
}
func (b *WsBuilder) ReconnectInterval(t time.Duration) *WsBuilder {
b.wsConfig.reconnectInterval = t
return b
}
func (b *WsBuilder) ProtoHandleFunc(f func([]byte) error) *WsBuilder {
b.wsConfig.ProtoHandleFunc = f
return b
}
func (b *WsBuilder) DecompressFunc(f func([]byte) ([]byte, error)) *WsBuilder {
b.wsConfig.DecompressFunc = f
return b
}
func (b *WsBuilder) ErrorHandleFunc(f func(err error)) *WsBuilder {
b.wsConfig.ErrorHandleFunc = f
return b
}
func (b *WsBuilder) ConnectSuccessAfterSendMessage(msg func() []byte) *WsBuilder {
b.wsConfig.ConnectSuccessAfterSendMessage = msg
return b
}
func (b *WsBuilder) Build() *WsConn {
wsConn := &WsConn{WsConfig: *b.wsConfig}
return wsConn.NewWs()
}
func (ws *WsConn) NewWs() *WsConn {
if ws.HeartbeatIntervalTime == 0 {
ws.readDeadLineTime = time.Minute
} else {
ws.readDeadLineTime = ws.HeartbeatIntervalTime * 2
}
if err := ws.connect(); err != nil {
log.Error("[" + ws.WsUrl + "] " + err.Error())
return nil
}
ws.close = make(chan bool, 1)
ws.pingMessageBufferChan = make(chan []byte, 10)
ws.pongMessageBufferChan = make(chan []byte, 10)
ws.closeMessageBufferChan = make(chan []byte, 10)
ws.writeBufferChan = make(chan []byte, 10)
ws.reConnectLock = new(sync.Mutex)
go ws.writeRequest()
go ws.receiveMessage()
//if ws.ConnectSuccessAfterSendMessage != nil {
// msg := ws.ConnectSuccessAfterSendMessage()
// if msg != nil{
// ws.SendMessage(msg)
// log.ErrorLogMsg("[ws] " + ws.WsUrl + " execute the connect success after send message=" + string(msg))
// }else {
// log.ErrorLogMsg("执行重新连接后执行的登入函数[ws] " + ws.WsUrl + " ,send message=" + string(msg))
// }
//}
return ws
}
func (ws *WsConn) connect() error {
const maxRetries = 5 // 最大重试次数
const retryDelay = 2 * time.Second // 每次重试的延迟时间
var wsConn *websocket.Conn
var resp *http.Response
var err error
// 重试机制
for attempt := 1; attempt <= maxRetries; attempt++ {
if ws.ProxyUrl != "" {
proxy, err := url.Parse(ws.ProxyUrl)
if err == nil {
// log.Info("[ws][%s] proxy url:%s", zap.String("ws.WsUrl", ws.WsUrl))
dialer.Proxy = http.ProxyURL(proxy)
} else {
log.Error("[ws][" + ws.WsUrl + "] parse proxy url [" + ws.ProxyUrl + "] err: " + err.Error())
}
}
// 尝试连接
wsConn, resp, err = dialer.Dial(ws.WsUrl, http.Header(ws.ReqHeaders))
if err != nil {
log.Error(fmt.Sprintf("[ws][%s] Dial attempt %d failed: %s", ws.WsUrl, attempt, err.Error()))
// 如果开启了请求数据转储，打印响应信息
if ws.IsDump && resp != nil {
dumpData, _ := httputil.DumpResponse(resp, true)
log.Info(fmt.Sprintf("[ws][%s] Response dump: %s", ws.WsUrl, string(dumpData)))
}
// 达到最大重试次数，返回错误
if attempt == maxRetries {
return fmt.Errorf("达到最大重试次数 [ws][%s]: %v", ws.WsUrl, err)
}
// 等待一段时间后重试
time.Sleep(retryDelay)
} else {
// 连接成功，退出循环
break
}
}
// 设置读取超时时间
wsConn.SetReadDeadline(time.Now().Add(ws.readDeadLineTime))
// 如果开启了请求数据转储，打印响应信息
if ws.IsDump && resp != nil {
dumpData, _ := httputil.DumpResponse(resp, true)
log.Info(fmt.Sprintf("[ws][%s] Response dump: %s", ws.WsUrl, string(dumpData)))
}
// 记录连接成功的日志
log.Info("[ws][" + ws.WsUrl + "] connected")
ws.c = wsConn
return nil
}
func (ws *WsConn) reconnect() {
ws.reConnectLock.Lock()
defer ws.reConnectLock.Unlock()
ws.c.Close() //主动关闭一次
var err error
for retry := 1; retry <= 100; retry++ {
err = ws.connect()
if err != nil {
log.Error("[ws] [" + ws.WsUrl + "] websocket reconnect fail , " + err.Error())
} else {
break
}
time.Sleep(ws.WsConfig.reconnectInterval * time.Duration(retry))
}
if err != nil {
log.Error("[ws] [" + ws.WsUrl + "] retry connect 100 count fail , begin exiting. ")
ws.CloseWs()
if ws.ErrorHandleFunc != nil {
ws.ErrorHandleFunc(errors.New("retry reconnect fail"))
}
} else {
//re subscribe
if ws.ConnectSuccessAfterSendMessage != nil {
msg := ws.ConnectSuccessAfterSendMessage()
if msg != nil {
ws.SendMessage(msg)
//log.ErrorLogMsg("[ws] " + ws.WsUrl + " execute the connect success after send message=" + string(msg))
} else {
log.Error("执行重新连接后执行的登入函数[ws] " + ws.WsUrl + " ,send message=" + string(msg))
}
//ws.SendMessage(msg)
//log.InfoLog("[ws] [" + ws.WsUrl + "] execute the connect success after send message=" + string(msg))
time.Sleep(time.Second) //wait response
}
for _, sub := range ws.subs {
log.Info("[ws] re subscribe: " + string(sub))
ws.SendMessage(sub)
}
}
}
func (ws *WsConn) writeRequest() {
var (
heartTimer *time.Timer
err error
)
if ws.HeartbeatIntervalTime == 0 {
heartTimer = time.NewTimer(time.Hour)
} else {
heartTimer = time.NewTimer(ws.HeartbeatIntervalTime)
}
for {
select {
case <-ws.close:
log.Info("[ws][" + ws.WsUrl + "] close websocket , exiting write message goroutine.")
return
case d := <-ws.writeBufferChan:
err = ws.c.WriteMessage(websocket.TextMessage, d)
case d := <-ws.pingMessageBufferChan:
err = ws.c.WriteMessage(websocket.PingMessage, d)
case d := <-ws.pongMessageBufferChan:
err = ws.c.WriteMessage(websocket.PongMessage, d)
case d := <-ws.closeMessageBufferChan:
err = ws.c.WriteMessage(websocket.CloseMessage, d)
case <-heartTimer.C:
if ws.HeartbeatIntervalTime > 0 {
err = ws.c.WriteMessage(websocket.TextMessage, ws.HeartbeatData())
heartTimer.Reset(ws.HeartbeatIntervalTime)
}
}
if err != nil {
log.Info("[ws][" + ws.WsUrl + "] write message " + err.Error())
//time.Sleep(time.Second)
}
}
}
func (ws *WsConn) Subscribe(subEvent interface{}) error {
data, err := sonic.Marshal(subEvent)
if err != nil {
log.Error("[ws]["+ws.WsUrl+"] json encode error , ", zap.Error(err))
return err
}
//ws.writeBufferChan <- data
ws.SendMessage(data)
ws.subs = append(ws.subs, data)
return nil
}
func (ws *WsConn) SendMessage(msg []byte) {
defer func() {
//打印panic的错误信息
if err := recover(); err != nil { //产生了panic异常
fmt.Printf("SendMessage,panic: %s\r\n", err)
}
}()
ws.writeBufferChan <- msg
}
func (ws *WsConn) SendPingMessage(msg []byte) {
ws.pingMessageBufferChan <- msg
}
func (ws *WsConn) SendPongMessage(msg []byte) {
ws.pongMessageBufferChan <- msg
}
func (ws *WsConn) SendCloseMessage(msg []byte) {
ws.closeMessageBufferChan <- msg
}
func (ws *WsConn) SendJsonMessage(m interface{}) error {
data, err := sonic.Marshal(m)
if err != nil {
return err
}
//ws.writeBufferChan <- data
ws.SendMessage(data)
return nil
}
func (ws *WsConn) receiveMessage() {
//exit
ws.c.SetCloseHandler(func(code int, text string) error {
log.Info("[ws][" + ws.WsUrl + "] websocket exiting [code=" + utility.IntTostring(code) + " , text=" + text + "]")
//ws.CloseWs()
return nil
})
ws.c.SetPongHandler(func(pong string) error {
// log.Info("[" + ws.WsUrl + "] received [pong] " + pong)
ws.c.SetReadDeadline(time.Now().Add(ws.readDeadLineTime))
return nil
})
ws.c.SetPingHandler(func(ping string) error {
// log.Info("[" + ws.WsUrl + "] received [ping] " + ping)
ws.c.SetReadDeadline(time.Now().Add(ws.readDeadLineTime))
return nil
})
for {
select {
case <-ws.close:
log.Info("[ws][" + ws.WsUrl + "] close websocket , exiting receive message goroutine.")
return
default:
t, msg, err := ws.c.ReadMessage()
if err != nil {
log.Info("ws.c.ReadMessage[ws][" + ws.WsUrl + "] " + err.Error())
if ws.IsAutoReconnect {
log.Info("[ws][" + ws.WsUrl + "] Unexpected Closed , Begin Retry Connect.")
ws.reconnect()
continue
}
if ws.ErrorHandleFunc != nil {
ws.ErrorHandleFunc(err)
}
return
}
// Log.Debug(string(msg))
ws.c.SetReadDeadline(time.Now().Add(ws.readDeadLineTime))
switch t {
case websocket.TextMessage:
ws.ProtoHandleFunc(msg)
case websocket.BinaryMessage:
if ws.DecompressFunc == nil {
ws.ProtoHandleFunc(msg)
} else {
msg2, err := ws.DecompressFunc(msg)
if err != nil {
log.Error("[ws] decompress error " + ws.WsUrl + err.Error())
} else {
ws.ProtoHandleFunc(msg2)
}
}
// case websocket.CloseMessage:
// ws.CloseWs()
default:
log.Error("[ws][" + ws.WsUrl + "] error websocket message type , content is " + string(msg))
}
}
}
}
func (ws *WsConn) CloseWs() {
defer func() {
//打印panic的错误信息
if err := recover(); err != nil { //产生了panic异常
fmt.Printf("CloseWs,panic: %s\r\n", err)
}
}()
//ws.close <- true
close(ws.close)
close(ws.writeBufferChan)
close(ws.closeMessageBufferChan)
close(ws.pingMessageBufferChan)
close(ws.pongMessageBufferChan)
err := ws.c.Close()
if err != nil {
log.Error("CloseWs[ws]["+ws.WsUrl+"] close websocket error ,", zap.Error(err))
}
}
func (ws *WsConn) clearChannel(c chan struct{}) {
for {
if len(c) > 0 {
<-c
} else {
break
}
}
}