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How to use Notify method of websocket Package

Best Testkube code snippet using websocket.Notify

websocket.go

Source:websocket.go

...32	server    *http.Server33	httpMutex *http.ServeMux34}3536type CloseNotifyConn struct {37	net.Conn3839	// 1 means closed40	closeFlag int324142	closeFn func()43}4445func (cc *CloseNotifyConn) Close() (err error) {46	pflag := atomic.SwapInt32(&cc.closeFlag, 1)47	if pflag == 0 {48		err = cc.Close()49		if cc.closeFn != nil {50			cc.closeFn()51		}52	}53	return54}5556// closeFn will be only called once57func WrapCloseNotifyConn(c net.Conn, closeFn func()) net.Conn {58	return &CloseNotifyConn{59		Conn:    c,60		closeFn: closeFn,61	}62}6364// NewWebsocketListener to handle websocket connections65// ln: tcp listener for websocket connections66func NewWebsocketListener(ln net.Listener, certFile_keyFile ...string) (wl *WebsocketListener) {67	wl = &WebsocketListener{68		acceptCh: make(chan net.Conn),69	}7071	muxer := http.NewServeMux()72	muxer.HandleFunc("/test", func(resp http.ResponseWriter, r *http.Request) {73		fmt.Fprintf(resp, "Test Start ok:%s", r.Host)74	})75	muxer.Handle(FrpWebsocketPath, websocket.Handler(func(c *websocket.Conn) {76		// host := c.Request().Header.Get("Host")77		// log.Println("Recv Host:", host)78		notifyCh := make(chan struct{})79		conn := WrapCloseNotifyConn(c, func() {80			close(notifyCh)81		})82		wl.acceptCh <- conn83		<-notifyCh84	}))85	muxer.Handle(FrpWebsocketPath2, websocket.Handler(func(c *websocket.Conn) {86		notifyCh := make(chan struct{})87		conn := WrapCloseNotifyConn(c, func() {88			close(notifyCh)89		})90		wl.acceptCh <- conn91		<-notifyCh92	}))9394	if certFile_keyFile != nil && len(certFile_keyFile) == 2 {9596		wl.server = &http.Server{97			Addr:    ln.Addr().String(),98			Handler: muxer,99		}100101		go wl.server.ServeTLS(ln, certFile_keyFile[0], certFile_keyFile[1])
...

websocket_controller.go

Source:websocket_controller.go

1package controller2import (3	"sync"4	"github.com/sirupsen/logrus"5	"k8s.io/client-go/tools/cache"6	"github.com/longhorn/longhorn-manager/datastore"7)8type SimpleResourceEventHandler struct{ ChangeFunc func() }9func (s SimpleResourceEventHandler) OnAdd(obj interface{})               { s.ChangeFunc() }10func (s SimpleResourceEventHandler) OnUpdate(oldObj, newObj interface{}) { s.ChangeFunc() }11func (s SimpleResourceEventHandler) OnDelete(obj interface{})            { s.ChangeFunc() }12type Watcher struct {13	eventChan  chan struct{}14	resources  []string15	controller *WebsocketController16}17func (w *Watcher) Events() <-chan struct{} {18	return w.eventChan19}20func (w *Watcher) Close() {21	close(w.eventChan)22}23type WebsocketController struct {24	*baseController25	cacheSyncs []cache.InformerSynced26	watchers    []*Watcher27	watcherLock sync.Mutex28}29func NewWebsocketController(30	logger logrus.FieldLogger,31	ds *datastore.DataStore,32) *WebsocketController {33	wc := &WebsocketController{34		baseController: newBaseController("longhorn-websocket", logger),35	}36	ds.VolumeInformer.AddEventHandler(wc.notifyWatchersHandler("volume"))37	wc.cacheSyncs = append(wc.cacheSyncs, ds.VolumeInformer.HasSynced)38	ds.EngineInformer.AddEventHandler(wc.notifyWatchersHandler("engine"))39	wc.cacheSyncs = append(wc.cacheSyncs, ds.EngineInformer.HasSynced)40	ds.ReplicaInformer.AddEventHandler(wc.notifyWatchersHandler("replica"))41	wc.cacheSyncs = append(wc.cacheSyncs, ds.ReplicaInformer.HasSynced)42	ds.SettingInformer.AddEventHandler(wc.notifyWatchersHandler("setting"))43	wc.cacheSyncs = append(wc.cacheSyncs, ds.SettingInformer.HasSynced)44	ds.EngineImageInformer.AddEventHandler(wc.notifyWatchersHandler("engineImage"))45	wc.cacheSyncs = append(wc.cacheSyncs, ds.EngineImageInformer.HasSynced)46	ds.BackingImageInformer.AddEventHandler(wc.notifyWatchersHandler("backingImage"))47	wc.cacheSyncs = append(wc.cacheSyncs, ds.BackingImageInformer.HasSynced)48	ds.NodeInformer.AddEventHandler(wc.notifyWatchersHandler("node"))49	wc.cacheSyncs = append(wc.cacheSyncs, ds.NodeInformer.HasSynced)50	ds.BackupTargetInformer.AddEventHandler(wc.notifyWatchersHandler("backupTarget"))51	wc.cacheSyncs = append(wc.cacheSyncs, ds.BackupTargetInformer.HasSynced)52	ds.BackupVolumeInformer.AddEventHandler(wc.notifyWatchersHandler("backupVolume"))53	wc.cacheSyncs = append(wc.cacheSyncs, ds.BackupVolumeInformer.HasSynced)54	ds.BackupInformer.AddEventHandler(wc.notifyWatchersHandler("backup"))55	wc.cacheSyncs = append(wc.cacheSyncs, ds.BackupInformer.HasSynced)56	ds.RecurringJobInformer.AddEventHandler(wc.notifyWatchersHandler("recurringJob"))57	wc.cacheSyncs = append(wc.cacheSyncs, ds.RecurringJobInformer.HasSynced)58	return wc59}60func (wc *WebsocketController) NewWatcher(resources ...string) *Watcher {61	wc.watcherLock.Lock()62	defer wc.watcherLock.Unlock()63	w := &Watcher{64		eventChan:  make(chan struct{}, 2),65		resources:  resources,66		controller: wc,67	}68	wc.watchers = append(wc.watchers, w)69	return w70}71func (wc *WebsocketController) Run(stopCh <-chan struct{}) {72	defer wc.Close()73	wc.logger.Infof("Start Longhorn websocket controller")74	defer wc.logger.Infof("Shutting down Longhorn websocket controller")75	if !cache.WaitForNamedCacheSync("longhorn websocket", stopCh, wc.cacheSyncs...) {76		return77	}78	<-stopCh79}80func (wc *WebsocketController) Close() {81	wc.watcherLock.Lock()82	defer wc.watcherLock.Unlock()83	for _, w := range wc.watchers {84		w.Close()85	}86	wc.watchers = wc.watchers[:0]87}88func (wc *WebsocketController) notifyWatchersHandler(resource string) cache.ResourceEventHandler {89	return SimpleResourceEventHandler{90		ChangeFunc: wc.notifyWatchersFunc(resource),91	}92}93func (wc *WebsocketController) notifyWatchersFunc(resource string) func() {94	return func() {95		wc.watcherLock.Lock()96		defer wc.watcherLock.Unlock()97		for _, w := range wc.watchers {98			for _, r := range w.resources {99				if r == resource {100					select {101					case w.eventChan <- struct{}{}:102					default:103					}104					break105				}106			}107		}108	}109}...

Notify

Using AI Code Generation

1func main() {2    if err != nil {3        log.Fatal("dial:", err)4    }5    defer c.Close()6    done := make(chan struct{})7    go func() {8        defer close(done)9        for {10            _, message, err := c.ReadMessage()11            if err != nil {12                log.Println("read:", err)13            }14            log.Printf("recv: %s", message)15        }16    }()17    ticker := time.NewTicker(time.Second)18    defer ticker.Stop()19    for {20        select {21            err := c.WriteMessage(websocket.TextMessage, []byte(t.String()))22            if err != nil {23                log.Println("write:", err)24            }25        }26    }27}28func main() {29    if err != nil {30        log.Fatal("dial:", err)31    }32    defer c.Close()33    done := make(chan struct{})34    go func() {35        defer close(done)36        for {37            _, message, err := c.ReadMessage()38            if err != nil {39                log.Println("read:", err)40            }41            log.Printf("recv: %s", message)42        }43    }()44    ticker := time.NewTicker(time.Second)45    defer ticker.Stop()46    for {47        select {48            err := c.WriteMessage(websocket.TextMessage, []byte(t.String()))49            if err != nil {50                log.Println("write:", err)51            }52        }53    }54}55func main() {56    if err != nil {57        log.Fatal("dial:", err)58    }59    defer c.Close()60    done := make(chan struct{})61    go func() {62        defer close(done)63        for {64            _, message, err := c.ReadMessage()

Notify

Using AI Code Generation

1import (2var addr = flag.String("addr", "localhost:8080", "http service address")3var upgrader = websocket.Upgrader{4}5func main() {6	flag.Parse()7	log.SetFlags(0)8	http.HandleFunc("/", handler)9	log.Fatal(http.ListenAndServe(*addr, nil))10}11func handler(w http.ResponseWriter, r *http.Request) {12	c, err := upgrader.Upgrade(w, r, nil)13	if err != nil {14		log.Print("upgrade:", err)15	}16	defer c.Close()17	for {18		_, message, err := c.ReadMessage()19		if err != nil {20			log.Println("read:", err)21		}22		log.Printf("recv: %s", message)23		err = c.WriteMessage(websocket.TextMessage, []byte(time.Now().Format("2006-01-02 15:04:05")))24		if err != nil {25			log.Println("write:", err)26		}27	}28}29import (30var addr = flag.String("addr", "localhost:8080", "http service address")31var upgrader = websocket.Upgrader{32}33func main() {34	flag.Parse()35	log.SetFlags(0)36	http.HandleFunc("/", serveHome)37	http.HandleFunc("/ws", serveWs)38	log.Fatal(http.ListenAndServe(*addr, nil))39}40func serveHome(w http.ResponseWriter, r *http.Request) {41	http.ServeFile(w, r, "index.html")42}43func serveWs(w http.ResponseWriter, r *http.Request) {44	c, err := upgrader.Upgrade(w, r, nil)45	if err != nil {46		log.Print("upgrade:", err)47	}48	defer c.Close()49	for {50		_, message, err := c.ReadMessage()51		if err != nil {52			log.Println("read:", err)53		}54		log.Printf("recv: %s

Notify

Using AI Code Generation

1import (2var upgrader = websocket.Upgrader{3}4func main() {5	http.HandleFunc("/", wsPage)6	http.HandleFunc("/ws", wsEndpoint)7	log.Println("Server is listening on port 8080...")8	log.Fatal(http.ListenAndServe(":8080", nil))9}10func wsPage(w http.ResponseWriter, r *http.Request) {11	http.ServeFile(w, r, "index.html")12}13func wsEndpoint(w http.ResponseWriter, r *http.Request) {14	upgrader.CheckOrigin = func(r *http.Request) bool { return true }15	ws, err := upgrader.Upgrade(w, r, nil)16	if err != nil {17		log.Println(err)18	}19	go func() {20		for {21			time.Sleep(2 * time.Second)22			err := ws.WriteMessage(1, []byte("Hello Client"))23			if err != nil {24				log.Println(err)25			}26		}27	}()28	for {29		messageType, p, err := ws.ReadMessage()30		if err != nil {31			log.Println(err)32		}33		fmt.Println(string(p))34		if err := ws.WriteMessage(messageType, p); err != nil {35			log.Println(err)36		}37	}38}39        ws.onmessage = function (event) {40            console.log(event.data);41        };42import (

Notify

Using AI Code Generation

1import (2var upgrader = websocket.Upgrader{3}4func main() {5	http.HandleFunc("/ws", wsHandler)6	http.ListenAndServe(":8080", nil)7}8func wsHandler(w http.ResponseWriter, r *http.Request) {9	ws, err := upgrader.Upgrade(w, r, nil)10	if err != nil {11		log.Println(err)12	}13	defer ws.Close()14	for {15		mt, msg, err := ws.ReadMessage()16		if err != nil {17			log.Println(err)18		}19		fmt.Printf("Message Received: %s20		err = ws.WriteMessage(mt, msg)21		if err != nil {22			log.Println(err)23		}24	}25}26		ws.onmessage = function (event) {27			console.log(event.data);28		};29		$("#send").click(function () {30			ws.send($("#message").val());31		});

Notify

Using AI Code Generation

1import (2func main() {3    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {4        fmt.Println("Websocket connection opened")5        ws, err := websocket.Upgrade(w, r, w.Header(), 1024, 1024)6        if _, ok := err.(websocket.HandshakeError); ok {7            http.Error(w, "Not a websocket handshake", 400)8        } else if err != nil {9        }10        go func() {11            for {12                _, msg, err := ws.ReadMessage()13                if err != nil {14                }15                fmt.Println("Message Received: ", string(msg))16            }17        }()18    })19    http.ListenAndServe(":8081", nil)20}21import (22func main() {23    if err != nil {24        panic(err)25    }26    err = websocket.Message.Send(ws, "Hello World")27    if err != nil {28        panic(err)29    }30}

Notify

Using AI Code Generation

1import (2var upgrader = websocket.Upgrader{}3func main() {4	http.HandleFunc("/", serveWs)5	log.Fatal(http.ListenAndServe(":8080", nil))6}7func serveWs(w http.ResponseWriter, r *http.Request) {8	fmt.Println(r.Host)9	conn, err := upgrader.Upgrade(w, r, nil)10	if err != nil {11		log.Println(err)12	}13	_, msg, err := conn.ReadMessage()14	if err != nil {15		log.Println(err)16	}17	fmt.Println(string(msg))18	err = conn.WriteMessage(1, []byte("Hello Client"))19	if err != nil {20		log.Println(err)21	}22}23net/http.(*conn).serve.func1(0xc0420d4000)24panic(0x4d8e00, 0x60d2e0)25github.com/gorilla/websocket.(*Conn).NextReader(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)26github.com/gorilla/websocket.(*Conn).ReadMessage(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)

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