How to use Selector method of websocket Package

Best Testkube code snippet using websocket.Selector

watch_test.go

Source:watch_test.go Github

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...356 table := []struct {357 path string358 rawQuery string359 resourceVersion string360 labelSelector string361 fieldSelector string362 namespace string363 }{364 {365 path: rootPath,366 rawQuery: "resourceVersion=1234",367 resourceVersion: "1234",368 labelSelector: "",369 fieldSelector: "",370 namespace: metav1.NamespaceAll,371 }, {372 path: rootPath,373 rawQuery: "resourceVersion=314159&fieldSelector=Host%3D&labelSelector=name%3Dfoo",374 resourceVersion: "314159",375 labelSelector: "name=foo",376 fieldSelector: "Host=",377 namespace: metav1.NamespaceAll,378 }, {379 path: rootPath,380 rawQuery: "fieldSelector=id%3dfoo&resourceVersion=1492",381 resourceVersion: "1492",382 labelSelector: "",383 fieldSelector: "id=foo",384 namespace: metav1.NamespaceAll,385 }, {386 path: rootPath,387 rawQuery: "",388 resourceVersion: "",389 labelSelector: "",390 fieldSelector: "",391 namespace: metav1.NamespaceAll,392 },393 {394 path: namespacedPath,395 rawQuery: "resourceVersion=1234",396 resourceVersion: "1234",397 labelSelector: "",398 fieldSelector: "",399 namespace: "other",400 }, {401 path: namespacedPath,402 rawQuery: "resourceVersion=314159&fieldSelector=Host%3D&labelSelector=name%3Dfoo",403 resourceVersion: "314159",404 labelSelector: "name=foo",405 fieldSelector: "Host=",406 namespace: "other",407 }, {408 path: namespacedPath,409 rawQuery: "fieldSelector=id%3dfoo&resourceVersion=1492",410 resourceVersion: "1492",411 labelSelector: "",412 fieldSelector: "id=foo",413 namespace: "other",414 }, {415 path: namespacedPath,416 rawQuery: "",417 resourceVersion: "",418 labelSelector: "",419 fieldSelector: "",420 namespace: "other",421 },422 }423 for _, item := range table {424 simpleStorage.requestedLabelSelector = labels.Everything()425 simpleStorage.requestedFieldSelector = fields.Everything()426 simpleStorage.requestedResourceVersion = "5" // Prove this is set in all cases427 simpleStorage.requestedResourceNamespace = ""428 dest.Path = item.path429 dest.RawQuery = item.rawQuery430 resp, err := http.Get(dest.String())431 if err != nil {432 t.Errorf("%v: unexpected error: %v", item.rawQuery, err)433 continue434 }435 resp.Body.Close()436 if e, a := item.namespace, simpleStorage.requestedResourceNamespace; e != a {437 t.Errorf("%v: expected %v, got %v", item.rawQuery, e, a)438 }439 if e, a := item.resourceVersion, simpleStorage.requestedResourceVersion; e != a {440 t.Errorf("%v: expected %v, got %v", item.rawQuery, e, a)441 }442 if e, a := item.labelSelector, simpleStorage.requestedLabelSelector.String(); e != a {443 t.Errorf("%v: expected %v, got %v", item.rawQuery, e, a)444 }445 if e, a := item.fieldSelector, simpleStorage.requestedFieldSelector.String(); e != a {446 t.Errorf("%v: expected %v, got %v", item.rawQuery, e, a)447 }448 }449}450func TestWatchProtocolSelection(t *testing.T) {451 simpleStorage := &SimpleRESTStorage{}452 handler := handle(map[string]rest.Storage{"simples": simpleStorage})453 server := httptest.NewServer(handler)454 defer server.Close()455 defer server.CloseClientConnections()456 client := http.Client{}457 dest, _ := url.Parse(server.URL)458 dest.Path = "/" + prefix + "/" + testGroupVersion.Group + "/" + testGroupVersion.Version + "/watch/simples"459 dest.RawQuery = ""...

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watcher.go

Source:watcher.go Github

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...17func (h *ServiceHandler) watchHandler(req *restful.Request, resp *restful.Response) {18 resource := req.PathParameter("resource")19 namespace := req.PathParameter("namespace")20 name := req.PathParameter("name")21 fieldSelector := req.QueryParameter("fieldSelector")22 // TODO filter by labels23 // handle websocket24 if isWebSocketRequest(req.Request) {25 klog.Infof("it is websocket")26 websocket.Handler(func(ws *websocket.Conn) {27 h.handleWS(ws, resource, fieldSelector, namespace, name)28 }).ServeHTTP(resp.ResponseWriter, req.Request)29 return30 }31 if _, ok := h.ServerHandler[resource]; !ok {32 klog.Errorf("unsupport resource: %s in watch operation.", resource)33 resp.WriteError(http.StatusBadRequest, fmt.Errorf("unsupport resource in watch operation."))34 return35 }36 h.doChunkWatch(h.Ctx, resource, fieldSelector, namespace, name, resp)37}38func isWebSocketRequest(req *http.Request) bool {39 if !strings.EqualFold(req.Header.Get("Upgrade"), "websocket") {40 return false41 }42 return connectionUpgradeRegex.MatchString(strings.ToLower(req.Header.Get("Connection")))43}44func (h *ServiceHandler) handleWS(ws *websocket.Conn, resource, fieldSelector, namespace, name string) {45 if _, ok := h.ServerHandler[resource]; !ok {46 klog.Errorf("unsupport resource: %s in watch operation.", resource)47 ws.Close()48 return49 }50 h.doWebsocketWatch(h.Ctx, resource, fieldSelector, namespace, name, ws)51}52func (h *ServiceHandler) doChunkWatch(ctx *HandlerContext, objType, fieldSelector, namespace, name string, resp *restful.Response) {53 w := resp.ResponseWriter54 flusher, ok := w.(http.Flusher)55 if !ok {56 klog.Errorf("failed to get flush")57 resp.WriteError(http.StatusInternalServerError, fmt.Errorf("failed to get flush"))58 return59 }60 w.Header().Set("Content-Type", "application/json")61 w.Header().Set("Transfer-Encoding", "chunked")62 w.WriteHeader(http.StatusOK)63 flusher.Flush()64 // send the init watch event65 watchEventList := h.ServerHandler[objType].GetInitWatchEvent(fieldSelector, namespace, name)66 for _, event := range watchEventList {67 data, err := json.Marshal(event)68 if err != nil {69 klog.Errorf("json marshal watch event failed: %v", err)70 continue71 }72 fmt.Fprintf(w, "%s\n", string(data))73 }74 flusher.Flush()75 // set watch channel76 newChan := make(chan metav1.WatchEvent)77 key := util.GetUniqueId()78 ctx.EdgeSubscriber.Add(objType, key, newChan)79 isConnected := true80 for isConnected {81 select {82 case event := <-newChan:83 // check if this event is needed84 if !checkIsNeedToWatch(objType, fieldSelector, namespace, name, event.Object.Object) {85 klog.V(5).Infof("fieldSelector %s don't match %s-%s-%s", fieldSelector, objType, namespace, name)86 break87 }88 data, err := json.Marshal(event)89 if err != nil {90 klog.Errorf("get watch event failed: %v", err)91 continue92 }93 fmt.Fprintf(w, "%s\n", string(data))94 if len(newChan) == 0 {95 flusher.Flush()96 }97 case <-w.(http.CloseNotifier).CloseNotify():98 klog.Infof("watch %s-%s-%s connection closed", objType, namespace, name)99 isConnected = false100 }101 }102 ctx.EdgeSubscriber.Delete(objType, key)103}104func (h *ServiceHandler) doWebsocketWatch(ctx *HandlerContext, objType, fieldSelector, namespace, name string, ws *websocket.Conn) {105 // set watch channel106 newChan := make(chan metav1.WatchEvent)107 key := strconv.FormatInt(time.Now().Unix(), 10)108 ctx.EdgeSubscriber.Add(objType, key, newChan)109 // send the init watch event110 watchEventList := h.ServerHandler[objType].GetInitWatchEvent(fieldSelector, namespace, name)111 for _, event := range watchEventList {112 data, err := json.Marshal(event)113 if err != nil {114 klog.Errorf("json marshal watch event failed: %v", err)115 continue116 }117 if err := websocket.Message.Send(ws, data); err != nil {118 klog.Errorf("send message error:%v", err)119 }120 }121 isConnected := true122 for isConnected {123 select {124 case event := <-newChan:125 // check if this event is needed126 if !checkIsNeedToWatch(objType, fieldSelector, namespace, name, event.Object.Object) {127 klog.V(5).Infof("fieldSelector %s don't match %s-%s-%s", fieldSelector, objType, namespace, name)128 break129 }130 data, err := json.Marshal(event)131 if err != nil {132 klog.Errorf("get watch event failed: %v", err)133 continue134 }135 if err := websocket.Message.Send(ws, data); err != nil {136 klog.Errorf("send message error:%v", err)137 isConnected = false138 }139 }140 }141 ctx.EdgeSubscriber.Delete(objType, key)142}143func checkIsNeedToWatch(objType, fieldSelector, namespace, name string, obj runtime.Object) bool {144 var getNodeName string145 resource := reflect.ValueOf(obj).Elem()146 getNamespace := resource.FieldByName("ObjectMeta").FieldByName("Namespace")147 getName := resource.FieldByName("ObjectMeta").FieldByName("Name")148 if objType == util.ResourcePod {149 getNodeName = resource.FieldByName("Spec").FieldByName("NodeName").String()150 }151 // when k3s agent watches kubernetes endpoint, edgehub is no need to send the changed endpoint.152 if fieldSelector == "metadata.name=kubernetes" && objType == util.ResourceEndpoint {153 return false154 }155 // check if the resource is the watching one by the query params, if not, then it is no need to watch it.156 if !IsFilterFromQueryParams(fieldSelector, getNodeName, getName.String()) {157 return false158 }159 switch objType {160 case util.ResourceNode:161 if name != "" && getName.String() != name {162 return false163 }164 default:165 if (namespace != "" && getNamespace.String() != namespace) || (name != "" && getName.String() != name) {166 return false167 }168 }169 return true170}...

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listener.go

Source:listener.go Github

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...24}25func (l *WebsocketListener) Name() string {26 return common.ListenerName("websocket.all-events")27}28func (l *WebsocketListener) Selector() string {29 return l.selector30}31func (l *WebsocketListener) Events() []testkube.EventType {32 return l.events33}34func (l *WebsocketListener) Metadata() map[string]string {35 ids := "["36 for _, w := range l.Websockets {37 ids += w.Id + " "38 }39 ids += "]"40 return map[string]string{41 "name": l.Name(),42 "selector": l.Selector(),43 "clients": ids,44 }45}46func (l *WebsocketListener) Notify(event testkube.Event) (result testkube.EventResult) {47 var success, failed []string48 for _, w := range l.Websockets {49 l.Log.Infow("notifying websocket", "id", w.Id, "event", event.Type)50 err := w.Conn.WriteJSON(event)51 if err != nil {52 failed = append(failed, w.Id)53 } else {54 success = append(success, w.Id)55 }56 }...

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Selector

Using AI Code Generation

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1import (2var upgrader = websocket.Upgrader{3}4func main() {5 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {6 conn, err := upgrader.Upgrade(w, r, nil)7 if err != nil {8 log.Println(err)9 }10 for {11 messageType, p, err := conn.ReadMessage()12 if err != nil {13 log.Println(err)14 }15 fmt.Println(string(p))16 if err := conn.WriteMessage(messageType, p); err != nil {17 log.Println(err)18 }19 }20 })21 http.ListenAndServe(":8080", nil)22}23import (24var upgrader = websocket.Upgrader{25}26func main() {27 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {28 conn, err := upgrader.Upgrade(w, r, nil)29 if err != nil {30 log.Println(err)31 }32 for {33 messageType, p, err := conn.ReadMessage()34 if err != nil {35 log.Println(err)36 }37 fmt.Println(string(p))38 if err := conn.WriteMessage(messageType, p); err != nil {39 log.Println(err)40 }41 }42 })43 http.ListenAndServe(":8080", nil)44}45import (46var upgrader = websocket.Upgrader{47}48func main() {49 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {50 conn, err := upgrader.Upgrade(w, r, nil)

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Selector

Using AI Code Generation

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1import (2func main() {3 ws, err := websocket.Dial(url, "", origin)4 if err != nil {5 fmt.Println(err)6 }7 defer ws.Close()8 var msg = make([]byte, 512)9 if n, err = ws.Read(msg); err != nil {10 fmt.Println(err)11 }12 fmt.Printf("Received: %s.\n", msg[:n])13}14import (15func main() {16 ws, err := websocket.Dial(url, "", origin)17 if err != nil {18 fmt.Println(err)19 }20 defer ws.Close()21 var msg = make([]byte, 512)22 if n, err = ws.Read(msg); err != nil {23 fmt.Println(err)24 }25 fmt.Printf("Received: %s.\n", msg[:n])26}27import (28func main() {29 ws, err := websocket.Dial(url, "", origin)30 if err != nil {31 fmt.Println(err)32 }33 defer ws.Close()34 var msg = make([]byte, 512)35 if n, err = ws.Read(msg); err != nil {36 fmt.Println(err)37 }38 fmt.Printf("Received: %s.\n", msg[:n])39}40import (41func main() {42 ws, err := websocket.Dial(url, "", origin)43 if err != nil {44 fmt.Println(err)45 }46 defer ws.Close()

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Selector

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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}

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Selector

Using AI Code Generation

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1import (2func main() {3 ws, err := websocket.Dial(url, "", origin)4 if err != nil {5 fmt.Println("Error in Dialing: ", err)6 }7 var msg = make([]byte, 512)8 if n, err = ws.Read(msg); err != nil {9 fmt.Println("Error in reading: ", err)10 }11 fmt.Printf("Received: %s.\n", msg[:n])12 fmt.Scanln(&reply)13 fmt.Println("Sending to server: ", reply)14 msg = []byte(reply)15 if _, err = ws.Write(msg); err != nil {16 fmt.Println("Error in writing: ", err)17 }18}19import (20func main() {21 ws, err := websocket.Dial(url, "", origin)22 if err != nil {23 fmt.Println("Error in Dialing: ", err)24 }25 var msg = make([]byte, 512)26 if n, err = ws.Read(msg); err != nil {27 fmt.Println("Error in reading: ", err)28 }29 fmt.Printf("Received: %s.\n", msg[:n])30 fmt.Scanln(&reply)31 fmt.Println("Sending to server: ", reply)32 msg = []byte(reply)33 if _, err = ws.Write(msg); err != nil {34 fmt.Println("Error in writing: ", err)35 }36}37import (38func main() {39 ws, err := websocket.Dial(url, "", origin)40 if err != nil {41 fmt.Println("Error in Dialing: ", err)42 }43 var msg = make([]byte, 512)44 if n, err = ws.Read(msg); err

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Selector

Using AI Code Generation

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1import ( 2func EchoServer(ws *websocket.Conn) { 3 for {4 if err = websocket.Message.Receive(ws, &reply); err != nil {5 fmt.Println("Can't receive")6 }7 fmt.Println("Received back from client: " + reply)8 fmt.Println("Sending to client: " + msg)9 if err = websocket.Message.Send(ws, msg); err != nil {10 fmt.Println("Can't send")11 }12 }13}14func main() { 15 http.Handle("/echo", websocket.Handler(EchoServer))16 if err := http.ListenAndServe(":1234", nil); err != nil {17 log.Fatal("ListenAndServe:", err)18 }19}20net/http.(*conn).serve.func1(0xc0420b0000) 21panic(0x4b9e00, 0x6b8d70) 22golang.org/x/net/websocket.(*Conn).write(0x0, 0xc0420b4d80, 0x2, 0x2, 0x0, 0x0) 23golang.org/x/net/websocket.(*Conn).WriteJSON(0x0, 0x4c3a20, 0xc0420b4d80, 0x0, 0x0) 24golang.org/x/net/websocket.Message.Send(0x0, 0x4c3a20, 0xc0420b4d80,

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Selector

Using AI Code Generation

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1import (2func main() {3 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {4 ws, err := websocket.Upgrade(w, r, w.Header(), 1024, 1024)5 if _, ok := err.(websocket.HandshakeError); ok {6 http.Error(w, "Not a websocket handshake", 400)7 } else if err != nil {8 }9 fmt.Println("Connected")10 })11 http.ListenAndServe(":8080", nil)12}13import (14func main() {15 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {16 if err != nil {17 fmt.Println("Error: ", err)18 }19 fmt.Println("Connected")20 })21 http.ListenAndServe(":8080", nil)22}

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Selector

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1import (2func main() {3 fmt.Print("Enter URL: ")4 fmt.Scanln(&url)5 fmt.Print("Enter message: ")6 fmt.Scanln(&message)7 conn, _, err = websocket.DefaultDialer.Dial(url, nil)8 if err != nil {9 fmt.Println(err)10 os.Exit(1)11 }12 defer conn.Close()13 err = conn.WriteMessage(websocket.TextMessage, []byte(message))14 if err != nil {15 fmt.Println(err)16 os.Exit(1)17 }18 _, response, err = conn.ReadMessage()19 if err != nil {20 fmt.Println(err)21 os.Exit(1)22 }23 fmt.Println(string(response))24}

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Selector

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1import (2func main() {3 header := make(http.Header)4 dialer := websocket.Dialer{}5 conn, _, err := dialer.Dial(url, header)6 if err != nil {7 panic(err)8 }9 defer conn.Close()10 _, msg, err := conn.ReadMessage()11 if err != nil {12 panic(err)13 }14 fmt.Println("Message: ", string(msg))15 _, msg, err = conn.ReadMessage()16 if err != nil {17 panic(err)18 }19 fmt.Println("Message: ", string(msg))20 _, msg, err = conn.ReadMessage()21 if err != nil {22 panic(err)23 }24 fmt.Println("Message: ", string(msg))25 _, msg, err = conn.ReadMessage()26 if err != nil {27 panic(err)28 }29 fmt.Println("Message: ", string(msg))30 _, msg, err = conn.ReadMessage()31 if err != nil {32 panic(err)33 }34 fmt.Println("Message: ", string(msg))35 _, msg, err = conn.ReadMessage()36 if err != nil {37 panic(err)38 }39 fmt.Println("Message: ", string(msg))40 _, msg, err = conn.ReadMessage()41 if err != nil {42 panic(err)43 }44 fmt.Println("Message: ", string(msg))45 _, msg, err = conn.ReadMessage()46 if err != nil {47 panic(err)48 }49 fmt.Println("Message: ", string(msg))50 _, msg, err = conn.ReadMessage()51 if err != nil {52 panic(err)53 }54 fmt.Println("Message: ", string(msg))55 _, msg, err = conn.ReadMessage()56 if err != nil {57 panic(err)58 }59 fmt.Println("Message: ", string(msg))

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Selector

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1import (2func main() {3 doc := js.Global.Get("document")4 e := doc.Call("querySelector", "#test")5 fmt.Println(e)6}7import (8func main() {9 doc := js.Global.Get("document")10 e := doc.Call("querySelector", "#test")11 fmt.Println(e.Get("innerHTML"))12}13import (14func main() {15 doc := js.Global.Get("document")16 e := doc.Call("querySelector", "#test")17 e.Set("innerHTML", "Hello World")18}19import (20func main() {21 doc := js.Global.Get("document")22 e := doc.Call("querySelector", "#test")23 e.Set("innerHTML", "Hello World")24 fmt.Println(e.Get("innerHTML"))25}26import (27func main() {28 doc := js.Global.Get("document")29 e := doc.Call("querySelector", "#test")30 e.Set("innerHTML", "Hello World")31 fmt.Println(e.Get("innerHTML"))32 e.Set("innerHTML", "Hello World Again")

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