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Merge pull request #96 from EliasDeHondt/websockets
Websockets
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| package handlers | ||
|
|
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| import ( | ||
| "github.com/gin-gonic/gin" | ||
| "github.com/gorilla/websocket" | ||
| "log" | ||
| "net/http" | ||
| "time" | ||
| ) | ||
|
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| var upgrader = websocket.Upgrader{ | ||
| CheckOrigin: func(r *http.Request) bool { | ||
| origin := r.Header.Get("Origin") | ||
| return origin == GetFrontendIP() | ||
| }, | ||
| } | ||
|
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| func HandleMetricsSocket(ctx *gin.Context) { | ||
| conn, err := upgrader.Upgrade(ctx.Writer, ctx.Request, nil) | ||
| if err != nil { | ||
| log.Println("Error upgrading metrics socket:", err) | ||
| return | ||
| } | ||
| defer func(conn *websocket.Conn) { | ||
| err := conn.Close() | ||
| if err != nil { | ||
| log.Println("Error closing metrics socket:", err) | ||
| } | ||
| }(conn) | ||
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| for { | ||
| stats, err := c.GetTotalUsage() | ||
| if err != nil { | ||
| log.Println("Error getting metrics stats:", err) | ||
| return | ||
| } | ||
|
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| err = conn.WriteJSON(stats) | ||
| if err != nil { | ||
| log.Println("Error writing metrics stats:", err) | ||
| if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseAbnormalClosure) { | ||
| log.Println("WebSocket connection closed by client.") | ||
| } | ||
| break | ||
| } | ||
| time.Sleep(500 * time.Millisecond) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| import {Injectable, OnDestroy} from "@angular/core"; | ||
| import {Subject} from "rxjs"; | ||
| import {Metrics} from "../domain/Metrics"; | ||
| import {environment} from "../../environments/environment"; | ||
|
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| @Injectable({ | ||
| providedIn: 'root' | ||
| }) | ||
| export class StatWebSocketService implements OnDestroy { | ||
| private url = `${environment.BASE_URL}/secured/statsocket`; | ||
| private socket!: WebSocket; | ||
| private messagesSubject: Subject<Metrics> = new Subject() | ||
|
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| constructor() { | ||
| } | ||
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| connect(): void { | ||
| this.socket = new WebSocket(this.url); | ||
|
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| this.socket.onopen = () => { | ||
| } | ||
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| this.socket.onmessage = (event: MessageEvent) => { | ||
| try { | ||
| const data: Metrics = JSON.parse(event.data); | ||
| this.messagesSubject.next(data) | ||
| } catch (error) { | ||
| console.error("[WebSocketService] Error parsing data:", error) | ||
| } | ||
| } | ||
|
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| this.socket.onerror = () => { | ||
| console.error("[WebSocketService] WebSocket Error: " + this.url); | ||
| } | ||
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| this.socket.onclose = () => { | ||
| } | ||
| } | ||
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| disconnect(): void { | ||
| if (this.socket && this.socket.readyState === WebSocket.OPEN) { | ||
| this.socket.close(); | ||
| } | ||
| } | ||
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| getMetrics() { | ||
| return this.messagesSubject.asObservable(); | ||
| } | ||
|
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| ngOnDestroy() { | ||
| this.disconnect(); | ||
| } | ||
|
|
||
| } |
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