143 lines
3.5 KiB
Go
143 lines
3.5 KiB
Go
package core
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import (
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"fmt"
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"github.com/gofiber/fiber/v2"
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ws "github.com/gofiber/websocket/v2"
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"github.com/gorilla/websocket"
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"html/template"
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"log"
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"net/http"
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)
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func echo(sub Subscriber) func(w http.ResponseWriter, r *http.Request) {
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var upgrader = websocket.Upgrader{} // use default options
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return func(w http.ResponseWriter, r *http.Request) {
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fmt.Println("upgrading to ws")
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c, err := upgrader.Upgrade(w, r, nil)
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if err != nil {
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log.Print("upgrade:", err)
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return
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}
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//defer c.Close()
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go func() {
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for {
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if _, _, err := c.NextReader(); err != nil {
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c.Close()
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break
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}
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}
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}()
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dispatcherId, channel := sub.Subscribe()
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defer sub.Unsubscribe(dispatcherId)
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for {
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//log.Println("")
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//if err != nil {
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// log.Println("read:", err)
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// break
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//}
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cmsg := <-channel
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err = c.WriteMessage(websocket.TextMessage, []byte(cmsg))
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if err != nil {
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log.Println("write:", err)
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break
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}
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}
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}
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}
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func home(w http.ResponseWriter, r *http.Request) {
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//var homeTemplate = template.Must(template.NewDispatcher("").ParseFiles("index.html"))
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tpl, err := template.ParseFiles("static/index.html")
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if err != nil {
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log.Fatalln(err)
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}
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err = tpl.Execute(w, "ws://"+r.Host+"/echo")
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if err != nil {
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log.Fatalln(err)
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}
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}
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func HttpListenAndServe(sub Subscriber, httpPort string) {
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log.Println("register websocket handler")
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http.HandleFunc("/echo", echo(sub))
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log.Println("register index handler")
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http.HandleFunc("/", home)
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log.Println("register static file handler")
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http.Handle("/static/", http.FileServer(http.Dir(".")))
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log.Println("start server")
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log.Fatal(http.ListenAndServe(httpPort, nil))
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}
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func FiberListen(sub Subscriber) {
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app := fiber.New()
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app.Static("/static", "static")
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// Application Main Page
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app.Get("/", fiberHomeHandler)
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// Websocket
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app.Get("/ws", ws.New(createFiberWebsocketHandler(sub)))
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// TODO: Get all SerialPorts
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app.Get("/serialports")
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// Tracking persistence controls
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trackings := app.Group("/trackings")
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trackings.Get("/") // Get all trackings Metadata
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trackings.Post("/") // Initialize new tracking, open websocket and prepare for automatic recording. Toggle ?serial=true and ?tcp=true. Returns trackingId
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trackings.Patch("/") // Starts recording
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trackings.Put("/") // Stops current recording. Returns trackingId if record was successful
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trackings.Delete("/") // Stops websocket connection, pipelines and collectors
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trackings.Get("/:trackingId") // Gets Tracking Metadata and loads sensorRecords from database.
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trackings.Post("/:trackingId") // Starts Replay.
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trackings.Patch("/:trackingId") // Pauses Replay.
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trackings.Put("/:trackingId") // Stops Replay.
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trackings.Delete("/:trackingId") // Deletes Tracking from database
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log.Fatal(app.Listen(":3011"))
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}
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func createFiberWebsocketHandler(s Subscriber) func(conn *ws.Conn) {
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return func(c *ws.Conn) {
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// Handle and discard inbound messages
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go func() {
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for {
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if _, _, err := c.NextReader(); err != nil {
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c.Close()
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break
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}
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}
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}()
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dispatcherId, channel := s.Subscribe()
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defer s.Unsubscribe(dispatcherId)
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for {
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cmsg := <-channel
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err := c.WriteMessage(ws.TextMessage, []byte(cmsg))
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if err != nil {
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log.Println("write:", err)
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break
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}
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}
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}
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}
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func fiberHomeHandler(c *fiber.Ctx) error {
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tpl, err := template.ParseFiles("static/index.html")
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if err != nil {
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return err
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}
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err = tpl.Execute(c, "ws://"+c.Hostname()+"/ws")
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if err != nil {
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return err
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}
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return nil
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}
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