diff --git a/backend.light/.gitignore b/backend.light/.gitignore new file mode 100644 index 0000000..267e084 --- /dev/null +++ b/backend.light/.gitignore @@ -0,0 +1,5 @@ +static +DB +backend +Heat +.vscode diff --git a/backend.light/go.mod b/backend.light/go.mod new file mode 100644 index 0000000..95594c1 --- /dev/null +++ b/backend.light/go.mod @@ -0,0 +1,37 @@ +module backend.light + +go 1.21.4 + +require ( + github.com/gin-contrib/cors v1.5.0 + github.com/gin-gonic/gin v1.9.1 +) + +require ( + github.com/bytedance/sonic v1.10.1 // indirect + github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect + github.com/chenzhuoyu/iasm v0.9.0 // indirect + github.com/gabriel-vasile/mimetype v1.4.2 // indirect + github.com/gin-contrib/sse v0.1.0 // indirect + github.com/go-playground/locales v0.14.1 // indirect + github.com/go-playground/universal-translator v0.18.1 // indirect + github.com/go-playground/validator/v10 v10.15.5 // indirect + github.com/goccy/go-json v0.10.2 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/klauspost/cpuid/v2 v2.2.5 // indirect + github.com/kr/text v0.2.0 // indirect + github.com/leodido/go-urn v1.2.4 // indirect + github.com/mattn/go-isatty v0.0.19 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/pelletier/go-toml/v2 v2.1.0 // indirect + github.com/twitchyliquid64/golang-asm v0.15.1 // indirect + github.com/ugorji/go/codec v1.2.11 // indirect + golang.org/x/arch v0.5.0 // indirect + golang.org/x/crypto v0.14.0 // indirect + golang.org/x/net v0.16.0 // indirect + golang.org/x/sys v0.13.0 // indirect + golang.org/x/text v0.13.0 // indirect + google.golang.org/protobuf v1.31.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) diff --git a/backend.light/go.sum b/backend.light/go.sum new file mode 100644 index 0000000..8baca90 --- /dev/null +++ b/backend.light/go.sum @@ -0,0 +1,102 @@ +github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM= +github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM= +github.com/bytedance/sonic v1.10.1 h1:7a1wuFXL1cMy7a3f7/VFcEtriuXQnUBhtoVfOZiaysc= +github.com/bytedance/sonic v1.10.1/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4= +github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY= +github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk= +github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d h1:77cEq6EriyTZ0g/qfRdp61a3Uu/AWrgIq2s0ClJV1g0= +github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d/go.mod h1:8EPpVsBuRksnlj1mLy4AWzRNQYxauNi62uWcE3to6eA= +github.com/chenzhuoyu/iasm v0.9.0 h1:9fhXjVzq5hUy2gkhhgHl95zG2cEAhw9OSGs8toWWAwo= +github.com/chenzhuoyu/iasm v0.9.0/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog= +github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/gabriel-vasile/mimetype v1.4.2 h1:w5qFW6JKBz9Y393Y4q372O9A7cUSequkh1Q7OhCmWKU= +github.com/gabriel-vasile/mimetype v1.4.2/go.mod h1:zApsH/mKG4w07erKIaJPFiX0Tsq9BFQgN3qGY5GnNgA= +github.com/gin-contrib/cors v1.5.0 h1:DgGKV7DDoOn36DFkNtbHrjoRiT5ExCe+PC9/xp7aKvk= +github.com/gin-contrib/cors v1.5.0/go.mod h1:TvU7MAZ3EwrPLI2ztzTt3tqgvBCq+wn8WpZmfADjupI= +github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE= +github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI= +github.com/gin-gonic/gin v1.9.1 h1:4idEAncQnU5cB7BeOkPtxjfCSye0AAm1R0RVIqJ+Jmg= +github.com/gin-gonic/gin v1.9.1/go.mod h1:hPrL7YrpYKXt5YId3A/Tnip5kqbEAP+KLuI3SUcPTeU= +github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s= +github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4= +github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA= +github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY= +github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY= +github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY= +github.com/go-playground/validator/v10 v10.15.5 h1:LEBecTWb/1j5TNY1YYG2RcOUN3R7NLylN+x8TTueE24= +github.com/go-playground/validator/v10 v10.15.5/go.mod h1:9iXMNT7sEkjXb0I+enO7QXmzG6QCsPWY4zveKFVRSyU= +github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU= +github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I= +github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk= +github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU= +github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg= +github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM= +github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo= +github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg= +github.com/klauspost/cpuid/v2 v2.2.5 h1:0E5MSMDEoAulmXNFquVs//DdoomxaoTY1kUhbc/qbZg= +github.com/klauspost/cpuid/v2 v2.2.5/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws= +github.com/knz/go-libedit v1.10.1/go.mod h1:MZTVkCWyz0oBc7JOWP3wNAzd002ZbM/5hgShxwh4x8M= +github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0= +github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk= +github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY= +github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE= +github.com/leodido/go-urn v1.2.4 h1:XlAE/cm/ms7TE/VMVoduSpNBoyc2dOxHs5MZSwAN63Q= +github.com/leodido/go-urn v1.2.4/go.mod h1:7ZrI8mTSeBSHl/UaRyKQW1qZeMgak41ANeCNaVckg+4= +github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA= +github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y= +github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q= +github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg= +github.com/modern-go/concurrent 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+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50= +rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4= diff --git a/backend.light/http.go b/backend.light/http.go new file mode 100644 index 0000000..3e78938 --- /dev/null +++ b/backend.light/http.go @@ -0,0 +1,78 @@ +package main + +import ( + "os" + + "github.com/gin-contrib/cors" + "github.com/gin-gonic/gin" +) + +type App struct { + Engine *gin.Engine + Stream *SseStream +} + +func InitHttp() *App { + + app := &App{ + Engine: nil, + Stream: nil, + } + + app.Stream = InitSse() + + app.Engine = gin.Default() + app.Engine.Use(cors.Default()) + + app.RegisterWebRoutes() + app.RegisterApiRoutes() + + return app +} + +func (app *App) Run() { + + port := os.Getenv("PORT") + + if port == "" { + port = "8080" + } + + app.Engine.Run(":" + port) +} + +func (app *App) RegisterWebRoutes() { + + display_h := app.Engine.Group("/display-h") + display_h.Static("/", "./static/display-h") + + display_v := app.Engine.Group("/display-v") + display_v.Static("/", "./static/display-v") + + display_m := app.Engine.Group("/display-m") + display_m.Static("/", "./static/display-m") + + priority := app.Engine.Group("/priority") + priority.Static("/", "./static/priority") + + sapp := app.Engine.Group("/_app") + sapp.Static("/", "./static/_app") + + static := app.Engine.Group("/static") + static.Static("/", "./static/static") + + app.Engine.StaticFile("/", "./static/index.html") + app.Engine.StaticFile("/favicon.png", "./static/favicon.png") + + app.Engine.ForwardedByClientIP = true + app.Engine.SetTrustedProxies([]string{"127.0.0.1"}) +} + +func (app *App) RegisterApiRoutes() { + + api := app.Engine.Group("/api") + + api.GET("/sse", app.Stream.SseHeadersMiddleware(), app.Stream.Stream) + api.GET("/priority", app.GetPriority) + api.POST("/priority", app.SetPriority) +} diff --git a/backend.light/ssestream.go b/backend.light/ssestream.go new file mode 100644 index 0000000..8e05570 --- /dev/null +++ b/backend.light/ssestream.go @@ -0,0 +1,130 @@ +package main + +import ( + "crypto/sha256" + "fmt" + "io" + "log" + "net/http" + "slices" + "strconv" + "strings" + + "github.com/gin-gonic/gin" +) + +var events = []string{"message", "timer", "priority", "cmd"} + +type Message struct { + Event string `json:"event"` + Data string `json:"data"` + Id string `json:"id"` +} + +type ClientChan chan Message + +type Client struct { + Id string `json:"id"` + Ip string `json:"ip"` + Chan ClientChan `json:"chan"` + Events []string `json:"events"` +} + +type SseStream struct { + Clients []Client `json:"clients"` + MsgId map[string]int `json:"msgid"` + Events []string `json:"events"` +} + +func InitSse() *SseStream { + sse := &SseStream{ + Clients: make([]Client, 0), + MsgId: map[string]int{}, + Events: events, + } + + for i := range events { + sse.MsgId[events[i]] = 0 + } + + return sse +} + +func (sse *SseStream) SseHeadersMiddleware() gin.HandlerFunc { + return func(c *gin.Context) { + c.Writer.Header().Set("Content-Type", "text/event-stream") + c.Writer.Header().Set("Cache-Control", "no-cache") + c.Writer.Header().Set("Connection", "keep-alive") + c.Writer.Header().Set("Transfer-Encoding", "chunked") + c.Next() + } +} + +func (sse *SseStream) Stream(c *gin.Context) { + client := &Client{ + Ip: c.Request.RemoteAddr, + Chan: make(ClientChan), + Events: c.QueryArray("event"), + } + + log.Printf("events: %+v", client.Events) + + client.Id = generateClientId(client.Ip, client.Events, 8) + + sse.AddClient(*client) + + defer func() { + sse.RemoveClient(client) + close(client.Chan) + log.Printf("Client %s disconnected", client.Ip) + }() + + log.Printf("Client %s connected", client.Ip) + + c.Stream(func(w io.Writer) bool { + msg, ok := <-client.Chan + if !ok { + return false + } + c.SSEvent(msg.Event, msg) + return true + }) +} + +func (sse *SseStream) AddClient(client Client) { + sse.Clients = append(sse.Clients, client) +} + +func (sse *SseStream) RemoveClient(client *Client) { + for i, c := range sse.Clients { + if c.Id == client.Id { + sse.Clients = append(sse.Clients[:i], sse.Clients[i+1:]...) + return + } + } +} + +func (sse *SseStream) Send(msg Message) { + sse.MsgId[msg.Event]++ + msg.Id = strconv.Itoa(sse.MsgId[msg.Event]) + for _, client := range sse.Clients { + if slices.Contains(client.Events, msg.Event) || slices.Contains(client.Events, "*") { + client.Chan <- msg + log.Printf("sent: %+v -> %+v", msg, client.Ip) + } + } +} + +func (sse *SseStream) SendMsg(c *gin.Context) { + var msg Message + c.ShouldBind(&msg) + sse.Send(msg) + c.JSON(http.StatusOK, gin.H{"status": "msg"}) +} + +func generateClientId(ip string, events []string, len int) string { + str := ip + strings.Join(events, "|") + id := sha256.Sum256([]byte(str)) + + return fmt.Sprintf("%X", id)[0:len] +} diff --git a/backend.light/surfers.go b/backend.light/surfers.go new file mode 100644 index 0000000..d8f9f62 --- /dev/null +++ b/backend.light/surfers.go @@ -0,0 +1,7 @@ +package main + +type Surfers struct { + Name string `json:"name"` + Color string `json:"color"` + Priority string `json:"priority"` +}