97 lines
1.9 KiB
Go
97 lines
1.9 KiB
Go
package hub
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import (
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"log"
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"net/http"
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"sync"
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"github.com/gorilla/websocket"
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"websocket-relay/internal/metrics"
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)
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var upgrader = websocket.Upgrader{
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CheckOrigin: func(r *http.Request) bool { return true },
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}
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type Hub struct {
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clients map[*websocket.Conn]bool
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broadcast chan []byte
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register chan *websocket.Conn
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unregister chan *websocket.Conn
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mu sync.RWMutex
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}
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func New() *Hub {
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return &Hub{
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clients: make(map[*websocket.Conn]bool),
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broadcast: make(chan []byte),
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register: make(chan *websocket.Conn),
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unregister: make(chan *websocket.Conn),
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}
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}
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func (h *Hub) Run() {
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for {
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select {
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case conn := <-h.register:
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h.mu.Lock()
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h.clients[conn] = true
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h.mu.Unlock()
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metrics.ConnectedClients.Set(float64(len(h.clients)))
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metrics.ConnectionsTotal.Inc()
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log.Printf("Client connected. Total: %d", len(h.clients))
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case conn := <-h.unregister:
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h.mu.Lock()
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if _, ok := h.clients[conn]; ok {
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delete(h.clients, conn)
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conn.Close()
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}
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h.mu.Unlock()
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metrics.ConnectedClients.Set(float64(len(h.clients)))
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metrics.DisconnectionsTotal.Inc()
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log.Printf("Client disconnected. Total: %d", len(h.clients))
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case message := <-h.broadcast:
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metrics.MessagesTotal.Inc()
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h.mu.RLock()
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for conn := range h.clients {
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if err := conn.WriteMessage(websocket.TextMessage, message); err != nil {
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delete(h.clients, conn)
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conn.Close()
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}
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}
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h.mu.RUnlock()
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}
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}
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}
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func (h *Hub) HandleWebSocket(w http.ResponseWriter, r *http.Request) {
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conn, err := upgrader.Upgrade(w, r, nil)
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if err != nil {
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log.Printf("WebSocket upgrade error: %v", err)
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return
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}
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h.register <- conn
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go func() {
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defer func() {
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h.unregister <- conn
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}()
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for {
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_, message, err := conn.ReadMessage()
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if err != nil {
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break
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}
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h.broadcast <- message
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}
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}()
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}
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func (h *Hub) ClientCount() int {
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h.mu.RLock()
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defer h.mu.RUnlock()
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return len(h.clients)
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} |