penambahan web socket

examples/server/server-initiated-broadcasts.go

@@ -0,0 +1,87 @@
+package main
+
+import (
+	"fmt"
+	"log"
+
+	"api-service/internal/config"
+	"api-service/internal/database"
+	v1 "api-service/internal/routes/v1"
+)
+
+func main() {
+	// Load configuration
+	cfg := config.LoadConfig()
+	cfg.Validate()
+
+	// Initialize database service
+	dbService := database.New(cfg)
+	_ = dbService // Mark as used to avoid compiler warning
+
+	// Create router
+	router := v1.RegisterRoutes(cfg)
+
+	// Get WebSocket handler from the router (this is a simplified example)
+	// In a real application, you'd inject the handler or use dependency injection
+	fmt.Println("WebSocket Server Example with Server-Initiated Broadcasts")
+	fmt.Println("========================================================")
+	fmt.Println()
+	fmt.Println("This example demonstrates how to broadcast messages from the server")
+	fmt.Println("to all connected WebSocket clients.")
+	fmt.Println()
+	fmt.Println("Features demonstrated:")
+	fmt.Println("- Broadcasting messages to all clients")
+	fmt.Println("- Broadcasting to specific rooms")
+	fmt.Println("- Periodic heartbeat messages")
+	fmt.Println("- Simulated data streaming")
+	fmt.Println()
+	fmt.Println("To test:")
+	fmt.Println("1. Start the Go API server: go run cmd/api/main.go")
+	fmt.Println("2. Start the Nuxt 3 client: cd examples/nuxt3-websocket-client && npm run dev")
+	fmt.Println("3. Open browser at http://localhost:3001")
+	fmt.Println("4. You should see connection status and incoming messages")
+	fmt.Println()
+	fmt.Println("The server will automatically send:")
+	fmt.Println("- Welcome message on connection")
+	fmt.Println("- Heartbeat messages every 30 seconds")
+	fmt.Println("- Simulated data every 10 seconds")
+	fmt.Println()
+	fmt.Println("You can also send messages from the client to the server.")
+	fmt.Println()
+
+	// Start server
+	fmt.Println("Starting server on :8080...")
+	log.Fatal(router.Run(":8080"))
+}
+
+// Example of how to broadcast messages programmatically
+// This would typically be called from your business logic
+func exampleBroadcasts() {
+	// This is pseudo-code showing how you would use the WebSocket handler
+	// In a real application, you'd get the handler instance from your dependency injection
+
+	/*
+		// Broadcast to all clients
+		websocketHandler.BroadcastMessage("announcement", map[string]interface{}{
+			"title": "System Update",
+			"message": "The system will be updated in 5 minutes",
+		})
+
+		// Broadcast to a specific room
+		websocketHandler.BroadcastToRoom("admin", "notification", map[string]interface{}{
+			"level": "warning",
+			"message": "Admin action required",
+		})
+
+		// Send to specific client
+		websocketHandler.SendToClient(clientID, "private", map[string]interface{}{
+			"message": "This is a private message",
+		})
+
+		// Start periodic broadcasts
+		websocketHandler.StartPeriodicBroadcast(30 * time.Second)
+
+		// Start simulated data stream
+		websocketHandler.SimulateDataStream()
+	*/
+}