Initial Proxmox dashboard with host and guest metrics

main.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+const defaultAddress = ":9105"
+
+func main() {
+	address := os.Getenv("DASHBOARD_ADDR")
+	if address == "" {
+		address = defaultAddress
+	}
+
+	collector, err := newCPUCollector(cpuInfoPath, procStatPath)
+	if err != nil {
+		log.Fatalf("Не удалось запустить сборщик CPU: %v", err)
+	}
+
+	server := &http.Server{
+		Addr:              address,
+		Handler:           routes(collector),
+		ReadHeaderTimeout: 5 * time.Second,
+	}
+
+	go func() {
+		log.Printf("Proxmox CPU Dashboard запущен на http://0.0.0.0%s", address)
+		if err := server.ListenAndServe(); !errors.Is(err, http.ErrServerClosed) {
+			log.Fatalf("Ошибка веб-сервера: %v", err)
+		}
+	}()
+
+	stop := make(chan os.Signal, 1)
+	signal.Notify(stop, syscall.SIGINT, syscall.SIGTERM)
+	<-stop
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := server.Shutdown(ctx); err != nil {
+		fmt.Fprintf(os.Stderr, "Ошибка остановки сервера: %v\n", err)
+	}
+}