init

2026-03-11 15:01:20 +05:30
commit d8f4a77657
30 changed files with 3164 additions and 0 deletions
--- a/src/main.go
+++ b/src/main.go
@@ -0,0 +1,66 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"log/slog"
+	"net/http"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+
+	"pve_local_exporter/internal/collector"
+	"pve_local_exporter/internal/config"
+)
+
+var version string
+
+func main() {
+	cfg := config.Parse()
+
+	if cfg.ShowVersion {
+		fmt.Println(version)
+		return
+	}
+
+	level := slog.LevelInfo
+	switch strings.ToUpper(cfg.LogLevel) {
+	case "DEBUG":
+		level = slog.LevelDebug
+	case "WARNING", "WARN":
+		level = slog.LevelWarn
+	case "ERROR", "CRITICAL":
+		level = slog.LevelError
+	}
+	slog.SetDefault(slog.New(slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{Level: level})))
+
+	reg := prometheus.NewRegistry()
+	c := collector.New(cfg)
+	reg.MustRegister(c)
+
+	mux := http.NewServeMux()
+	mux.Handle("/metrics", promhttp.HandlerFor(reg, promhttp.HandlerOpts{}))
+	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte(`<html><body><a href="/metrics">Metrics</a></body></html>`))
+	})
+
+	addr := fmt.Sprintf("%s:%d", cfg.Host, cfg.Port)
+	server := &http.Server{Addr: addr, Handler: mux}
+
+	sigCh := make(chan os.Signal, 1)
+	signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
+	go func() {
+		<-sigCh
+		slog.Info("shutting down")
+		server.Close()
+	}()
+
+	log.Printf("listening on %s", addr)
+	if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+		log.Fatal(err)
+	}
+}