Initial import: nasmon health monitor, split out of home_nas

Go service (nasmon/) plus nfpm packaging (packaging/), carried over from the home_nas monorepo. Adds rpm packaging alongside the existing deb build (Fedora/RHEL/Rocky dependency names via nfpm overrides, per-format systemd unit path, dpkg+rpm-compatible maintainer scripts) and a Gitea Actions workflow that builds both formats on every push. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-19 10:24:34 +03:00
commit 09159a5f31
61 changed files with 7882 additions and 0 deletions
@@ -0,0 +1,84 @@
+// nasmon — lightweight NAS health monitor: web dashboard + SMART/ZFS alerts by e-mail.
+package main
+
+import (
+	"context"
+	"errors"
+	"flag"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"path/filepath"
+	"syscall"
+	"time"
+
+	"nasmon/internal/alert"
+	"nasmon/internal/config"
+	"nasmon/internal/history"
+	"nasmon/internal/sched"
+	"nasmon/internal/shares"
+	"nasmon/internal/store"
+	"nasmon/internal/web"
+)
+
+var version = "dev"
+
+func main() {
+	listen := flag.String("listen", ":8090", "HTTP listen address")
+	dataDir := flag.String("data", "/var/lib/nasmon", "directory for the SQLite database")
+	cfgPath := flag.String("config", "/etc/nasmon/config.json", "settings file (created on first save)")
+	showVer := flag.Bool("version", false, "print version and exit")
+	flag.Parse()
+	if *showVer {
+		fmt.Println("nasmon", version)
+		return
+	}
+	log.SetFlags(log.LstdFlags | log.Lmsgprefix)
+
+	cfg, err := config.Load(*cfgPath)
+	if err != nil {
+		log.Fatalf("config: %v", err)
+	}
+	if err := os.MkdirAll(*dataDir, 0o750); err != nil {
+		log.Fatalf("data dir: %v", err)
+	}
+	st, err := store.Open(filepath.Join(*dataDir, "nasmon.db"))
+	if err != nil {
+		log.Fatalf("database: %v", err)
+	}
+	defer st.Close()
+
+	sh, err := shares.Load(filepath.Join(filepath.Dir(*cfgPath), "shares.json"))
+	if err != nil {
+		log.Fatalf("shares config: %v", err)
+	}
+
+	ring := history.New(24 * 60 * 6) // 24 h at 10 s
+	am := &alert.Manager{Store: st, Config: cfg, Send: alert.SendMail}
+	sc := sched.New(cfg, st, ring, am, version)
+	sc.LoadCachedSmart()
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+	go sc.Run(ctx)
+
+	srv := &http.Server{
+		Addr:              *listen,
+		Handler:           web.New(cfg, st, ring, sc, sh),
+		ReadHeaderTimeout: 10 * time.Second,
+	}
+	go func() {
+		log.Printf("nasmon %s listening on %s", version, *listen)
+		if err := srv.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
+			log.Fatalf("http: %v", err)
+		}
+	}()
+
+	<-ctx.Done()
+	log.Print("shutting down")
+	shutdownCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	_ = srv.Shutdown(shutdownCtx)
+}