TMCandClaude Opus 5.5
9d6a921c34
CI / build (push) Successful in 30s
Apps opt in with sema.dashboard.* labels in their own compose file. The primary reads its host's containers through a read-only socket proxy, follows Docker events, and merges in what the agent on the second host reports. Icons come from the icon label, the dashboard-icons set or the app's favicon, with a letter as the fallback. Go with only the standard library, a distroless image, and a Gitea Actions workflow copied from FiMa's: checks in the Dockerfile's check stage, a Trivy scan, and a push to git.mariosem.es/msemes/hoda. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
117 lines
3.0 KiB
Go
117 lines
3.0 KiB
Go
// Command hoda runs the HODA homelab dashboard. MODE=primary serves the page
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// and merges apps from agents; MODE=agent only reports its own host's apps.
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package main
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import (
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"context"
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"errors"
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"fmt"
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"log/slog"
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"net/http"
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"os"
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"os/signal"
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"path/filepath"
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"syscall"
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"time"
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"git.mariosem.es/msemes/hoda/internal/apps"
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"git.mariosem.es/msemes/hoda/internal/config"
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"git.mariosem.es/msemes/hoda/internal/discovery"
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"git.mariosem.es/msemes/hoda/internal/docker"
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"git.mariosem.es/msemes/hoda/internal/icons"
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"git.mariosem.es/msemes/hoda/internal/peer"
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"git.mariosem.es/msemes/hoda/internal/server"
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)
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// version is set at build time with -ldflags "-X main.version=...".
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var version = "dev"
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func main() {
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if len(os.Args) > 1 {
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switch os.Args[1] {
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case "healthcheck":
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os.Exit(healthcheck())
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case "version":
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fmt.Println(version)
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return
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default:
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fmt.Fprintf(os.Stderr, "unknown command %q; the commands are healthcheck and version\n", os.Args[1])
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os.Exit(2)
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}
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}
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if err := run(); err != nil {
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fmt.Fprintln(os.Stderr, "hoda:", err)
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os.Exit(1)
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}
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}
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func run() error {
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cfg, err := config.Load()
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if err != nil {
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return err
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}
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log := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: cfg.LogLevel}))
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dc, err := docker.New(cfg.DockerHost)
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if err != nil {
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return err
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}
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ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
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defer stop()
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store := apps.NewStore()
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resolver := icons.New(filepath.Join(cfg.DataDir, "icons"), cfg.IconCDN, cfg.IconRefresh, log)
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go resolver.Run(ctx)
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go discovery.New(dc, store, resolver, cfg.LabelPrefix, cfg.NodeName, cfg.ResyncInterval, log).Run(ctx)
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deps := server.Deps{Store: store, Icons: resolver}
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if len(cfg.Peers) > 0 {
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puller := peer.New(cfg.Peers, cfg.PeerToken, cfg.PeerInterval, store, log)
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go puller.Run(ctx)
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deps.Peers = puller
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}
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srv := &http.Server{
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Addr: ":" + cfg.Port,
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Handler: server.New(cfg, deps, version, log),
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ReadHeaderTimeout: 5 * time.Second,
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IdleTimeout: 2 * time.Minute,
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}
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errc := make(chan error, 1)
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go func() { errc <- srv.ListenAndServe() }()
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log.Info("HODA started", "version", version, "mode", cfg.Mode, "node", cfg.NodeName, "port", cfg.Port, "agents", len(cfg.Peers))
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select {
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case err := <-errc:
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return err
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case <-ctx.Done():
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}
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log.Info("shutting down")
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shutdownCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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if err := srv.Shutdown(shutdownCtx); err != nil && !errors.Is(err, http.ErrServerClosed) {
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return err
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}
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return nil
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}
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// healthcheck backs the image's HEALTHCHECK: distroless has no curl or wget.
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func healthcheck() int {
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port := os.Getenv("PORT")
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if port == "" {
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port = "8080"
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}
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client := http.Client{Timeout: 3 * time.Second}
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resp, err := client.Get("http://127.0.0.1:" + port + "/healthz")
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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return 1
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}
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resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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fmt.Fprintln(os.Stderr, "healthz:", resp.Status)
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return 1
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}
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return 0
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}
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