gronod
7bed99cc4c
ServeHealth bind failures (common on HAOS when OTBR owns 8080) are logged and ignored. Lookup, firmware, and XMPP stay up. Log each successful listen address so add-on logs show the sockets.
58 lines
1.3 KiB
Go
58 lines
1.3 KiB
Go
package httpx
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import (
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"context"
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"fmt"
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"log/slog"
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"net"
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"net/http"
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"time"
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"git.i3omb.com/gronod/ha-n95-local-control/internal/config"
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)
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// ServeHealth runs the GET /healthz listener until ctx is cancelled.
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func ServeHealth(ctx context.Context, cfg config.Config) error {
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mux := http.NewServeMux()
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mux.HandleFunc("/healthz", healthHandler)
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mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusNotFound)
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})
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addr := net.JoinHostPort(cfg.BindAddress, fmt.Sprintf("%d", cfg.HealthPort))
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ln, err := net.Listen("tcp", addr)
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if err != nil {
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return fmt.Errorf("%s: %w", addr, err)
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}
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slog.Info("health listening", "addr", addr)
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srv := &http.Server{
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Handler: mux,
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ReadHeaderTimeout: 5 * time.Second,
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ReadTimeout: 10 * time.Second,
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WriteTimeout: 10 * time.Second,
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}
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srv.SetKeepAlivesEnabled(false)
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errCh := make(chan error, 1)
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go func() {
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errCh <- srv.Serve(ln)
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}()
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select {
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case <-ctx.Done():
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shutdownCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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_ = srv.Shutdown(shutdownCtx)
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return nil
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case err := <-errCh:
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return err
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}
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}
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func healthHandler(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "text/plain; charset=utf-8")
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write([]byte("ok\n"))
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}
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