feat(health): switch health endpoint from Info to Debug log calls on …

…success

Also add new global `--log-level` so debug logging can be turend on.

cmd/cmd.go

@@ -3,22 +3,38 @@ package cmd
 
 import (
 	"fmt"
+	"log/slog"
 
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )
 
 // NewRootCommand creates a new root command for the zadara-exporter.
-func NewRootCommand(version string, commit string) *cobra.Command {
+func NewRootCommand(version, commit string) *cobra.Command {
 	cmd := &cobra.Command{
 		Use:     "zadara-exporter",
 		Short:   "Zadara exporter for Prometheus",
 		Version: fmt.Sprintf("%s (%s)", version, commit),
+		PersistentPreRunE: func(_ *cobra.Command, _ []string) error {
+			levelStr := viper.GetString("log-level")
+
+			level := slog.LevelInfo
+			err := level.UnmarshalText([]byte(levelStr))
+			if err != nil {
+				return fmt.Errorf("failed to parse log level: %w", err)
+			}
+
+			slog.SetLogLoggerLevel(level)
+
+			return nil
+		},
 	}
 
 	cmd.PersistentFlags().String("config", "", "The path to the configuration file")
+	cmd.PersistentFlags().String("log-level", "info", "The path to the configuration file")
 
 	must(viper.BindPFlag("config", cmd.PersistentFlags().Lookup("config")))
+	must(viper.BindPFlag("log-level", cmd.PersistentFlags().Lookup("log-level")))
 
 	cmd.AddCommand(NewServerCommand())
 

health/health.go

@@ -28,7 +28,7 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	var couldNotConnect bool
 
 	for _, target := range targets {
-		slog.Info("Checking target", "target", target.Name)
+		slog.Debug("Checking target", "target", target.Name)
 		client := commandcenter.NewClient(target)
 
 		_, err := client.GetStores(r.Context(), target.CloudName)