Update On Sun Jul 13 20:36:32 CEST 2025

echo/internal/metrics/node.go

@@ -2,22 +2,38 @@ package metrics
 
 import (
 	"fmt"
+	"log/slog"
+	"os"
+	"strings"
 
 	"github.com/Ehco1996/ehco/internal/config"
 	"github.com/alecthomas/kingpin/v2"
 	"github.com/prometheus/client_golang/prometheus"
-	"github.com/prometheus/common/promlog"
 	"github.com/prometheus/node_exporter/collector"
 )
 
-func RegisterNodeExporterMetrics(cfg *config.Config) error {
-	level := &promlog.AllowedLevel{}
-	// mute node_exporter logger
-	if err := level.Set("error"); err != nil {
-		return err
+// zapLevelToSlogLevel converts zap log level string to slog.Level
+func zapLevelToSlogLevel(zapLevel string) slog.Level {
+	switch strings.ToLower(zapLevel) {
+	case "debug":
+		return slog.LevelDebug
+	case "info":
+		return slog.LevelInfo
+	case "warn", "warning":
+		return slog.LevelWarn
+	case "error":
+		return slog.LevelError
+	default:
+		return slog.LevelInfo
 	}
+}
+
+func RegisterNodeExporterMetrics(cfg *config.Config) error {
+	slogLevel := zapLevelToSlogLevel(cfg.LogLeveL)
+	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
+		Level: slogLevel,
+	}))
 
-	logger := promlog.New(&promlog.Config{Level: level})
 	// node_exporter relay on `kingpin` to enable default node collector
 	// see https://github.com/prometheus/node_exporter/pull/2463
 	if _, err := kingpin.CommandLine.Parse([]string{}); err != nil {

echo/internal/web/handler_page.go

@@ -16,7 +16,7 @@ const defaultPageSize = 20
 func MakeIndexF() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		zap.S().Named("web").Infof("index call from %s", r.RemoteAddr)
-		fmt.Fprintf(w, "access from remote ip: %s \n", r.RemoteAddr)
+		_, _ = fmt.Fprintf(w, "access from remote ip: %s \n", r.RemoteAddr)
 	}
 }