log: change log level to reduce the noise logs

1. Change some logs level to reduce the noise.
2. Wrap the go-redis.Nil error as ErrNotFound to avoid confusing

Signed-off-by: chlins <chenyuzh@vmware.com>

src/cmd/exporter/main.go

@@ -36,16 +36,7 @@ func main() {
 	viper.SetEnvPrefix("harbor")
 	viper.AutomaticEnv()
 	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
-	connMaxLifetime, err := time.ParseDuration(viper.GetString("database.conn_max_lifetime"))
-	if err != nil {
-		log.Errorf("Failed to parse database.conn_max_lifetime: %v", err)
-		connMaxLifetime = 5 * time.Minute
-	}
-	connMaxIdleTime, err := time.ParseDuration(viper.GetString("database.conn_max_idle_time"))
-	if err != nil {
-		log.Errorf("Failed to parse database.conn_max_idle_time: %v", err)
-		connMaxIdleTime = 0
-	}
+
 	dbCfg := &models.Database{
 		Type: "postgresql",
 		PostGreSQL: &models.PostGreSQL{
@@ -57,8 +48,8 @@ func main() {
 			SSLMode:         viper.GetString("database.sslmode"),
 			MaxIdleConns:    viper.GetInt("database.max_idle_conns"),
 			MaxOpenConns:    viper.GetInt("database.max_open_conns"),
-			ConnMaxLifetime: connMaxLifetime,
-			ConnMaxIdleTime: connMaxIdleTime,
+			ConnMaxLifetime: getConnMaxLifetime(viper.GetString("database.conn_max_lifetime")),
+			ConnMaxIdleTime: getConnMaxIdleTime(viper.GetString("database.conn_max_idle_time")),
 		},
 	}
 	if err := dao.InitDatabase(dbCfg); err != nil {
@@ -109,3 +100,33 @@ func main() {
 		os.Exit(1)
 	}
 }
+
+func getConnMaxLifetime(duration string) time.Duration {
+	// set conn max life time, 5m by default
+	connMaxLifetime := 5 * time.Minute
+	if duration != "" {
+		maxLifetime, err := time.ParseDuration(duration)
+		if err == nil {
+			connMaxLifetime = maxLifetime
+		} else {
+			log.Warningf("Failed to parse database.conn_max_lifetime, use default value: %s, err: %v", connMaxLifetime, err)
+		}
+	}
+
+	return connMaxLifetime
+}
+
+func getConnMaxIdleTime(duration string) time.Duration {
+	// set conn max idle time, 0 by default
+	connMaxIdleTime := time.Duration(0)
+	if duration != "" {
+		maxIdleTime, err := time.ParseDuration(duration)
+		if err == nil {
+			connMaxIdleTime = maxIdleTime
+		} else {
+			log.Warningf("Failed to parse database.conn_max_idle_time, use default value: %s, err: %v", connMaxIdleTime, err)
+		}
+	}
+
+	return connMaxIdleTime
+}

src/core/session/session.go

@@ -16,13 +16,12 @@ package session
 
 import (
 	"context"
+	"errors"
 	"net/http"
-	"strings"
 	"sync"
 	"time"
 
 	"github.com/beego/beego/v2/server/web/session"
-	goredis "github.com/go-redis/redis/v8"
 
 	"github.com/goharbor/harbor/src/lib/cache"
 	"github.com/goharbor/harbor/src/lib/cache/redis"
@@ -131,7 +130,7 @@ func (rp *Provider) SessionRead(ctx context.Context, sid string) (session.Store,
 		ctx = context.TODO()
 	}
 	err := rp.c.Fetch(ctx, sid, &kv)
-	if err != nil && !strings.Contains(err.Error(), goredis.Nil.Error()) {
+	if err != nil && !errors.Is(err, cache.ErrNotFound) {
 		return nil, err
 	}
 
@@ -166,7 +165,7 @@ func (rp *Provider) SessionRegenerate(ctx context.Context, oldsid, sid string) (
 		} else {
 			kv := make(map[interface{}]interface{})
 			err := rp.c.Fetch(ctx, sid, &kv)
-			if err != nil && !strings.Contains(err.Error(), goredis.Nil.Error()) {
+			if err != nil && !errors.Is(err, cache.ErrNotFound) {
 				return nil, err
 			}
 

src/lib/cache/redis/redis.go

@@ -58,6 +58,10 @@ func (c *Cache) Fetch(ctx context.Context, key string, value interface{}) error
 		// convert internal or Timeout error to be ErrNotFound
 		// so that the caller can continue working without breaking
 		// return cache.ErrNotFound
+		if err == redis.Nil {
+			return cache.ErrNotFound
+		}
+
 		return fmt.Errorf("%w:%v", cache.ErrNotFound, err)
 	}
 

src/pkg/notifier/notifier.go

@@ -217,7 +217,7 @@ func (nw *NotificationWatcher) Notify(ctx context.Context, notification Notifica
 					// Currently, we just log the error
 					log.Errorf("Error occurred when triggering handler %s of topic %s: %s\n", reflect.TypeOf(hd).String(), notification.Topic, err.Error())
 				} else {
-					log.Infof("Handle notification with Handler '%s' on topic '%s': %+v\n", hd.Name(), notification.Topic, notification.Value)
+					log.Debugf("Handle notification with Handler '%s' on topic '%s': %+v\n", hd.Name(), notification.Topic, notification.Value)
 				}
 			}()
 		}(h, handlerChan)

src/server/registry/manifest.go

@@ -93,7 +93,7 @@ func getManifest(w http.ResponseWriter, req *http.Request) {
 				_, _ = buffer.Write(manifest)
 			}
 		} else {
-			log.Warningf("failed to get manifest from cache, error: %v", err)
+			log.Debugf("failed to get manifest from cache, will fallback to registry, error: %v", err)
 			// only write cache when request is GET because HEAD request resp
 			// body is empty.
 			if req.Method == http.MethodGet {