[#224] Refactor logger tag configuration

Signed-off-by: Pavel Pogodaev <p.pogodaev@yadro.com>

cmd/http-gw/app.go

@@ -114,7 +114,8 @@ type (
 	}
 
 	tagsConfig struct {
-		tagLogs sync.Map
+		tagLogs    sync.Map
+		defaultLvl zap.AtomicLevel
 	}
 
 	logLevelConfig struct {
@@ -134,19 +135,34 @@ func newLogLevel(v *viper.Viper) zap.AtomicLevel {
 }
 
 func newTagsConfig(v *viper.Viper, ll zapcore.Level) *tagsConfig {
-	var t tagsConfig
+	t := tagsConfig{defaultLvl: zap.NewAtomicLevelAt(ll)}
 	if err := t.update(v, ll); err != nil {
 		// panic here is analogue of the similar panic during common log level initialization.
 		panic(err.Error())
 	}
+
 	return &t
 }
 
 func newLogLevelConfig(lvl zap.AtomicLevel, tagsConfig *tagsConfig) *logLevelConfig {
-	return &logLevelConfig{
+	cfg := &logLevelConfig{
 		logLevel:   lvl,
 		tagsConfig: tagsConfig,
 	}
+
+	cfg.setMinLogLevel()
+
+	return cfg
+}
+
+func (l *logLevelConfig) setMinLogLevel() {
+	l.tagsConfig.tagLogs.Range(func(_, value any) bool {
+		v := value.(zapcore.Level)
+		if v < l.logLevel.Level() {
+			l.logLevel.SetLevel(v)
+		}
+		return true
+	})
 }
 
 func (l *logLevelConfig) update(cfg *viper.Viper, log *zap.Logger) {
@@ -159,17 +175,23 @@ func (l *logLevelConfig) update(cfg *viper.Viper, log *zap.Logger) {
 	if err := l.tagsConfig.update(cfg, l.logLevel.Level()); err != nil {
 		log.Warn(logs.TagsLogConfigWontBeUpdated, zap.Error(err), logs.TagField(logs.TagApp))
 	}
+
+	l.setMinLogLevel()
 }
 
 func (t *tagsConfig) LevelEnabled(tag string, tgtLevel zapcore.Level) bool {
 	lvl, ok := t.tagLogs.Load(tag)
 	if !ok {
-		return false
+		return t.defaultLvl.Enabled(tgtLevel)
 	}
 
 	return lvl.(zapcore.Level).Enabled(tgtLevel)
 }
 
+func (t *tagsConfig) DefaultEnabled(lvl zapcore.Level) bool {
+	return t.defaultLvl.Enabled(lvl)
+}
+
 func (t *tagsConfig) update(cfg *viper.Viper, ll zapcore.Level) error {
 	tags, err := fetchLogTagsConfig(cfg, ll)
 	if err != nil {
@@ -194,6 +216,7 @@ func (t *tagsConfig) update(cfg *viper.Viper, ll zapcore.Level) error {
 	for k, v := range tags {
 		t.tagLogs.Store(k, v)
 	}
+	t.defaultLvl.SetLevel(ll)
 
 	return nil
 }