c := s[i]
			if 'a' <= c && c <= 'z' {
				c -= 'a' - 'A'
			}
			b[i] = c
		}
		return b
	}
	return Map(unicode.ToUpper, s)
}

// ToLower returns a copy of the byte slice s with all Unicode letters mapped to
// their lower case.
func ToLower(s []byte) []byte {
	isASCII, hasUpper := true, false
	for i := 0; i < len(s); i++ {
		c := s[i]
		if c >= utf8.RuneSelf {
			isASCII = false
			break
		}

	Event     []event.Event
	EventTime string
}

// Validate RedisArgs fields
func (r RedisArgs) Validate() error {
	if !r.Enable {
		return nil
	}

	if r.Format != "" {
		f := strings.ToLower(r.Format)
		if f != event.NamespaceFormat && f != event.AccessFormat {
			return fmt.Errorf("unrecognized format")
		}
	}

	if r.Key == "" {
		return fmt.Errorf("empty key")
	}

	if r.QueueDir != "" {

	MaxOpenConnections int      `json:"maxOpenConnections"`
}

// Validate MySQLArgs fields
func (m MySQLArgs) Validate() error {
	if !m.Enable {
		return nil
	}

	if m.Format != "" {
		f := strings.ToLower(m.Format)
		if f != event.NamespaceFormat && f != event.AccessFormat {
			return fmt.Errorf("unrecognized format")
		}
	}

	if m.Table == "" {
		return fmt.Errorf("table unspecified")
	}

	if s3Err == ErrNone && retentionMode.Valid() {
		metadata[strings.ToLower(xhttp.AmzObjectLockMode)] = string(retentionMode)
		metadata[strings.ToLower(xhttp.AmzObjectLockRetainUntilDate)] = amztime.ISO8601Format(retentionDate.UTC())
	}
	if s3Err == ErrNone && legalHold.Status.Valid() {
		metadata[strings.ToLower(xhttp.AmzObjectLockLegalHold)] = string(legalHold.Status)
	}
	if s3Err != ErrNone {

	if field.IgnoreMigration {
		return nil
	}

	// found, smart migrate
	fullDataType := strings.TrimSpace(strings.ToLower(m.DB.Migrator().FullDataTypeOf(field).SQL))
	realDataType := strings.ToLower(columnType.DatabaseTypeName())

	var (
		alterColumn bool
		isSameType  = fullDataType == realDataType
	)

	if !field.PrimaryKey {
		// check type

func (a ElasticsearchArgs) Validate() error {
	if !a.Enable {
		return nil
	}
	if a.URL.IsEmpty() {
		return errors.New("empty URL")
	}
	if a.Format != "" {
		f := strings.ToLower(a.Format)
		if f != event.NamespaceFormat && f != event.AccessFormat {
			return errors.New("format value unrecognized")
		}
	}
	if a.Index == "" {
		return errors.New("empty index value")
	}

	var filteredAlgos []string
	found := false
	for _, algo := range want {
		if len(algo) == 0 {
			continue
		}
		for _, allowedAlgo := range allowed {
			algo := strings.ToLower(strings.TrimSpace(algo))
			if algo == allowedAlgo {
				filteredAlgos = append(filteredAlgos, algo)
				found = true
				break
			}
		}
		if !found {

}

// Return canonical headers.
func canonicalizedAmzHeadersV2(headers http.Header) string {
	var keys []string
	keyval := make(map[string]string, len(headers))
	for key := range headers {
		lkey := strings.ToLower(key)
		if !strings.HasPrefix(lkey, "x-amz-") {
			continue
		}
		keys = append(keys, lkey)
		keyval[lkey] = strings.Join(headers[key], ",")
	}
	sort.Strings(keys)
	var canonicalHeaders []string

  # List available analyzers
  istioctl analyze -L`,
		RunE: func(cmd *cobra.Command, args []string) error {
			msgOutputFormat = strings.ToLower(msgOutputFormat)
			_, ok := formatting.MsgOutputFormats[msgOutputFormat]
			if !ok {
				return util.CommandParseError{
					Err: fmt.Errorf("%s not a valid option for format. See istioctl analyze --help", msgOutputFormat),

				return
			}
		}
	}

	for idx, ownField := range ownForeignFields {
		joinFieldName := cases.Title(language.Und, cases.NoLower).String(schema.Name) + ownField.Name
		if len(joinForeignKeys) > idx {
			joinFieldName = cases.Title(language.Und, cases.NoLower).String(joinForeignKeys[idx])
		}

		ownFieldsMap[joinFieldName] = ownField
		fieldsMap[joinFieldName] = ownField