in datahub/util/format.go [30:40]
func isNameValid(name string, minLen, maxLen int) bool {
if name == "" || len(name) > maxLen || len(name) < minLen {
return false
}
for _, c := range name {
if !unicode.IsLetter(c) && !unicode.IsDigit(c) && c != '_' {
return false
}
}
return true
}