validateLabels validates labels according to the requirements. Labels must follow these rules: - Maximum 64 labels allowed - Keys must start with lowercase letter, then contain only lowercase letters, numbers, underscores, and dashes (max 63 chars) - Values can contain letters, numbers, underscores,
(labels map[string]string)
| 50 | // - Keys must start with lowercase letter, then contain only lowercase letters, numbers, underscores, and dashes (max 63 chars) |
| 51 | // - Values can contain letters, numbers, underscores, and dashes (max 63 chars, can be empty) |
| 52 | func validateLabels(labels map[string]string) error { |
| 53 | if len(labels) > 64 { |
| 54 | return errors.Errorf("maximum 64 labels allowed, got %d", len(labels)) |
| 55 | } |
| 56 | // Key pattern: must start with lowercase letter, then lowercase letters, numbers, underscores, dashes (max 63 chars) |
| 57 | keyPattern := `^[a-z][a-z0-9_-]{0,62}$` |
| 58 | // Value pattern: letters, numbers, underscores, dashes (max 63 chars, can be empty) |
| 59 | valuePattern := `^[a-zA-Z0-9_-]{0,63}$` |
| 60 | keyRegex := regexp.MustCompile(keyPattern) |
| 61 | valueRegex := regexp.MustCompile(valuePattern) |
| 62 | for key, value := range labels { |
| 63 | if !keyRegex.MatchString(key) { |
| 64 | return errors.Errorf("invalid label key %q: must start with lowercase letter and contain only lowercase letters, numbers, underscores, and dashes (max 63 chars)", key) |
| 65 | } |
| 66 | if !valueRegex.MatchString(value) { |
| 67 | return errors.Errorf("invalid label value %q for key %q: must contain only letters, numbers, underscores, and dashes (max 63 chars)", value, key) |
| 68 | } |
| 69 | } |
| 70 | return nil |
| 71 | } |
| 72 | |
| 73 | type Expression struct { |
| 74 | Key string |