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| """Canonical public brain identifiers and registry domain errors.""" | |
| import re | |
| class InvalidBrainIdError(ValueError): | |
| """Invalid or reserved public brain identifier.""" | |
| code = "BRAIN_ID_INVALID" | |
| class ReservedBrainIdError(InvalidBrainIdError): | |
| """The identifier belongs to BrainAPI infrastructure.""" | |
| code = "BRAIN_ID_RESERVED" | |
| class BrainNotFoundError(LookupError): | |
| """The canonical registry does not contain the requested brain.""" | |
| class BrainAlreadyExistsError(ValueError): | |
| """A registry uniqueness constraint rejected brain creation.""" | |
| def validate_brain_id(brain_id: str) -> str: | |
| value = brain_id.strip() if isinstance(brain_id, str) else "" | |
| if not re.fullmatch(r"[A-Za-z0-9][A-Za-z0-9_-]{0,127}", value): | |
| raise InvalidBrainIdError( | |
| "brain_id must be 1-128 ASCII letters, digits, hyphens, or underscores " | |
| "and start with a letter or digit" | |
| ) | |
| if value.lower() == "system": | |
| raise ReservedBrainIdError('brain_id "system" is reserved') | |
| return value | |