39 lines
1015 B
Python

import re
from typing import Annotated
from pydantic import BaseModel, AfterValidator, IPvAnyAddress
def drop_config_suffix(name: str) -> str:
return name[:-6] if name.endswith('Config') else name
def to_snake_case(name: str) -> str:
return re.sub(r'(?<!^)(?=[A-Z])', '_', name).lower()
class SnakeCaseModel(BaseModel):
model_config = {
'alias_generator': lambda x: to_snake_case(drop_config_suffix(x))
}
@classmethod
def alias(cls):
return cls.model_config['alias_generator'](cls.__name__)
# This is a simple regex which is not by any means exhaustive but should cover gross syntax errors.
VALID_DOMAIN_NAME = re.compile(r"^localhost$|^(?!-)([A-Za-z0-9-]+\.)+[A-Za-z]{2,6}$")
def is_valid_domain_name(domain_name: str):
stripped = domain_name.strip()
matches = VALID_DOMAIN_NAME.match(stripped)
assert matches is not None
return stripped
DomainName = Annotated[str, AfterValidator(is_valid_domain_name)]
type Host = IPvAnyAddress | DomainName