119 lines
2.9 KiB
Python
119 lines
2.9 KiB
Python
from ipaddress import IPv4Network
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from pathlib import Path
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from typing import Optional, Dict, List
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import pydantic
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from ._constants import RE_SEMVER, RE_VARNAME
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class _Storage(pydantic.BaseModel):
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"""a storage subsection"""
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directory: Path
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class _Project(pydantic.BaseModel):
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"""a project subsection"""
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name: pydantic.constr(
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regex=RE_VARNAME
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)
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enabled: bool = True
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override_storage: Optional[_Storage]
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@pydantic.root_validator(pre=True)
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@classmethod
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def unify_project(cls, values):
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"""parse different project notations"""
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if "name" in values:
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# default format
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return values
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elif len(values) == 1:
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# short format:
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# - <name>: <enabled>
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name, enabled = list(values.items())[0]
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return {
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"name": name,
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"enabled": True if enabled is None else enabled
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}
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else:
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# undefined format
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raise ValueError
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class _Network(pydantic.BaseModel):
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"""a network subsection"""
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name: pydantic.constr(
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to_lower=True,
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regex=RE_VARNAME
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)
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cidr: IPv4Network
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class Config(pydantic.BaseModel):
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"""represents a kiwi.yml"""
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version: pydantic.constr(
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regex=RE_SEMVER
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)
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shells: Optional[List[str]]
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environment: Optional[Dict[str, Optional[str]]]
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projects: Optional[List[_Project]]
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storage: _Storage
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network: _Network
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@pydantic.validator("environment", pre=True)
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@classmethod
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def unify_environment(cls, value) -> Optional[Dict[str, Optional[str]]]:
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"""parse different environment notations"""
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def parse_str(var_val: str) -> (str, Optional[str]):
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"""parse a "<variable>=<value>" string"""
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idx = var_val.find("=")
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if idx == -1:
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# don't split, just define the variable
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return var_val, None
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else:
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# split string, set variable to value
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return var_val[:idx], var_val[idx + 1:]
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if value is None:
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# empty environment
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return None
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elif isinstance(value, dict):
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# native dict format
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return value
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elif isinstance(value, list):
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# list format (multiple strings)
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result: Dict[str, Optional[str]] = {}
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for item in value:
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key, value = parse_str(item)
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result[key] = value
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return result
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elif isinstance(value, str):
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# string format (single variable):
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# "<var>=<value>"
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key, value = parse_str(value)
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return {key: value}
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elif isinstance(value, int):
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# integer format (just define single oddly named variable)
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return {str(value): None}
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else:
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# undefined format
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raise ValueError
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