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45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
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import yaml
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import getpass
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import os
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import string
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from typing import Tuple, Type, TypeVar
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from tml.core.config import base_config
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import fsspec
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C = TypeVar("C", bound=base_config.BaseConfig)
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def _read_file(f):
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with fsspec.open(f) as f:
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return f.read()
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def setup_configuration(
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config_type: Type[C],
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yaml_path: str,
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substitute_env_variable: bool = False,
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) -> Tuple[C, str]:
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"""Resolves a config at a yaml path.
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Args:
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config_type: Pydantic config class to load.
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yaml_path: yaml path of the config file.
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substitute_env_variable: If True substitute string in the format $VAR or ${VAR} by their
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environment variable value whenever possible. If an environment variable doesn't exist,
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the string is left unchanged.
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Returns:
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The pydantic config object.
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"""
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def _substitute(s):
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if substitute_env_variable:
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return string.Template(s).safe_substitute(os.environ, USER=getpass.getuser())
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return s
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assert config_type is not None, "can't use all_config without config_type"
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content = _substitute(yaml.safe_load(_read_file(yaml_path)))
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return config_type.parse_obj(content)
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