42 lines
1.3 KiB
Python
42 lines
1.3 KiB
Python
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"""Configuration loader."""
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import tomllib
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from collections import UserDict
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from pathlib import Path
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from compute.exceptions import ConfigLoaderError
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DEFAULT_CONFIGURATION = {}
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DEFAULT_CONFIG_FILE = '/etc/computed/computed.toml'
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class ConfigLoader(UserDict):
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"""UserDict for storing configuration."""
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def __init__(self, file: Path | None = None):
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"""
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Initialise ConfigLoader.
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:param file: Path to configuration file. If `file` is None
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use default path from DEFAULT_CONFIG_FILE constant.
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"""
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# TODO @ge: load deafult configuration
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self.file = Path(file) if file else Path(DEFAULT_CONFIG_FILE)
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super().__init__(self.load())
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def load(self) -> dict:
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"""Load confguration object from TOML file."""
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try:
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with Path(self.file).open('rb') as configfile:
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return tomllib.load(configfile)
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# TODO @ge: add config schema validation
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except tomllib.TOMLDecodeError as tomlerr:
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raise ConfigLoaderError(
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f'Bad TOML syntax in config file: {self.file}: {tomlerr}'
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) from tomlerr
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except (OSError, ValueError) as readerr:
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raise ConfigLoaderError(
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f'Cannot read config file: {self.file}: {readerr}'
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) from readerr
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