57 lines
1.9 KiB
Python
57 lines
1.9 KiB
Python
# This file is part of Compute
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#
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# Compute is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Compute is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Compute. If not, see <http://www.gnu.org/licenses/>.
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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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