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