from copy import deepcopy from .config import Configuration from .setting import Setting from .source.base import Source __all__ = ("ConfigurationManager",) class ConfigurationManager(object): def __init__(self, name): self.name = name self.settings = [] def add(self, setting): if isinstance(setting, Setting): self.settings.append(setting) else: raise TypeError("Can only add objects of type Setting") def retrieve(self, *sources): to_process = [] for source in reversed(sources): if isinstance(source, Source): to_process.append(source) elif isinstance(source, type) and issubclass(source, Source): to_process.append(source()) else: raise TypeError("All sources must be a Source") config = Configuration(settings=self.settings) for source in to_process: config = source.get_config( deepcopy(self.settings), manager=self, parent=config ) config.validate() return config