Source code for cobald.daemon.config.python

import pathlib
import importlib.util
import sys
import itertools

_unique_module_id = itertools.count()

[docs]def load_configuration(path): """ Load a configuration from a module stored at ``path`` The ``path`` must end in a valid file extension for the appropriate module type, such as ``.py`` or ``.pyc`` for a plaintext or bytecode python module. :raises ValueError: if the extension does not mark a known module type """ # largely based on "Importing a source file directly" # current_index = next(_unique_module_id) module_name = f"<cobald config {current_index}>" # the following replicates the regular import machinery: # 1. create the module metadata (spec) # 2. create a module object base on the metadata # 3. execute the source to populate the module spec = importlib.util.spec_from_file_location(module_name, path) if spec is None: extension = pathlib.Path(path).suffix raise ValueError(f"Unrecognized file extension {extension} for config {path}") module = importlib.util.module_from_spec(spec) sys.modules[module_name] = module spec.loader.exec_module(module) return module