HPI/my/core/compat.py
2020-09-29 19:44:45 +02:00

49 lines
1.3 KiB
Python

'''
Some backwards compatibility stuff/deprecation helpers
'''
from types import ModuleType
from . import warnings
from .common import LazyLogger
logger = LazyLogger('my.core.compat')
def pre_pip_dal_handler(
name: str,
e: ModuleNotFoundError,
cfg,
requires=[],
) -> ModuleType:
'''
https://github.com/karlicoss/HPI/issues/79
'''
if e.name != name:
# the module itself was imported, so the problem is with some dependencies
raise e
try:
dal = _get_dal(cfg, name)
warnings.high(f'''
Specifying modules' dependencies in the config or in my/config/repos is deprecated!
Please install {' '.join(requires)} as PIP packages (see the corresponding README instructions).
'''.strip(), stacklevel=2)
except ModuleNotFoundError as ee:
dal = None
if dal is None:
# probably means there was nothing in the old config in the first place
# so we should raise the original exception
raise e
return dal
def _get_dal(cfg, module_name: str):
mpath = getattr(cfg, module_name, None)
if mpath is not None:
from .common import import_dir
return import_dir(mpath, '.dal')
else:
from importlib import import_module
return import_module(f'my.config.repos.{module_name}.dal')