HPI/my/core/core_config.py
2020-09-30 21:54:09 +02:00

113 lines
4 KiB
Python

'''
Bindings for the 'core' HPI configuration
'''
import re
from typing import Sequence, Optional
from .common import PathIsh
from . import warnings
try:
from my.config import core as user_config # type: ignore[attr-defined]
except Exception as e:
try:
from my.config import common as user_config # type: ignore[attr-defined, assignment, misc]
warnings.high("'common' config section is deprecated. Please rename it to 'core'.")
except Exception as e2:
# make it defensive, because it's pretty commonly used and would be annoying if it breaks hpi doctor etc.
# this way it'll at least use the defaults
# todo actually not sure if needs a warning? Perhaps it's okay without it, because the defaults are reasonable enough
user_config = object # type: ignore[assignment, misc]
from dataclasses import dataclass
@dataclass
class Config(user_config):
# TODO if attr is set _and_ it's none, disable cache?
# todo or empty string?
# I guess flip the switch at some point when I'm confident in cachew
cache_dir: Optional[PathIsh] = None # FIXME use appdirs cache dir or something
# list of regexes/globs
# None means 'rely on disabled_modules'
enabled_modules : Optional[Sequence[str]] = None
# list of regexes/globs
# None means 'rely on enabled_modules'
disabled_modules: Optional[Sequence[str]] = None
def is_module_active(self, module: str) -> bool:
# todo might be nice to return the 'reason' too? e.g. which option has matched
should_enable = None
should_disable = None
def matches(specs: Sequence[str]) -> bool:
for spec in specs:
# not sure because . (packages separate) matches anything, but I guess unlikely to clash
if re.match(spec, module):
return True
return False
enabled = self.enabled_modules
disabled = self.disabled_modules
if enabled is None:
if disabled is None:
# by default, enable everything? not sure
return True
else:
# only disable the specified modules
return not matches(disabled)
else:
if disabled is None:
# only enable the specified modules
return matches(enabled)
else:
# ok, this means the config is inconsistent. better fallback onto the 'enable everything', then the user will notice?
warnings.medium("Both 'enabled_modules' and 'disabled_modules' are set in the config. Please only use one of them.")
return True
from .cfg import make_config
config = make_config(Config)
### tests start
def test_active_modules() -> None:
# todo maybe have this decorator for the whole of my.config?
from contextlib import contextmanager as ctx
@ctx
def reset():
from .cfg import override_config
with override_config(config) as cc:
cc.enabled_modules = None
cc.disabled_modules = None
yield cc
with reset() as cc:
assert cc.is_module_active('my.whatever')
assert cc.is_module_active('my.core' )
assert cc.is_module_active('my.body.exercise')
with reset() as cc:
cc.disabled_modules = ['my.body.*']
assert cc.is_module_active('my.whatever')
assert cc.is_module_active('my.core' )
assert not cc.is_module_active('my.body.exercise')
with reset() as cc:
cc.enabled_modules = ['my.whatever']
assert cc.is_module_active('my.whatever')
assert not cc.is_module_active('my.core' )
assert not cc.is_module_active('my.body.exercise')
with reset() as cc:
# if both are set, enable all
cc.disabled_modules = ['my.body.*']
cc.enabled_modules = ['my.whatever']
assert cc.is_module_active('my.whatever')
assert cc.is_module_active('my.core' )
assert cc.is_module_active('my.body.exercise')
# todo suppress warnings during the tests?
### tests end