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core: more consistent module detection logic

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Dima Gerasimov 2020-09-29 14:31:19 +01:00 • committed by karlicoss
parent c79ffb50f6
commit 4b49add746
4 changed files with 225 additions and 103 deletions
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27
my/core/__main__.py
View file

@ -140,19 +140,21 @@ def modules_check(args):
module: Optional[str] = args.module
vw = '' if verbose else '; pass --verbose to print more information'
mods: Iterable[str]
from .util import get_stats, HPIModule, modules
from .core_config import config
mods: Iterable[HPIModule]
if module is None:
from .util import modules
mods = modules()
else:
mods = [module]
mods = [HPIModule(name=module, skip_reason=None)]
from .core_config import config
# todo add a --all argument to disregard is_active check?
for m in mods:
active = config.is_module_active(m)
if not active:
eprint(f'🔲 {color.YELLOW}SKIP{color.RESET}: {m:<30} module disabled in config')
for mr in mods:
skip = mr.skip_reason
m = mr.name
if skip is not None:
eprint(f'🔲 {color.YELLOW}SKIP{color.RESET}: {m:<30} {skip}')
continue
try:
@ -165,7 +167,7 @@ def modules_check(args):
continue
info(f'{color.GREEN}OK{color.RESET} : {m:<30}')
stats = getattr(mod, 'stats', None)
stats = get_stats(m)
if stats is None:
continue
from . import common
@ -188,8 +190,11 @@ def list_modules(args) -> None:
# todo add an active_modules() method? would be useful for doctor?
from .util import modules
for m in modules():
active = config.is_module_active(m)
for mr in modules():
m = mr.name
skip = mr.skip_reason
active = skip is None
# todo maybe reorder? (e.g. enabled first/last)? or/and color?
# todo maybe use [off] / [ON] so it's easier to distinguish visually?
print(f'- {m:50}' + ('' if active else f' {color.YELLOW}[disabled]{color.RESET}'))

75
my/core/core_config.py
View file

@ -37,33 +37,33 @@ class Config(user_config):
disabled_modules: Optional[Sequence[str]] = None
def is_module_active(self, module: str) -> bool:
def _is_module_active(self, module: str) -> Optional[bool]:
# None means the config doesn't specify anything
# 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:
def matches(specs: Sequence[str]) -> Optional[str]:
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
return spec
return None
enabled = self.enabled_modules
disabled = self.disabled_modules
if enabled is None:
if disabled is None:
# by default, enable everything? not sure
on = matches(self.enabled_modules or [])
off = matches(self.disabled_modules or [])
if on is None:
if off is None:
# user is indifferent
return None
else:
return False
else: # not None
if off is None:
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.")
else: # not None
# fallback onto the 'enable everything', then the user will notice
warnings.medium(f"[module]: conflicting regexes '{on}' and '{off}' are set in the config. Please only use one of them.")
return True
@ -72,42 +72,39 @@ config = make_config(Config)
### tests start
def test_active_modules() -> None:
from contextlib import contextmanager as ctx
@ctx
def _reset_config():
# 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')
def test_active_modules() -> None:
reset = _reset_config
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')
assert cc._is_module_active('my.whatever' ) is None
assert cc._is_module_active('my.core' ) is None
assert cc._is_module_active('my.body.exercise') is None
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')
cc.disabled_modules = ['my.body.*']
assert cc._is_module_active('my.whatever' ) is True
assert cc._is_module_active('my.core' ) is None
assert not cc._is_module_active('my.body.exercise') is True
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')
cc.enabled_modules = ['my.body.exercise']
assert cc._is_module_active('my.whatever' ) is None
assert cc._is_module_active('my.core' ) is None
assert cc._is_module_active('my.body.exercise') is True
# todo suppress warnings during the tests?
### tests end

217
my/core/util.py
View file

@ -1,20 +1,87 @@
from pathlib import Path
from itertools import chain
from importlib import import_module
import os
import re
import pkgutil
from typing import List, Iterable
import re
import sys
from typing import List, Iterable, NamedTuple, Optional
# TODO reuse in readme/blog post
class HPIModule(NamedTuple):
name: str
skip_reason: Optional[str]
def modules() -> Iterable[HPIModule]:
import my
for m in _iter_all_importables(my):
yield m
def ignored(m: str) -> bool:
excluded = [
'core.*',
'config.*',
## todo move these to core
'kython.*',
'mycfg_stub',
##
## these are just deprecated
'common',
'error',
'cfg',
##
## TODO vvv these should be moved away from here
'jawbone.plots',
'emfit.plot',
# 'google.takeout.paths',
'bluemaestro.check',
'location.__main__',
'photos.utils',
'books',
'coding',
'media',
'reading',
'_rss',
'twitter.common',
'rss.common',
'lastfm.fill_influxdb',
]
exs = '|'.join(excluded)
return re.match(f'^my.({exs})$', m) is not None
def get_stats(module: str):
# todo detect via ast?
try:
mod = import_module(module)
except Exception as e:
return None
return getattr(mod, 'stats', None)
__NOT_A_MODULE__ = 'Import this to mark a python file as a helper, not an actual module'
# todo reuse in readme/blog post
# borrowed from https://github.com/sanitizers/octomachinery/blob/24288774d6dcf977c5033ae11311dbff89394c89/tests/circular_imports_test.py#L22-L55
def _iter_all_importables(pkg):
def _iter_all_importables(pkg) -> Iterable[HPIModule]:
# todo crap. why does it include some stuff three times??
yield from chain.from_iterable(
_discover_path_importables(Path(p), pkg.__name__)
for p in pkg.__path__
# todo might need to handle __path__ for individual modules too?
# not sure why __path__ was duplicated, but it did happen..
for p in set(pkg.__path__)
)
def _discover_path_importables(pkg_pth, pkg_name):
def _discover_path_importables(pkg_pth, pkg_name) -> Iterable[HPIModule]:
from .core_config import config
"""Yield all importables under a given path and package."""
for dir_path, dirs, file_names in os.walk(pkg_pth):
file_names.sort()
@ -32,53 +99,105 @@ def _discover_path_importables(pkg_pth, pkg_name):
rel_pt = pkg_dir_path.relative_to(pkg_pth)
pkg_pref = '.'.join((pkg_name, ) + rel_pt.parts)
# TODO might need to make it defensive and yield Exception (otherwise hpi doctor might fail for no good reason)
yield from (
pkg_path
for _, pkg_path, _ in pkgutil.walk_packages(
yield from _walk_packages(
(str(pkg_dir_path), ), prefix=f'{pkg_pref}.',
)
# TODO might need to make it defensive and yield Exception (otherwise hpi doctor might fail for no good reason)
# use onerror=?
# ignored explicitly -> not HPI
# if enabled in config -> HPI
# if disabled in config -> HPI
# otherwise, check for stats
# recursion is relied upon using .*
# TODO when do we need to recurse?
def _walk_packages(path=None, prefix='', onerror=None) -> Iterable[HPIModule]:
'''
Modified version of https://github.com/python/cpython/blob/d50a0700265536a20bcce3fb108c954746d97625/Lib/pkgutil.py#L53,
to alvoid importing modules that are skipped
'''
from .core_config import config
def seen(p, m={}):
if p in m:
return True
m[p] = True
for info in pkgutil.iter_modules(path, prefix):
mname = info.name
if ignored(mname):
# not sure if need to yield?
continue
active = config._is_module_active(mname)
skip_reason = None
if active is False:
skip_reason = 'suppressed in the user config'
elif active is None:
# unspecified by the user, rely on other means
# stats detection is the last resort (because it actually tries to import)
stats = get_stats(mname)
if stats is None:
skip_reason = "has no 'stats()' function"
else: # active is True
# nothing to do, enabled explicitly
pass
yield HPIModule(
name=mname,
skip_reason=skip_reason,
)
if not info.ispkg:
continue
recurse = config._is_module_active(mname + '.')
if not recurse:
continue
# TODO marking hpi modules or unmarking non-modules? not sure what's worse
def ignored(m: str):
excluded = [
'kython.*',
'mycfg_stub',
'common',
'error',
'cfg',
'core.*',
'config.*',
'jawbone.plots',
'emfit.plot',
try:
__import__(mname)
except ImportError:
if onerror is not None:
onerror(mname)
except Exception:
if onerror is not None:
onerror(mname)
else:
raise
else:
path = getattr(sys.modules[mname], '__path__', None) or []
# don't traverse path items we've seen before
path = [p for p in path if not seen(p)]
yield from _walk_packages(path, mname+'.', onerror)
# todo think about these...
# 'google.takeout.paths',
'bluemaestro.check',
'location.__main__',
'photos.utils',
'books',
'coding',
'media',
'reading',
'_rss',
'twitter.common',
'rss.common',
'lastfm.fill_influxdb',
]
exs = '|'.join(excluded)
return re.match(f'^my.({exs})$', m)
def modules() -> Iterable[str]:
import my as pkg # todo not sure?
for x in _iter_all_importables(pkg):
if not ignored(x):
yield x
def get_modules() -> List[str]:
# deprecate?
def get_modules() -> List[HPIModule]:
return list(modules())
### tests start
## FIXME: add test when there is an import error -- should be defensive and yield exception
def test_module_detection() -> None:
from .core_config import _reset_config as reset
with reset() as cc:
cc.disabled_modules = ['my.location.*', 'my.body.*', 'my.workouts.*', 'my.private.*']
mods = {m.name: m for m in modules()}
assert mods['my.demo'] .skip_reason == "has no 'stats()' function"
with reset() as cc:
cc.disabled_modules = ['my.location.*', 'my.body.*', 'my.workouts.*', 'my.private.*', 'my.lastfm']
cc.enabled_modules = ['my.demo']
mods = {m.name: m for m in modules()}
assert mods['my.demo'] .skip_reason is None # not skipped
assert mods['my.lastfm'].skip_reason == "suppressed in the user config"
### tests end

1
tests/core.py
View file

@ -12,3 +12,4 @@ we can run against the tests in my.core directly.
from my.core.core_config import *
from my.core.error import *
from my.core.util import *