mandos.model.utils.setup.MandosLogging.configure_level() - Code Metrics - Inspection of "feat: refactor" - dmyersturnbull/mandos - Measure and Improve Code Quality continuously with Scrutinizer

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Push — main ( 83a9fb...fa90c4 )

by Douglas

created 2021-09-29 03:06 UTC

MandosLogging.configure_level() C

↳ Parent: mandos.model.utils.setup

Complexity

Conditions

Size

Total Lines	29
Code Lines	26

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	9
eloc	26
nop	7
dl	0
loc	29
rs	6.6666
c	0
b	0
f	0

from __future__ import annotations

import logging
import sys
from dataclasses import dataclass
from inspect import cleandoc
from pathlib import Path
from typing import Mapping, Optional, Union

# noinspection PyProtectedMember
import loguru._defaults as _defaults

import regex

from loguru import logger


# noinspection PyProtectedMember
from loguru._logger import Logger

from pocketutils.core.exceptions import IllegalStateError, XValueError


_LOGGER_ARG_PATTERN = regex.compile(r"(?:([a-zA-Z]+):)?(.*)", flags=regex.V1)
_DEFAULT_LEVEL: str = "INFO"
FMT = cleandoc(
    r"""
    <bold>{time:YYYY-MM-DD HH:mm:ss.SSS}</bold> |
    <level>{level: <8}</level> |
    <cyan>{name}</cyan>:<cyan>{function}</cyan>:<cyan>{line}</cyan> - <level>{message}</level>
    """
).replace("\n", " ")


class _SENTINEL:
    pass


log_compressions = {
    ".xz",
    ".lzma",
    ".gz",
    ".zip",
    ".bz2",
    ".tar",
    ".tar.gz",
    ".tar.bz2",
    ".tar.xz",
}
valid_log_suffixes = {
    *{f".log{c}" for c in log_compressions},
    *{f".txt{c}" for c in log_compressions},
    *{f".json{c}" for c in log_compressions},
}
# the levels for caution and notice are DEFINED here
# trace and success must match loguru's
# and the rest must match logging's
# note that most of these alternate between informative and problematic
# i.e. info (ok), caution (bad), success (ok), warning (bad), notice (ok), error (bad)
LEVELS = dict(
    TRACE=_defaults.LOGURU_TRACE_NO,
    DEBUG=_defaults.LOGURU_DEBUG_NO,
    INFO=_defaults.LOGURU_INFO_NO,
    CAUTION=23,
    SUCCESS=25,
    WARNING=_defaults.LOGURU_WARNING_NO,
    NOTICE=35,
    ERROR=_defaults.LOGURU_ERROR_NO,
    CRITICAL=_defaults.LOGURU_CRITICAL_NO,
)
LEVEL_COLORS = dict(
    TRACE="",
    DEBUG="",
    INFO="<bold>",
    CAUTION="<yellow>",
    SUCCESS="<blue>",
    WARNING="<yellow>",
    NOTICE="<blue>",
    ERROR="<red>",
    CRITICAL="<RED>",
)
LEVEL_ICONS = {}
_ALIASES = dict(NONE="OFF", NO="OFF", VERBOSE="INFO", QUIET="ERROR")


@dataclass(frozen=True, repr=True, order=True)

class LogSinkInfo:
    path: Path
    base: Path
    suffix: str
    serialize: bool
    compression: Optional[str]

    @classmethod
    def guess(cls, path: Union[str, Path]) -> LogSinkInfo:

        path = Path(path)
        base, compression = path.name, None
        for c in log_compressions:

            if path.name.endswith(c):
                base, compression = path.name[: -len(c)], c
        if not [base.endswith(s) for s in [".json", ".log", ".txt"]]:
            raise XValueError(
                f"Log filename {path.name} is not .json, .log, .txt, or a compressed variant"
            )
        return LogSinkInfo(
            path=path,
            base=path.parent / base,
            suffix=compression,
            serialize=base.endswith(".json"),
            compression=compression,
        )


class InterceptHandler(logging.Handler):
    """
    Redirects standard logging to loguru.
    """

    def emit(self, record):
        # Get corresponding Loguru level if it exists
        try:
            level = logger.level(record.levelname).name
        except ValueError:
            level = record.levelno
        # Find caller from where originated the logged message
        frame, depth = logging.currentframe(), 2
        while frame.f_code.co_filename == logging.__file__:
            frame = frame.f_back
            depth += 1
        logger.opt(depth=depth, exception=record.exc_info).log(level, record.getMessage())


def _notice(__message: str, *args, **kwargs):
    return logger.log("NOTICE", __message, *args, **kwargs)


def _caution(__message: str, *args, **kwargs):
    return logger.log("CAUTION", __message, *args, **kwargs)


class MyLogger(Logger):
    """
    A wrapper that has a fake notice() method to trick static analysis.
    """

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self._current_stderr_log_level: Optional[str] = _DEFAULT_LEVEL

    @property
    def current_stderr_log_level(self) -> Optional[str]:

        return self._current_stderr_log_level

    def notice(self, __message: str, *args, **kwargs):

        raise NotImplementedError()  # not real

    def caution(self, __message: str, *args, **kwargs):

        raise NotImplementedError()  # not real


class MandosLogging:

    # this is required for mandos to run

    DEFAULT_LEVEL: str = _DEFAULT_LEVEL
    _main_handler_id: int = None

    @classmethod
    def inverse_levels(cls) -> Mapping[int, str]:

        return {v: k for k, v in cls.levels()}

    @classmethod
    def levels(cls) -> Mapping[str, int]:

        return dict(LEVELS)

    @classmethod
    def init(
        cls,

        *,

        level: str = _DEFAULT_LEVEL,

        sink=sys.stderr,

        force_utf8: bool = True,

        intercept: bool = True,

        force: bool = False,

    ) -> None:
        """
        Sets an initial configuration.
        """
        if cls._main_handler_id is not None and not force:
            return
        if force_utf8:
            # we warn the user about this in the docs!
            sys.stderr.reconfigure(encoding="utf-8")
            sys.stdout.reconfigure(encoding="utf-8")
            sys.stdin.reconfigure(encoding="utf-8")
        if intercept:
            logging.basicConfig(handlers=[InterceptHandler()], level=0, encoding="utf-8")
        for k, v in LEVELS.items():

            cls.configure_level(
                k, v, color=LEVEL_COLORS.get(k, _SENTINEL), icon=LEVEL_ICONS.get(k, _SENTINEL)
            )
        logger.notice = _notice
        logger.caution = _caution
        logger.remove(None)  # get rid of the built-in handler
        cls.set_main_level(level, sink=sink)
        logger.disable("chembl_webresource_client")
        logger.notice("Started.")

    @classmethod
    def configure_level(

        cls,

        name: str,

        level: int,

        *,

        color: Union[None, str, _SENTINEL] = _SENTINEL,

        icon: Union[None, str, _SENTINEL] = _SENTINEL,

        replace: bool = True,

    ):
        try:
            data = logger.level(name)
        except ValueError:
            data = None
        if data:
            if replace:
                if level != data.no:  # loguru doesn't check whether they're eq; it just errors
                    raise IllegalStateError(f"Cannot set level={level}!={data.no} for {name}")
                logger.level(
                    name,
                    color=data.color if color is _SENTINEL else color,
                    icon=data.icon if icon is _SENTINEL else icon,
                )
        else:
            logger.level(
                name,
                no=level,
                color=None if color is _SENTINEL else color,
                icon=None if icon is _SENTINEL else icon,
            )

    @classmethod
    def set_main_level(cls, level: str, sink=sys.stderr) -> None:
        """
        Sets the logging level for the main handler (normally stderr).
        """
        level = level.upper()
        if cls._main_handler_id is not None:
            try:
                logger.remove(cls._main_handler_id)
            except ValueError:
                logger.error(f"Cannot remove handler {cls._main_handler_id}")
        if level != "OFF":
            cls._main_handler_id = logger.add(sink, level=level, format=FMT)

    @classmethod
    def add_path(cls, path: Path, level: str) -> int:

        level = level.upper()
        info = LogSinkInfo.guess(path)
        return logger.add(
            str(info.base),
            level=level,
            compression=info.compression,
            serialize=info.serialize,
            backtrace=True,
            diagnose=True,
            enqueue=True,
            encoding="utf-8",
        )


class MandosSetup:

    @classmethod
    def aliases(cls) -> Mapping[str, str]:

        return _ALIASES

    def __call__(
        self,

        log: Union[None, str, Path] = None,

        level: Optional[str] = MandosLogging.DEFAULT_LEVEL,

    ) -> None:
        """
        This function controls all aspects of the logging as set via command-line.

        Args:
            level: The level for stderr
            log: If set, the path to a file. Can be prefixed with ``:level:`` to set the level
                  (e.g. ``:INFO:mandos-run.log.gz``). Can serialize to JSON if .json is used
                  instead of .log or .txt.
        """
        if level is None:
            level = MandosLogging.DEFAULT_LEVEL
        level = level.upper()
        level = _ALIASES.get(level, level)
        if level not in LEVELS:
            _permitted = ", ".join([*LEVELS, *_ALIASES.keys()])
            raise XValueError(f"{level.lower()} not a permitted log level (allowed: {_permitted}")
        MandosLogging.set_main_level(level)
        if log is not None or len(str(log)) == 0:
            match = _LOGGER_ARG_PATTERN.match(str(log))
            path_level = "DEBUG" if match.group(1) is None else match.group(1)
            path = Path(match.group(2))
            MandosLogging.add_path(path, path_level)
            logger.info(f"Added logger to {path} at level {path_level}")
        logger.info(f"Set log level to {level}")


# weird as hell, but it works
# noinspection PyTypeChecker
logger: MyLogger = logger
MandosLogging.init()


MANDOS_SETUP = MandosSetup()

__all__ = ["logger", "MANDOS_SETUP", "MandosLogging", "LogSinkInfo"]


1			from __future__ import annotations
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2			import logging
3			import sys
4			from dataclasses import dataclass
5			from inspect import cleandoc
6			from pathlib import Path
7			from typing import Mapping, Optional, Union
8
9			# noinspection PyProtectedMember
10			import loguru._defaults as _defaults
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11			import regex
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12			from loguru import logger
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13
14			# noinspection PyProtectedMember
15			from loguru._logger import Logger
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16			from pocketutils.core.exceptions import IllegalStateError, XValueError
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17
18			_LOGGER_ARG_PATTERN = regex.compile(r"(?:([a-zA-Z]+):)?(.*)", flags=regex.V1)
19			_DEFAULT_LEVEL: str = "INFO"
20			FMT = cleandoc(
21			r"""
22			<bold>{time:YYYY-MM-DD HH:mm:ss.SSS}</bold> \|
23			<level>{level: <8}</level> \|
24			<cyan>{name}</cyan>:<cyan>{function}</cyan>:<cyan>{line}</cyan> - <level>{message}</level>
25			"""
26			).replace("\n", " ")
27
28
29			class _SENTINEL:
30			pass
31
32
33			log_compressions = {
34			".xz",
35			".lzma",
36			".gz",
37			".zip",
38			".bz2",
39			".tar",
40			".tar.gz",
41			".tar.bz2",
42			".tar.xz",
43			}
44			valid_log_suffixes = {
45			*{f".log{c}" for c in log_compressions},
46			*{f".txt{c}" for c in log_compressions},
47			*{f".json{c}" for c in log_compressions},
48			}
49			# the levels for caution and notice are DEFINED here
50			# trace and success must match loguru's
51			# and the rest must match logging's
52			# note that most of these alternate between informative and problematic
53			# i.e. info (ok), caution (bad), success (ok), warning (bad), notice (ok), error (bad)
54			LEVELS = dict(
55			TRACE=_defaults.LOGURU_TRACE_NO,
56			DEBUG=_defaults.LOGURU_DEBUG_NO,
57			INFO=_defaults.LOGURU_INFO_NO,
58			CAUTION=23,
59			SUCCESS=25,
60			WARNING=_defaults.LOGURU_WARNING_NO,
61			NOTICE=35,
62			ERROR=_defaults.LOGURU_ERROR_NO,
63			CRITICAL=_defaults.LOGURU_CRITICAL_NO,
64			)
65			LEVEL_COLORS = dict(
66			TRACE="",
67			DEBUG="",
68			INFO="<bold>",
69			CAUTION="<yellow>",
70			SUCCESS="<blue>",
71			WARNING="<yellow>",
72			NOTICE="<blue>",
73			ERROR="<red>",
74			CRITICAL="<RED>",
75			)
76			LEVEL_ICONS = {}
77			_ALIASES = dict(NONE="OFF", NO="OFF", VERBOSE="INFO", QUIET="ERROR")
78
79
80			@dataclass(frozen=True, repr=True, order=True)
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81			class LogSinkInfo:
82			path: Path
83			base: Path
84			suffix: str
85			serialize: bool
86			compression: Optional[str]
87
88			@classmethod
89			def guess(cls, path: Union[str, Path]) -> LogSinkInfo:
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90			path = Path(path)
91			base, compression = path.name, None
92			for c in log_compressions:
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93			if path.name.endswith(c):
94			base, compression = path.name[: -len(c)], c
95			if not [base.endswith(s) for s in [".json", ".log", ".txt"]]:
96			raise XValueError(
97			f"Log filename {path.name} is not .json, .log, .txt, or a compressed variant"
98			)
99			return LogSinkInfo(
100			path=path,
101			base=path.parent / base,
102			suffix=compression,
103			serialize=base.endswith(".json"),
104			compression=compression,
105			)
106
107
108			class InterceptHandler(logging.Handler):
109			"""
110			Redirects standard logging to loguru.
111			"""
112
113			def emit(self, record):
114			# Get corresponding Loguru level if it exists
115			try:
116			level = logger.level(record.levelname).name
117			except ValueError:
118			level = record.levelno
119			# Find caller from where originated the logged message
120			frame, depth = logging.currentframe(), 2
121			while frame.f_code.co_filename == logging.__file__:
122			frame = frame.f_back
123			depth += 1
124			logger.opt(depth=depth, exception=record.exc_info).log(level, record.getMessage())
125
126
127			def _notice(__message: str, args, *kwargs):
128			return logger.log("NOTICE", __message, args, *kwargs)
129
130
131			def _caution(__message: str, args, *kwargs):
132			return logger.log("CAUTION", __message, args, *kwargs)
133
134
135			class MyLogger(Logger):
136			"""
137			A wrapper that has a fake notice() method to trick static analysis.
138			"""
139
140			def __init__(self, args, *kwargs):
141			super().__init__(args, *kwargs)
142			self._current_stderr_log_level: Optional[str] = _DEFAULT_LEVEL
143
144			@property
145			def current_stderr_log_level(self) -> Optional[str]:
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146			return self._current_stderr_log_level
147
148			def notice(self, __message: str, args, *kwargs):
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149			raise NotImplementedError() # not real
150
151			def caution(self, __message: str, args, *kwargs):
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152			raise NotImplementedError() # not real
153
154
155			class MandosLogging:
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156			# this is required for mandos to run
157
158			DEFAULT_LEVEL: str = _DEFAULT_LEVEL
159			_main_handler_id: int = None
160
161			@classmethod
162			def inverse_levels(cls) -> Mapping[int, str]:
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163			return {v: k for k, v in cls.levels()}
164
165			@classmethod
166			def levels(cls) -> Mapping[str, int]:
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167			return dict(LEVELS)
168
169			@classmethod
170			def init(
171			cls,
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172			*,
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173			level: str = _DEFAULT_LEVEL,
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174			sink=sys.stderr,
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175			force_utf8: bool = True,
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176			intercept: bool = True,
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177			force: bool = False,
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178			) -> None:
179			"""
180			Sets an initial configuration.
181			"""
182			if cls._main_handler_id is not None and not force:
183			return
184			if force_utf8:
185			# we warn the user about this in the docs!
186			sys.stderr.reconfigure(encoding="utf-8")
187			sys.stdout.reconfigure(encoding="utf-8")
188			sys.stdin.reconfigure(encoding="utf-8")
189			if intercept:
190			logging.basicConfig(handlers=[InterceptHandler()], level=0, encoding="utf-8")
191			for k, v in LEVELS.items():
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192			cls.configure_level(
193			k, v, color=LEVEL_COLORS.get(k, _SENTINEL), icon=LEVEL_ICONS.get(k, _SENTINEL)
194			)
195			logger.notice = _notice
196			logger.caution = _caution
197			logger.remove(None) # get rid of the built-in handler
198			cls.set_main_level(level, sink=sink)
199			logger.disable("chembl_webresource_client")
200			logger.notice("Started.")
201
202			@classmethod
203			def configure_level(
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204			cls,
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205			name: str,
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206			level: int,
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207			*,
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208			color: Union[None, str, _SENTINEL] = _SENTINEL,
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209			icon: Union[None, str, _SENTINEL] = _SENTINEL,
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210			replace: bool = True,
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211			):
212			try:
213			data = logger.level(name)
214			except ValueError:
215			data = None
216			if data:
217			if replace:
218			if level != data.no: # loguru doesn't check whether they're eq; it just errors
219			raise IllegalStateError(f"Cannot set level={level}!={data.no} for {name}")
220			logger.level(
221			name,
222			color=data.color if color is _SENTINEL else color,
223			icon=data.icon if icon is _SENTINEL else icon,
224			)
225			else:
226			logger.level(
227			name,
228			no=level,
229			color=None if color is _SENTINEL else color,
230			icon=None if icon is _SENTINEL else icon,
231			)
232
233			@classmethod
234			def set_main_level(cls, level: str, sink=sys.stderr) -> None:
235			"""
236			Sets the logging level for the main handler (normally stderr).
237			"""
238			level = level.upper()
239			if cls._main_handler_id is not None:
240			try:
241			logger.remove(cls._main_handler_id)
242			except ValueError:
243			logger.error(f"Cannot remove handler {cls._main_handler_id}")
244			if level != "OFF":
245			cls._main_handler_id = logger.add(sink, level=level, format=FMT)
246
247			@classmethod
248			def add_path(cls, path: Path, level: str) -> int:
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249			level = level.upper()
250			info = LogSinkInfo.guess(path)
251			return logger.add(
252			str(info.base),
253			level=level,
254			compression=info.compression,
255			serialize=info.serialize,
256			backtrace=True,
257			diagnose=True,
258			enqueue=True,
259			encoding="utf-8",
260			)
261
262
263			class MandosSetup:
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264			@classmethod
265			def aliases(cls) -> Mapping[str, str]:
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266			return _ALIASES
267
268			def __call__(
269			self,
			0 ignored issues – show Coding Style introduced 2021-09-29 03:10 UTC by Report Bug Copy Issue Report Wrong hanging indentation before block (add 4 spaces). Loading history...
270			log: Union[None, str, Path] = None,
			0 ignored issues – show Coding Style introduced 2021-09-29 03:10 UTC by Report Bug Copy Issue Report Wrong hanging indentation before block (add 4 spaces). Loading history...
271			level: Optional[str] = MandosLogging.DEFAULT_LEVEL,
			0 ignored issues – show Coding Style introduced 2021-09-29 03:10 UTC by Report Bug Copy Issue Report Wrong hanging indentation before block (add 4 spaces). Loading history...
272			) -> None:
273			"""
274			This function controls all aspects of the logging as set via command-line.
275
276			Args:
277			level: The level for stderr
278			log: If set, the path to a file. Can be prefixed with ``:level:`` to set the level
279			(e.g. ``:INFO:mandos-run.log.gz``). Can serialize to JSON if .json is used
280			instead of .log or .txt.
281			"""
282			if level is None:
283			level = MandosLogging.DEFAULT_LEVEL
284			level = level.upper()
285			level = _ALIASES.get(level, level)
286			if level not in LEVELS:
287			_permitted = ", ".join([LEVELS, _ALIASES.keys()])
288			raise XValueError(f"{level.lower()} not a permitted log level (allowed: {_permitted}")
289			MandosLogging.set_main_level(level)
290			if log is not None or len(str(log)) == 0:
291			match = _LOGGER_ARG_PATTERN.match(str(log))
292			path_level = "DEBUG" if match.group(1) is None else match.group(1)
293			path = Path(match.group(2))
294			MandosLogging.add_path(path, path_level)
295			logger.info(f"Added logger to {path} at level {path_level}")
296			logger.info(f"Set log level to {level}")
297
298
299			# weird as hell, but it works
300			# noinspection PyTypeChecker
301			logger: MyLogger = logger
302			MandosLogging.init()
303
304
305			MANDOS_SETUP = MandosSetup()
306
307			__all__ = ["logger", "MANDOS_SETUP", "MandosLogging", "LogSinkInfo"]
308

dmyersturnbull / mandos

Push — main ( 83a9fb...fa90c4 )

MandosLogging.configure_level() C

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