|
| 1 | +from __future__ import annotations |
| 2 | + |
1 | 3 | import logging |
2 | 4 | import os |
3 | 5 | from datetime import datetime, timezone |
4 | 6 |
|
5 | | - |
6 | | -DEBUG = logging.DEBUG |
7 | | -INFO = logging.INFO |
8 | | -WARNING = logging.WARNING |
9 | | -ERROR = logging.ERROR |
10 | | -CRITICAL = logging.CRITICAL |
11 | | - |
12 | | -DEFAULT_LOG_LEVEL = logging.DEBUG |
| 7 | +DEFAULT_LOG_LEVEL = logging.INFO |
13 | 8 | DEFAULT_LOG_DIR = "e2c_logs" |
14 | | -DEFAULT_LOG = f"{DEFAULT_LOG_DIR}/e2c_root_log-{datetime.now(timezone.utc).strftime('%Y%m%d_%H%M%S_%f')}.log" |
| 9 | +DEFAULT_LOGPATH = f"{DEFAULT_LOG_DIR}/e2c_root_log-{datetime.now(timezone.utc).strftime('%Y%m%d_%H%M%S_%f')}.log" |
| 10 | + |
| 11 | +# Logger message and date formats. |
| 12 | +MSGFMT = "%(asctime)s_%(msecs)03d:%(levelname)s:%(name)s:%(funcName)s:%(message)s" |
| 13 | +DATEFMT = "%Y%m%d_%H%M%S" |
15 | 14 |
|
16 | 15 |
|
17 | | -def e2c_logger( |
18 | | - name=None, |
19 | | - logfilename=DEFAULT_LOG, |
20 | | - log_level=None, |
21 | | - to_console=False, |
22 | | - to_logfile=False, |
23 | | - propagate=False, |
| 16 | +def _logger( |
| 17 | + name: str | None = None, |
| 18 | + log_filename: str = DEFAULT_LOGPATH, |
| 19 | + log_level: int = DEFAULT_LOG_LEVEL, |
| 20 | + to_console: bool = False, |
| 21 | + to_logfile: bool = False, |
| 22 | + propagate: bool = False, |
24 | 23 | ): |
25 | 24 | """Return a root or named logger with variable configuration. |
26 | 25 |
|
27 | 26 | Parameters |
28 | 27 | ---------- |
29 | | - name : str |
| 28 | + name : str | None |
30 | 29 | The name displayed for the logger in messages. |
31 | 30 | If name == None or name == "__main__", the root logger is returned |
32 | | - logfilename : str |
33 | | - If logfile handling is requested, any logfile may be specified, or else |
34 | | - the default (e2c_logs/dflt_log-{datetime.now(timezone.utc).strftime('%Y%m%d_%H%M%S_%f')}.log) is used. |
35 | | - log_level : int |
36 | | - One of { logging.DEBUG (default), logging.INFO, logging.WARNING, logging.ERROR, logging.CRITICAL } |
37 | | - as defined in the module "logging". |
| 31 | + log_filename : str |
| 32 | + If logfile handling is requested, any logfile may be specified. |
| 33 | + log_level : LogLevel |
| 34 | + Either logging.DEBUG (10), logging.INFO (20), logging.WARNING (30), |
| 35 | + logging.ERROR (40), logging.CRITICAL (50), by default logging.INFO. |
38 | 36 | to_console : boolean |
39 | | - If True, a logging.StreamHandler is supplied. Default = False |
| 37 | + If True, a logging.StreamHandler is supplied, by default False. |
40 | 38 | to_logfile : boolean |
41 | | - If True, a logging.FileHandler is supplied. Default = False. |
| 39 | + If True, a logging.FileHandler is supplied, by default False. |
42 | 40 | propagate : boolean |
43 | | - If True, messages logged are propagated to the root logger. Default = False. |
| 41 | + If True, messages logged are propagated to the root logger, by default |
| 42 | + False. |
44 | 43 | """ |
45 | 44 | if to_logfile: |
46 | | - dn = os.path.dirname(logfilename) |
| 45 | + dn = os.path.dirname(log_filename) |
47 | 46 | if len(dn) and not os.path.exists(dn): |
48 | 47 | os.makedirs(dn) |
49 | 48 |
|
50 | | - if name == None or name == "__main__": |
51 | | - logger = logger.root |
| 49 | + if name is None or name == "__main__": |
| 50 | + # FIXME: F821 Undefined name `logger` |
| 51 | + logger = logger.root # noqa: F821 |
52 | 52 | else: |
53 | 53 | logger = logging.getLogger(name) |
54 | 54 |
|
55 | 55 | logger.propagate = propagate |
56 | | - |
57 | | - if log_level == None: |
58 | | - log_level = DEFAULT_LOG_LEVEL |
59 | | - |
60 | 56 | logger.setLevel(log_level) |
61 | 57 |
|
62 | 58 | logger.handlers = [] |
63 | 59 |
|
64 | | - msgfmt = "%(asctime)s_%(msecs)03d:%(levelname)s:%(name)s:%(funcName)s:%(message)s" |
65 | | - datefmt = "%Y%m%d_%H%M%S" |
66 | | - |
67 | 60 | if to_console: |
68 | 61 | logStreamHandler = logging.StreamHandler() |
69 | | - logStreamHandler.setFormatter(logging.Formatter(msgfmt, datefmt=datefmt)) |
| 62 | + logStreamHandler.setFormatter(logging.Formatter(MSGFMT, datefmt=DATEFMT)) |
70 | 63 | logger.addHandler(logStreamHandler) |
71 | 64 |
|
72 | 65 | if to_logfile: |
73 | | - logFileHandler = logging.FileHandler(logfilename) |
74 | | - logFileHandler.setFormatter(logging.Formatter(msgfmt, datefmt=datefmt)) |
| 66 | + logFileHandler = logging.FileHandler(log_filename) |
| 67 | + logFileHandler.setFormatter(logging.Formatter(MSGFMT, datefmt=DATEFMT)) |
75 | 68 | logger.addHandler(logFileHandler) |
76 | 69 |
|
77 | 70 | return logger |
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