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| 1 | +# Copyright (c) Facebook, Inc. and its affiliates. (https://www.facebook.com) |
| 2 | +# Copyright (c) 2022 Mapillary, Inc. (https://www.mapillary.com) |
| 3 | +# This source code is licensed under the MIT license found in the |
| 4 | +# LICENSE file in the root directory of this source tree. |
| 5 | +# -*- coding: utf-8 -*- |
| 6 | + |
| 7 | +""" |
| 8 | +mapillary.utils.logger |
| 9 | +~~~~~~~~~~~~~~~~~~~~~~ |
| 10 | +
|
| 11 | +This module implements the logger for mapillary, which is a wrapper of the logger package and |
| 12 | +the default configuration for each of the loggers per file. |
| 13 | +
|
| 14 | +""" |
| 15 | + |
| 16 | +import logging |
| 17 | +import sys |
| 18 | +import os |
| 19 | + |
| 20 | + |
| 21 | +class Logger: |
| 22 | + |
| 23 | + format_string: str = "%(asctime)s - %(name)s - %(levelname)s - %(message)s" |
| 24 | + level: int = logging.INFO |
| 25 | + |
| 26 | + @staticmethod |
| 27 | + def setup_logger(name: str, level: int = logging.INFO) -> logging.Logger: |
| 28 | + """ |
| 29 | + Function setup as many loggers as you want. To be used at the top of the file. |
| 30 | +
|
| 31 | + Usage:: |
| 32 | +
|
| 33 | + >>> Logger.setup_logger(name='mapillary.xxxx.yyyy', level=logging.INFO) |
| 34 | + logger.Logger |
| 35 | +
|
| 36 | + :param name: The name of the logger |
| 37 | + :type name: str |
| 38 | +
|
| 39 | + :param level: The level of the logger |
| 40 | + :type level: int |
| 41 | +
|
| 42 | + :return: The logger object |
| 43 | + :rtype: logging.Logger |
| 44 | + """ |
| 45 | + |
| 46 | + # Basic logger setup |
| 47 | + logger: Logger = logging.getLogger(name) |
| 48 | + |
| 49 | + # stdout logger setup |
| 50 | + stream_handler: logging.StreamHandler = logging.StreamHandler(sys.stdout) |
| 51 | + logger.addHandler(stream_handler) |
| 52 | + |
| 53 | + try: |
| 54 | + logger.setLevel(level) |
| 55 | + except ValueError: |
| 56 | + logger.setLevel(logging.INFO) |
| 57 | + logger.warning("LOG_LEVEL: Invalid variable - defaulting to: INFO") |
| 58 | + |
| 59 | + # File logger setup |
| 60 | + formatter: logging.Formatter = logging.Formatter(Logger.format_string) |
| 61 | + handler: logging.FileHandler = logging.FileHandler( |
| 62 | + Logger.get_os_log_path(name.split(".")[1] + ".log") |
| 63 | + ) |
| 64 | + handler.setFormatter(formatter) |
| 65 | + logger.addHandler(handler) |
| 66 | + |
| 67 | + return logger |
| 68 | + |
| 69 | + @staticmethod |
| 70 | + def get_os_log_path(log_file: str) -> str: |
| 71 | + """ |
| 72 | + Get the path of the log file based on the OS |
| 73 | +
|
| 74 | + :param log_file: The name of the log file |
| 75 | + :type log_file: str |
| 76 | +
|
| 77 | + :return: The path where the logs will be stored |
| 78 | + :rtype: str |
| 79 | + """ |
| 80 | + |
| 81 | + log_path: str = os.path.join(os.path.dirname(os.path.abspath(__file__)), "logs") |
| 82 | + |
| 83 | + if not os.path.exists(log_path): |
| 84 | + os.makedirs(log_path) |
| 85 | + |
| 86 | + return os.path.join(log_path, log_file) |
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