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| 1 | +from abc import ABC, abstractmethod |
| 2 | +from enum import Enum |
| 3 | + |
| 4 | +class LogLevel(str,Enum): |
| 5 | + DEBUG = 'DEBUG' |
| 6 | + INFO = 'INFO' |
| 7 | + WARN = 'WARN' |
| 8 | + ERROR = 'ERROR' |
| 9 | + |
| 10 | +class Logger(ABC): |
| 11 | + @abstractmethod |
| 12 | + def log(self, level:LogLevel, msg:str, e:Exception=None): |
| 13 | + ... |
| 14 | + |
| 15 | +class ConsoleLogger(Logger): |
| 16 | + def log(self, level:LogLevel, msg:str, e:Exception=None): |
| 17 | + print(f"{level}: {msg}") |
| 18 | + |
| 19 | +class NullLogger(Logger): |
| 20 | + def log(self, level:LogLevel, msg:str, e:Exception=None): |
| 21 | + pass |
| 22 | + |
| 23 | +class Log: |
| 24 | + levels: list[LogLevel] = [LogLevel.DEBUG,LogLevel.WARN,LogLevel.ERROR] |
| 25 | + logger:Logger = ConsoleLogger() |
| 26 | + |
| 27 | + @property |
| 28 | + def debug_enabled(self): |
| 29 | + return LogLevel.DEBUG in Log.levels |
| 30 | + @property |
| 31 | + def info_enabled(self): |
| 32 | + return LogLevel.INFO in Log.levels |
| 33 | + @property |
| 34 | + def warn_enabled(self): |
| 35 | + return LogLevel.WARN in Log.levels |
| 36 | + @property |
| 37 | + def error_enabled(self): |
| 38 | + return LogLevel.ERROR in Log.levels |
| 39 | + |
| 40 | + def debug(msg:str): |
| 41 | + if (Log.debug_enabled): |
| 42 | + Log.logger.log(LogLevel.DEBUG, msg) |
| 43 | + def info(msg:str): |
| 44 | + if (Log.info_enabled): |
| 45 | + Log.logger.log(LogLevel.INFO, msg) |
| 46 | + def warn(msg:str, e:Exception=None): |
| 47 | + if (Log.warn_enabled): |
| 48 | + Log.logger.log(LogLevel.WARN, msg, e) |
| 49 | + def error(msg:str, e:Exception=None): |
| 50 | + if (Log.error_enabled): |
| 51 | + Log.logger.log(LogLevel.ERROR, msg, e) |
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