|
| 1 | +from micropython import const |
| 2 | +import io |
| 3 | +import sys |
| 4 | +import time |
| 5 | + |
| 6 | +CRITICAL = const(50) |
| 7 | +ERROR = const(40) |
| 8 | +WARNING = const(30) |
| 9 | +INFO = const(20) |
| 10 | +DEBUG = const(10) |
| 11 | +NOTSET = const(0) |
| 12 | + |
| 13 | +_DEFAULT_LEVEL = const(WARNING) |
| 14 | + |
| 15 | +_level_dict = { |
| 16 | + CRITICAL: "CRITICAL", |
| 17 | + ERROR: "ERROR", |
| 18 | + WARNING: "WARNING", |
| 19 | + INFO: "INFO", |
| 20 | + DEBUG: "DEBUG", |
| 21 | + NOTSET: "NOTSET", |
| 22 | +} |
| 23 | + |
| 24 | +_loggers = {} |
| 25 | +_stream = sys.stderr |
| 26 | +_default_fmt = "%(levelname)s:%(name)s:%(message)s" |
| 27 | +_default_datefmt = "%Y-%m-%d %H:%M:%S" |
| 28 | + |
| 29 | + |
| 30 | +class LogRecord: |
| 31 | + def set(self, name, level, message): |
| 32 | + self.name = name |
| 33 | + self.levelno = level |
| 34 | + self.levelname = _level_dict[level] |
| 35 | + self.message = message |
| 36 | + self.ct = time.time() |
| 37 | + self.msecs = int((self.ct - int(self.ct)) * 1000) |
| 38 | + self.asctime = None |
| 39 | + |
| 40 | + |
| 41 | +class Handler: |
| 42 | + def __init__(self, level=NOTSET): |
| 43 | + self.level = level |
| 44 | + self.formatter = None |
| 45 | + |
| 46 | + def close(self): |
| 47 | + pass |
| 48 | + |
| 49 | + def setLevel(self, level): |
| 50 | + self.level = level |
| 51 | + |
| 52 | + def setFormatter(self, formatter): |
| 53 | + self.formatter = formatter |
| 54 | + |
| 55 | + def format(self, record): |
| 56 | + return self.formatter.format(record) |
| 57 | + |
| 58 | + |
| 59 | +class StreamHandler(Handler): |
| 60 | + def __init__(self, stream=None): |
| 61 | + super().__init__() |
| 62 | + self.stream = _stream if stream is None else stream |
| 63 | + self.terminator = "\n" |
| 64 | + |
| 65 | + def close(self): |
| 66 | + if hasattr(self.stream, "flush"): |
| 67 | + self.stream.flush() |
| 68 | + |
| 69 | + def emit(self, record): |
| 70 | + if record.levelno >= self.level: |
| 71 | + self.stream.write(self.format(record) + self.terminator) |
| 72 | + |
| 73 | + |
| 74 | +class FileHandler(StreamHandler): |
| 75 | + def __init__(self, filename, mode="a", encoding="UTF-8"): |
| 76 | + super().__init__(stream=open(filename, mode=mode, encoding=encoding)) |
| 77 | + |
| 78 | + def close(self): |
| 79 | + super().close() |
| 80 | + self.stream.close() |
| 81 | + |
| 82 | + |
| 83 | +class Formatter: |
| 84 | + def __init__(self, fmt=None, datefmt=None): |
| 85 | + self.fmt = _default_fmt if fmt is None else fmt |
| 86 | + self.datefmt = _default_datefmt if datefmt is None else datefmt |
| 87 | + |
| 88 | + def usesTime(self): |
| 89 | + return "asctime" in self.fmt |
| 90 | + |
| 91 | + def formatTime(self, datefmt, record): |
| 92 | + if hasattr(time, "strftime"): |
| 93 | + return time.strftime(datefmt, time.localtime(record.ct)) |
| 94 | + return None |
| 95 | + |
| 96 | + def format(self, record): |
| 97 | + if self.usesTime(): |
| 98 | + record.asctime = self.formatTime(self.datefmt, record) |
| 99 | + return self.fmt % { |
| 100 | + "name": record.name, |
| 101 | + "message": record.message, |
| 102 | + "msecs": record.msecs, |
| 103 | + "asctime": record.asctime, |
| 104 | + "levelname": record.levelname, |
| 105 | + } |
| 106 | + |
| 107 | + |
| 108 | +class Logger: |
| 109 | + def __init__(self, name, level=NOTSET): |
| 110 | + self.name = name |
| 111 | + self.level = level |
| 112 | + self.handlers = [] |
| 113 | + self.record = LogRecord() |
| 114 | + |
| 115 | + def setLevel(self, level): |
| 116 | + self.level = level |
| 117 | + |
| 118 | + def isEnabledFor(self, level): |
| 119 | + return level >= self.getEffectiveLevel() |
| 120 | + |
| 121 | + def getEffectiveLevel(self): |
| 122 | + return self.level or getLogger().level or _DEFAULT_LEVEL |
| 123 | + |
| 124 | + def log(self, level, msg, *args): |
| 125 | + if self.isEnabledFor(level): |
| 126 | + if args: |
| 127 | + if isinstance(args[0], dict): |
| 128 | + args = args[0] |
| 129 | + msg = msg % args |
| 130 | + self.record.set(self.name, level, msg) |
| 131 | + handlers = self.handlers |
| 132 | + if not handlers: |
| 133 | + handlers = getLogger().handlers |
| 134 | + for h in handlers: |
| 135 | + h.emit(self.record) |
| 136 | + |
| 137 | + def debug(self, msg, *args): |
| 138 | + self.log(DEBUG, msg, *args) |
| 139 | + |
| 140 | + def info(self, msg, *args): |
| 141 | + self.log(INFO, msg, *args) |
| 142 | + |
| 143 | + def warning(self, msg, *args): |
| 144 | + self.log(WARNING, msg, *args) |
| 145 | + |
| 146 | + def error(self, msg, *args): |
| 147 | + self.log(ERROR, msg, *args) |
| 148 | + |
| 149 | + def critical(self, msg, *args): |
| 150 | + self.log(CRITICAL, msg, *args) |
| 151 | + |
| 152 | + def exception(self, msg, *args, exc_info=True): |
| 153 | + self.log(ERROR, msg, *args) |
| 154 | + tb = None |
| 155 | + if isinstance(exc_info, BaseException): |
| 156 | + tb = exc_info |
| 157 | + elif hasattr(sys, "exc_info"): |
| 158 | + tb = sys.exc_info()[1] |
| 159 | + if tb: |
| 160 | + buf = io.StringIO() |
| 161 | + sys.print_exception(tb, buf) |
| 162 | + self.log(ERROR, buf.getvalue()) |
| 163 | + |
| 164 | + def addHandler(self, handler): |
| 165 | + self.handlers.append(handler) |
| 166 | + |
| 167 | + def hasHandlers(self): |
| 168 | + return len(self.handlers) > 0 |
| 169 | + |
| 170 | + |
| 171 | +def getLogger(name=None): |
| 172 | + if name is None: |
| 173 | + name = "root" |
| 174 | + if name not in _loggers: |
| 175 | + _loggers[name] = Logger(name) |
| 176 | + if name == "root": |
| 177 | + basicConfig() |
| 178 | + return _loggers[name] |
| 179 | + |
| 180 | + |
| 181 | +def log(level, msg, *args): |
| 182 | + getLogger().log(level, msg, *args) |
| 183 | + |
| 184 | + |
| 185 | +def debug(msg, *args): |
| 186 | + getLogger().debug(msg, *args) |
| 187 | + |
| 188 | + |
| 189 | +def info(msg, *args): |
| 190 | + getLogger().info(msg, *args) |
| 191 | + |
| 192 | + |
| 193 | +def warning(msg, *args): |
| 194 | + getLogger().warning(msg, *args) |
| 195 | + |
| 196 | + |
| 197 | +def error(msg, *args): |
| 198 | + getLogger().error(msg, *args) |
| 199 | + |
| 200 | + |
| 201 | +def critical(msg, *args): |
| 202 | + getLogger().critical(msg, *args) |
| 203 | + |
| 204 | + |
| 205 | +def exception(msg, *args, exc_info=True): |
| 206 | + getLogger().exception(msg, *args, exc_info=exc_info) |
| 207 | + |
| 208 | + |
| 209 | +def shutdown(): |
| 210 | + for k, logger in _loggers.items(): |
| 211 | + for h in logger.handlers: |
| 212 | + h.close() |
| 213 | + _loggers.pop(logger, None) |
| 214 | + |
| 215 | + |
| 216 | +def addLevelName(level, name): |
| 217 | + _level_dict[level] = name |
| 218 | + |
| 219 | + |
| 220 | +def basicConfig( |
| 221 | + filename=None, |
| 222 | + filemode="a", |
| 223 | + format=None, |
| 224 | + datefmt=None, |
| 225 | + level=WARNING, |
| 226 | + stream=None, |
| 227 | + encoding="UTF-8", |
| 228 | + force=False, |
| 229 | +): |
| 230 | + if "root" not in _loggers: |
| 231 | + _loggers["root"] = Logger("root") |
| 232 | + |
| 233 | + logger = _loggers["root"] |
| 234 | + |
| 235 | + if force or not logger.handlers: |
| 236 | + for h in logger.handlers: |
| 237 | + h.close() |
| 238 | + logger.handlers = [] |
| 239 | + |
| 240 | + if filename is None: |
| 241 | + handler = StreamHandler(stream) |
| 242 | + else: |
| 243 | + handler = FileHandler(filename, filemode, encoding) |
| 244 | + |
| 245 | + # Fix from https://github.com/micropython/micropython-lib/pull/1077 is on the line below: |
| 246 | + handler.setLevel(NOTSET) |
| 247 | + handler.setFormatter(Formatter(format, datefmt)) |
| 248 | + |
| 249 | + logger.setLevel(level) |
| 250 | + logger.addHandler(handler) |
| 251 | + |
| 252 | + |
| 253 | +if hasattr(sys, "atexit"): |
| 254 | + sys.atexit(shutdown) |
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