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144 lines
3.8 KiB
144 lines
3.8 KiB
# Copyright 2010 Google Inc. All Rights Reserved. |
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from itertools import chain |
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import gzip |
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import logging |
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import logging.handlers |
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import time |
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import traceback |
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def SetUpRootLogger(filename=None, level=None, display_flags={}): |
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console_handler = logging.StreamHandler() |
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console_handler.setFormatter(CustomFormatter(AnsiColorCoder(), display_flags)) |
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logging.root.addHandler(console_handler) |
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if filename: |
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file_handler = logging.handlers.RotatingFileHandler( |
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filename, |
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maxBytes=10 * 1024 * 1024, |
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backupCount=9, |
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delay=True) |
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file_handler.setFormatter(CustomFormatter(NullColorCoder(), display_flags)) |
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logging.root.addHandler(file_handler) |
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if level: |
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logging.root.setLevel(level) |
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class NullColorCoder(object): |
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def __call__(self, *args): |
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return '' |
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class AnsiColorCoder(object): |
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CODES = {'reset': (0,), |
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'bold': (1, 22), |
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'italics': (3, 23), |
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'underline': (4, 24), |
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'inverse': (7, 27), |
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'strikethrough': (9, 29), |
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'black': (30, 40), |
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'red': (31, 41), |
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'green': (32, 42), |
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'yellow': (33, 43), |
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'blue': (34, 44), |
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'magenta': (35, 45), |
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'cyan': (36, 46), |
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'white': (37, 47)} |
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def __call__(self, *args): |
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codes = [] |
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for arg in args: |
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if arg.startswith('bg-') or arg.startswith('no-'): |
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codes.append(self.CODES[arg[3:]][1]) |
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else: |
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codes.append(self.CODES[arg][0]) |
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return '\033[%sm' % ';'.join(map(str, codes)) |
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class CustomFormatter(logging.Formatter): |
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COLORS = {'DEBUG': ('white',), |
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'INFO': ('green',), |
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'WARN': ('yellow', 'bold'), |
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'ERROR': ('red', 'bold'), |
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'CRIT': ('red', 'inverse', 'bold')} |
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def __init__(self, coder, display_flags={}): |
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items = [] |
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if display_flags.get('datetime', True): |
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items.append('%(asctime)s') |
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if display_flags.get('level', True): |
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items.append('%(levelname)s') |
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if display_flags.get('name', True): |
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items.append(coder('cyan') + '[%(threadName)s:%(name)s]' + coder('reset')) |
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items.append('%(prefix)s%(message)s') |
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logging.Formatter.__init__(self, fmt=' '.join(items)) |
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self._coder = coder |
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def formatTime(self, record): |
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ct = self.converter(record.created) |
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t = time.strftime('%Y-%m-%d %H:%M:%S', ct) |
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return '%s.%02d' % (t, record.msecs / 10) |
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def formatLevelName(self, record): |
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if record.levelname in ['WARNING', 'CRITICAL']: |
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levelname = record.levelname[:4] |
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else: |
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levelname = record.levelname |
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return ''.join([self._coder(*self.COLORS[levelname]), levelname, |
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self._coder('reset')]) |
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def formatMessagePrefix(self, record): |
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try: |
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return ' %s%s:%s ' % (self._coder('black', 'bold'), record.prefix, |
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self._coder('reset')) |
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except AttributeError: |
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return '' |
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def format(self, record): |
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if record.exc_info: |
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if not record.exc_text: |
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record.exc_text = self.formatException(record.exc_info) |
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else: |
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record.exc_text = '' |
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fmt = record.__dict__.copy() |
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fmt.update({'levelname': self.formatLevelName(record), |
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'asctime': self.formatTime(record), |
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'prefix': self.formatMessagePrefix(record)}) |
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s = [] |
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for line in chain(record.getMessage().splitlines(), |
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record.exc_text.splitlines()): |
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fmt['message'] = line |
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s.append(self._fmt % fmt) |
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return '\n'.join(s) |
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class CompressedFileHandler(logging.FileHandler): |
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def _open(self): |
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return gzip.open(self.baseFilename + '.gz', self.mode, 9) |
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def HandleUncaughtExceptions(fun): |
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"""Catches all exceptions that would go outside decorated fun scope.""" |
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def _Interceptor(*args, **kwargs): |
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try: |
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return fun(*args, **kwargs) |
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except StandardError: |
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logging.exception('Uncaught exception:') |
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return _Interceptor
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