/usr/share/pyshared/sugar/logger.py is in python-sugar-0.86 0.86.0-6build1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 | # Copyright (C) 2007 Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
"""Logging service setup.
STABLE.
"""
import array
import collections
import errno
import logging
import sys
import os
import repr as repr_
import decorator
# Let's keep this module self contained so that it can be easily
# pasted in external sugar service like the datastore.
# traces function calls, use SUGAR_LOGGER_LEVEL=trace to enable
TRACE = 5
logging.addLevelName(TRACE, 'TRACE')
def get_logs_dir():
profile = os.environ.get('SUGAR_PROFILE', 'default')
logs_dir = os.environ.get('SUGAR_LOGS_DIR',
os.path.join(os.path.expanduser('~'),
'.sugar', profile, 'logs'))
return logs_dir
_LEVELS = { 'error' : logging.ERROR,
'warning' : logging.WARNING,
'debug' : logging.DEBUG,
'info' : logging.INFO,
'trace' : TRACE,
'all' : 0,
}
def set_level(level):
if level in _LEVELS:
logging.getLogger('').setLevel(_LEVELS[level])
return
try:
logging.getLogger('').setLevel(int(level))
except ValueError:
logging.warning('Invalid log level: %r' % level)
# pylint: disable-msg=E1101,F0401
def _except_hook(exctype, value, traceback):
# Attempt to provide verbose IPython tracebacks.
# Importing IPython is slow, so we import it lazily.
try:
try:
from IPython.core.ultratb import AutoFormattedTB
except ImportError:
from IPython.ultraTB import AutoFormattedTB
sys.excepthook = AutoFormattedTB(mode='Verbose', color_scheme='NoColor')
except ImportError:
sys.excepthook = sys.__excepthook__
sys.excepthook(exctype, value, traceback)
def start(log_filename=None):
# remove existing handlers, or logging.basicConfig() won't have no effect.
root_logger = logging.getLogger('')
for handler in root_logger.handlers:
root_logger.removeHandler(handler)
class SafeLogWrapper(object):
"""Small file-like wrapper to gracefully handle ENOSPC errors when
logging."""
def __init__(self, stream):
self._stream = stream
def write(self, s):
try:
self._stream.write(s)
except IOError, e:
# gracefully deal w/ disk full
if e.errno != errno.ENOSPC:
raise e
def flush(self):
try:
self._stream.flush()
except IOError, e:
# gracefully deal w/ disk full
if e.errno != errno.ENOSPC:
raise e
logging.basicConfig(level=logging.WARNING,
format="%(created)f %(levelname)s %(name)s: %(message)s",
stream=SafeLogWrapper(sys.stderr))
if os.environ.has_key('SUGAR_LOGGER_LEVEL'):
set_level(os.environ['SUGAR_LOGGER_LEVEL'])
if log_filename:
try:
log_path = os.path.join(get_logs_dir(), log_filename + '.log')
log_fd = os.open(log_path, os.O_WRONLY | os.O_CREAT)
os.dup2(log_fd, sys.stdout.fileno())
os.dup2(log_fd, sys.stderr.fileno())
os.close(log_fd)
sys.stdout = SafeLogWrapper(sys.stdout)
sys.stderr = SafeLogWrapper(sys.stderr)
except OSError, e:
# if we're out of space, just continue
if e.errno != errno.ENOSPC:
raise e
sys.excepthook = _except_hook
class TraceRepr(repr_.Repr):
# better handling of subclasses of basic types, e.g. for DBus
_TYPES = [int, long, bool, tuple, list, array.array, set, frozenset,
collections.deque, dict, str]
def repr1(self, x, level):
for t in self._TYPES:
if isinstance(x, t):
return getattr(self, 'repr_'+t.__name__)(x, level)
return repr_.Repr.repr1(self, x, level)
def repr_int(self, x, level):
return repr(x)
def repr_bool(self, x, level):
return repr(x)
def trace(logger=None, logger_name=None, skip_args=None, skip_kwargs=None,
maxsize_list=30, maxsize_dict=30, maxsize_string=300):
if skip_args is None:
skip_args = []
if skip_kwargs is None:
skip_kwargs = []
# size-limit repr()
trace_repr = TraceRepr()
trace_repr.maxlist = maxsize_list
trace_repr.maxdict = maxsize_dict
trace_repr.maxstring = maxsize_string
trace_repr.maxother = maxsize_string
trace_logger = logger or logging.getLogger(logger_name)
def _trace(f, *args, **kwargs):
# don't do expensive formatting if loglevel TRACE is not enabled
enabled = trace_logger.isEnabledFor(TRACE)
logging.debug('logger.trace: mec %r' % enabled)
if enabled:
params_formatted = ", ".join(
[trace_repr.repr(a)
for (idx, a) in enumerate(args) if idx not in skip_args] + \
['%s=%s' % (k,trace_repr.repr(v))
for (k,v) in kwargs.items() if k not in skip_kwargs])
trace_logger.log(TRACE, "%s(%s) invoked", f.__name__,
params_formatted)
try:
res = f(*args, **kwargs)
except:
trace_logger.exception("Exception occured in %s", f.__name__)
raise
if enabled:
trace_logger.log(TRACE, "%s(%s) returned %s", f.__name__,
params_formatted, trace_repr.repr(res))
return res
return decorator.decorator(_trace)
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