/usr/lib/python3/dist-packages/cloudinit/log.py is in cloud-init 18.2-14-g6d48d265-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | # Copyright (C) 2012 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
# Copyright (C) 2012 Yahoo! Inc.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
# Author: Joshua Harlow <harlowja@yahoo-inc.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
import logging
import logging.config
import logging.handlers
import collections
import os
import sys
import six
from six import StringIO
import time
# Logging levels for easy access
CRITICAL = logging.CRITICAL
FATAL = logging.FATAL
ERROR = logging.ERROR
WARNING = logging.WARNING
WARN = logging.WARN
INFO = logging.INFO
DEBUG = logging.DEBUG
NOTSET = logging.NOTSET
# Default basic format
DEF_CON_FORMAT = '%(asctime)s - %(filename)s[%(levelname)s]: %(message)s'
# Always format logging timestamps as UTC time
logging.Formatter.converter = time.gmtime
def setupBasicLogging(level=DEBUG):
root = logging.getLogger()
console = logging.StreamHandler(sys.stderr)
console.setFormatter(logging.Formatter(DEF_CON_FORMAT))
console.setLevel(level)
root.addHandler(console)
root.setLevel(level)
def flushLoggers(root):
if not root:
return
for h in root.handlers:
if isinstance(h, (logging.StreamHandler)):
try:
h.flush()
except IOError:
pass
flushLoggers(root.parent)
def setupLogging(cfg=None):
# See if the config provides any logging conf...
if not cfg:
cfg = {}
log_cfgs = []
log_cfg = cfg.get('logcfg')
if log_cfg and isinstance(log_cfg, six.string_types):
# If there is a 'logcfg' entry in the config,
# respect it, it is the old keyname
log_cfgs.append(str(log_cfg))
elif "log_cfgs" in cfg:
for a_cfg in cfg['log_cfgs']:
if isinstance(a_cfg, six.string_types):
log_cfgs.append(a_cfg)
elif isinstance(a_cfg, (collections.Iterable)):
cfg_str = [str(c) for c in a_cfg]
log_cfgs.append('\n'.join(cfg_str))
else:
log_cfgs.append(str(a_cfg))
# See if any of them actually load...
am_tried = 0
for log_cfg in log_cfgs:
try:
am_tried += 1
# Assume its just a string if not a filename
if log_cfg.startswith("/") and os.path.isfile(log_cfg):
# Leave it as a file and do not make it look like
# something that is a file (but is really a buffer that
# is acting as a file)
pass
else:
log_cfg = StringIO(log_cfg)
# Attempt to load its config
logging.config.fileConfig(log_cfg)
# The first one to work wins!
return
except Exception:
# We do not write any logs of this here, because the default
# configuration includes an attempt at using /dev/log, followed
# up by writing to a file. /dev/log will not exist in very early
# boot, so an exception on that is expected.
pass
# If it didn't work, at least setup a basic logger (if desired)
basic_enabled = cfg.get('log_basic', True)
sys.stderr.write(("WARN: no logging configured!"
" (tried %s configs)\n") % (am_tried))
if basic_enabled:
sys.stderr.write("Setting up basic logging...\n")
setupBasicLogging()
def getLogger(name='cloudinit'):
return logging.getLogger(name)
# Fixes this annoyance...
# No handlers could be found for logger XXX annoying output...
try:
from logging import NullHandler
except ImportError:
class NullHandler(logging.Handler):
def emit(self, record):
pass
def _resetLogger(log):
if not log:
return
handlers = list(log.handlers)
for h in handlers:
h.flush()
h.close()
log.removeHandler(h)
log.setLevel(NOTSET)
log.addHandler(NullHandler())
def resetLogging():
_resetLogger(logging.getLogger())
_resetLogger(getLogger())
resetLogging()
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