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# vim: tabstop=4 shiftwidth=4 softtabstop=4
import logging
import logging.handlers
import sys
# 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
# File log rotation settings
ROTATE_AMOUNT = 10 # Only keep the past 9 + 1 active
ROTATE_SIZE = 10 * 1024 * 1024 # 10 MB
class ConsoleFormatter(logging.Formatter):
def _get_mini_level(self, record):
if record.levelno in [INFO, NOTSET] or not record.levelname:
return ''
lvlname = record.levelname
return lvlname[0].upper() + ": "
def format(self, record):
record.message = record.getMessage()
rdict = dict(record.__dict__)
rdict['minilevelname'] = self._get_mini_level(record)
# Skipping exception info for the console...
return self._fmt % (rdict)
def setupLogging(level, filename=None, filelevel=logging.DEBUG):
root = getLogger()
consolelg = logging.StreamHandler(sys.stdout)
consolelg.setFormatter(ConsoleFormatter('%(minilevelname)s%(message)s'))
consolelg.setLevel(level)
root.addHandler(consolelg)
if filename:
filelg = logging.handlers.RotatingFileHandler(filename, maxBytes=ROTATE_SIZE, backupCount=ROTATE_AMOUNT)
filelg.setFormatter(logging.Formatter('%(levelname)s: @%(name)s : %(message)s'))
filelg.setLevel(filelevel)
root.addHandler(filelg)
root.setLevel(level)
def logging_set_from_cfg(cfg):
log_cfgs = []
logcfg = util.get_cfg_option_str(cfg, "log_cfg", False)
if logcfg:
# if there is a 'logcfg' entry in the config, respect
# it, it is the old keyname
log_cfgs = [logcfg]
elif "log_cfgs" in cfg:
for cfg in cfg['log_cfgs']:
if isinstance(cfg, list):
log_cfgs.append('\n'.join(cfg))
else:
log_cfgs.append()
if not len(log_cfgs):
sys.stderr.write("Warning, no logging configured\n")
return
for logcfg in log_cfgs:
try:
logging.config.fileConfig(StringIO.StringIO(logcfg))
return
except:
pass
raise Exception("no valid logging found\n")
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
logger = getLogger()
logger.addHandler(NullHandler())
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