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# -*- coding: utf-8 -*-
"""Extends the logging module from the standard library.
:copyright: 2000-2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: General Public License version 2 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"
import os
import sys
import logging
from logilab.common.textutils import colorize_ansi
def set_log_methods(cls, logger):
"""bind standart logger's methods as methods on the class"""
cls.__logger = logger
for attr in ('debug', 'info', 'warning', 'error', 'critical', 'exception'):
setattr(cls, attr, getattr(logger, attr))
def xxx_cyan(record):
if 'XXX' in record.message:
return 'cyan'
class ColorFormatter(logging.Formatter):
"""
A color Formatter for the logging standard module.
By default, colorize CRITICAL and ERROR in red, WARNING in orange, INFO in
green and DEBUG in yellow.
self.colors is customizable via the 'color' constructor argument (dictionnary).
self.colorfilters is a list of functions that get the LogRecord
and return a color name or None.
"""
def __init__(self, fmt=None, datefmt=None, colors=None):
logging.Formatter.__init__(self, fmt, datefmt)
self.colorfilters = []
self.colors = {'CRITICAL': 'red',
'ERROR': 'red',
'WARNING': 'magenta',
'INFO': 'green',
'DEBUG': 'yellow',
}
if colors is not None:
assert isinstance(colors, dict)
self.colors.update(colors)
def format(self, record):
msg = logging.Formatter.format(self, record)
if record.levelname in self.colors:
color = self.colors[record.levelname]
return colorize_ansi(msg, color)
else:
for cf in self.colorfilters:
color = cf(record)
if color:
return colorize_ansi(msg, color)
return msg
def set_color_formatter(logger=None, **kw):
"""
Install a color formatter on the 'logger'. If not given, it will
defaults to the default logger.
Any additional keyword will be passed as-is to the ColorFormatter
constructor.
"""
if logger is None:
logger = logging.getLogger()
if not logger.handlers:
logging.basicConfig()
format_msg = logger.handlers[0].formatter._fmt
fmt = ColorFormatter(format_msg, **kw)
fmt.colorfilters.append(xxx_cyan)
logger.handlers[0].setFormatter(fmt)
LOG_FORMAT = '%(asctime)s - (%(name)s) %(levelname)s: %(message)s'
LOG_DATE_FORMAT = '%Y-%m-%d %H:%M:%S'
def init_log(debug=False, syslog=False, logthreshold=None, logfile=None,
logformat=LOG_FORMAT, logdateformat=LOG_DATE_FORMAT):
"""init the log service"""
if os.environ.get('APYCOT_ROOT'):
logthreshold = logging.CRITICAL
# redirect logs to stdout to avoid apycot output parsing failure
handler = logging.StreamHandler(sys.stdout)
else:
if debug:
handler = logging.StreamHandler()
elif logfile is None:
if syslog:
from logging import handlers
handler = handlers.SysLogHandler()
else:
handler = logging.StreamHandler()
else:
try:
handler = logging.FileHandler(logfile)
except IOError:
handler = logging.StreamHandler()
if logthreshold is None:
logthreshold = logging.ERROR
elif isinstance(logthreshold, str):
logthreshold = getattr(logging, THRESHOLD_MAP.get(logthreshold,
logthreshold))
# configure the root logger
logger = logging.getLogger()
logger.setLevel(logthreshold)
# only addHandler and removeHandler method while I would like a
# setHandler method, so do it this way :$
logger.handlers = [handler]
isatty = hasattr(sys.__stdout__, 'isatty') and sys.__stdout__.isatty()
if debug and isatty:
fmt = ColorFormatter(logformat, logdateformat)
def col_fact(record):
if 'XXX' in record.message:
return 'cyan'
if 'kick' in record.message:
return 'red'
fmt.colorfilters.append(col_fact)
else:
fmt = logging.Formatter(logformat, logdateformat)
handler.setFormatter(fmt)
return handler
# map logilab.common.logger thresholds to logging thresholds
THRESHOLD_MAP = {'LOG_DEBUG': 'DEBUG',
'LOG_INFO': 'INFO',
'LOG_NOTICE': 'INFO',
'LOG_WARN': 'WARNING',
'LOG_ERR': 'ERROR',
'LOG_CRIT': 'CRITICAL',
}
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