logilab-common /

# -*- coding: utf-8 -*-
# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact --
# This file is part of logilab-common.
# logilab-common 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 2.1 of the License, or (at your option) any
# later version.
# logilab-common 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 logilab-common.  If not, see <>.

"""Extends the logging module from the standard library.

__docformat__ = "restructuredtext en"

import os
import sys
import logging

from logilab.common.textutils import colorize_ansi

def set_log_methods(cls, logger):
    """bind standard 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 (dictionary).

    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)

    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)
            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
    if logger is None:
        logger = logging.getLogger()
        if not logger.handlers:
    format_msg = logger.handlers[0].formatter._fmt
    fmt = ColorFormatter(format_msg, **kw)

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)
        if debug:
            handler = logging.StreamHandler()
        elif logfile is None:
            if syslog:
                from logging import handlers
                handler = handlers.SysLogHandler()
                handler = logging.StreamHandler()
                if rotation_parameters is None:
                    handler = logging.FileHandler(logfile)
                    from logging.handlers import TimedRotatingFileHandler
                    handler = TimedRotatingFileHandler(logfile, 
            except IOError:
                handler = logging.StreamHandler()
        if logthreshold is None:
            logthreshold = logging.ERROR
        elif isinstance(logthreshold, basestring):
            logthreshold = getattr(logging, THRESHOLD_MAP.get(logthreshold,
    # configure the root logger
    logger = logging.getLogger()
    # 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 and sys.platform != 'win32':
        fmt = ColorFormatter(logformat, logdateformat)
        def col_fact(record):
            if 'XXX' in record.message:
                return 'cyan'
            if 'kick' in record.message:
                return 'red'
        fmt = logging.Formatter(logformat, logdateformat)
    return handler

# map logilab.common.logger thresholds to logging thresholds
                 'LOG_INFO':    'INFO',
                 'LOG_NOTICE':  'INFO',
                 'LOG_WARN':    'WARNING',
                 'LOG_WARNING': 'WARNING',
                 'LOG_ERR':     'ERROR',
                 'LOG_ERROR':   'ERROR',
                 'LOG_CRIT':    'CRITICAL',