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gns3-server/gns3server/web/logger.py

90 lines
2.7 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (C) 2015 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Provide a pretty logging on console"""
import logging
import sys
class ColouredFormatter(logging.Formatter):
RESET = '\x1B[0m'
RED = '\x1B[31m'
YELLOW = '\x1B[33m'
GREEN = '\x1B[32m'
PINK = '\x1b[35m'
def format(self, record, colour=False):
message = super().format(record)
if not colour:
return message.replace("#RESET#", "")
level_no = record.levelno
if level_no >= logging.CRITICAL:
colour = self.RED
elif level_no >= logging.ERROR:
colour = self.RED
elif level_no >= logging.WARNING:
colour = self.YELLOW
elif level_no >= logging.INFO:
colour = self.GREEN
elif level_no >= logging.DEBUG:
colour = self.PINK
else:
colour = self.RESET
message = message.replace("#RESET#", self.RESET)
message = '{colour}{message}{reset}'.format(colour=colour, message=message, reset=self.RESET)
return message
class ColouredStreamHandler(logging.StreamHandler):
def format(self, record, colour=False):
if not isinstance(self.formatter, ColouredFormatter):
self.formatter = ColouredFormatter()
return self.formatter.format(record, colour)
def emit(self, record):
stream = self.stream
try:
msg = self.format(record, stream.isatty())
stream.write(msg)
stream.write(self.terminator)
self.flush()
except Exception:
self.handleError(record)
def init_logger(level, quiet=False):
stream_handler = ColouredStreamHandler(sys.stdout)
stream_handler.formatter = ColouredFormatter("{asctime} {levelname} {filename}:{lineno}#RESET# {message}", "%Y-%m-%d %H:%M:%S", "{")
if quiet:
stream_handler.addFilter(logging.Filter(name="user_facing"))
logging.getLogger('user_facing').propagate = False
logging.basicConfig(level=level, handlers=[stream_handler])
return logging.getLogger('user_facing')