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123 lines
3.3 KiB
123 lines
3.3 KiB
# -*- coding: utf-8 -*-
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#
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# This file is part of Glances.
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#
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# Copyright (C) 2018 Nicolargo <nicolas@nicolargo.com>
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#
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# Glances is free software; you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Glances is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""Custom logger class."""
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import os
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import json
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import getpass
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import tempfile
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import logging
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import logging.config
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LOG_FILENAME = os.path.join(tempfile.gettempdir(),
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'glances-{}.log'.format(getpass.getuser()))
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# Define the logging configuration
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LOGGING_CFG = {
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"version": 1,
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"disable_existing_loggers": "False",
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"root": {
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"level": "INFO",
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"handlers": ["file", "console"]
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},
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"formatters": {
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"standard": {
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"format": "%(asctime)s -- %(levelname)s -- %(message)s"
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},
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"short": {
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"format": "%(levelname)s -- %(message)s"
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},
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"long": {
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"format": "%(asctime)s -- %(levelname)s -- %(message)s (%(funcName)s in %(filename)s)"
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},
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"free": {
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"format": "%(message)s"
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}
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},
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"handlers": {
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"file": {
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"level": "DEBUG",
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"class": "logging.handlers.RotatingFileHandler",
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"formatter": "standard",
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"filename": LOG_FILENAME
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},
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"console": {
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"level": "CRITICAL",
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"class": "logging.StreamHandler",
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"formatter": "free"
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}
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},
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"loggers": {
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"debug": {
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"handlers": ["file", "console"],
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"level": "DEBUG"
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},
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"verbose": {
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"handlers": ["file", "console"],
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"level": "INFO"
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},
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"standard": {
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"handlers": ["file"],
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"level": "INFO"
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},
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"requests": {
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"handlers": ["file", "console"],
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"level": "ERROR"
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},
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"elasticsearch": {
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"handlers": ["file", "console"],
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"level": "ERROR"
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},
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"elasticsearch.trace": {
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"handlers": ["file", "console"],
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"level": "ERROR"
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}
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}
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}
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def glances_logger(env_key='LOG_CFG'):
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"""Build and return the logger.
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env_key define the env var where a path to a specific JSON logger
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could be defined
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:return: logger -- Logger instance
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"""
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_logger = logging.getLogger()
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# By default, use the LOGGING_CFG logger configuration
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config = LOGGING_CFG
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# Check if a specific configuration is available
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user_file = os.getenv(env_key, None)
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if user_file and os.path.exists(user_file):
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# A user file as been defined. Use it...
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with open(user_file, 'rt') as f:
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config = json.load(f)
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# Load the configuration
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logging.config.dictConfig(config)
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return _logger
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logger = glances_logger()
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