112 lines
3.3 KiB
Python
112 lines
3.3 KiB
Python
# Copyright (C) 2011 Nippon Telegraph and Telephone Corporation.
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# Copyright (C) 2011 Isaku Yamahata <yamahata at valinux co jp>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import print_function
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from os_ken import cfg
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import inspect
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import platform
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import logging
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import logging.config
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import logging.handlers
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import os
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import sys
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try:
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import ConfigParser
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except ImportError:
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import configparser as ConfigParser
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CONF = cfg.CONF
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CONF.register_cli_opts([
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cfg.IntOpt('default-log-level', default=None, help='default log level'),
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cfg.BoolOpt('verbose', default=False, help='show debug output'),
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cfg.BoolOpt('use-stderr', default=True, help='log to standard error'),
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cfg.BoolOpt('use-syslog', default=False, help='output to syslog'),
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cfg.StrOpt('log-dir', default=None, help='log file directory'),
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cfg.StrOpt('log-file', default=None, help='log file name'),
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cfg.StrOpt('log-file-mode', default='0644',
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help='default log file permission'),
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cfg.StrOpt('log-config-file', default=None,
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help='Path to a logging config file to use')
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])
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_EARLY_LOG_HANDLER = None
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def early_init_log(level=None):
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global _EARLY_LOG_HANDLER
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_EARLY_LOG_HANDLER = logging.StreamHandler(sys.stderr)
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log = logging.getLogger()
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log.addHandler(_EARLY_LOG_HANDLER)
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if level is not None:
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log.setLevel(level)
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def _get_log_file():
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if CONF.log_file:
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return CONF.log_file
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if CONF.log_dir:
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return os.path.join(CONF.log_dir,
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os.path.basename(inspect.stack()[-1][1])) + '.log'
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return None
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def init_log():
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global _EARLY_LOG_HANDLER
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log = logging.getLogger()
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if CONF.log_config_file:
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try:
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logging.config.fileConfig(CONF.log_config_file,
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disable_existing_loggers=False)
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except ConfigParser.Error as e:
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print('Failed to parse %s: %s' % (CONF.log_config_file, e),
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file=sys.stderr)
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sys.exit(2)
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return
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if CONF.use_stderr:
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log.addHandler(logging.StreamHandler(sys.stderr))
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if _EARLY_LOG_HANDLER is not None:
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log.removeHandler(_EARLY_LOG_HANDLER)
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_EARLY_LOG_HANDLER = None
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if CONF.use_syslog:
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if platform.system() == 'Darwin':
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address = '/var/run/syslog'
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else:
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address = '/dev/log'
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syslog = logging.handlers.SysLogHandler(address=address)
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log.addHandler(syslog)
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log_file = _get_log_file()
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if log_file is not None:
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log.addHandler(logging.handlers.WatchedFileHandler(log_file))
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mode = int(CONF.log_file_mode, 8)
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os.chmod(log_file, mode)
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if CONF.default_log_level is not None:
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log.setLevel(CONF.default_log_level)
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elif CONF.verbose:
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log.setLevel(logging.DEBUG)
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else:
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log.setLevel(logging.INFO)
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