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"""
NETCONF for APK Distributions server:
Logging setup and routines.
Copyright © 2020 Adélie Software in the Public Benefit, Inc.
Released under the terms of the NCSA license. See the LICENSE file included
with this source distribution for more information.
SPDX-License-Identifier: NCSA
"""
import logging
from socket import gethostname
from taillight import Signal
from ncserver.base.util import user_for_session
HOSTNAME_CHANGED = Signal(('node_changed', 'sys:hostname'))
"""The signal that will fire when the hostname is changed."""
HANDLER = logging.StreamHandler()
"""The root log handler."""
LOG_AUTH = logging.getLogger('ncserver.auth')
"""The authentication logger."""
LOG_CONFIG = logging.getLogger('ncserver.config')
"""The configuration logger."""
LOG_OPERATIONAL = logging.getLogger('ncserver.operational')
"""The operational logger."""
def log_config_change(session, node, info):
"""Log a configuration change."""
LOG_CONFIG.notice(
'%s on session %d is editing %s: %s',
user_for_session(session), session.session_id, node, info
)
def configure_format(hostname: str):
"""Configure the formatter for the root log handler."""
fmt = logging.Formatter('%(asctime)s ' + hostname +
' %(name)s %(levelname)s: %(message)s',
'%Y-%m-%dT%H:%M:%S')
HANDLER.setFormatter(fmt)
def configure_logging(level: int):
"""Configure the logging system."""
configure_format(gethostname())
root = logging.getLogger()
HANDLER.setLevel(level)
root.setLevel(level)
root.addHandler(HANDLER)
HOSTNAME_CHANGED.add(configure_format)
if not hasattr(logging, 'NOTICE'):
logging.addLevelName(25, 'NOTICE')
logging.NOTICE = 25
def log_notice(self, message, *args, **kwargs):
"""Log a NOTICE message."""
if self.isEnabledFor(25):
self._log(25, message, args, **kwargs) # pylint: disable=W0212
logging.getLoggerClass().notice = log_notice
def root_notice(message, *args, **kwargs):
"""Log a NOTICE message."""
logging.log(25, message, *args, **kwargs)
logging.notice = root_notice
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