/usr/lib/python2.7/dist-packages/ovsdbapp/backend/ovs_idl/vlog.py is in python-ovsdbapp 0.9.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | # Copyright (c) 2016 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import collections
import logging
import sys
from ovs import vlog
try:
from eventlet import patcher
# If eventlet is installed and the 'thread' module is patched, we will
# skip setting up the python logger on Windows.
EVENTLET_NONBLOCKING_MODE_ENABLED = patcher.is_monkey_patched('thread')
except ImportError:
EVENTLET_NONBLOCKING_MODE_ENABLED = False
_LOG = logging.getLogger(__name__)
# Map local log LEVELS to local LOG functions
CRITICAL = _LOG.critical
ERROR = _LOG.error
WARN = _LOG.warn
INFO = _LOG.info
DEBUG = _LOG.debug
_LOG_MAPPING = collections.OrderedDict((
(CRITICAL, vlog.Vlog.emer),
(ERROR, vlog.Vlog.err),
(WARN, vlog.Vlog.warn),
(INFO, vlog.Vlog.info),
(DEBUG, vlog.Vlog.dbg),
))
ALL_LEVELS = tuple(_LOG_MAPPING.keys())
def _original_vlog_fn(level):
"""Get the original unpatched OVS vlog function for level"""
return _LOG_MAPPING[level]
def _current_vlog_fn(level):
"""Get the currently used OVS vlog function mapped to level"""
return getattr(vlog.Vlog, _LOG_MAPPING[level].__name__)
def use_python_logger(levels=ALL_LEVELS, max_level=None):
"""Replace the OVS vlog functions with our logger
:param: levels: log levels *from this module* e.g. [vlog.WARN]
:type: levels: iterable
:param: max_level: the maximum level to log
:type: max_level: vlog level, CRITICAL, ERROR, WARN, INFO, or DEBUG
"""
if sys.platform == 'win32' and EVENTLET_NONBLOCKING_MODE_ENABLED:
# NOTE(abalutoiu) When using oslo logging we need to keep in mind that
# it does not work well with native threads. We need to be careful when
# we call eventlet.tpool.execute, and make sure that it will not use
# the oslo logging, since it might cause unexpected hangs if
# greenthreads are used. On Windows we have to use
# eventlet.tpool.execute for a call to the ovs lib which will use
# vlog to log messages. We will skip replacing the OVS IDL logger
# functions on Windows to avoid unexpected hangs with oslo logging
return
if max_level:
levels = levels[:levels.index(max_level) + 1]
# NOTE(twilson) Replace functions directly instead of subclassing so that
# debug messages contain the correct function/filename/line information
for log in levels:
setattr(vlog.Vlog, _LOG_MAPPING[log].__name__, log)
def reset_logger():
"""Reset the OVS vlog functions to their original values"""
for log in ALL_LEVELS:
setattr(vlog.Vlog, _LOG_MAPPING[log].__name__, _LOG_MAPPING[log])
def is_patched(level):
"""Test if the vlog level is patched"""
return _current_vlog_fn(level) != _original_vlog_fn(level)
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