aaf0fef1ca
Bug #1073194 We use openstack common log to do logging. At the same time, we will use quantum logger as our top logger, so that all sub loggers will be set according to quantum.conf Change-Id: I5adf72e6031ad437e05c3521864a83757b3e7887
137 lines
4.6 KiB
Python
137 lines
4.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2011, Nicira Networks, 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.
|
|
#
|
|
# Borrowed from nova code base, more utilities will be added/borrowed as and
|
|
# when needed.
|
|
# @author: Somik Behera, Nicira Networks, Inc.
|
|
|
|
"""Utilities and helper functions."""
|
|
|
|
|
|
import os
|
|
import signal
|
|
import uuid
|
|
|
|
from eventlet.green import subprocess
|
|
|
|
from quantum.openstack.common import cfg
|
|
from quantum.openstack.common import log as logging
|
|
|
|
TIME_FORMAT = "%Y-%m-%dT%H:%M:%SZ"
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
def boolize(subject):
|
|
"""
|
|
Quak like a boolean
|
|
"""
|
|
if isinstance(subject, bool):
|
|
return subject
|
|
elif isinstance(subject, basestring):
|
|
sub = subject.strip().lower()
|
|
if sub == 'true':
|
|
return True
|
|
elif sub == 'false':
|
|
return False
|
|
return subject
|
|
|
|
|
|
def read_cached_file(filename, cache_info, reload_func=None):
|
|
"""Read from a file if it has been modified.
|
|
|
|
:param cache_info: dictionary to hold opaque cache.
|
|
:param reload_func: optional function to be called with data when
|
|
file is reloaded due to a modification.
|
|
|
|
:returns: data from file
|
|
|
|
"""
|
|
mtime = os.path.getmtime(filename)
|
|
if not cache_info or mtime != cache_info.get('mtime'):
|
|
LOG.debug(_("Reloading cached file %s") % filename)
|
|
with open(filename) as fap:
|
|
cache_info['data'] = fap.read()
|
|
cache_info['mtime'] = mtime
|
|
if reload_func:
|
|
reload_func(cache_info['data'])
|
|
return cache_info['data']
|
|
|
|
|
|
def find_config_file(options, config_file):
|
|
"""
|
|
Return the first config file found.
|
|
|
|
We search for the paste config file in the following order:
|
|
* If --config-file option is used, use that
|
|
* Search for the configuration files via common cfg directories
|
|
:retval Full path to config file, or None if no config file found
|
|
"""
|
|
fix_path = lambda p: os.path.abspath(os.path.expanduser(p))
|
|
if options.get('config_file'):
|
|
if os.path.exists(options['config_file']):
|
|
return fix_path(options['config_file'])
|
|
|
|
dir_to_common = os.path.dirname(os.path.abspath(__file__))
|
|
root = os.path.join(dir_to_common, '..', '..', '..', '..')
|
|
# Handle standard directory search for the config file
|
|
config_file_dirs = [fix_path(os.path.join(os.getcwd(), 'etc')),
|
|
fix_path(os.path.join('~', '.quantum-venv', 'etc',
|
|
'quantum')),
|
|
fix_path('~'),
|
|
os.path.join(cfg.CONF.state_path, 'etc'),
|
|
os.path.join(cfg.CONF.state_path, 'etc', 'quantum'),
|
|
fix_path(os.path.join('~', '.local',
|
|
'etc', 'quantum')),
|
|
'/usr/etc/quantum',
|
|
'/usr/local/etc/quantum',
|
|
'/etc/quantum/',
|
|
'/etc']
|
|
|
|
if 'plugin' in options:
|
|
config_file_dirs = [
|
|
os.path.join(x, 'quantum', 'plugins', options['plugin'])
|
|
for x in config_file_dirs
|
|
]
|
|
|
|
if os.path.exists(os.path.join(root, 'plugins')):
|
|
plugins = [fix_path(os.path.join(root, 'plugins', p, 'etc'))
|
|
for p in os.listdir(os.path.join(root, 'plugins'))]
|
|
plugins = [p for p in plugins if os.path.isdir(p)]
|
|
config_file_dirs.extend(plugins)
|
|
|
|
for cfg_dir in config_file_dirs:
|
|
cfg_file = os.path.join(cfg_dir, config_file)
|
|
if os.path.exists(cfg_file):
|
|
return cfg_file
|
|
|
|
|
|
def str_uuid():
|
|
"""Return a uuid as a string"""
|
|
return str(uuid.uuid4())
|
|
|
|
|
|
def _subprocess_setup():
|
|
# Python installs a SIGPIPE handler by default. This is usually not what
|
|
# non-Python subprocesses expect.
|
|
signal.signal(signal.SIGPIPE, signal.SIG_DFL)
|
|
|
|
|
|
def subprocess_popen(args, stdin=None, stdout=None, stderr=None, shell=False,
|
|
env=None):
|
|
return subprocess.Popen(args, shell=shell, stdin=stdin, stdout=stdout,
|
|
stderr=stderr, preexec_fn=_subprocess_setup,
|
|
env=env)
|