bf8f99e0d7
Added colon after ":returns" according to: http://docs.openstack.org/developer/hacking blank lines are added before the param lines Change-Id: Icfce30824be23a4b221900e49c33fe8b346efa18
90 lines
3.5 KiB
Python
90 lines
3.5 KiB
Python
#
|
|
# Copyright 2015 OpenStack Foundation
|
|
#
|
|
# 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.
|
|
|
|
"""The code related to integration between oslo.cache module and heat."""
|
|
|
|
from oslo_cache import core
|
|
from oslo_config import cfg
|
|
|
|
from heat.common.i18n import _
|
|
|
|
|
|
def register_cache_configurations(conf):
|
|
"""Register all configurations required for oslo.cache.
|
|
|
|
The procedure registers all configurations required for oslo.cache.
|
|
It should be called before configuring of cache region
|
|
|
|
:param conf: instance of heat configuration
|
|
:returns: updated heat configuration
|
|
"""
|
|
# register global configurations for caching in heat
|
|
core.configure(conf)
|
|
|
|
# register heat specific configurations
|
|
constraint_cache_group = cfg.OptGroup('constraint_validation_cache')
|
|
constraint_cache_opts = [
|
|
cfg.IntOpt('expiration_time', default=60,
|
|
help=_(
|
|
'TTL, in seconds, for any cached item in the '
|
|
'dogpile.cache region used for caching of validation '
|
|
'constraints.')),
|
|
cfg.BoolOpt("caching", default=True,
|
|
help=_(
|
|
'Toggle to enable/disable caching when Orchestration '
|
|
'Engine validates property constraints of stack.'
|
|
'During property validation with constraints '
|
|
'Orchestration Engine caches requests to other '
|
|
'OpenStack services. Please note that the global '
|
|
'toggle for oslo.cache(enabled=True in [cache] group) '
|
|
'must be enabled to use this feature.'))
|
|
]
|
|
conf.register_group(constraint_cache_group)
|
|
conf.register_opts(constraint_cache_opts, group=constraint_cache_group)
|
|
|
|
extension_cache_group = cfg.OptGroup('service_extension_cache')
|
|
extension_cache_opts = [
|
|
cfg.IntOpt('expiration_time', default=3600,
|
|
help=_(
|
|
'TTL, in seconds, for any cached item in the '
|
|
'dogpile.cache region used for caching of service '
|
|
'extensions.')),
|
|
cfg.BoolOpt('caching', default=True,
|
|
help=_(
|
|
'Toggle to enable/disable caching when Orchestration '
|
|
'Engine retrieves extensions from other OpenStack '
|
|
'services. Please note that the global toggle for '
|
|
'oslo.cache(enabled=True in [cache] group) must be '
|
|
'enabled to use this feature.'))
|
|
]
|
|
conf.register_group(extension_cache_group)
|
|
conf.register_opts(extension_cache_opts, group=extension_cache_group)
|
|
|
|
return conf
|
|
|
|
|
|
# variable that stores an initialized cache region for heat
|
|
_REGION = None
|
|
|
|
|
|
def get_cache_region():
|
|
global _REGION
|
|
if not _REGION:
|
|
_REGION = core.configure_cache_region(
|
|
conf=register_cache_configurations(cfg.CONF),
|
|
region=core.create_region())
|
|
return _REGION
|