yinxiulin 707c914e30 Nova_APIGW REST API Microversion Support
1. What is the problem
The current Nova_APIGW does not support microversion function, the service
controller uses a fixed API version number to initialize novaclient

2. What is the solution to the problem
When the service controller receives an API request, it will get the
microversion number from request headers , and use this to initialize
novaclient.

For how to get the microversion number, please refer to:
https://specs.openstack.org/openstack/nova-specs/specs/kilo/implemented/api-microversions.html

The microversion supported range is 2.1 to latest version

3. What the features need to be implemented to the Tricircle
   to realize the solution
   Nova_APIGW microversion support added

Change-Id: Idf44c91100e5cb8ad0355164c9be991aa54a652b
2016-09-05 18:33:40 +08:00

84 lines
2.9 KiB
Python

# Copyright (c) 2015 Huawei, Tech. Co,. Ltd.
# All Rights Reserved.
#
# 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 pecan
from oslo_config import cfg
from tricircle.common.i18n import _
from tricircle.common import restapp
from tricircle.nova_apigw.controllers import micro_versions
from tricircle.nova_apigw.controllers import root
from tricircle.nova_apigw.controllers import root_versions
common_opts = [
cfg.IPOpt('bind_host', default='0.0.0.0',
help=_("The host IP to bind to")),
cfg.PortOpt('bind_port', default=19998,
help=_("The port to bind to")),
cfg.IntOpt('api_workers', default=1,
help=_("number of api workers")),
cfg.StrOpt('api_extensions_path', default="",
help=_("The path for API extensions")),
cfg.StrOpt('auth_strategy', default='keystone',
help=_("The type of authentication to use")),
cfg.BoolOpt('allow_bulk', default=True,
help=_("Allow the usage of the bulk API")),
cfg.BoolOpt('allow_pagination', default=False,
help=_("Allow the usage of the pagination")),
cfg.BoolOpt('allow_sorting', default=False,
help=_("Allow the usage of the sorting")),
cfg.StrOpt('pagination_max_limit', default="-1",
help=_("The maximum number of items returned in a single "
"response, value was 'infinite' or negative integer "
"means no limit")),
]
def setup_app(*args, **kwargs):
config = {
'server': {
'port': cfg.CONF.bind_port,
'host': cfg.CONF.bind_host
},
'app': {
'root': 'tricircle.nova_apigw.controllers.root.RootController',
'modules': ['tricircle.nova_apigw'],
'errors': {
400: '/error',
'__force_dict__': True
}
}
}
pecan_config = pecan.configuration.conf_from_dict(config)
app_hooks = [root.ErrorHook()]
app = pecan.make_app(
pecan_config.app.root,
debug=False,
wrap_app=restapp.auth_app,
force_canonical=False,
hooks=app_hooks,
guess_content_type_from_ext=True
)
# get nova api version
app = micro_versions.MicroVersion(app)
# version can be unauthenticated so it goes outside of auth
app = root_versions.Versions(app)
return app