mixmatch/mixmatch/extend/__init__.py

46 lines
1.3 KiB
Python

# Copyright 2017 Massachusetts Open Cloud
#
# 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.
from mixmatch import config
from stevedore import extension
CONF = config.CONF
LOG = config.LOG
EXTENSION_MANAGER = None # type: extension.ExtensionManager
def load_extensions():
global EXTENSION_MANAGER
EXTENSION_MANAGER = extension.ExtensionManager(
namespace='mixmatch.extend',
invoke_on_load=True
)
def get_matched_extensions(request):
"""Return list of matched extensions for request
:type request: mixmatch.proxy.RequestDetails
:rtype: List[mixmatch.extend.base.Extension]
"""
def _match(e):
return e.obj if e.obj.matches(request) else None
result = EXTENSION_MANAGER.map(_match)
return filter(bool, result)