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# Copyright 2015 Intel Corporation.
#
# 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.
"""VNF Controller for the PVP scenario
"""
import logging
from core.vnf_controller import IVnfController
class VnfControllerPVP(IVnfController):
"""VNF controller for the PVP scenario.
Used to set-up and control a VNF provider for the PVP scenario.
Attributes:
_vnf_class: A class object representing the VNF to be used.
_deployment_scenario: A string describing the scenario to set-up in the
constructor.
_vnfs: A list of vnfs controlled by the controller.
"""
#TODO: Decide on contextmanager or __enter/exit__ strategy <MH 2015-05-01>
def __init__(self, vnf_class):
"""Sets up the VNF infrastructure for the PVP deployment scenario.
:param vnf_class: The VNF class to be used.
"""
self._logger = logging.getLogger(__name__)
self._vnf_class = vnf_class()
self._deployment_scenario = "PVP"
self._vnfs = [vnf_class(deployment=self._deployment_scenario)]
self._logger.debug('__init__ with ' + str(self._vnfs[0]))
#TODO call vnf.xxx to carry out the required setup
def get_vnfs(self):
"""See IVnfController for description
"""
self._logger.debug('get_vnfs with ' + str(self._vnfs[0]))
return self._vnfs
def start(self):
"""See IVnfController for description
"""
self._logger.debug('start with ' + str(self._vnfs[0]))
for vnf in self._vnfs:
vnf.start()
def stop(self):
"""See IVnfController for description
"""
self._logger.debug('stop with ' + str(self._vnfs[0]))
self._vnfs[0].stop()
def __enter__(self):
self.start()
def __exit__(self, type_, value, traceback):
self.stop()
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