tacker/tacker/sol_refactored/common/monitoring_plugin_base.py

65 lines
1.9 KiB
Python

# Copyright (C) 2022 Fujitsu
# 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.
from importlib import import_module
from oslo_log import log as logging
from tacker.sol_refactored.common import exceptions as sol_ex
LOG = logging.getLogger(__name__)
def get_class(package_name, class_name):
module = import_module(package_name)
_class = getattr(module, class_name)
if not issubclass(_class, MonitoringPlugin):
LOG.error(f"Loading plugin failed: {package_name}.{class_name}.")
raise sol_ex.MonitoringPluginClassError(class_name=class_name)
return _class
class MonitoringPlugin():
@staticmethod
def get_instance(_class):
return _class.instance()
def set_callback(self, notification_callback):
pass
def create_job(self, **kwargs):
pass
def delete_job(self, **kwargs):
pass
def alert(self, **kwargs):
pass
class MonitoringPluginStub(MonitoringPlugin):
_instance = None
@staticmethod
def instance():
if not MonitoringPluginStub._instance:
MonitoringPluginStub()
return MonitoringPluginStub._instance
def __init__(self):
if MonitoringPluginStub._instance:
raise SystemError(
"Not constructor but instance() should be used.")
MonitoringPluginStub._instance = self