1 # Copyright (C) 2021 Wind River Systems, Inc.
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 # from logging import exception
16 # from cgtsclient import exc
17 from o2common.service.client.base_client import BaseClient
18 from o2common.domain import commands
19 from o2common.service.messagebus import MessageBus
20 from o2common.helper import o2logging
21 logger = o2logging.get_logger(__name__)
24 class BaseWatcher(object):
25 def __init__(self, client: BaseClient,
26 bus: MessageBus) -> None:
32 def targetname(self) -> str:
33 return self._targetname()
35 def probe(self, parent: commands.Command = None):
37 cmds = self._probe(parent.data if parent else None)
41 # return self._probe(parent)
43 except Exception as ex:
44 logger.warning("Failed to probe resource due to: " + str(ex))
47 def _probe(self, parent: object = None) -> commands.Command:
48 raise NotImplementedError
50 def _targetname(self):
51 raise NotImplementedError
53 # def _compare_and_update(self, newmodel: StxGenericModel) -> bool:
55 # # localmodel = self._uow.stxobjects.get(ocloudmodel.id)
56 # localmodel = self._uow.stxobjects.get(str(newmodel.id))
58 # logger.info("add entry:" + newmodel.name)
59 # self._uow.stxobjects.add(newmodel)
60 # elif localmodel.is_outdated(newmodel):
61 # logger.info("update entry:" + newmodel.name)
62 # localmodel.update_by(newmodel)
63 # self._uow.stxobjects.update(localmodel)
67 # node to organize watchers in tree hierachy
68 class WatcherTree(object):
69 def __init__(self, watcher: BaseWatcher) -> None:
71 self.watcher = watcher
74 def addchild(self, watcher: BaseWatcher) -> object:
75 child = WatcherTree(watcher)
76 self.children[watcher.targetname()] = child
79 def removechild(self, targetname: str) -> object:
80 return self.children.pop(targetname)
82 # probe all resources by parent, depth = 0 for indefinite recursive
83 def probe(self, parentresource=None, depth: int = 0):
84 logger.debug("probe resources with watcher: "
85 + self.watcher.targetname())
86 childdepth = depth - 1 if depth > 0 else 0
87 resources = self.watcher.probe(parentresource)
88 logger.debug("probe returns " + str(len(resources)) + " resources")
95 for targetname in self.children.keys():
96 self.children[targetname].probe(res, childdepth)