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