| William Kurkian | 6f436d0 | 2019-02-06 16:25:01 -0500 | [diff] [blame^] | 1 | # |
| 2 | # Copyright 2018 the original author or authors. |
| 3 | # |
| 4 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | # you may not use this file except in compliance with the License. |
| 6 | # You may obtain a copy of the License at |
| 7 | # |
| 8 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | # |
| 10 | # Unless required by applicable law or agreed to in writing, software |
| 11 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | # See the License for the specific language governing permissions and |
| 14 | # limitations under the License. |
| 15 | # |
| 16 | from task import Task |
| 17 | from twisted.internet import reactor |
| 18 | from twisted.internet.defer import inlineCallbacks, failure |
| 19 | from voltha.extensions.omci.omci_defs import ReasonCodes, EntityOperations |
| 20 | from voltha.extensions.omci.omci_frame import OmciFrame |
| 21 | from voltha.extensions.omci.omci_messages import OmciDelete |
| 22 | |
| 23 | RC = ReasonCodes |
| 24 | OP = EntityOperations |
| 25 | |
| 26 | |
| 27 | class DeletePMException(Exception): |
| 28 | pass |
| 29 | |
| 30 | |
| 31 | class OmciDeletePMRequest(Task): |
| 32 | """ |
| 33 | OpenOMCI routine to delete the requested PM Interval MEs |
| 34 | """ |
| 35 | task_priority = Task.DEFAULT_PRIORITY |
| 36 | name = "ONU OMCI Delete PM ME Task" |
| 37 | |
| 38 | def __init__(self, omci_agent, device_id, me_set, exclusive=False): |
| 39 | """ |
| 40 | Class initialization |
| 41 | |
| 42 | :param omci_agent: (OmciAdapterAgent) OMCI Adapter agent |
| 43 | :param me_set: (set) Tuples of class_id / entity_id to create |
| 44 | :param exclusive: (bool) True if this Create request Task exclusively own the |
| 45 | OMCI-CC while running. Default: False |
| 46 | """ |
| 47 | super(OmciDeletePMRequest, self).__init__(OmciDeletePMRequest.name, |
| 48 | omci_agent, |
| 49 | device_id, |
| 50 | priority=OmciDeletePMRequest.task_priority, |
| 51 | exclusive=exclusive) |
| 52 | self._device = omci_agent.get_device(device_id) |
| 53 | self._me_tuples = me_set |
| 54 | self._local_deferred = None |
| 55 | |
| 56 | def cancel_deferred(self): |
| 57 | super(OmciDeletePMRequest, self).cancel_deferred() |
| 58 | |
| 59 | d, self._local_deferred = self._local_deferred, None |
| 60 | try: |
| 61 | if d is not None and not d.called: |
| 62 | d.cancel() |
| 63 | except: |
| 64 | pass |
| 65 | |
| 66 | def start(self): |
| 67 | """ Start task """ |
| 68 | super(OmciDeletePMRequest, self).start() |
| 69 | self._local_deferred = reactor.callLater(0, self.perform_delete) |
| 70 | |
| 71 | @inlineCallbacks |
| 72 | def perform_delete(self): |
| 73 | """ Perform the delete requests """ |
| 74 | self.log.debug('perform-delete') |
| 75 | |
| 76 | try: |
| 77 | for me in self._me_tuples: |
| 78 | class_id = me[0] |
| 79 | entity_id = me[1] |
| 80 | |
| 81 | frame = OmciFrame( |
| 82 | transaction_id=None, |
| 83 | message_type=OmciDelete.message_id, |
| 84 | omci_message=OmciDelete( |
| 85 | entity_class=class_id, |
| 86 | entity_id=entity_id |
| 87 | ) |
| 88 | ) |
| 89 | self.strobe_watchdog() |
| 90 | results = yield self._device.omci_cc.send(frame) |
| 91 | |
| 92 | status = results.fields['omci_message'].fields['success_code'] |
| 93 | self.log.debug('perform-delete-status', status=status) |
| 94 | |
| 95 | # Did it fail, it instance does not exist, not an error |
| 96 | if status != RC.Success.value and status != RC.UnknownInstance.value: |
| 97 | msg = 'ME: {}, entity: {} failed with status {}'.format(class_id, |
| 98 | entity_id, |
| 99 | status) |
| 100 | raise DeletePMException(msg) |
| 101 | |
| 102 | self.log.debug('delete-pm-success', class_id=class_id, |
| 103 | entity_id=entity_id) |
| 104 | self.deferred.callback(self) |
| 105 | |
| 106 | except Exception as e: |
| 107 | self.log.exception('perform-create', e=e) |
| 108 | self.deferred.errback(failure.Failure(e)) |