RO-plugin/osm_ro_plugin/sdn_failing.py

   1 # -*- coding: utf-8 -*-
   2 ##
   3 # Copyright 2018 University of Bristol - High Performance Networks Research
   4 # Group
   5 # All Rights Reserved.
   6 #
   7 # Contributors: Anderson Bravalheri, Dimitrios Gkounis, Abubakar Siddique
   8 # Muqaddas, Navdeep Uniyal, Reza Nejabati and Dimitra Simeonidou
   9 #
  10 # Licensed under the Apache License, Version 2.0 (the "License"); you may
  11 # not use this file except in compliance with the License. You may obtain
  12 # a copy of the License at
  13 #
  14 #         http://www.apache.org/licenses/LICENSE-2.0
  15 #
  16 # Unless required by applicable law or agreed to in writing, software
  17 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  18 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  19 # License for the specific language governing permissions and limitations
  20 # under the License.
  21 #
  22 # For those usages not covered by the Apache License, Version 2.0 please
  23 # contact with: <highperformance-networks@bristol.ac.uk>
  24 #
  25 # Neither the name of the University of Bristol nor the names of its
  26 # contributors may be used to endorse or promote products derived from
  27 # this software without specific prior written permission.
  28 #
  29 # This work has been performed in the context of DCMS UK 5G Testbeds
  30 # & Trials Programme and in the framework of the Metro-Haul project -
  31 # funded by the European Commission under Grant number 761727 through the
  32 # Horizon 2020 and 5G-PPP programmes.
  33 ##
  34
  35 """In the case any error happens when trying to initiate the WIM Connector,
  36 we need a replacement for it, that will throw an error every time we try to
  37 execute any action
  38 """
  39 from osm_ro_plugin.sdnconn import SdnConnectorError
  40
  41
  42 class SdnFailingConnector(object):
  43     """Placeholder for a connector whose incitation failed,
  44     This place holder will just raise an error every time an action is needed
  45     from the connector.
  46
  47     This way we can make sure that all the other parts of the program will work
  48     but the user will have all the information available to fix the problem.
  49     """
  50
  51     def __init__(self, error_msg):
  52         self.error_msg = error_msg
  53
  54     def __call__(self, wim, wim_account, config=None, logger=None):
  55         return self
  56
  57     def vimconnector(self, *args, **kwargs):
  58         raise Exception(self.error_msg)
  59
  60     def check_credentials(self):
  61         raise SdnConnectorError("Impossible to use WIM:\n" + self.error_msg)
  62
  63     def get_connectivity_service_status(self, service_uuid, _conn_info=None):
  64         raise SdnConnectorError(
  65             "Impossible to retrieve status for {}: {}".format(
  66                 service_uuid, self.error_msg
  67             )
  68         )
  69
  70     def create_connectivity_service(self, service_uuid, *args, **kwargs):
  71         raise SdnConnectorError(
  72             "Impossible to create connectivity: {}".format(self.error_msg)
  73         )
  74
  75     def delete_connectivity_service(self, service_uuid, _conn_info=None):
  76         raise SdnConnectorError(
  77             "Impossible to delete {}: {}".format(service_uuid, self.error_msg)
  78         )
  79
  80     def edit_connectivity_service(self, service_uuid, *args, **kwargs):
  81         raise SdnConnectorError(
  82             "Impossible to change connection {}: {}".format(
  83                 service_uuid, self.error_msg
  84             )
  85         )
  86
  87     def clear_all_connectivity_services(self):
  88         raise SdnConnectorError("Impossible to use WIM: {}".format(self.error_msg))
  89
  90     def get_all_active_connectivity_services(self):
  91         raise SdnConnectorError("Impossible to use WIM: {}".format(self.error_msg))