osdf/optimizers/routeopt/simple_route_opt.py

   1 # -------------------------------------------------------------------------
   2 #   Copyright (c) 2018 Huawei Intellectual Property
   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 # -------------------------------------------------------------------------
  17 #
  18
  19 import requests
  20 from requests.auth import HTTPBasicAuth
  21
  22
  23 class RouteOpt:
  24
  25     """
  26     This values will need to deleted..
  27     only added for the debug purpose
  28     """
  29     # DNS server and standard port of AAI..
  30     # TODO: read the port from the configuration and add to DNS
  31     aai_host = "https://aai.api.simpledemo.onap.org:8443"
  32     aai_headers = {
  33         "X-TransactionId": "9999",
  34         "X-FromAppId": "OOF",
  35         "Content-Type": "application/json",
  36         "Real-Time": "true"
  37     }
  38
  39     def isCrossONAPLink(self, logical_link):
  40         """
  41         This method checks if cross link is cross onap
  42         :param logical_link:
  43         :return:
  44         """
  45         for relationship in logical_link["logical-links"]["relationsihp-list"]["relationship"]:
  46             if relationship["related-to"] == "p-interface":
  47                 if "external" in relationship["related-link"]:
  48                     return True
  49         return False
  50
  51     def getRoute(self, request):
  52         """
  53         This method checks
  54         :param logical_link:
  55         :return:
  56         """
  57
  58         src_access_node_id = request["srcPort"]["src-access-node-id"]
  59         dst_access_node_id = request["dstPort"]["dst-access-node-id"]
  60
  61         # for the case of request for same domain, return the same node with destination update
  62         if src_access_node_id == dst_access_node_id:
  63             return {
  64                 [
  65                     {
  66                         "access-topology-id": request["srcPort"]["src-access-topology-id"],
  67                         "access-client-id": request["srcPort"]["access-client-id"],
  68                         "access-provider-id": request["srcPort"]["access-provider-id"],
  69                         "access-node-id": request["srcPort"]["access-node-id"],
  70                         "src-access-ltp-id": request["srcPort"]["src-access-ltp-id"],
  71                         "dst-access-ltp-id": request["dstPort"]["dst-access-ltp-id"]
  72                     }
  73                 ]
  74             }
  75
  76         ingress_p_interface = None
  77         egress_p_interface = None
  78
  79         logical_links = self.get_logical_links()
  80
  81         # take the logical link where both the p-interface in same onap
  82         if logical_links != None:
  83             for logical_link in logical_links["results"]:
  84                 if not self.isCrossONAPLink(logical_link):
  85
  86                     # link is in local ONAP
  87                     for relationship in logical_link["logical-links"]["relationsihp-list"]["relationship"]:
  88                         if relationship["related-to"] == "p-interface":
  89                             if src_access_node_id in relationship["related-link"]:
  90                                 ingress_p_interface = relationship["related-link"].split("/")[-1]
  91                             if dst_access_node_id in relationship["related-link"]:
  92                                 egress_p_interface = relationship["related-link"].split("/")[-1]
  93
  94             return {
  95                 [
  96                     {
  97                         "access-topology-id": request["srcPort"]["src-access-topology-id"],
  98                         "access-client-id": request["srcPort"]["access-client-id"],
  99                         "access-provider-id": request["srcPort"]["access-provider-id"],
 100                         "access-node-id": request["srcPort"]["access-node-id"],
 101                         "src-access-ltp-id": request["srcPort"]["src-access-ltp-id"],
 102                         "dst-access-ltp-id": ingress_p_interface
 103                     },
 104                     {
 105                         "access-topology-id": request["dstPort"]["access-topology-id"],
 106                         "access-client-id": request["dstPort"]["access-client-id"],
 107                         "access-provider-id": request["dstPort"]["access-provider-id"],
 108                         "access-node-id": request["dstPort"]["access-node-id"],
 109                         "src-access-ltp-id": egress_p_interface,
 110                         "dst-access-ltp-id": request["dstPort"]["dst-access-ltp-id"]
 111                     }
 112                 ]
 113             }
 114
 115
 116
 117     def get_pinterface(self, url):
 118         """
 119         This method returns details for p interface
 120         :return: details of p interface
 121         """
 122         aai_req_url = self.aai_host + url
 123         response = requests.get(aai_req_url,
 124                                 headers=self.aai_headers,
 125                                 auth=HTTPBasicAuth("", ""))
 126
 127         if response.status_code == 200:
 128             return response.json
 129
 130
 131     def get_logical_links(self):
 132         """
 133         This method returns list of all cross ONAP links
 134         from /aai/v14/network/logical-links?operation-status="Up"
 135         :return: logical-links[]
 136         """
 137         logical_link_url = "/aai/v14/network/logical-links?operation-status=\"Up\""
 138         aai_req_url = self.aai_host + logical_link_url
 139
 140         response = requests.get(aai_req_url,
 141                      headers=self.aai_headers,
 142                      auth=HTTPBasicAuth("", ""))
 143
 144         if response.status_code == 200:
 145             return response.json