Bug 1212

Change-Id: Ibc5da0e568f4b856146ecaca6fdce4ea7417208b
Signed-off-by: magnussonl <lars-goran.magnusson@arctoslabs.com>

Dockerfile

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM ubuntu:16.04
+FROM ubuntu:18.04
 
 RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get -y install git tox make python3 python3-pip python-all && \

osm_pla/server/server.py

@@ -18,6 +18,7 @@
 
 import asyncio
 import logging
+import itertools
 from pathlib import Path
 
 import yaml
@@ -152,6 +153,21 @@ class Server:
             data = yaml.safe_load_all(pil_fd)
             return next(data)
 
+    def _create_vnf_id_maps(self, nsd):
+        """
+        map identifier for 'member-vnf-index' in nsd to syntax that is safe for mzn
+
+         return tuples with mappings {<adjusted id>: <original id>} and {<original id>: <adjusted id>}
+        """
+        next_idx = itertools.count()
+        member_vnf_index2mzn = {e['member-vnf-index']: 'VNF' + str(next(next_idx)) for e in
+                                nsd['constituent-vnfd']}
+
+        # reverse the name map dictionary, used when the placement result is remapped
+        mzn_name2member_vnf_index = {v: k for k, v in member_vnf_index2mzn.items()}
+
+        return member_vnf_index2mzn, mzn_name2member_vnf_index
+
     async def get_placement(self, nslcmop_id):
         """
         - Collects and prepares placement information.
@@ -166,7 +182,14 @@ class Server:
         try:
             nslcmop = self._get_nslcmop(nslcmop_id)
             nsd = self._get_nsd(nslcmop['operationParams']['nsdId'])
-            self.log.info("nsd: {}".format(nsd))
+            member_vnf_index2mzn, mzn2member_vnf_index = self._create_vnf_id_maps(nsd)
+            # adjust vnf identifiers
+            for e in nsd['constituent-vnfd']:
+                e['member-vnf-index'] = member_vnf_index2mzn[e['member-vnf-index']]
+            for vld in nsd['vld']:
+                for cp_ref in vld['vnfd-connection-point-ref']:
+                    cp_ref['member-vnf-index-ref'] = member_vnf_index2mzn[cp_ref['member-vnf-index-ref']]
+            self.log.info("adjusted nsd: {}".format(nsd))
             projects = self._get_projects()
             self.log.info("projects: {}".format(projects))
             nslcmop_project = nslcmop['_admin']['projects_read'][0]
@@ -176,8 +199,11 @@ class Server:
             vims_information = {_['name']: _['_id'] for _ in vim_accounts_data}
             price_list = self._get_vnf_price_list(Server.vnf_price_list_file, projects[nslcmop_project])
             pil_info = self._get_pil_info(Server.pil_price_list_file)
-            pinning = nslcmop['operationParams'].get('vnf')
-            self.log.info("pinning: {}".format(pinning))
+            pinnings = nslcmop['operationParams'].get('vnf')
+            # remap member-vnf-index values according to id map
+            for pinning in pinnings:
+                pinning['member-vnf-index'] = member_vnf_index2mzn[pinning['member-vnf-index']]
+            self.log.info("pinnings: {}".format(pinnings))
             order_constraints = nslcmop['operationParams'].get('placement-constraints')
             self.log.info("order constraints: {}".format(order_constraints))
 
@@ -185,7 +211,7 @@ class Server:
                                           price_list,
                                           nsd,
                                           pil_info,
-                                          pinning, order_constraints).create_ns_placement_data()
+                                          pinnings, order_constraints).create_ns_placement_data()
 
             vnf_placement = MznPlacementConductor(self.log).do_placement_computation(nspd)
 
@@ -194,6 +220,9 @@ class Server:
             self.log.exception("PLA fault. Exception: {}".format(e))
             vnf_placement = []
         finally:
+            # remap names in vnf_placement
+            for e in vnf_placement:
+                e['member-vnf-index'] = mzn2member_vnf_index[e['member-vnf-index']]
             await self.msgBus.aiowrite("pla", "placement",
                                        {'placement': {'vnf': vnf_placement, 'nslcmopId': nslcmop_id}})
 

osm_pla/test/test_server.py

@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import asyncio
+import copy
 import os
 import sys
 from unittest import TestCase, mock
@@ -309,6 +310,18 @@ class TestServer(TestCase):
         _ = server._get_nsd(nslcmop_record_wo_pinning['operationParams']['nsdId'])
         server.db.get_one.assert_called_with("nsds", {'_id': nslcmop_record_wo_pinning['operationParams']['nsdId']})
 
+    def test__create_vnf_id_maps(self):
+        server = self.serverSetup()
+        server.db = Mock()
+        expected_mvi2mzn = {'one': 'VNF0', 'two': 'VNF1', 'three': 'VNF2'}
+        expected_mzn2mvi = {'VNF0': 'one', 'VNF1': 'two', 'VNF2': 'three'}
+
+        nsd_for_test = copy.deepcopy(nsd_from_db)
+        mvi2mzn, mzn2mvi = server._create_vnf_id_maps(nsd_for_test)
+
+        self.assertDictEqual(expected_mvi2mzn, mvi2mzn, 'Faulty mzn2member-vnf-index mapping')
+        self.assertDictEqual(expected_mzn2mvi, mzn2mvi, 'Faulty mzn2member-vnf-index mapping')
+
     def test__get_vim_accounts(self):  # OK
         server = self.serverSetup()
         server.db = Mock()
@@ -368,13 +381,14 @@ class TestServer(TestCase):
         run _get_placement and check that things get called as expected
         :return:
         """
-        placement_ret_val = [{'vimAccountId': 'bbbbbbbb-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'one'},
-                             {'vimAccountId': 'aaaaaaaa-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'two'},
-                             {'vimAccountId': 'aaaaaaaa-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'three'}]
+        placement_ret_val = [{'vimAccountId': 'bbbbbbbb-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'VNF0'},
+                             {'vimAccountId': 'aaaaaaaa-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'VNF1'},
+                             {'vimAccountId': 'aaaaaaaa-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'VNF2'}]
         server = self.serverSetup()
 
         server.msgBus.aiowrite = _async_mock()
-        mock__get_nsd.return_value = nsd_from_db
+        nsd_for_test = copy.deepcopy(nsd_from_db)
+        mock__get_nsd.return_value = nsd_for_test
         mock__get_vim_accounts.return_value = list_of_vims
 
         # FIXME need update to match nslcmop, not for test but for consistency
@@ -437,13 +451,14 @@ class TestServer(TestCase):
         run _get_placement and check that things get called as expected
         :return:
         """
-        placement_ret_val = [{'vimAccountId': 'bbbbbbbb-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'one'},
-                             {'vimAccountId': 'aaaaaaaa-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'two'},
-                             {'vimAccountId': 'aaaaaaaa-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'three'}]
+        placement_ret_val = [{'vimAccountId': 'bbbbbbbb-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'VNF0'},
+                             {'vimAccountId': 'aaaaaaaa-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'VNF1'},
+                             {'vimAccountId': 'aaaaaaaa-38f5-438d-b8ee-3f93b3531f87', 'member-vnf-index': 'VNF2'}]
         server = self.serverSetup()
 
         server.msgBus.aiowrite = _async_mock()
-        mock__get_nsd.return_value = nsd_from_db
+        nsd_for_test = copy.deepcopy(nsd_from_db)
+        mock__get_nsd.return_value = nsd_for_test
         mock__get_vim_accounts.return_value = list_of_vims
 
         # FIXME need update to match nslcmop, not for test but for consistency
@@ -506,7 +521,8 @@ class TestServer(TestCase):
         server = self.serverSetup()
 
         server.msgBus.aiowrite = _async_mock()
-        mock__get_nsd.return_value = nsd_from_db
+        nsd_for_test = copy.deepcopy(nsd_from_db)
+        mock__get_nsd.return_value = nsd_for_test
         mock__get_nsd.side_effect = RuntimeError('kaboom!')
         mock__get_vim_accounts.return_value = list_of_vims
         mock_do_placement_computation.return_value = \