commit 8dd8779b6c1f27f71c302246b5b4ac3d089f4245
Author: Kobi Samoray <ksamoray@vmware.com>
Date:   Mon Oct 12 17:43:02 2020 +0300

    Address various issues with Octavia delete cascade
    
    Cascaded loadbalancer deletion with Octavia was broken in various ways.
    Some NSXV specific while others are within the common code.
    
    Change-Id: Id5148b6d496645c49fccb50e33d6a371e98bbb85

diff --git a/vmware_nsx/services/lbaas/nsx_v/implementation/member_mgr.py b/vmware_nsx/services/lbaas/nsx_v/implementation/member_mgr.py
index e2fbead..a99db4f 100644
--- a/vmware_nsx/services/lbaas/nsx_v/implementation/member_mgr.py
+++ b/vmware_nsx/services/lbaas/nsx_v/implementation/member_mgr.py
@@ -38,11 +38,13 @@ class EdgeMemberManagerFromDict(base_mgr.EdgeLoadbalancerBaseManager):
     def _get_pool_lb_id(self, member):
         if not member.get('pool'):
             return
-        listener = member['pool']['listener']
+        listener = member['pool'].get('listener')
         if listener:
             lb_id = listener['loadbalancer_id']
+        elif member['pool'].get('loadbalancer_id'):
+            lb_id = member['pool']['loadbalancer_id']
         else:
-            lb_id = member['pool']['loadbalancer']['id']
+            lb_id = member['pool'].get('loadbalancer', []).get('id')
         return lb_id
 
     def _get_pool_member_ips(self, pool, operation, address):
diff --git a/vmware_nsx/services/lbaas/nsx_v/implementation/pool_mgr.py b/vmware_nsx/services/lbaas/nsx_v/implementation/pool_mgr.py
index 1643938..7988594 100644
--- a/vmware_nsx/services/lbaas/nsx_v/implementation/pool_mgr.py
+++ b/vmware_nsx/services/lbaas/nsx_v/implementation/pool_mgr.py
@@ -174,15 +174,16 @@ class EdgePoolManagerFromDict(base_mgr.EdgeLoadbalancerBaseManager):
 
                     listener_binding = nsxv_db.get_nsxv_lbaas_listener_binding(
                         context.session, lb_id, listener['id'])
-                    vse = listener_mgr.listener_to_edge_vse(
-                        context,
-                        listener,
-                        lb_binding['vip_address'],
-                        None,
-                        listener_binding['app_profile_id'])
-                    with locking.LockManager.get_lock(edge_id):
-                        self.vcns.update_vip(
-                            edge_id, listener_binding['vse_id'], vse)
+                    if listener_binding:
+                        vse = listener_mgr.listener_to_edge_vse(
+                            context,
+                            listener,
+                            lb_binding['vip_address'],
+                            None,
+                            listener_binding['app_profile_id'])
+                        with locking.LockManager.get_lock(edge_id):
+                            self.vcns.update_vip(
+                                edge_id, listener_binding['vse_id'], vse)
             self.vcns.delete_pool(edge_id, edge_pool_id)
             completor(success=True)
             nsxv_db.del_nsxv_lbaas_pool_binding(
diff --git a/vmware_nsx/services/lbaas/octavia/octavia_listener.py b/vmware_nsx/services/lbaas/octavia/octavia_listener.py
index be9494e..b58ef68 100644
--- a/vmware_nsx/services/lbaas/octavia/octavia_listener.py
+++ b/vmware_nsx/services/lbaas/octavia/octavia_listener.py
@@ -324,26 +324,43 @@ class NSXOctaviaListenerEndpoint(object):
         def dummy_completor(success=True):
             pass
 
+        completor = self.get_completor_func(constants.LOADBALANCERS,
+                                            loadbalancer, delete=True)
+
+        listener_dict = {}
         # Go over the LB tree and delete one by one using the cascade
         # api implemented for each resource
-        for listener in loadbalancer.get('listeners', []):
-            for policy in listener.get('l7policies', []):
-                for rule in policy.get('rules', []):
-                    self.l7rule.delete_cascade(ctx, rule, dummy_completor)
-                self.l7policy.delete_cascade(ctx, policy, dummy_completor)
-            self.listener.delete_cascade(ctx, listener, dummy_completor)
-        for pool in loadbalancer.get('pools', []):
-            for member in pool.get('members', []):
-                self.member.delete_cascade(ctx, member, dummy_completor)
-            if pool.get('healthmonitor'):
-                self.healthmonitor.delete_cascade(
-                    ctx, pool['healthmonitor'], dummy_completor)
-            self.pool.delete_cascade(ctx, pool, dummy_completor)
+        try:
+            for listener in loadbalancer.get('listeners', []):
+                listener['loadbalancer'] = loadbalancer
+                listener_dict[listener['id']] = listener
+                for policy in listener.get('l7policies', []):
+                    for rule in policy.get('rules', []):
+                        self.l7rule.delete_cascade(ctx, rule, dummy_completor)
+                    self.l7policy.delete_cascade(ctx, policy, dummy_completor)
+                self.listener.delete_cascade(ctx, listener, dummy_completor)
+            for pool in loadbalancer.get('pools', []):
+                if not pool.get('loadbalancer'):
+                    pool['loadbalancer'] = loadbalancer
+                if pool.get('listener_id'):
+                    pool['listener'] = listener_dict[pool['listener_id']]
+                    pool['listeners'] = [pool['listener']]
+                for member in pool.get('members', []):
+                    if not member.get('pool'):
+                        member['pool'] = pool
+                    self.member.delete_cascade(ctx, member, dummy_completor)
+                if pool.get('healthmonitor'):
+                    self.healthmonitor.delete_cascade(
+                        ctx, pool['healthmonitor'], dummy_completor)
+                self.pool.delete_cascade(ctx, pool, dummy_completor)
+        except Exception as e:
+            LOG.error('NSX driver loadbalancer_delete_cascade failed to '
+                      'delete sub-object %s', e)
+            completor(success=False)
+            return False
 
         # Delete the loadbalancer itself with the completor that marks all
         # as deleted
-        completor = self.get_completor_func(constants.LOADBALANCERS,
-                                            loadbalancer, delete=True)
         try:
             self.loadbalancer.delete_cascade(
                 ctx, loadbalancer, self.get_completor_func(