NSX|TV: validate plugin is available

When admin creates plugin mapping validate that it is available.

Change-Id: If41dc891e8f9a484b85d00d9fff2f7fa3a6f376c

vmware_nsx/extensions/projectpluginmap.py

@@ -115,6 +115,10 @@ class ProjectPluginIllegalId(nexception.Conflict):
     message = _("Project ID %(project_id)s is illegal.")
 
 
+class ProjectPluginNotAvailable(nexception.NotAuthorized):
+    message = _("Plugin %(plugin)s is not available.")
+
+
 class ProjectPluginMapPluginBase(object):
 
     @abc.abstractmethod

vmware_nsx/plugins/nsx/plugin.py

@@ -756,6 +756,10 @@ class NsxTVDPlugin(agentschedulers_db.AZDhcpAgentSchedulerDbMixin,
             if not uuidutils.is_uuid_like(data['project']):
                 raise projectpluginmap.ProjectPluginIllegalId(
                     project_id=data['project'])
+            # 4. Check that plugin is available
+            if data['plugin'] not in self.plugins:
+                raise projectpluginmap.ProjectPluginNotAvailable(
+                    plugin=data['plugin'])
 
         # Add the entry to the DB and return it
         LOG.info("Adding mapping between project %(project)s and plugin "