+ /**
+ * @param novaResource Single openstack resource that is of type Nova
+ * @param neutronPorts List of Neutron ports created within the stack
+ * @return Filtered list of neutron ports taht relate to the nova server in openstack
+ */
+ protected Stream<Port> filterNeutronPorts(Resource novaResource, List<Optional<Port>> neutronPorts) {
+ List<Port> filteredNeutronPorts = neutronPorts.stream().filter(Optional::isPresent).map(Optional::get)
+ .collect(Collectors.toList());
+ return filteredNeutronPorts.stream()
+ .filter(port -> port.getDeviceId().equalsIgnoreCase(novaResource.getPhysicalResourceId()));
+ }
+
+ /**
+ * @param resources Resource stream created by the stack in openstack
+ * @param cloudSiteId Unique site id to identify which openstack we talk to
+ * @param tenantId The tenant within the cloud we are talking to where resouces exist
+ * @return List of optional neutron ports found within the cloud site and tenant
+ */
+ protected List<Optional<Port>> retrieveNeutronPortDetails(Resources resources,String cloudSiteId,String tenantId){
+ return resources.getList().parallelStream()
+ .filter(resource -> "OS::Neutron::Port".equals(resource.getType()))
+ .map(resource -> neutron.getNeutronPort(resource.getPhysicalResourceId(),tenantId,cloudSiteId)).collect(Collectors.toList());
+
+ }
+