/**
* Returns hosts associated with a given OpenStack network.
*
* @param vNet openstack network
* @return set of hosts
*/
private Set<Host> getHostsWithOpenstackNetwork(OpenstackNetwork vNet) {
checkNotNull(vNet);
Set<Host> hosts =
openstackService
.ports(vNet.id())
.stream()
.filter(port -> port.deviceOwner().contains("compute"))
.map(
port ->
hostService.getHostsByMac(port.macAddress()).stream().findFirst().orElse(null))
.collect(Collectors.toSet());
hosts.remove(null);
return hosts;
}
