diff options
Diffstat (limited to 'cloudinit/net/network_state.py')
| -rw-r--r-- | cloudinit/net/network_state.py | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/cloudinit/net/network_state.py b/cloudinit/net/network_state.py index 539b76d8..4d19f562 100644 --- a/cloudinit/net/network_state.py +++ b/cloudinit/net/network_state.py @@ -148,6 +148,7 @@ class NetworkState(object): self._network_state = copy.deepcopy(network_state) self._version = version self.use_ipv6 = network_state.get('use_ipv6', False) + self._has_default_route = None @property def config(self): @@ -157,14 +158,6 @@ class NetworkState(object): def version(self): return self._version - def iter_routes(self, filter_func=None): - for route in self._network_state.get('routes', []): - if filter_func is not None: - if filter_func(route): - yield route - else: - yield route - @property def dns_nameservers(self): try: @@ -179,6 +172,12 @@ class NetworkState(object): except KeyError: return [] + @property + def has_default_route(self): + if self._has_default_route is None: + self._has_default_route = self._maybe_has_default_route() + return self._has_default_route + def iter_interfaces(self, filter_func=None): ifaces = self._network_state.get('interfaces', {}) for iface in six.itervalues(ifaces): @@ -188,6 +187,32 @@ class NetworkState(object): if filter_func(iface): yield iface + def iter_routes(self, filter_func=None): + for route in self._network_state.get('routes', []): + if filter_func is not None: + if filter_func(route): + yield route + else: + yield route + + def _maybe_has_default_route(self): + for route in self.iter_routes(): + if self._is_default_route(route): + return True + for iface in self.iter_interfaces(): + for subnet in iface.get('subnets', []): + for route in subnet.get('routes', []): + if self._is_default_route(route): + return True + return False + + def _is_default_route(self, route): + default_nets = ('::', '0.0.0.0') + return ( + route.get('prefix') == 0 + and route.get('network') in default_nets + ) + @six.add_metaclass(CommandHandlerMeta) class NetworkStateInterpreter(object): |