def destroy(self):
# check no VIFs or PIFs attached
if len(self.get_VIFs()) > 0:
raise NetworkError("Cannot destroy network with VIFs attached",
self.get_name_label())
if len(self.get_PIFs()) > 0:
raise NetworkError("Cannot destroy network with PIFs attached",
self.get_name_label())
XendBase.destroy(self)
Ovsctl.bridge_del(self.get_name_label())
XendNode.instance().save_networks()
def recreate(self, record, uuid):
"""
Called on xend start / restart, or machine
restart, when read from saved config.
Needs to check network exists, create it otherwise
"""
# Create instance (do this first, to check record)
network = XendNetwork(record, uuid)
# Create network if it doesn't already exist
if not bridge_exists(network.name_label):
if network.managed:
Ovsctl.bridge_create(network.name_label)
else:
log.info("Not recreating missing unmanaged network %s" % network.name_label)
return uuid
def create(self, record):
"""
Called from API, to create a new network
"""
# Create new uuids
uuid = genuuid.gen_regularUuid()
# Create instance (do this first, to check record)
network = XendNetwork(record, uuid)
# Check network doesn't already exist
name_label = network.name_label
if bridge_exists(name_label):
del network
raise UniqueNameError(name_label, "network")
# Create the bridge
Ovsctl.bridge_create(network.name_label)
XendNode.instance().save_networks()
return uuid
def bridge_exists(name):
return name in Ovsctl.get_state().keys()
