A library for plugging and unplugging virtual interfaces in OpenStack.
Project description
A library for plugging and unplugging virtual interfaces in OpenStack.
Features
A base VIF plugin class that supplies a plug() and unplug() interface
Versioned objects that represent a virtual interface and its components
Usage
The interface to the os_vif library is very simple. To begin using the library, first call the os_vif.initialize() function. This will load all installed plugins and register the object model:
import os_vif os_vif.initialize()
Once the os_vif library is initialized, there are only two other library functions: os_vif.plug() and os_vif.unplug(). Both methods accept a single argument of type os_vif.objects.VIF:
import uuid from nova import objects as nova_objects from os_vif import exception as vif_exc from os_vif import objects as vif_objects from os_vif import vnic_types instance_uuid = 'd7a730ca-3c28-49c3-8f26-4662b909fe8a' instance = nova_objects.Instance.get_by_uuid(instance_uuid) instance_info = vif_objects.InstanceInfo( uuid=instance.uuid, name=instance.name, project_id=instance.project_id) subnet = vif_objects.Subnet(cidr='192.168.1.0/24') subnets = vif_objects.SubnetList([subnet]) network = vif_objects.Network(label='tenantnet', subnets=subnets, multi_host=False, should_provide_vlan=False, should_provide_bridge=False) vif_uuid = uuid.uuid4() vif = vif_objects.VIFVHostUser(id=vif_uuid, address=None, network=network, plugin='vhostuser', path='/path/to/socket', mode=vif_objects.fields.VIFVHostUserMode.SERVER) # Now do the actual plug operations to connect the VIF to # the backing network interface. try: os_vif.plug(vif) except vif_exc.PlugException as err: # Handle the failure... # If you are removing a virtual machine and its interfaces, # you would use the unplug() operation: try: os_vif.unplug(vif) except vif_exc.UnplugException as err: # Handle the failure...
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