91 lines
3.5 KiB
Python
91 lines
3.5 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from kuryr.lib import binding
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from kuryr.lib.binding.drivers import utils
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from kuryr_libnetwork.port_driver import driver
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class VethDriver(driver.Driver):
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"""Driver supporting veth on Bare Metal"""
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BINDING_DRIVERS = ('veth',)
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def get_supported_bindings(self):
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"""Returns a tuple of supported binding driver names for the driver.
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:returns: a tuple of strings
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"""
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return self.BINDING_DRIVERS
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def get_default_network_id(self):
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"""Returns a Neutron network ID as per driver logic, if any.
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This driver does not make use of any specific network and will thus
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return None.
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:returns: None
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"""
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return None
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def create_host_iface(self, endpoint_id, neutron_port, subnets,
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network=None):
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"""Instantiates a host interface and bind it to the host.
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The interface type will be veth and bound to a virtual bridge.
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:param endpoint_id: the ID of the endpoint as string
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:param neutron_port: the container Neutron port dictionary as returned
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by python-neutronclient
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:param subnets: an iterable of all the Neutron subnets which the
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endpoint is trying to join
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:param network: the Neutron network which the endpoint is trying
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to join
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:returns: the tuple of stdout and stderr returned by
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processutils.execute invoked with the executable script for
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unbinding
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:raises: kuryr.lib.exceptions.VethCreationFailure,
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kuryr.lib.exceptions.BindingNotSupportedFailure
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processutils.ProcessExecutionError
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"""
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_, _, (stdout, stderr) = binding.port_bind(
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endpoint_id, neutron_port, subnets, network)
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return (stdout, stderr)
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def delete_host_iface(self, endpoint_id, neutron_port):
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"""Deletes a host interface after unbinding it from the host.
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The host veth interface associated to the Neutron port will be unbound
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from its vitual bridge and deleted by delegating to the selected
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kuryr-lib driver.
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:param endpoint_id: the ID of the endpoint as string
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:param neutron_port: a port dictionary returned from
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python-neutronclient
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:returns: the tuple of stdout and stderr returned by
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processutils.execute invoked with the executable script for
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unbinding
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:raises: kuryr.lib.exceptions.VethDeletionFailure,
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processutils.ProcessExecutionError
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"""
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return binding.port_unbind(endpoint_id, neutron_port)
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def get_container_iface_name(self, neutron_port):
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"""Returns interface name of a container in the default namespace.
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:param neutron_port_id: The neutron port
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:returns: interface name as string
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"""
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_, container_iface_name = utils.get_veth_pair_names(neutron_port['id'])
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return container_iface_name
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