320 lines
12 KiB
Python
320 lines
12 KiB
Python
# Copyright 2012 Cisco Systems, Inc.
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# All rights reserved.
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#
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# 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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import inspect
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from neutron.api.v2 import attributes
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from neutron.extensions import portbindings
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from neutron.extensions import providernet as provider
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from neutron import neutron_plugin_base_v2
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from neutron.openstack.common import excutils
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from neutron.openstack.common.gettextutils import _LE
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from neutron.openstack.common import importutils
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from neutron.openstack.common import log as logging
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from neutron.plugins.cisco.common import cisco_constants as const
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from neutron.plugins.cisco.common import cisco_credentials_v2 as cred
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from neutron.plugins.cisco.common import config as conf
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from neutron.plugins.cisco.db import network_db_v2 as cdb
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LOG = logging.getLogger(__name__)
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class VirtualPhysicalSwitchModelV2(neutron_plugin_base_v2.NeutronPluginBaseV2):
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"""Virtual Physical Switch Model.
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This implementation works with n1kv sub-plugin for the
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following topology:
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One or more servers to a n1kv switch.
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"""
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__native_bulk_support = True
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supported_extension_aliases = ["provider", "binding"]
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_methods_to_delegate = ['create_network_bulk',
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'get_network', 'get_networks',
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'create_port_bulk',
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'get_port', 'get_ports',
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'create_subnet', 'create_subnet_bulk',
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'delete_subnet', 'update_subnet',
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'get_subnet', 'get_subnets',
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'create_or_update_agent', 'report_state']
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def __init__(self):
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"""Initialize the segmentation manager.
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Checks which device plugins are configured, and load the inventories
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those device plugins for which the inventory is configured.
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"""
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conf.CiscoConfigOptions()
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self._plugins = {}
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self._plugins['vswitch_plugin'] = importutils.import_object(
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'neutron.plugins.cisco.n1kv.n1kv_neutron_plugin.'
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'N1kvNeutronPluginV2')
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if ((const.VSWITCH_PLUGIN in self._plugins) and
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hasattr(self._plugins[const.VSWITCH_PLUGIN],
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"supported_extension_aliases")):
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self.supported_extension_aliases.extend(
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self._plugins[const.VSWITCH_PLUGIN].
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supported_extension_aliases)
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# Initialize credential store after database initialization
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cred.Store.initialize()
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LOG.debug(_("%(module)s.%(name)s init done"),
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{'module': __name__,
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'name': self.__class__.__name__})
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def __getattribute__(self, name):
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"""Delegate calls to sub-plugin.
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This delegates the calls to the methods implemented by the
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sub-plugin. Note: Currently, bulking is handled by the caller
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(PluginV2), and this model class expects to receive only non-bulking
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calls. If, however, a bulking call is made, this will method will
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delegate the call to the sub-plugin.
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"""
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super_getattribute = super(VirtualPhysicalSwitchModelV2,
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self).__getattribute__
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methods = super_getattribute('_methods_to_delegate')
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if name in methods:
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plugin = super_getattribute('_plugins')[const.VSWITCH_PLUGIN]
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return getattr(plugin, name)
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try:
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return super_getattribute(name)
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except AttributeError:
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plugin = super_getattribute('_plugins')[const.VSWITCH_PLUGIN]
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return getattr(plugin, name)
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def _func_name(self, offset=0):
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"""Get the name of the calling function."""
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frame_record = inspect.stack()[1 + offset]
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func_name = frame_record[3]
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return func_name
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def _invoke_plugin_per_device(self, plugin_key, function_name,
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args, **kwargs):
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"""Invoke plugin per device.
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Invokes a device plugin's relevant functions (based on the
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plugin implementation) for completing this operation.
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"""
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if plugin_key not in self._plugins:
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LOG.info(_("No %s Plugin loaded"), plugin_key)
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LOG.info(_("%(plugin_key)s: %(function_name)s with args %(args)s "
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"ignored"),
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{'plugin_key': plugin_key,
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'function_name': function_name,
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'args': args})
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else:
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func = getattr(self._plugins[plugin_key], function_name)
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return func(*args, **kwargs)
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def _get_provider_vlan_id(self, network):
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if (all(attributes.is_attr_set(network.get(attr))
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for attr in (provider.NETWORK_TYPE,
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provider.PHYSICAL_NETWORK,
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provider.SEGMENTATION_ID))
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and
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network[provider.NETWORK_TYPE] == const.NETWORK_TYPE_VLAN):
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return network[provider.SEGMENTATION_ID]
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def create_network(self, context, network):
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"""Create network.
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Perform this operation in the context of the configured device
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plugins.
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"""
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LOG.debug(_("create_network() called"))
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provider_vlan_id = self._get_provider_vlan_id(network[const.NETWORK])
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args = [context, network]
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switch_output = self._invoke_plugin_per_device(const.VSWITCH_PLUGIN,
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self._func_name(),
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args)
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# The vswitch plugin did all the verification. If it's a provider
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# vlan network, save it for the sub-plugin to use later.
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if provider_vlan_id:
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network_id = switch_output[const.NET_ID]
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cdb.add_provider_network(network_id,
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const.NETWORK_TYPE_VLAN,
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provider_vlan_id)
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LOG.debug(_("Provider network added to DB: %(network_id)s, "
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"%(vlan_id)s"),
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{'network_id': network_id, 'vlan_id': provider_vlan_id})
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return switch_output
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def update_network(self, context, id, network):
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"""Update network.
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Perform this operation in the context of the configured device
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plugins.
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"""
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LOG.debug(_("update_network() called"))
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# We can only support updating of provider attributes if all the
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# configured sub-plugins support it. Currently we have no method
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# in place for checking whether a sub-plugin supports it,
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# so assume not.
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provider._raise_if_updates_provider_attributes(network['network'])
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args = [context, id, network]
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return self._invoke_plugin_per_device(const.VSWITCH_PLUGIN,
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self._func_name(),
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args)
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def delete_network(self, context, id):
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"""Delete network.
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Perform this operation in the context of the configured device
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plugins.
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"""
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args = [context, id]
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switch_output = self._invoke_plugin_per_device(const.VSWITCH_PLUGIN,
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self._func_name(),
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args)
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if cdb.remove_provider_network(id):
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LOG.debug(_("Provider network removed from DB: %s"), id)
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return switch_output
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def get_network(self, context, id, fields=None):
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"""Get network. This method is delegated to the vswitch plugin.
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This method is included here to satisfy abstract method requirements.
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"""
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pass # pragma no cover
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def get_networks(self, context, filters=None, fields=None,
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sorts=None, limit=None, marker=None, page_reverse=False):
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"""Get networks. This method is delegated to the vswitch plugin.
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This method is included here to satisfy abstract method requirements.
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"""
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pass # pragma no cover
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def _check_valid_port_device_owner(self, port):
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"""Check the port for valid device_owner.
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Don't call the sub-plugin for router and dhcp
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port owners.
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"""
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return port['device_owner'].startswith('compute')
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def _get_port_host_id_from_bindings(self, port):
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"""Get host_id from portbindings."""
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host_id = None
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if (portbindings.HOST_ID in port and
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attributes.is_attr_set(port[portbindings.HOST_ID])):
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host_id = port[portbindings.HOST_ID]
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return host_id
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def create_port(self, context, port):
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"""Create port.
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Perform this operation in the context of the configured device
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plugins.
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"""
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LOG.debug(_("create_port() called"))
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args = [context, port]
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return self._invoke_plugin_per_device(const.VSWITCH_PLUGIN,
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self._func_name(),
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args)
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def get_port(self, context, id, fields=None):
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"""Get port. This method is delegated to the vswitch plugin.
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This method is included here to satisfy abstract method requirements.
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"""
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pass # pragma no cover
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def get_ports(self, context, filters=None, fields=None):
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"""Get ports. This method is delegated to the vswitch plugin.
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This method is included here to satisfy abstract method requirements.
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"""
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pass # pragma no cover
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def update_port(self, context, id, port):
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"""Update port.
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Perform this operation in the context of the configured device
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plugins.
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"""
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LOG.debug(_("update_port() called"))
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args = [context, id, port]
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return self._invoke_plugin_per_device(const.VSWITCH_PLUGIN,
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self._func_name(),
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args)
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def delete_port(self, context, id, l3_port_check=True):
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"""Delete port.
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Perform this operation in the context of the configured device
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plugins.
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"""
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LOG.debug(_("delete_port() called"))
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port = self.get_port(context, id)
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try:
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args = [context, id]
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switch_output = self._invoke_plugin_per_device(
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const.VSWITCH_PLUGIN, self._func_name(),
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args, l3_port_check=l3_port_check)
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except Exception as e:
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with excutils.save_and_reraise_exception():
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LOG.error(_LE("Unable to delete port '%(pname)s' on switch. "
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"Exception: %(exp)s"), {'pname': port['name'],
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'exp': e})
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return switch_output
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def create_subnet(self, context, subnet):
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"""Create subnet. This method is delegated to the vswitch plugin.
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This method is included here to satisfy abstract method requirements.
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"""
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pass # pragma no cover
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def update_subnet(self, context, id, subnet):
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"""Update subnet. This method is delegated to the vswitch plugin.
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This method is included here to satisfy abstract method requirements.
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"""
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pass # pragma no cover
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def get_subnet(self, context, id, fields=None):
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"""Get subnet. This method is delegated to the vswitch plugin.
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This method is included here to satisfy abstract method requirements.
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"""
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pass # pragma no cover
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def delete_subnet(self, context, id, kwargs):
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"""Delete subnet. This method is delegated to the vswitch plugin.
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This method is included here to satisfy abstract method requirements.
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"""
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pass # pragma no cover
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def get_subnets(self, context, filters=None, fields=None,
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sorts=None, limit=None, marker=None, page_reverse=False):
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"""Get subnets. This method is delegated to the vswitch plugin.
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This method is included here to satisfy abstract method requirements.
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"""
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pass # pragma no cover
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