244 lines
9.4 KiB
Python
244 lines
9.4 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Copyright 2012 Cisco Systems, Inc. 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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#
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# @author: Sumit Naiksatam, Cisco Systems, Inc.
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# @author: Edgar Magana, Cisco Systems, Inc.
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# @author: Arvind Somya, Cisco Systems, Inc. (asomya@cisco.com)
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#
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"""
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PlugIn for Nexus OS driver
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"""
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import logging
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from quantum.common import exceptions as exc
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from quantum.openstack.common import importutils
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from quantum.plugins.cisco.common import cisco_constants as const
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from quantum.plugins.cisco.common import cisco_credentials_v2 as cred
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from quantum.plugins.cisco.common import cisco_exceptions as excep
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from quantum.plugins.cisco.db import network_db_v2 as cdb
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from quantum.plugins.cisco.db import nexus_db_v2 as nxos_db
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from quantum.plugins.cisco.l2device_plugin_base import L2DevicePluginBase
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from quantum.plugins.cisco.nexus import cisco_nexus_configuration as conf
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LOG = logging.getLogger(__name__)
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class NexusPlugin(L2DevicePluginBase):
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"""
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Nexus PLugIn Main Class
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"""
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_networks = {}
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def __init__(self):
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"""
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Extracts the configuration parameters from the configuration file
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"""
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self._client = importutils.import_object(conf.NEXUS_DRIVER)
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LOG.debug(_("Loaded driver %s"), conf.NEXUS_DRIVER)
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self._nexus_switches = conf.NEXUS_DETAILS
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self.credentials = {}
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def get_credential(self, nexus_ip):
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if not nexus_ip in self.credentials.keys():
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_nexus_username = cred.Store.get_username(nexus_ip)
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_nexus_password = cred.Store.get_password(nexus_ip)
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self.credentials[nexus_ip] = {
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'username': _nexus_username,
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'password': _nexus_password
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}
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return self.credentials[nexus_ip]
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def get_all_networks(self, tenant_id):
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"""
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Returns a dictionary containing all
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<network_uuid, network_name> for
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the specified tenant.
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"""
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LOG.debug(_("NexusPlugin:get_all_networks() called"))
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return self._networks.values()
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def create_network(self, tenant_id, net_name, net_id, vlan_name, vlan_id,
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host, instance):
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"""
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Create a VLAN in the appropriate switch/port,
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and configure the appropriate interfaces
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for this VLAN
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"""
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LOG.debug(_("NexusPlugin:create_network() called"))
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# Grab the switch IP and port for this host
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switch_ip = ''
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port_id = ''
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for switch in self._nexus_switches.keys():
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for hostname in self._nexus_switches[switch].keys():
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if str(hostname) == str(host):
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switch_ip = switch
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port_id = self._nexus_switches[switch][hostname]['ports']
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# Check if this network is already in the DB
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binding = nxos_db.get_port_vlan_switch_binding(
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port_id, vlan_id, switch_ip)
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if not binding:
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_nexus_ip = switch_ip
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_nexus_ports = (port_id,)
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_nexus_ssh_port = \
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self._nexus_switches[switch_ip]['ssh_port']['ssh_port']
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_nexus_creds = self.get_credential(_nexus_ip)
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_nexus_username = _nexus_creds['username']
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_nexus_password = _nexus_creds['password']
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# Check for vlan/switch binding
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vbinding = nxos_db.get_nexusvlan_binding(vlan_id, switch_ip)
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if not vbinding:
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# Create vlan and trunk vlan on the port
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self._client.create_vlan(
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vlan_name, str(vlan_id), _nexus_ip,
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_nexus_username, _nexus_password,
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_nexus_ports, _nexus_ssh_port, vlan_id)
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else:
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# Only trunk vlan on the port
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man = self._client.nxos_connect(_nexus_ip,
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int(_nexus_ssh_port),
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_nexus_username,
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_nexus_password)
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self._client.enable_vlan_on_trunk_int(man,
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port_id,
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vlan_id)
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nxos_db.add_nexusport_binding(port_id, str(vlan_id),
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switch_ip, instance)
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new_net_dict = {const.NET_ID: net_id,
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const.NET_NAME: net_name,
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const.NET_PORTS: {},
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const.NET_VLAN_NAME: vlan_name,
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const.NET_VLAN_ID: vlan_id}
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self._networks[net_id] = new_net_dict
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return new_net_dict
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def delete_network(self, tenant_id, net_id, **kwargs):
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"""
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Deletes the VLAN in all switches, and removes the VLAN configuration
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from the relevant interfaces
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"""
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LOG.debug(_("NexusPlugin:delete_network() called"))
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def get_network_details(self, tenant_id, net_id, **kwargs):
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"""
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Returns the details of a particular network
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"""
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LOG.debug(_("NexusPlugin:get_network_details() called"))
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network = self._get_network(tenant_id, net_id)
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return network
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def update_network(self, tenant_id, net_id, **kwargs):
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"""
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Updates the properties of a particular
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Virtual Network.
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"""
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LOG.debug(_("NexusPlugin:update_network() called"))
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def get_all_ports(self, tenant_id, net_id, **kwargs):
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"""
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This is probably not applicable to the Nexus plugin.
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Delete if not required.
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"""
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LOG.debug(_("NexusPlugin:get_all_ports() called"))
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def create_port(self, tenant_id, net_id, port_state, port_id, **kwargs):
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"""
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This is probably not applicable to the Nexus plugin.
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Delete if not required.
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"""
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LOG.debug(_("NexusPlugin:create_port() called"))
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def delete_port(self, device_id, vlan_id):
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"""
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Delete port bindings from the database and scan
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whether the network is still required on
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the interfaces trunked
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"""
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LOG.debug(_("NexusPlugin:delete_port() called"))
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# Delete DB row for this port
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row = nxos_db.get_nexusvm_binding(vlan_id, device_id)
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if row:
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nxos_db.remove_nexusport_binding(row['port_id'], row['vlan_id'],
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row['switch_ip'],
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row['instance_id'])
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# Check for any other bindings with the same vlan_id and switch_ip
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bindings = nxos_db.get_nexusvlan_binding(
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row['vlan_id'], row['switch_ip'])
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if not bindings:
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# Delete this vlan from this switch
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_nexus_ip = row['switch_ip']
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_nexus_ports = (row['port_id'],)
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_nexus_ssh_port = \
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self._nexus_switches[_nexus_ip]['ssh_port']['ssh_port']
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_nexus_creds = self.get_credential(_nexus_ip)
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_nexus_username = _nexus_creds['username']
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_nexus_password = _nexus_creds['password']
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self._client.delete_vlan(
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str(row['vlan_id']), _nexus_ip,
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_nexus_username, _nexus_password,
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_nexus_ports, _nexus_ssh_port)
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return row['instance_id']
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def update_port(self, tenant_id, net_id, port_id, port_state, **kwargs):
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"""
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This is probably not applicable to the Nexus plugin.
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Delete if not required.
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"""
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LOG.debug(_("NexusPlugin:update_port() called"))
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def get_port_details(self, tenant_id, net_id, port_id, **kwargs):
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"""
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This is probably not applicable to the Nexus plugin.
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Delete if not required.
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"""
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LOG.debug(_("NexusPlugin:get_port_details() called"))
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def plug_interface(self, tenant_id, net_id, port_id, remote_interface_id,
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**kwargs):
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"""
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This is probably not applicable to the Nexus plugin.
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Delete if not required.
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"""
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LOG.debug(_("NexusPlugin:plug_interface() called"))
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def unplug_interface(self, tenant_id, net_id, port_id, **kwargs):
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"""
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This is probably not applicable to the Nexus plugin.
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Delete if not required.
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"""
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LOG.debug(_("NexusPlugin:unplug_interface() called"))
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def _get_vlan_id_for_network(self, tenant_id, network_id, context,
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base_plugin_ref):
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"""
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Obtain the VLAN ID given the Network ID
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"""
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vlan = cdb.get_vlan_binding(network_id)
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return vlan.vlan_id
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def _get_network(self, tenant_id, network_id, context, base_plugin_ref):
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"""
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Gets the NETWORK ID
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"""
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network = base_plugin_ref._get_network(context, network_id)
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if not network:
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raise exc.NetworkNotFound(net_id=network_id)
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return {const.NET_ID: network_id, const.NET_NAME: network.name,
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const.NET_PORTS: network.ports}
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