# vim: tabstop=4 shiftwidth=4 softtabstop=4 # Copyright 2011 Nicira Networks, Inc. # All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. # @author: Somik Behera, Nicira Networks, Inc. # @author: Brad Hall, Nicira Networks, Inc. # @author: Dan Wendlandt, Nicira Networks, Inc. # @author: Dave Lapsley, Nicira Networks, Inc. # @author: Aaron Rosen, Nicira Networks, Inc. import logging import os from quantum.api.api_common import OperationalStatus from quantum.common import exceptions as q_exc from quantum.common.utils import find_config_file from quantum.db import api as db from quantum.db import db_base_plugin_v2 from quantum.db import models_v2 from quantum.plugins.openvswitch.common import config from quantum.plugins.openvswitch import ovs_db from quantum.plugins.openvswitch import ovs_db_v2 from quantum.quantum_plugin_base import QuantumPluginBase LOG = logging.getLogger("ovs_quantum_plugin") CONF_FILE = find_config_file({"plugin": "openvswitch"}, "ovs_quantum_plugin.ini") # Exception thrown if no more VLANs are available class NoFreeVLANException(Exception): pass class VlanMap(object): vlans = {} net_ids = {} free_vlans = set() def __init__(self, vlan_min=1, vlan_max=4094): if vlan_min > vlan_max: LOG.warn("Using default VLAN values! vlan_min = %s is larger" " than vlan_max = %s!" % (vlan_min, vlan_max)) vlan_min = 1 vlan_max = 4094 self.vlan_min = vlan_min self.vlan_max = vlan_max self.vlans.clear() self.net_ids.clear() self.free_vlans = set(xrange(self.vlan_min, self.vlan_max + 1)) def already_used(self, vlan_id, network_id): self.free_vlans.remove(vlan_id) self.set_vlan(vlan_id, network_id) def set_vlan(self, vlan_id, network_id): self.vlans[vlan_id] = network_id self.net_ids[network_id] = vlan_id def acquire(self, network_id): if len(self.free_vlans): vlan = self.free_vlans.pop() self.set_vlan(vlan, network_id) LOG.debug("Allocated VLAN %s for network %s" % (vlan, network_id)) return vlan else: raise NoFreeVLANException("No VLAN free for network %s" % network_id) def release(self, network_id): vlan = self.net_ids.get(network_id, None) if vlan is not None: self.free_vlans.add(vlan) del self.vlans[vlan] del self.net_ids[network_id] LOG.debug("Deallocated VLAN %s (used by network %s)" % (vlan, network_id)) else: LOG.error("No vlan found with network \"%s\"", network_id) def populate_already_used(self, vlans): for vlan_id, network_id in vlans: LOG.debug("Adding already populated vlan %s -> %s" % (vlan_id, network_id)) self.already_used(vlan_id, network_id) class OVSQuantumPlugin(QuantumPluginBase): def __init__(self, configfile=None): conf = config.parse(CONF_FILE) options = {"sql_connection": conf.DATABASE.sql_connection} sql_max_retries = conf.DATABASE.sql_max_retries options.update({"sql_max_retries": sql_max_retries}) reconnect_interval = conf.DATABASE.reconnect_interval options.update({"reconnect_interval": reconnect_interval}) db.configure_db(options) self.vmap = VlanMap(conf.OVS.vlan_min, conf.OVS.vlan_max) # Populate the map with anything that is already present in the # database self.vmap.populate_already_used(ovs_db.get_vlans()) def get_all_networks(self, tenant_id, **kwargs): nets = [] for x in db.network_list(tenant_id): LOG.debug("Adding network: %s" % x.uuid) nets.append(self._make_net_dict(str(x.uuid), x.name, None, x.op_status)) return nets def _make_net_dict(self, net_id, net_name, ports, op_status): res = { 'net-id': net_id, 'net-name': net_name, 'net-op-status': op_status, } if ports: res['net-ports'] = ports return res def create_network(self, tenant_id, net_name, **kwargs): net = db.network_create(tenant_id, net_name, op_status=OperationalStatus.UP) try: vlan_id = self.vmap.acquire(str(net.uuid)) except NoFreeVLANException: db.network_destroy(net.uuid) raise LOG.debug("Created network: %s" % net) ovs_db.add_vlan_binding(vlan_id, str(net.uuid)) return self._make_net_dict(str(net.uuid), net.name, [], net.op_status) def delete_network(self, tenant_id, net_id): db.validate_network_ownership(tenant_id, net_id) net = db.network_get(net_id) # Verify that no attachments are plugged into the network for port in db.port_list(net_id): if port.interface_id: raise q_exc.NetworkInUse(net_id=net_id) net = db.network_destroy(net_id) ovs_db.remove_vlan_binding(net_id) self.vmap.release(net_id) return self._make_net_dict(str(net.uuid), net.name, [], net.op_status) def get_network_details(self, tenant_id, net_id): db.validate_network_ownership(tenant_id, net_id) net = db.network_get(net_id) ports = self.get_all_ports(tenant_id, net_id) return self._make_net_dict(str(net.uuid), net.name, ports, net.op_status) def update_network(self, tenant_id, net_id, **kwargs): db.validate_network_ownership(tenant_id, net_id) net = db.network_update(net_id, tenant_id, **kwargs) return self._make_net_dict(str(net.uuid), net.name, None, net.op_status) def _make_port_dict(self, port): if port.state == "ACTIVE": op_status = port.op_status else: op_status = OperationalStatus.DOWN return { 'port-id': str(port.uuid), 'port-state': port.state, 'port-op-status': op_status, 'net-id': port.network_id, 'attachment': port.interface_id, } def get_all_ports(self, tenant_id, net_id, **kwargs): ids = [] db.validate_network_ownership(tenant_id, net_id) ports = db.port_list(net_id) # This plugin does not perform filtering at the moment return [{'port-id': str(p.uuid)} for p in ports] def create_port(self, tenant_id, net_id, port_state=None, **kwargs): LOG.debug("Creating port with network_id: %s" % net_id) db.validate_network_ownership(tenant_id, net_id) port = db.port_create(net_id, port_state, op_status=OperationalStatus.DOWN) return self._make_port_dict(port) def delete_port(self, tenant_id, net_id, port_id): db.validate_port_ownership(tenant_id, net_id, port_id) port = db.port_destroy(port_id, net_id) return self._make_port_dict(port) def update_port(self, tenant_id, net_id, port_id, **kwargs): """ Updates the state of a port on the specified Virtual Network. """ db.validate_port_ownership(tenant_id, net_id, port_id) port = db.port_get(port_id, net_id) db.port_update(port_id, net_id, **kwargs) return self._make_port_dict(port) def get_port_details(self, tenant_id, net_id, port_id): db.validate_port_ownership(tenant_id, net_id, port_id) port = db.port_get(port_id, net_id) return self._make_port_dict(port) def plug_interface(self, tenant_id, net_id, port_id, remote_iface_id): db.validate_port_ownership(tenant_id, net_id, port_id) db.port_set_attachment(port_id, net_id, remote_iface_id) def unplug_interface(self, tenant_id, net_id, port_id): db.validate_port_ownership(tenant_id, net_id, port_id) db.port_set_attachment(port_id, net_id, "") db.port_update(port_id, net_id, op_status=OperationalStatus.DOWN) def get_interface_details(self, tenant_id, net_id, port_id): db.validate_port_ownership(tenant_id, net_id, port_id) res = db.port_get(port_id, net_id) return res.interface_id class OVSQuantumPluginV2(db_base_plugin_v2.QuantumDbPluginV2): def __init__(self, configfile=None): conf = config.parse(CONF_FILE) options = {"sql_connection": conf.DATABASE.sql_connection} options.update({'base': models_v2.model_base.BASEV2}) sql_max_retries = conf.DATABASE.sql_max_retries options.update({"sql_max_retries": sql_max_retries}) reconnect_interval = conf.DATABASE.reconnect_interval options.update({"reconnect_interval": reconnect_interval}) db.configure_db(options) self.vmap = VlanMap(conf.OVS.vlan_min, conf.OVS.vlan_max) self.vmap.populate_already_used(ovs_db_v2.get_vlans()) def create_network(self, context, network): net = super(OVSQuantumPluginV2, self).create_network(context, network) try: vlan_id = self.vmap.acquire(str(net['id'])) except NoFreeVLANException: super(OVSQuantumPluginV2, self).delete_network(context, net['id']) raise LOG.debug("Created network: %s" % net['id']) ovs_db_v2.add_vlan_binding(vlan_id, str(net['id'])) return net def delete_network(self, context, id): ovs_db_v2.remove_vlan_binding(id) self.vmap.release(id) return super(OVSQuantumPluginV2, self).delete_network(context, id)