# 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. import ConfigParser import logging as LOG from optparse import OptionParser import os import sys from quantum.common import exceptions as q_exc from quantum.quantum_plugin_base import QuantumPluginBase import quantum.db.api as db import ovs_db CONF_FILE = "ovs_quantum_plugin.ini" LOG.basicConfig(level=LOG.WARN) LOG.getLogger("ovs_quantum_plugin") def find_config(basepath): for root, dirs, files in os.walk(basepath): if CONF_FILE in files: return os.path.join(root, CONF_FILE) return None class VlanMap(object): vlans = {} def __init__(self): for x in xrange(2, 4094): self.vlans[x] = None def set(self, vlan_id, network_id): self.vlans[vlan_id] = network_id def acquire(self, network_id): for x in xrange(2, 4094): if self.vlans[x] == None: self.vlans[x] = network_id # LOG.debug("VlanMap::acquire %s -> %s" % (x, network_id)) return x raise Exception("No free vlans..") def get(self, vlan_id): return self.vlans[vlan_id] def release(self, network_id): for x in self.vlans.keys(): if self.vlans[x] == network_id: self.vlans[x] = None # LOG.debug("VlanMap::release %s" % (x)) return LOG.error("No vlan found with network \"%s\"" % network_id) class OVSQuantumPlugin(QuantumPluginBase): def __init__(self, configfile=None): config = ConfigParser.ConfigParser() if configfile == None: if os.path.exists(CONF_FILE): configfile = CONF_FILE else: configfile = find_config(os.path.abspath( os.path.dirname(__file__))) if configfile == None: raise Exception("Configuration file \"%s\" doesn't exist" % (configfile)) LOG.debug("Using configuration file: %s" % configfile) config.read(configfile) LOG.debug("Config: %s" % config) DB_NAME = config.get("DATABASE", "name") DB_USER = config.get("DATABASE", "user") DB_PASS = config.get("DATABASE", "pass") DB_HOST = config.get("DATABASE", "host") options = {"sql_connection": "mysql://%s:%s@%s/%s" % (DB_USER, DB_PASS, DB_HOST, DB_NAME)} db.configure_db(options) self.vmap = VlanMap() # Populate the map with anything that is already present in the # database vlans = ovs_db.get_vlans() for x in vlans: vlan_id, network_id = x # LOG.debug("Adding already populated vlan %s -> %s" # % (vlan_id, network_id)) self.vmap.set(vlan_id, network_id) def get_all_networks(self, tenant_id): 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)) return nets def _make_net_dict(self, net_id, net_name, ports): res = {'net-id': net_id, 'net-name': net_name} if ports: res['net-ports'] = ports return res def create_network(self, tenant_id, net_name): net = db.network_create(tenant_id, net_name) LOG.debug("Created network: %s" % net) vlan_id = self.vmap.acquire(str(net.uuid)) ovs_db.add_vlan_binding(vlan_id, str(net.uuid)) return self._make_net_dict(str(net.uuid), net.name, []) def delete_network(self, 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, []) def get_network_details(self, 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) def rename_network(self, tenant_id, net_id, new_name): net = db.network_rename(net_id, tenant_id, new_name) return self._make_net_dict(str(net.uuid), net.name, None) def _make_port_dict(self, port_id, port_state, net_id, attachment): return {'port-id': port_id, 'port-state': port_state, 'net-id': net_id, 'attachment': attachment} def get_all_ports(self, tenant_id, net_id): ids = [] ports = db.port_list(net_id) for p in ports: LOG.debug("Appending port: %s" % p.uuid) d = self._make_port_dict(str(p.uuid), p.state, p.network_id, p.interface_id) ids.append(d) return ids def create_port(self, tenant_id, net_id, port_state=None): LOG.debug("Creating port with network_id: %s" % net_id) port = db.port_create(net_id, port_state) return self._make_port_dict(str(port.uuid), port.state, port.network_id, port.interface_id) def delete_port(self, tenant_id, net_id, port_id): port = db.port_destroy(port_id, net_id) return self._make_port_dict(str(port.uuid), port.state, port.network_id, port.interface_id) def update_port(self, tenant_id, net_id, port_id, port_state): """ Updates the state of a port on the specified Virtual Network. """ LOG.debug("update_port() called\n") port = db.port_get(port_id, net_id) db.port_set_state(port_id, net_id, port_state) return self._make_port_dict(str(port.uuid), port.state, port.network_id, port.interface_id) def get_port_details(self, tenant_id, net_id, port_id): port = db.port_get(port_id, net_id) return self._make_port_dict(str(port.uuid), port.state, port.network_id, port.interface_id) def plug_interface(self, tenant_id, net_id, port_id, remote_iface_id): db.port_set_attachment(port_id, net_id, remote_iface_id) def unplug_interface(self, tenant_id, net_id, port_id): db.port_set_attachment(port_id, net_id, "") def get_interface_details(self, tenant_id, net_id, port_id): res = db.port_get(port_id, net_id) return res.interface_id