203 lines
7.3 KiB
Python
203 lines
7.3 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 Nicira Networks, 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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# @author: Somik Behera, Nicira Networks, Inc.
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# @author: Brad Hall, Nicira Networks, Inc.
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# @author: Dan Wendlandt, Nicira Networks, Inc.
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import ConfigParser
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import logging as LOG
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from optparse import OptionParser
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import os
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import sys
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from quantum.common import exceptions as q_exc
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from quantum.quantum_plugin_base import QuantumPluginBase
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import quantum.db.api as db
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import ovs_db
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CONF_FILE = "ovs_quantum_plugin.ini"
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LOG.basicConfig(level=LOG.WARN)
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LOG.getLogger("ovs_quantum_plugin")
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def find_config(basepath):
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for root, dirs, files in os.walk(basepath):
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if CONF_FILE in files:
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return os.path.join(root, CONF_FILE)
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return None
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class VlanMap(object):
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vlans = {}
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def __init__(self):
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for x in xrange(2, 4094):
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self.vlans[x] = None
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def set(self, vlan_id, network_id):
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self.vlans[vlan_id] = network_id
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def acquire(self, network_id):
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for x in xrange(2, 4094):
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if self.vlans[x] == None:
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self.vlans[x] = network_id
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# LOG.debug("VlanMap::acquire %s -> %s" % (x, network_id))
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return x
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raise Exception("No free vlans..")
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def get(self, vlan_id):
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return self.vlans[vlan_id]
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def release(self, network_id):
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for x in self.vlans.keys():
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if self.vlans[x] == network_id:
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self.vlans[x] = None
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# LOG.debug("VlanMap::release %s" % (x))
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return
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LOG.error("No vlan found with network \"%s\"" % network_id)
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class OVSQuantumPlugin(QuantumPluginBase):
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def __init__(self, configfile=None):
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config = ConfigParser.ConfigParser()
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if configfile == None:
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if os.path.exists(CONF_FILE):
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configfile = CONF_FILE
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else:
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configfile = find_config(os.path.abspath(
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os.path.dirname(__file__)))
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if configfile == None:
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raise Exception("Configuration file \"%s\" doesn't exist" %
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(configfile))
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LOG.debug("Using configuration file: %s" % configfile)
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config.read(configfile)
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LOG.debug("Config: %s" % config)
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DB_NAME = config.get("DATABASE", "name")
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DB_USER = config.get("DATABASE", "user")
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DB_PASS = config.get("DATABASE", "pass")
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DB_HOST = config.get("DATABASE", "host")
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options = {"sql_connection": "mysql://%s:%s@%s/%s" % (DB_USER,
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DB_PASS, DB_HOST, DB_NAME)}
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db.configure_db(options)
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self.vmap = VlanMap()
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# Populate the map with anything that is already present in the
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# database
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vlans = ovs_db.get_vlans()
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for x in vlans:
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vlan_id, network_id = x
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# LOG.debug("Adding already populated vlan %s -> %s"
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# % (vlan_id, network_id))
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self.vmap.set(vlan_id, network_id)
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def get_all_networks(self, tenant_id):
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nets = []
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for x in db.network_list(tenant_id):
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LOG.debug("Adding network: %s" % x.uuid)
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nets.append(self._make_net_dict(str(x.uuid), x.name, None))
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return nets
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def _make_net_dict(self, net_id, net_name, ports):
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res = {'net-id': net_id,
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'net-name': net_name}
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if ports:
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res['net-ports'] = ports
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return res
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def create_network(self, tenant_id, net_name):
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net = db.network_create(tenant_id, net_name)
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LOG.debug("Created network: %s" % net)
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vlan_id = self.vmap.acquire(str(net.uuid))
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ovs_db.add_vlan_binding(vlan_id, str(net.uuid))
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return self._make_net_dict(str(net.uuid), net.name, [])
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def delete_network(self, tenant_id, net_id):
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net = db.network_get(net_id)
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# Verify that no attachments are plugged into the network
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for port in db.port_list(net_id):
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if port.interface_id:
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raise q_exc.NetworkInUse(net_id=net_id)
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net = db.network_destroy(net_id)
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ovs_db.remove_vlan_binding(net_id)
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self.vmap.release(net_id)
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return self._make_net_dict(str(net.uuid), net.name, [])
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def get_network_details(self, tenant_id, net_id):
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net = db.network_get(net_id)
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ports = self.get_all_ports(tenant_id, net_id)
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return self._make_net_dict(str(net.uuid), net.name, ports)
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def rename_network(self, tenant_id, net_id, new_name):
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net = db.network_rename(net_id, tenant_id, new_name)
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return self._make_net_dict(str(net.uuid), net.name, None)
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def _make_port_dict(self, port_id, port_state, net_id, attachment):
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return {'port-id': port_id,
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'port-state': port_state,
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'net-id': net_id,
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'attachment': attachment}
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def get_all_ports(self, tenant_id, net_id):
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ids = []
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ports = db.port_list(net_id)
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for p in ports:
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LOG.debug("Appending port: %s" % p.uuid)
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d = self._make_port_dict(str(p.uuid), p.state, p.network_id,
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p.interface_id)
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ids.append(d)
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return ids
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def create_port(self, tenant_id, net_id, port_state=None):
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LOG.debug("Creating port with network_id: %s" % net_id)
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port = db.port_create(net_id, port_state)
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return self._make_port_dict(str(port.uuid), port.state,
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port.network_id, port.interface_id)
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def delete_port(self, tenant_id, net_id, port_id):
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port = db.port_destroy(port_id, net_id)
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return self._make_port_dict(str(port.uuid), port.state,
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port.network_id, port.interface_id)
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def update_port(self, tenant_id, net_id, port_id, port_state):
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"""
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Updates the state of a port on the specified Virtual Network.
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"""
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LOG.debug("update_port() called\n")
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port = db.port_get(port_id, net_id)
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db.port_set_state(port_id, net_id, port_state)
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return self._make_port_dict(str(port.uuid), port.state,
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port.network_id, port.interface_id)
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def get_port_details(self, tenant_id, net_id, port_id):
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port = db.port_get(port_id, net_id)
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return self._make_port_dict(str(port.uuid), port.state,
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port.network_id, port.interface_id)
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def plug_interface(self, tenant_id, net_id, port_id, remote_iface_id):
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db.port_set_attachment(port_id, net_id, remote_iface_id)
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def unplug_interface(self, tenant_id, net_id, port_id):
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db.port_set_attachment(port_id, net_id, "")
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def get_interface_details(self, tenant_id, net_id, port_id):
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res = db.port_get(port_id, net_id)
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return res.interface_id
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