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# vim: tabstop=4 shiftwidth=4 softtabstop=4
#
# Copyright 2012 NEC Corporation. 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: Ryota MIBU
from quantum.plugins.nec.common import config
from quantum.plugins.nec.common import exceptions as nexc
from quantum.plugins.nec.db import api as ndb
from quantum.plugins.nec.db import models as nmodels
from quantum.plugins.nec import drivers
class OFCManager(object):
"""This class manages an OpenFlow Controller and map resources.
This class manage an OpenFlow Controller (OFC) with a driver specified in
a configuration of this plugin. This keeps mappings between IDs on Quantum
and OFC for various entities such as Tenant, Network and Filter. A Port on
OFC is identified by a switch ID 'datapath_id' and a port number 'port_no'
of the switch. An ID named as 'ofc_*' is used to identify resource on OFC.
"""
resource_map = {'ofc_tenant': nmodels.OFCTenant,
'ofc_network': nmodels.OFCNetwork,
'ofc_port': nmodels.OFCPort,
'ofc_packet_filter': nmodels.OFCFilter}
def __init__(self):
self.driver = drivers.get_driver(config.OFC.driver)(config.OFC)
def _get_ofc_id(self, resource, quantum_id):
model = self.resource_map[resource]
ofc_item = ndb.find_ofc_item(model, quantum_id)
if not ofc_item:
reason = "NotFound %s for quantum_id=%s." % (resource, quantum_id)
raise nexc.OFCConsistencyBroken(reason=reason)
return ofc_item.id
def _exists_ofc_item(self, resource, quantum_id):
model = self.resource_map[resource]
if ndb.find_ofc_item(model, quantum_id):
return True
else:
return False
# Tenant
def create_ofc_tenant(self, tenant_id):
desc = "ID=%s at OpenStack." % tenant_id
ofc_tenant_id = self.driver.create_tenant(desc, tenant_id)
ndb.add_ofc_item(nmodels.OFCTenant, ofc_tenant_id, tenant_id)
def exists_ofc_tenant(self, tenant_id):
return self._exists_ofc_item("ofc_tenant", tenant_id)
def delete_ofc_tenant(self, tenant_id):
ofc_tenant_id = self._get_ofc_id("ofc_tenant", tenant_id)
self.driver.delete_tenant(ofc_tenant_id)
ndb.del_ofc_item(nmodels.OFCTenant, ofc_tenant_id)
# Network
def create_ofc_network(self, tenant_id, network_id, network_name=None):
ofc_tenant_id = self._get_ofc_id("ofc_tenant", tenant_id)
desc = "ID=%s Name=%s at Quantum." % (network_id, network_name)
ofc_net_id = self.driver.create_network(ofc_tenant_id, desc,
network_id)
ndb.add_ofc_item(nmodels.OFCNetwork, ofc_net_id, network_id)
def update_ofc_network(self, tenant_id, network_id, network_name):
ofc_tenant_id = self._get_ofc_id("ofc_tenant", tenant_id)
ofc_net_id = self._get_ofc_id("ofc_network", network_id)
desc = "ID=%s Name=%s at Quantum." % (network_id, network_name)
self.driver.update_network(ofc_tenant_id, ofc_net_id, desc)
def exists_ofc_network(self, network_id):
return self._exists_ofc_item("ofc_network", network_id)
def delete_ofc_network(self, tenant_id, network_id):
ofc_tenant_id = self._get_ofc_id("ofc_tenant", tenant_id)
ofc_net_id = self._get_ofc_id("ofc_network", network_id)
self.driver.delete_network(ofc_tenant_id, ofc_net_id)
ndb.del_ofc_item(nmodels.OFCNetwork, ofc_net_id)
# Port
def create_ofc_port(self, tenant_id, network_id, port_id):
ofc_tenant_id = self._get_ofc_id("ofc_tenant", tenant_id)
ofc_net_id = self._get_ofc_id("ofc_network", network_id)
portinfo = ndb.get_portinfo(port_id)
if not portinfo:
raise nexc.PortInfoNotFound(id=port_id)
ofc_port_id = self.driver.create_port(ofc_tenant_id, ofc_net_id,
portinfo, port_id)
ndb.add_ofc_item(nmodels.OFCPort, ofc_port_id, port_id)
def exists_ofc_port(self, port_id):
return self._exists_ofc_item("ofc_port", port_id)
def delete_ofc_port(self, tenant_id, network_id, port_id):
ofc_tenant_id = self._get_ofc_id("ofc_tenant", tenant_id)
ofc_net_id = self._get_ofc_id("ofc_network", network_id)
ofc_port_id = self._get_ofc_id("ofc_port", port_id)
self.driver.delete_port(ofc_tenant_id, ofc_net_id, ofc_port_id)
ndb.del_ofc_item(nmodels.OFCPort, ofc_port_id)
# PacketFilter
def create_ofc_packet_filter(self, tenant_id, network_id, filter_id,
filter_dict):
ofc_tenant_id = self._get_ofc_id("ofc_tenant", tenant_id)
ofc_net_id = self._get_ofc_id("ofc_network", network_id)
in_port_id = filter_dict.get('in_port')
portinfo = None
if in_port_id:
portinfo = ndb.get_portinfo(in_port_id)
if not portinfo:
raise nexc.PortInfoNotFound(id=in_port_id)
ofc_pf_id = self.driver.create_filter(ofc_tenant_id, ofc_net_id,
filter_dict, portinfo, filter_id)
ndb.add_ofc_item(nmodels.OFCFilter, ofc_pf_id, filter_id)
def exists_ofc_packet_filter(self, filter_id):
return self._exists_ofc_item("ofc_packet_filter", filter_id)
def delete_ofc_packet_filter(self, tenant_id, network_id, filter_id):
ofc_tenant_id = self._get_ofc_id("ofc_tenant", tenant_id)
ofc_net_id = self._get_ofc_id("ofc_network", network_id)
ofc_pf_id = self._get_ofc_id("ofc_packet_filter", filter_id)
res = self.driver.delete_filter(ofc_tenant_id, ofc_net_id, ofc_pf_id)
ndb.del_ofc_item(nmodels.OFCFilter, ofc_pf_id)
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