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# Copyright 2015 Futurewei. 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.
from oslo_log import helpers as log_helpers
from oslo_log import log as logging
from oslo_utils import excutils
from neutron.i18n import _LE
from neutron import manager
from networking_sfc.db import flowclassifier_db as fc_db
from networking_sfc.extensions import flowclassifier as fc_ext
from networking_sfc.services.flowclassifier.common import context as fc_ctx
from networking_sfc.services.flowclassifier.common import exceptions as fc_exc
from networking_sfc.services.flowclassifier import driver_manager as fc_driver
LOG = logging.getLogger(__name__)
class FlowClassifierPlugin(fc_db.FlowClassifierDbPlugin):
"""Implementation of the Plugin."""
supported_extension_aliases = [fc_ext.FLOW_CLASSIFIER_EXT]
path_prefix = fc_ext.FLOW_CLASSIFIER_PREFIX
def __init__(self):
self.driver_manager = fc_driver.FlowClassifierDriverManager()
super(FlowClassifierPlugin, self).__init__()
self.driver_manager.initialize()
def _get_port(self, context, id):
port = super(FlowClassifierPlugin, self)._get_port(context, id)
core_plugin = manager.NeutronManager.get_plugin()
return core_plugin.get_port(context, port['id'])
def _get_fixed_ip_from_port(self, context, logical_port, ip_prefix):
if logical_port is not None:
port = self._get_port(context, logical_port)
if (
ip_prefix is None and
'fixed_ips' in port and
port['fixed_ips']
):
for fixed_ip in port['fixed_ips']:
ip_prefix = (
'%s/32' % fixed_ip['ip_address']
)
break
return ip_prefix
@log_helpers.log_method_call
def create_flow_classifier(self, context, flow_classifier):
fc_db = super(FlowClassifierPlugin, self).create_flow_classifier(
context, flow_classifier)
fc_db_context = fc_ctx.FlowClassifierContext(self, context, fc_db)
try:
self.driver_manager.create_flow_classifier(fc_db_context)
except fc_exc.FlowClassifierDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error(_LE("Create flow classifier failed, "
"deleting flow_classifier '%s'"),
fc_db['id'])
self.delete_flow_classifier(context, fc_db['id'])
return fc_db
@log_helpers.log_method_call
def update_flow_classifier(self, context, id, flow_classifier):
original_flowclassifier = self.get_flow_classifier(context, id)
updated_fc = super(FlowClassifierPlugin, self).update_flow_classifier(
context, id, flow_classifier)
fc_db_context = fc_ctx.FlowClassifierContext(
self, context, updated_fc,
original_flowclassifier=original_flowclassifier)
try:
self.driver_manager.update_flow_classifier(fc_db_context)
except fc_exc.FlowClassifierDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error(_LE("Update flow classifier failed, "
"flow_classifier '%s'"),
updated_fc['id'])
return updated_fc
@log_helpers.log_method_call
def delete_flow_classifier(self, context, fc_id):
fc = self.get_flow_classifier(context, fc_id)
fc_context = fc_ctx.FlowClassifierContext(self, context, fc)
try:
self.driver_manager.delete_flow_classifier(fc_context)
except fc_exc.FlowClassfierDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error(_LE("Delete port pair group failed, "
"flow_classifier '%s'"),
fc_id)
super(FlowClassifierPlugin, self).delete_flow_classifier(
context, fc_id)
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