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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_lib.db import api as db_api
from networking_sfc.db import sfc_db
from networking_sfc.extensions import servicegraph as sg_ext
from networking_sfc.extensions import sfc as sfc_ext
from networking_sfc.extensions import tap as tap_ext
from networking_sfc.services.sfc.common import context as sfc_ctx
from networking_sfc.services.sfc.common import exceptions as sfc_exc
from networking_sfc.services.sfc import driver_manager as sfc_driver
LOG = logging.getLogger(__name__)
class SfcPlugin(sfc_db.SfcDbPlugin):
"""SFC plugin implementation."""
# REVISIT(vks1) This should be changed to string instead of importing
# extensions explicitly. So that even if extensions increase in future,
# imports do not.
supported_extension_aliases = [sfc_ext.SFC_EXT, sg_ext.SG_EXT,
tap_ext.TAP_EXT]
path_prefix = sfc_ext.SFC_PREFIX
def __init__(self):
self.driver_manager = sfc_driver.SfcDriverManager()
super().__init__()
self.driver_manager.initialize()
@log_helpers.log_method_call
def create_port_chain(self, context, port_chain):
with db_api.CONTEXT_WRITER.using(context):
port_chain_db = super().create_port_chain(
context, port_chain)
portchain_db_context = sfc_ctx.PortChainContext(
self, context, port_chain_db)
self.driver_manager.create_port_chain_precommit(
portchain_db_context)
try:
self.driver_manager.create_port_chain_postcommit(
portchain_db_context)
except sfc_exc.SfcDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error("Create port chain failed, "
"deleting port_chain '%s'",
port_chain_db['id'])
self.delete_port_chain(context, port_chain_db['id'])
return port_chain_db
@log_helpers.log_method_call
def update_port_chain(self, context, id, port_chain):
with db_api.CONTEXT_WRITER.using(context):
original_portchain = self.get_port_chain(context, id)
updated_portchain = super().update_port_chain(
context, id, port_chain)
portchain_db_context = sfc_ctx.PortChainContext(
self, context, updated_portchain,
original_portchain=original_portchain)
self.driver_manager.update_port_chain_precommit(
portchain_db_context)
try:
self.driver_manager.update_port_chain_postcommit(
portchain_db_context)
except sfc_exc.SfcDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error("Update port chain failed, port_chain '%s'",
updated_portchain['id'])
# TODO(qijing): should we rollback the database update here?
return updated_portchain
@log_helpers.log_method_call
def delete_port_chain(self, context, id):
pc = self.get_port_chain(context, id)
pc_context = sfc_ctx.PortChainContext(self, context, pc)
try:
self.driver_manager.delete_port_chain(pc_context)
except sfc_exc.SfcDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error("Delete port chain failed, portchain '%s'", id)
# TODO(qijing): unsync in case deleted in driver but fail in database
with db_api.CONTEXT_WRITER.using(context):
pc = self.get_port_chain(context, id)
pc_context = sfc_ctx.PortChainContext(self, context, pc)
super().delete_port_chain(context, id)
self.driver_manager.delete_port_chain_precommit(pc_context)
self.driver_manager.delete_port_chain_postcommit(pc_context)
@log_helpers.log_method_call
def create_port_pair(self, context, port_pair):
with db_api.CONTEXT_WRITER.using(context):
portpair_db = super().create_port_pair(
context, port_pair)
portpair_context = sfc_ctx.PortPairContext(
self, context, portpair_db)
self.driver_manager.create_port_pair_precommit(portpair_context)
try:
self.driver_manager.create_port_pair_postcommit(portpair_context)
except sfc_exc.SfcDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error("Create port pair failed, "
"deleting port_pair '%s'",
portpair_db['id'])
self.delete_port_pair(context, portpair_db['id'])
return portpair_db
@log_helpers.log_method_call
def update_port_pair(self, context, id, port_pair):
with db_api.CONTEXT_WRITER.using(context):
original_portpair = self.get_port_pair(context, id)
updated_portpair = super().update_port_pair(
context, id, port_pair)
portpair_context = sfc_ctx.PortPairContext(
self, context, updated_portpair,
original_portpair=original_portpair)
self.driver_manager.update_port_pair_precommit(portpair_context)
try:
self.driver_manager.update_port_pair_postcommit(portpair_context)
except sfc_exc.SfcDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error("Update port pair failed, port_pair '%s'",
updated_portpair['id'])
return updated_portpair
@log_helpers.log_method_call
def delete_port_pair(self, context, id):
portpair = self.get_port_pair(context, id)
portpair_context = sfc_ctx.PortPairContext(
self, context, portpair)
try:
self.driver_manager.delete_port_pair(portpair_context)
except sfc_exc.SfcDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error("Delete port pair failed, port_pair '%s'", id)
with db_api.CONTEXT_WRITER.using(context):
portpair = self.get_port_pair(context, id)
portpair_context = sfc_ctx.PortPairContext(
self, context, portpair)
super().delete_port_pair(context, id)
self.driver_manager.delete_port_pair_precommit(portpair_context)
self.driver_manager.delete_port_pair_postcommit(portpair_context)
@log_helpers.log_method_call
def create_port_pair_group(self, context, port_pair_group):
with db_api.CONTEXT_WRITER.using(context):
portpairgroup_db = super().create_port_pair_group(
context, port_pair_group)
portpairgroup_context = sfc_ctx.PortPairGroupContext(
self, context, portpairgroup_db)
self.driver_manager.create_port_pair_group_precommit(
portpairgroup_context)
try:
self.driver_manager.create_port_pair_group_postcommit(
portpairgroup_context)
except sfc_exc.SfcDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error("Create port pair group failed, "
"deleting port_pair_group '%s'",
portpairgroup_db['id'])
self.delete_port_pair_group(context, portpairgroup_db['id'])
return portpairgroup_db
@log_helpers.log_method_call
def update_port_pair_group(self, context, id, port_pair_group):
with db_api.CONTEXT_WRITER.using(context):
original_portpairgroup = self.get_port_pair_group(
context, id)
updated_portpairgroup = super().update_port_pair_group(
context, id, port_pair_group)
portpairgroup_context = sfc_ctx.PortPairGroupContext(
self, context, updated_portpairgroup,
original_portpairgroup=original_portpairgroup)
self.driver_manager.update_port_pair_group_precommit(
portpairgroup_context)
try:
self.driver_manager.update_port_pair_group_postcommit(
portpairgroup_context)
except sfc_exc.SfcDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error("Update port pair group failed, "
"port_pair_group '%s'",
updated_portpairgroup['id'])
return updated_portpairgroup
@log_helpers.log_method_call
def delete_port_pair_group(self, context, id):
portpairgroup = self.get_port_pair_group(context, id)
portpairgroup_context = sfc_ctx.PortPairGroupContext(
self, context, portpairgroup)
try:
self.driver_manager.delete_port_pair_group(portpairgroup_context)
except sfc_exc.SfcDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error("Delete port pair group failed, "
"port_pair_group '%s'",
id)
with db_api.CONTEXT_WRITER.using(context):
portpairgroup = self.get_port_pair_group(context, id)
portpairgroup_context = sfc_ctx.PortPairGroupContext(
self, context, portpairgroup)
super().delete_port_pair_group(context, id)
self.driver_manager.delete_port_pair_group_precommit(
portpairgroup_context)
self.driver_manager.delete_port_pair_group_postcommit(
portpairgroup_context)
@log_helpers.log_method_call
def create_service_graph(self, context, service_graph):
with db_api.CONTEXT_WRITER.using(context):
service_graph_db = super().create_service_graph(
context, service_graph)
service_graph_db_context = sfc_ctx.ServiceGraphContext(
self, context, service_graph_db)
self.driver_manager.create_service_graph_precommit(
service_graph_db_context)
try:
self.driver_manager.create_service_graph_postcommit(
service_graph_db_context)
except sfc_exc.SfcDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error("Create Service Graph failed, "
"deleting Service Graph '%s'",
service_graph_db['id'])
self.delete_service_graph(context, service_graph_db['id'])
return service_graph_db
@log_helpers.log_method_call
def update_service_graph(self, context, id, service_graph):
with db_api.CONTEXT_WRITER.using(context):
original_graph = self.get_service_graph(context, id)
updated_graph = super().update_service_graph(
context, id, service_graph)
service_graph_db_context = sfc_ctx.ServiceGraphContext(
self, context, updated_graph,
original_graph=original_graph)
self.driver_manager.update_service_graph_precommit(
service_graph_db_context)
try:
self.driver_manager.update_service_graph_postcommit(
service_graph_db_context)
except sfc_exc.SfcDriverError:
with excutils.save_and_reraise_exception():
LOG.error("Update failed, service_graph '%s'",
updated_graph['id'])
return updated_graph
@log_helpers.log_method_call
def delete_service_graph(self, context, id):
graph = self.get_service_graph(context, id)
graph_context = sfc_ctx.ServiceGraphContext(self, context, graph)
with db_api.CONTEXT_WRITER.using(context):
graph = self.get_service_graph(context, id)
graph_context = sfc_ctx.ServiceGraphContext(self, context, graph)
super().delete_service_graph(context, id)
self.driver_manager.delete_service_graph_precommit(graph_context)
try:
self.driver_manager.delete_service_graph_postcommit(graph_context)
except sfc_exc.SfcDriverError as e:
LOG.exception(e)
with excutils.save_and_reraise_exception():
LOG.error("Delete failed, service_graph '%s'", id)
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