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# Copyright 2016 ZTE Corporation.
#
# 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.
import json
import logging
import traceback
from lcm.pub.database.models import FPInstModel, VNFFGInstModel
from lcm.pub.exceptions import NSLCMException
from lcm.pub.msapi import extsys, resmgr, sdncdriver
logger = logging.getLogger(__name__)
class DeleteSfcs(object):
def __init__(self, sfc_inst_id):
self.sfc_inst_id = sfc_inst_id
self.ns_inst_id = ""
def do(self):
try:
sfc_inst_info = FPInstModel.objects.filter(fpinstid=self.sfc_inst_id)
if not sfc_inst_info:
logger.warn("sfc inst id(%s) is not exist or has been already deleted" % self.sfc_inst_id)
return {"result": 0, "detail": "sfc is not exist or has been already deleted"}
self.ns_inst_id = sfc_inst_info[0].nsinstid
self.delete_sfc_from_driver(sfc_inst_info[0])
self.delete_sfc_from_resmgr()
self.delete_sfc_from_db(sfc_inst_info)
return {"result": 0, "detail": "delete sfc success"}
except NSLCMException as e:
return self.exception_handle(e)
except Exception as e:
logger.error(traceback.format_exc())
return self.exception_handle(e)
def exception_handle(self, e):
detail = 'sfc delete failed, detail message: %s' % e.args[0]
logger.error(detail)
return {"result": 1, "detail": detail}
def delete_sfc_from_driver(self, sfc_inst_info):
sdn_controller_id = sfc_inst_info.sdncontrollerid
sdn_controller_url = extsys.get_sdn_controller_by_id(sdn_controller_id)["url"]
sfc_id = sfc_inst_info.sfcid
flow_classifiers = sfc_inst_info.flowclassifiers
port_pair_groups = sfc_inst_info.portpairgroups
if sfc_id:
req_param = {"sdnControllerId": sdn_controller_id, "url": sdn_controller_url, "id": sfc_id}
sdncdriver.delete_port_chain(req_param)
if flow_classifiers:
for flow_id in flow_classifiers.split(","):
req_param = {"sdnControllerId": sdn_controller_id, "url": sdn_controller_url, "id": flow_id}
sdncdriver.delete_flow_classifier(req_param)
if port_pair_groups:
for group in json.JSONDecoder().decode(port_pair_groups):
group_id = group["groupid"]
req_param = {"sdnControllerId": sdn_controller_id, "url": sdn_controller_url, "id": group_id}
sdncdriver.delete_port_pair_group(req_param)
port_pair = group["portpair"]
for port_pair_id in port_pair:
req_param = {"sdnControllerId": sdn_controller_id, "url": sdn_controller_url, "id": port_pair_id}
sdncdriver.delete_port_pair(req_param)
def delete_sfc_from_db(self, sfc_inst_info):
# do_biz_with_share_lock("delete-sfclist-in-vnffg-%s" % self.ns_inst_id, self.delete_sfc_inst_id_in_vnffg)
self.delete_sfc_inst_id_in_vnffg()
sfc_inst_info.delete()
def delete_sfc_from_resmgr(self):
resmgr.delete_sfc(self.sfc_inst_id)
def delete_sfc_inst_id_in_vnffg(self):
for vnffg_info in VNFFGInstModel.objects.filter(nsinstid=self.ns_inst_id):
new_sfc_id_list = ""
for old_sfc_id in vnffg_info.fplist.split(","):
if old_sfc_id != self.sfc_inst_id:
new_sfc_id_list += old_sfc_id + ","
new_sfc_id_list = new_sfc_id_list[:-1]
VNFFGInstModel.objects.filter(vnffginstid=vnffg_info.vnffginstid).update(fplist=new_sfc_id_list)
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