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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 time
import traceback
import uuid
from drf_yasg.utils import swagger_auto_schema
from lcm.ns_sfcs.biz.create_flowcla import CreateFlowClassifier
from lcm.ns_sfcs.biz.create_port_chain import CreatePortChain
from lcm.ns_sfcs.biz.create_portpairgp import CreatePortPairGroup
from lcm.ns_sfcs.biz.create_sfc_worker import CreateSfcWorker
from lcm.ns_sfcs.serializers.serializers import CreateFlowClaSerializer
from lcm.ns_sfcs.serializers.serializers import CreatePortChainSerializer
from lcm.ns_sfcs.serializers.serializers import CreatePortPairGpSerializer
from lcm.ns_sfcs.serializers.serializers import CreateSfcInstReqSerializer, CreateSfcInstRespSerializer
from lcm.ns_sfcs.serializers.serializers import CreateSfcReqSerializer, CreateSfcRespSerializer
from lcm.ns_sfcs.biz.sfc_instance import SfcInstance
from rest_framework import status
from rest_framework.response import Response
from rest_framework.views import APIView
from lcm.pub.exceptions import BadRequestException, NSLCMException
from lcm.ns_sfcs.biz.utils import get_fp_id, ignorcase_get
logger = logging.getLogger(__name__)
def view_safe_call_with_log(logger):
def view_safe_call(func):
def wrapper(*args, **kwargs):
try:
return func(*args, **kwargs)
except BadRequestException as e:
logger.error(e.args[0])
return make_error_resp(
detail=e.args[0],
status=status.HTTP_400_BAD_REQUEST
)
except NSLCMException as e:
logger.error(e.args[0])
return make_error_resp(
detail=e.args[0],
status=status.HTTP_500_INTERNAL_SERVER_ERROR
)
except Exception as e:
logger.error(e.args[0])
logger.error(traceback.format_exc())
return make_error_resp(
detail='Unexpected exception',
status=status.HTTP_500_INTERNAL_SERVER_ERROR
)
return wrapper
return view_safe_call
def make_error_resp(status, detail):
return Response(
data={
'error': detail
},
status=status
)
class SfcInstanceView(APIView):
@swagger_auto_schema(
request_body=CreateSfcInstReqSerializer(),
responses={
status.HTTP_200_OK: CreateSfcInstRespSerializer(),
status.HTTP_500_INTERNAL_SERVER_ERROR: "Inner error"
}
)
@view_safe_call_with_log(logger)
def post(self, request):
try:
req_serializer = CreateSfcInstReqSerializer(data=request.data)
if not req_serializer.is_valid():
raise BadRequestException(req_serializer.errors)
data = {
'nsinstid': request.data['nsInstanceId'],
"ns_model_data": json.loads(request.data['context']),
'fpindex': request.data['fpindex'],
'fpinstid': str(uuid.uuid4()),
'sdncontrollerid': request.data["sdnControllerId"]}
rsp = SfcInstance(data).do_biz()
resp_serializer = CreateSfcInstRespSerializer(data=rsp)
if not resp_serializer.is_valid():
raise NSLCMException(resp_serializer.errors)
return Response(data=rsp, status=status.HTTP_200_OK)
except Exception as e:
logger.error(traceback.format_exc())
return Response(data={'error': e.args[0]}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
class PortPairGpView(APIView):
@swagger_auto_schema(
request_body=CreatePortPairGpSerializer(),
responses={
status.HTTP_200_OK: 'successful'
}
)
def post(self, request):
req_serializer = CreatePortPairGpSerializer(data=request.data)
if not req_serializer.is_valid():
logger.error(req_serializer.errors)
data = {
'fpinstid': request.data["fpinstid"],
"ns_model_data": json.loads(request.data['context']),
'nsinstid': request.data["nsinstanceid"]}
CreatePortPairGroup(data).do_biz()
return Response(status=status.HTTP_200_OK)
class FlowClaView(APIView):
@swagger_auto_schema(
request_body=CreateFlowClaSerializer(),
responses={
status.HTTP_200_OK: 'successful'
}
)
def post(self, request):
req_serializer = CreateFlowClaSerializer(data=request.data)
if not req_serializer.is_valid():
logger.error(req_serializer.errors)
data = {
'fpinstid': request.data["fpinstid"],
"ns_model_data": json.loads(request.data['context'])}
CreateFlowClassifier(data).do_biz()
return Response(status=status.HTTP_200_OK)
class PortChainView(APIView):
@swagger_auto_schema(
request_body=CreatePortChainSerializer(),
responses={
status.HTTP_200_OK: 'successful'
}
)
def post(self, request):
req_serializer = CreatePortChainSerializer(data=request.data)
if not req_serializer.is_valid():
logger.error(req_serializer.errors)
data = {
'fpinstid': request.data["fpinstid"],
"ns_model_data": json.loads(request.data['context'])}
CreatePortChain(data).do_biz()
return Response(status=status.HTTP_200_OK)
class SfcView(APIView):
@swagger_auto_schema(
request_body=CreateSfcReqSerializer(),
responses={
status.HTTP_200_OK: CreateSfcRespSerializer()
}
)
@view_safe_call_with_log(logger)
def post(self, request):
try:
logger.info("Create Service Function Chain start")
logger.info("service_function_chain_request: %s" % json.dumps(request.data))
logger.info("service_function_chain_context : %s" % json.dumps(request.data['context']))
logger.info("service_function_chain_context : %s" % request.data['context'])
logger.info("service_function_chain_instanceid : %s" % ignorcase_get(request.data, 'nsInstanceId'))
logger.info("service_function_chain_sdncontrollerid : %s" % ignorcase_get(request.data, 'sdnControllerId'))
logger.info("service_function_chain_fpindex : %s" % ignorcase_get(request.data, 'fpindex'))
ns_model_data = json.loads(request.data['context'])
req_serializer = CreateSfcReqSerializer(data=request.data)
if not req_serializer.is_valid():
raise BadRequestException(req_serializer.errors)
except Exception as e:
logger.error("Exception occurs: %s", e.args[0])
logger.error(traceback.format_exc())
data = {
'nsinstid': ignorcase_get(request.data, 'nsInstanceId'),
"ns_model_data": ns_model_data,
'fpindex': get_fp_id(ignorcase_get(request.data, 'fpindex'), ns_model_data),
'fpinstid': str(uuid.uuid4()),
'sdncontrollerid': ignorcase_get(request.data, 'sdnControllerId')
}
logger.info("Save FPInstModel start: ")
SfcInstance(data).do_biz()
logger.info("Save FPInstModel end: ")
worker = CreateSfcWorker(data)
job_id = worker.init_data()
worker.start()
logger.info("Service Function Chain Thread Sleep start : %s" % time.ctime())
time.sleep(2)
logger.info("Service Function Chain Thread Sleep end: %s" % time.ctime())
logger.info("Create Service Function Chain end")
resp_serializer = CreateSfcRespSerializer(data={"jobId": job_id, "sfcInstId": data["fpinstid"]})
if not resp_serializer.is_valid():
logger.error(resp_serializer.errors)
return Response(data={"jobId": job_id, "sfcInstId": data["fpinstid"]}, status=status.HTTP_200_OK)
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