1 # Copyright (C) 2018 Verizon. All Rights Reserved.
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
18 from threading import Thread
20 from lcm.nf.biz import common
21 from lcm.nf.biz.grant_vnf import grant_resource
22 from lcm.nf.const import VNF_STATUS, GRANT_TYPE, CHANGE_TYPE
23 from lcm.nf.const import RESOURCE_MAP, OPERATION_STATE_TYPE
24 from lcm.nf.const import INSTANTIATION_STATE
25 from lcm.pub.database.models import NfInstModel
26 from lcm.pub.database.models import VNFCInstModel, PortInstModel
27 from lcm.pub.database.models import VmInstModel
28 from lcm.pub.exceptions import NFLCMException
29 from lcm.pub.utils.notificationsutil import NotificationsUtil, prepare_notification
30 from lcm.pub.utils.values import ignore_case_get
31 from lcm.pub.utils.jobutil import JobUtil
32 from lcm.pub.utils.timeutil import now_time
33 from lcm.pub.vimapi import adaptor
35 logger = logging.getLogger(__name__)
40 class ScaleVnf(Thread):
41 def __init__(self, data, nf_inst_id, job_id):
42 super(ScaleVnf, self).__init__()
44 self.nf_inst_id = nf_inst_id
46 self.vnf_insts = NfInstModel.objects.filter(nfinstid=self.nf_inst_id)
53 JobUtil.add_job_status(self.job_id,
56 self.vnf_insts.update(status=INSTANTIATION_STATE.INSTANTIATED,
57 lastuptime=now_time())
58 except NFLCMException as e:
59 logger.error(e.message)
60 self.vnf_scale_failed_handle(e.message)
61 except Exception as e:
62 logger.error(e.message)
63 logger.error(traceback.format_exc())
64 self.vnf_scale_failed_handle(e.message)
67 self.scale_type = self.data.get("type")
68 self.aspect_id = self.data.get("aspectId")
69 self.number_of_steps = int(self.data.get("numberOfSteps", DEFAULT_STEPS))
70 self.additional_params = self.data.get("additionalParams", {})
71 self.is_scale_in = (self.scale_type == GRANT_TYPE.SCALE_IN)
72 self.vnfd_info = json.loads(self.vnf_insts[0].vnfd_model)
73 self.step_delta = self.get_scale_step_delta()
74 self.target_vdu, self.step_inst_num = self.get_vdu_scale_aspect_deltas()
75 self.scale_inst_num = self.number_of_steps * self.step_inst_num
76 self.min_instance_num, self.max_instance_num = self.get_instance_range()
77 self.check_if_can_scale()
78 self.scale_out_resource = {}
80 def apply_grant(self):
81 logger.debug("Start scale apply grant")
82 vdus = ignore_case_get(self.vnfd_info, "vdus")
83 scale_vdus = [vdu for vdu in vdus if vdu["vdu_id"] == self.target_vdu]
84 scale_vdus = scale_vdus * self.scale_inst_num
85 grant_result = grant_resource(data=self.data,
86 nf_inst_id=self.nf_inst_id,
88 grant_type=self.scale_type,
90 logger.debug("Scale Grant result: %s", grant_result)
91 self.set_location(grant_result)
93 def do_operation(self):
94 logger.debug("Start %s VNF resource", self.scale_type)
95 logger.debug('VnfdInfo = %s' % self.vnfd_info)
98 self.affected_vnfcs = []
99 self.scale_in_resource = self.get_scale_in_resource(self.affected_vnfcs)
100 adaptor.delete_vim_res(self.scale_in_resource, self.do_notify_del_vim_res)
102 self.scale_out_resource = {
110 self.vnfd_info["volume_storages"] = []
111 self.vnfd_info["vls"] = []
112 self.vnfd_info["cps"] = self.vnfd_info["cps"] * self.scale_inst_num
113 for cp in self.vnfd_info["cps"]:
114 # TODO: how to set name for scale_out cp
115 cp["properties"]["name"] = cp["cp_id"] + str(uuid.uuid4())
116 cp_inst = PortInstModel.objects.filter(name__startswith=cp["cp_id"]).first()
118 cp["networkId"] = cp_inst.networkid
119 cp["subnetId"] = cp_inst.subnetworkid
121 raise NFLCMException("CP(%s) does not exist" % cp["cp_id"])
122 self.vnfd_info["vdus"] = self.vnfd_info["vdus"] * self.scale_inst_num
123 for vdu in self.vnfd_info["vdus"]:
124 # TODO: how to set name for scale_out vdu
125 vdu["properties"]["name"] = vdu["properties"]["name"] + str(uuid.uuid4())
127 vim_cache = json.loads(self.vnf_insts[0].vimInfo)
128 res_cache = json.loads(self.vnf_insts[0].resInfo)
129 adaptor.create_vim_res(self.vnfd_info,
130 self.do_notify_create_vim_res,
133 self.vnf_insts.update(vimInfo=json.dumps(vim_cache),
134 resInfo=json.dumps(res_cache))
135 logger.debug("%s VNF resource finish", self.scale_type)
137 def send_notification(self):
138 data = prepare_notification(nfinstid=self.nf_inst_id,
140 operation=self.op_type,
141 operation_state=OPERATION_STATE_TYPE.COMPLETED)
143 # TODO: need set changedExtConnectivity for data
145 data["affectedVnfcs"] = self.affected_vnfcs
147 for vm in self.scale_out_resource["vm"]:
148 self.set_affected_vnfcs(data["affectedVnfcs"], vm["res_id"])
150 logger.debug('Notify request data = %s' % data)
151 NotificationsUtil().send_notification(data)
153 def rollback_operation(self):
155 # SCALE_IN operaion does not support rollback
157 adaptor.delete_vim_res(self.scale_out_resource, self.do_notify_del_vim_res)
159 def set_location(self, grant_result):
160 vim_connections = ignore_case_get(grant_result, "vimConnections")
161 access_info = ignore_case_get(vim_connections[0], "accessInfo")
162 tenant = ignore_case_get(access_info, "tenant")
163 vimid = ignore_case_get(vim_connections[0], "vimId")
165 for resource_type in ['vdus', 'vls', 'cps', 'volume_storages']:
166 for resource in ignore_case_get(self.vnfd_info, resource_type):
167 if "location_info" not in resource["properties"]:
168 resource["properties"]["location_info"] = {}
169 resource["properties"]["location_info"]["vimid"] = vimid
170 resource["properties"]["location_info"]["tenant"] = tenant
172 def do_notify_create_vim_res(self, res_type, ret):
173 logger.debug('Scaling out [%s] resource' % res_type)
174 resource_save_method = getattr(common, res_type + '_save')
175 resource_save_method(self.job_id, self.nf_inst_id, ret)
176 self.scale_out_resource[res_type].append(self.gen_del_resource(ret))
178 def do_notify_del_vim_res(self, res_type, res_id):
179 logger.debug('Scaling in [%s] resource, resourceid [%s]', res_type, res_id)
180 resource_type = RESOURCE_MAP.keys()[RESOURCE_MAP.values().index(res_type)]
181 resource_table = globals().get(resource_type + 'InstModel')
182 resource_table.objects.filter(instid=self.nf_inst_id, resourceid=res_id).delete()
184 VNFCInstModel.objects.filter(instid=self.nf_inst_id, vmid=res_id).delete()
186 def get_scale_in_resource(self, affected_vnfcs):
187 scale_in_resource = {
195 scale_in_vms = VmInstModel.objects.filter(instid=self.nf_inst_id)
196 vms_count = scale_in_vms.count()
197 for index in range(self.scale_inst_num):
198 vm_index = vms_count - index - 1
199 scale_in_resource["vm"].append(self.gen_del_resource(scale_in_vms[vm_index]))
200 self.set_affected_vnfcs(affected_vnfcs, scale_in_vms[vm_index].resourceid)
201 return scale_in_resource
203 def gen_del_resource(self, res):
204 is_dict = isinstance(res, dict)
206 "vim_id": res["vimId"] if is_dict else res.vimid,
207 "tenant_id": res["tenantId"] if is_dict else res.tenant,
208 "res_id": res["id"] if is_dict else res.resourceid,
209 "is_predefined": res["returnCode"] if is_dict else res.is_predefined
212 def get_scale_step_delta(self):
213 for policy in self.vnfd_info.get("policies", []):
214 if policy.get("type") != "tosca.policies.nfv.ScalingAspects":
216 aspects = policy["properties"]["aspects"]
217 if self.aspect_id in aspects:
218 return aspects.get(self.aspect_id).get("step_deltas")[0]
219 raise NFLCMException("Aspect(%s) does not exist" % self.aspect_id)
221 def get_vdu_scale_aspect_deltas(self):
222 for policy in self.vnfd_info.get("policies", []):
223 if policy.get("type") != "tosca.policies.nfv.VduScalingAspectDeltas":
225 target = policy.get("targets")[0]
226 deltas = policy["properties"]["deltas"]
227 if self.step_delta in deltas:
228 num = int(deltas.get(self.step_delta).get("number_of_instances"))
230 raise NFLCMException("Aspect step delta(%s) does not exist" % self.step_delta)
232 def get_instance_range(self):
233 for vdu in self.vnfd_info["vdus"]:
234 if vdu["vdu_id"] == self.target_vdu:
235 vdu_profile = vdu["properties"]["vdu_profile"]
236 min_inst_num = int(vdu_profile["min_number_of_instances"])
237 max_inst_num = int(vdu_profile["max_number_of_instances"])
238 return min_inst_num, max_inst_num
239 raise NFLCMException("VDU(%s) does not exist" % self.target_vdu)
241 def check_if_can_scale(self):
242 cur_inst_num = VNFCInstModel.objects.filter(instid=self.nf_inst_id).count()
244 if cur_inst_num - self.scale_inst_num < self.min_instance_num:
245 msg = "VNF(%s) cannot be scaled: less than min instance."
246 raise NFLCMException(msg % self.nf_inst_id)
248 if cur_inst_num + self.scale_inst_num > self.max_instance_num:
249 msg = "VNF(%s) cannot be scaled: max instance exceeded."
250 raise NFLCMException(msg % self.nf_inst_id)
252 def set_affected_vnfcs(self, affected_vnfcs, vm_id):
253 chgtype = CHANGE_TYPE.REMOVED if self.is_scale_in else CHANGE_TYPE.ADDED
254 vnfcs = VNFCInstModel.objects.filter(instid=self.nf_inst_id, vmid=vm_id)
255 vm = VmInstModel.objects.filter(instid=self.nf_inst_id, resourceid=vm_id)
259 'vimConnectionId': vm[0].vimid,
260 'resourceId': vm[0].resourceid,
261 'vimLevelResourceType': 'vm'
264 affected_vnfcs.append({
265 'id': vnfcs[0].vnfcinstanceid,
266 'vduId': vnfcs[0].vduid,
267 'changeType': chgtype,
268 'computeResource': vm_resource
271 def vnf_scale_failed_handle(self, error_msg):
272 logger.error('VNF scaling failed, detail message: %s', error_msg)
273 self.vnf_insts.update(status=VNF_STATUS.FAILED,
274 lastuptime=now_time())
275 JobUtil.add_job_status(self.job_id, 255, error_msg)