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# Copyright 2018 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 uuid
import time
from lcm.pub.database.models import NfInstModel, OOFDataModel
from lcm.pub.exceptions import NSLCMException
from lcm.pub.msapi.sdc_run_catalog import query_vnfpackage_by_id
from lcm.pub.utils.values import ignore_case_get
from lcm.pub.msapi import resmgr
logger = logging.getLogger(__name__)
class GrantVnf(object):
def __init__(self, grant_data):
self.data = grant_data
def exec_grant(self):
logger.debug("grant data from vnfm:%s", self.data)
if isinstance(self.data, (unicode, str)):
self.data = json.JSONDecoder().decode(self.data)
has_res_tpl = False
grant_type = None
action_type = ignore_case_get(self.data, "operation")
vimConnections = []
if ignore_case_get(self.data, "addResources"):
grant_type = "addResources"
elif ignore_case_get(self.data, "removeResources"):
grant_type = "removeResources"
else:
has_res_tpl = True
for res in ignore_case_get(self.data, grant_type):
if "resourceTemplate" in res:
has_res_tpl = True
break
if not has_res_tpl:
m_vnf_inst_id = ignore_case_get(self.data, "vnfInstanceId")
additional_param = ignore_case_get(self.data, "additionalparams")
vnfm_inst_id = ignore_case_get(additional_param, "vnfmid")
vim_id = ignore_case_get(additional_param, "vimid")
if vnfm_inst_id and vnfm_inst_id != "":
vnfinsts = NfInstModel.objects.filter(
mnfinstid=m_vnf_inst_id, vnfm_inst_id=vnfm_inst_id)
else:
vnfinsts = NfInstModel.objects.filter(
mnfinstid=m_vnf_inst_id)
if not vnfinsts:
raise NSLCMException("Vnfinst(%s) is not found in vnfm(%s)" % (
m_vnf_inst_id, vnfm_inst_id))
vnf_pkg_id = vnfinsts[0].package_id
nfpackage_info = query_vnfpackage_by_id(vnf_pkg_id)
vnf_pkg = nfpackage_info["packageInfo"]
vnfd = json.JSONDecoder().decode(vnf_pkg["vnfdModel"])
req_param = {
"vnfInstanceId": m_vnf_inst_id,
"vimId": vim_id,
"vnfLcmOpOccId": ignore_case_get(self.data, "vnfLcmOpOccId"),
"additionalParams": additional_param,
grant_type: []
}
for res in ignore_case_get(self.data, grant_type):
vdu_name = ignore_case_get(res, "vdu")
grant_res = {
"resourceDefinitionId": ignore_case_get(res, "resourceDefinitionId"),
"type": ignore_case_get(res, "type"),
"vdu": vdu_name
}
for vdu in vnfd["vdus"]:
if vdu_name in (vdu["vdu_id"], vdu["properties"].get("name", "")):
grant_res["resourceTemplate"] = self.get_res_tpl(vdu, vnfd)
break
req_param[grant_type].append(grant_res)
self.data = req_param
tmp = resmgr.grant_vnf(self.data)
vimConnections.append(
{
"id": tmp["vim"]["vimId"],
"vimId": tmp["vim"]["vimId"],
"vimType": None,
"interfaceInfo": None,
"accessInfo": tmp["vim"]["accessInfo"],
"extra": None
}
)
grant_resp = {
"id": str(uuid.uuid4()),
"vnfInstanceId": ignore_case_get(self.data, 'vnfInstanceId'),
"vnfLcmOpOccId": ignore_case_get(self.data, "vnfLcmOpOccId"),
"vimConnections": vimConnections
}
logger.debug("action_type=%s" % action_type)
if action_type == 'INSTANTIATE':
for i in range(18):
offs = OOFDataModel.objects.filter(service_resource_id=ignore_case_get(self.data, "vnfInstanceId"))
if not (offs.exists() and offs[0].vdu_info):
logger.debug("Cannot find oof data, retry%s" % (i + 1))
time.sleep(5)
continue
vdu_info = json.loads(offs[0].vdu_info)
grant_resp['vimAssets'] = {'computeResourceFlavours': []}
for vdu in vdu_info:
grant_resp['vimAssets']['computeResourceFlavours'].append({
'vimConnectionId': offs[0].vim_id,
'resourceProviderId': vdu.get("vduName"),
'vnfdVirtualComputeDescId': None, # TODO: required
'vimFlavourId': vdu.get("flavorId")
})
# grant_resp['additionalparams'][off.vim_id] = off.directive
break
logger.debug("grant_resp=%s", grant_resp)
return grant_resp
def get_res_tpl(self, vdu, vnfd):
storage_size = 0
for storage_id in vdu["local_storages"]:
storage_size = storage_size + self.get_storage_size(storage_id, vnfd)
resourceTemplate = {
"virtualComputeDescriptor": {
"virtualCpu": {
"numVirtualCpu": int(vdu["virtual_compute"]["virtual_cpu"]["num_virtual_cpu"])
},
"virtualMemory": {
"virtualMemSize": parse_unit(vdu["virtual_compute"]["virtual_memory"]["virtual_mem_size"], "MB")
}
},
"virtualStorageDescriptor": {
"typeOfStorage": "",
"sizeOfStorage": storage_size,
"swImageDescriptor": ""
}
}
return resourceTemplate
def get_storage_size(self, storage_id, vnfd):
for storage in vnfd["local_storages"]:
if storage_id == storage["local_storage_id"]:
return parse_unit(storage["properties"]["size"], "GB")
return 0
def parse_unit(val, base_unit):
recognized_units = ["B", "kB", "KiB", "MB", "MiB", "GB", "GiB", "TB", "TiB"]
units_rate = [1, 1000, 1024, 1000000, 1048576, 1000000000, 1073741824, 1000000000000, 1099511627776]
unit_rate_map = {unit.upper(): rate for unit, rate in zip(recognized_units, units_rate)}
num_unit = val.strip().split(" ")
if len(num_unit) != 2:
return val.strip()
num, unit = num_unit[0], num_unit[1]
return int(num) * unit_rate_map[unit.upper()] / unit_rate_map[base_unit.upper()]
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