lcm/ns_vnfs/biz/grant_vnfs.py

   1 # Copyright 2016 ZTE Corporation.
   2 #
   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
   6 #
   7 #         http://www.apache.org/licenses/LICENSE-2.0
   8 #
   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.
  14
  15 import json
  16 import logging
  17
  18 from lcm.pub.database.models import NfInstModel
  19 from lcm.pub.exceptions import NSLCMException
  20 from lcm.pub.msapi import resmgr
  21 from lcm.pub.msapi.sdc_run_catalog import query_vnfpackage_by_id
  22 from lcm.pub.utils.values import ignore_case_get
  23 from lcm.ns_vnfs.const import SCALAR_UNIT_DICT
  24
  25 logger = logging.getLogger(__name__)
  26
  27
  28 class GrantVnfs(object):
  29     def __init__(self, data, job_id):
  30         self.job_id = job_id
  31         self.vnfm_inst_id = ''
  32         self.vnf_uuid = ''
  33         self.vnfm_job_id = ''
  34         self.data = data
  35
  36     def send_grant_vnf_to_resMgr(self):
  37         logger.debug("grant data from vnfm:%s", self.data)
  38         if isinstance(self.data, str):
  39             self.data = json.JSONDecoder().decode(self.data)
  40         has_res_tpl = False
  41         grant_type = None
  42         if ignore_case_get(self.data, "addResource"):
  43             grant_type = "addResource"
  44         elif ignore_case_get(self.data, "removeResource"):
  45             grant_type = "removeResource"
  46         else:
  47             has_res_tpl = True
  48
  49         for res in ignore_case_get(self.data, grant_type):
  50             if "resourceTemplate" in res:
  51                 has_res_tpl = True
  52                 break
  53
  54         if not has_res_tpl:
  55             m_vnf_inst_id = ignore_case_get(self.data, "vnfInstanceId")
  56             additional_param = ignore_case_get(self.data, "additionalparam")
  57             vnfm_inst_id = ignore_case_get(additional_param, "vnfmid")
  58             vim_id = ignore_case_get(additional_param, "vimid")
  59
  60             vnfinsts = NfInstModel.objects.filter(
  61                 mnfinstid=m_vnf_inst_id, vnfm_inst_id=vnfm_inst_id)
  62             if not vnfinsts:
  63                 raise NSLCMException("Vnfinst(%s) is not found in vnfm(%s)" % (
  64                     m_vnf_inst_id, vnfm_inst_id))
  65
  66             vnf_pkg_id = vnfinsts[0].package_id
  67             nfpackage_info = query_vnfpackage_by_id(vnf_pkg_id)
  68             vnf_pkg = nfpackage_info["packageInfo"]
  69
  70             vnfd = json.JSONDecoder().decode(vnf_pkg["vnfdModel"])
  71
  72             req_param = {
  73                 "vnfInstanceId": m_vnf_inst_id,
  74                 "vimId": vim_id,
  75                 "additionalParam": additional_param,
  76                 grant_type: []
  77             }
  78             for res in ignore_case_get(self.data, grant_type):
  79                 vdu_name = ignore_case_get(res, "vdu")
  80                 grant_res = {
  81                     "resourceDefinitionId": ignore_case_get(res, "resourceDefinitionId"),
  82                     "type": ignore_case_get(res, "type"),
  83                     "vdu": vdu_name
  84                 }
  85                 for vdu in vnfd["vdus"]:
  86                     if vdu_name in (vdu["vdu_id"], vdu["properties"].get("name", "")):
  87                         grant_res["resourceTemplate"] = self.get_res_tpl(vdu, vnfd)
  88                         break
  89                 req_param[grant_type].append(grant_res)
  90             self.data = req_param
  91         return resmgr.grant_vnf(self.data)
  92
  93     def get_res_tpl(self, vdu, vnfd):
  94         storage_size = 0
  95         for storage_id in vdu["local_storages"]:
  96             storage_size = storage_size + self.get_storage_size(storage_id, vnfd)
  97         resourceTemplate = {
  98             "virtualComputeDescriptor": {
  99                 "virtualCpu": {
 100                     "numVirtualCpu": int(vdu["virtual_compute"]["virtual_cpu"]["num_virtual_cpu"])
 101                 },
 102                 "virtualMemory": {
 103                     "virtualMemSize": parse_unit(vdu["virtual_compute"]["virtual_memory"]["virtual_mem_size"], "MB")
 104                 }
 105             },
 106             "virtualStorageDescriptor": {
 107                 "typeOfStorage": "",
 108                 "sizeOfStorage": storage_size,
 109                 "swImageDescriptor": ""
 110             }
 111         }
 112         return resourceTemplate
 113
 114     def get_storage_size(self, storage_id, vnfd):
 115         for storage in vnfd["local_storages"]:
 116             if storage_id == storage["local_storage_id"]:
 117                 return parse_unit(storage["properties"]["size"], "GB")
 118         return 0
 119
 120
 121 def parse_unit(val, base_unit):
 122     # recognized_units = ["B", "kB", "KiB", "MB", "MiB", "GB", "GiB", "TB", "TiB"]
 123     # units_rate = [1, 1000, 1024, 1000000, 1048576, 1000000000, 1073741824, 1000000000000, 1099511627776]
 124     # unit_rate_map = {unit.upper(): rate for unit, rate in zip(recognized_units, units_rate)}
 125     num_unit = val.strip().split(" ")
 126     if len(num_unit) != 2:
 127         return val.strip()
 128     num, unit = num_unit[0], num_unit[1]
 129     return int(num) * SCALAR_UNIT_DICT[unit.upper()] / SCALAR_UNIT_DICT[base_unit.upper()]