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