import asyncio
import logging
-# import platform
+import itertools
from pathlib import Path
-# import pkg_resources
import yaml
from osm_common import dbmemory, dbmongo, msglocal, msgkafka
nslcmop = self.db.get_one("nslcmops", db_filter)
return nslcmop
+ def _get_projects(self):
+ """
+ :return: project name to project id mapping
+ """
+ projects = self.db.get_list("projects")
+ return {project['_id']: project['name'] for project in projects}
+
def _get_nsd(self, nsd_id):
"""
:param nsd_id:
db_filter = {"_id": vim_account_ids}
return self.db.get_list("vim_accounts", db_filter)
- def _get_vnf_price_list(self, price_list_file_path):
+ def _read_vnf_price_list(self, price_list_file_path):
+ """
+ read vnf price list configuration file
+ :param price_list_file_path:
+ :return:
+ """
+ with open(str(price_list_file_path)) as pl_fd:
+ price_list = yaml.safe_load_all(pl_fd)
+ return next(price_list)
+
+ def _price_list_with_project(self, price_list):
+ """
+ Figure out if this price list is with project or not.
+ Note: to handle the unlikely event that a project is called 'prices' we do not simply check if 'prices'
+ is in the dict keys for a price list sequence but rather go down one step in the nesting
+ in which we either have
+ 1) 'prices:{vim_url:...}' if prices are also per project, or
+ 2) '{vim_url:...}' if prices are only per vim
+
+ :param price_list:
+ :return: True if project part of price list, else False
+ """
+ price_list_entry_keys = set(price_list[0].keys())
+ price_list_entry_keys.remove('vnfd')
+ pl_key = price_list_entry_keys.pop()
+ entry_to_check = price_list[0][pl_key][0].keys()
+ return True if 'prices' in entry_to_check else False
+
+ def _get_vnf_price_list(self, price_list_file_path, project_name=None):
"""
- read vnf price list configuration file and reformat its content
+ read vnf price list configuration file, determine its type and reformat content accordingly
- :param: price_list_file: Path to price list file
+ :param price_list_file_path:
+ :param project_name:
:return: dictionary formatted as {'<vnfd>': {'<vim-url>':'<price>'}}
"""
- with open(str(price_list_file_path)) as pl_fd:
- price_list_data = yaml.safe_load_all(pl_fd)
- return {i['vnfd']: {i1['vim_url']: i1['price'] for i1 in i['prices']} for i in next(price_list_data)}
+ price_list_data = self._read_vnf_price_list(price_list_file_path)
+ if self._price_list_with_project(price_list_data):
+ res = {}
+ for i in price_list_data:
+ price_data = i[project_name] if type(i[project_name]) is dict else i[project_name][0]
+ res_component = {i['vim_name']: i['price'] for i in price_data['prices']}
+ res.update({i['vnfd']: res_component})
+ return res
+ else:
+ return {i['vnfd']: {i1['vim_name']: i1['price'] for i1 in i['prices']} for i in price_list_data}
def _get_pil_info(self, pil_info_file_path):
"""
data = yaml.safe_load_all(pil_fd)
return next(data)
+ def _create_vnf_id_maps(self, nsd):
+ """
+ map identifier for 'member-vnf-index' in nsd to syntax that is safe for mzn
+
+ return tuples with mappings {<adjusted id>: <original id>} and {<original id>: <adjusted id>}
+ """
+ # TODO: Change for multiple DF support
+ ns_df = nsd.get('df', [{}])[0]
+ next_idx = itertools.count()
+ member_vnf_index2mzn = {e['id']: 'VNF' + str(next(next_idx)) for e in
+ ns_df.get('vnf-profile', [])}
+
+ # reverse the name map dictionary, used when the placement result is remapped
+ mzn_name2member_vnf_index = {v: k for k, v in member_vnf_index2mzn.items()}
+
+ return member_vnf_index2mzn, mzn_name2member_vnf_index
+
async def get_placement(self, nslcmop_id):
"""
- Collects and prepares placement information.
try:
nslcmop = self._get_nslcmop(nslcmop_id)
nsd = self._get_nsd(nslcmop['operationParams']['nsdId'])
- self.log.info("nsd: {}".format(nsd))
+ member_vnf_index2mzn, mzn2member_vnf_index = self._create_vnf_id_maps(nsd)
+ # adjust vnf identifiers
+ # TODO: Change for multiple DF support
+ ns_df = nsd.get('df', [{}])[0]
+ for vnf_profile in ns_df.get('vnf-profile', []):
+ vnf_profile['id'] = member_vnf_index2mzn[vnf_profile['id']]
+ for vlc in vnf_profile.get('virtual-link-connectivity', []):
+ for ccpd in vlc.get('constituent-cpd-id', []):
+ ccpd['constituent-base-element-id'] = member_vnf_index2mzn[ccpd['constituent-base-element-id']]
+ self.log.info("adjusted nsd: {}".format(nsd))
+ projects = self._get_projects()
+ self.log.info("projects: {}".format(projects))
+ nslcmop_project = nslcmop['_admin']['projects_read'][0]
+ self.log.info("nslcmop_project: {}".format(nslcmop_project))
valid_vim_accounts = nslcmop['operationParams']['validVimAccounts']
vim_accounts_data = self._get_vim_accounts(valid_vim_accounts)
- vims_information = {_['vim_url']: _['_id'] for _ in vim_accounts_data}
- price_list = self._get_vnf_price_list(Server.vnf_price_list_file)
+ vims_information = {_['name']: _['_id'] for _ in vim_accounts_data}
+ price_list = self._get_vnf_price_list(Server.vnf_price_list_file, projects[nslcmop_project])
pil_info = self._get_pil_info(Server.pil_price_list_file)
- pinning = nslcmop['operationParams'].get('vnf')
- self.log.info("pinning: {}".format(pinning))
+ pinnings = nslcmop['operationParams'].get('vnf', [])
+ # remap member-vnf-index values according to id map
+ for pinning in pinnings:
+ pinning['member-vnf-index'] = member_vnf_index2mzn[pinning['member-vnf-index']]
+ self.log.info("pinnings: {}".format(pinnings))
order_constraints = nslcmop['operationParams'].get('placement-constraints')
self.log.info("order constraints: {}".format(order_constraints))
price_list,
nsd,
pil_info,
- pinning, order_constraints).create_ns_placement_data()
+ pinnings, order_constraints).create_ns_placement_data()
vnf_placement = MznPlacementConductor(self.log).do_placement_computation(nspd)
self.log.exception("PLA fault. Exception: {}".format(e))
vnf_placement = []
finally:
+ # remap names in vnf_placement
+ for e in vnf_placement:
+ e['member-vnf-index'] = mzn2member_vnf_index[e['member-vnf-index']]
await self.msgBus.aiowrite("pla", "placement",
{'placement': {'vnf': vnf_placement, 'nslcmopId': nslcmop_id}})
projects / osm / PLA.git / blobdiff