| |
| # Copyright 2017-present Open Networking Foundation |
| # |
| # 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 os |
| import sys |
| |
| from core.models import Slice,Instance,User,Flavor,Node,Image |
| |
| class XOSNodeSelector(object): |
| def __init__(self, user, mem_size=None, num_cpus=None, disk_size=None, hostname = None): |
| self.user = user |
| self.hostname = None |
| |
| def get_allowed_nodes(self): |
| # TODO: logic to get nodes that the user can use |
| nodes = Node.objects.all() |
| |
| if self.hostname: |
| nodes = nodes.filter(name = self.hostname) |
| |
| return nodes |
| |
| def get_nodes(self, quantity): |
| nodes = self.get_allowed_nodes() |
| # TODO: filter out any nonfunctional nodes |
| # sort by fewest number of instances |
| nodes = sorted(nodes, key=lambda node: node.instances.all().count()) |
| return nodes[:quantity] |
| |