| 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] |
| |