planetstack/observer/steps/sync_nodes.py

   1 import os
   2 import base64
   3 import random
   4 from datetime import datetime
   5 from django.db.models import F, Q
   6 from planetstack.config import Config
   7 from observer.openstacksyncstep import OpenStackSyncStep
   8 from core.models.node import Node
   9 from core.models.deployment import Deployment
  10 from core.models.site import Site
  11
  12 class SyncNodes(OpenStackSyncStep):
  13     provides=[Node]
  14     requested_interval=0
  15
  16     def fetch_pending(self):
  17         # collect local nodes
  18         sites = Site.objects.all()
  19         nodes = Node.objects.all()
  20         node_hostnames  = [node.name for node in nodes]
  21
  22         # fetch all nodes from each deployment
  23         deployments = Deployment.objects.all()
  24         for deployment in deployments:
  25             driver = self.driver.admin_driver(deployment=deployment.name)
  26             compute_nodes = driver.shell.nova.hypervisors.list()
  27             if compute_node.hypervisor_hostname not in node_hostnames:
  28                 # XX TODO:figure out how to correctly identify a node's site.
  29                 # XX pick a random site to add the node to for now
  30                 site_index = random.randint(0, len(sites))
  31                 node = Node(name=compute_node.hypervisor_hostname,
  32                             site=sites[site_index], deployment=deployment)
  33                 new_nodes.append(node)
  34
  35         return new_nodes
  36
  37
  38     def sync_record(self, node):
  39         node.save()
  40