planetstack/openstack_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.site import Site, Deployment
  10
  11 class SyncNodes(OpenStackSyncStep):
  12     provides=[Node]
  13     requested_interval=0
  14
  15     def fetch_pending(self, deleted):
  16         # Nodes come from the back end
  17         # You can't delete them
  18         if (deleted):
  19             return []
  20
  21         # collect local nodes
  22         sites = Site.objects.all()
  23         nodes = Node.objects.all()
  24         node_hostnames  = [node.name for node in nodes]
  25
  26         # fetch all nodes from each deployment
  27         deployments = Deployment.objects.all()
  28         new_nodes = []
  29         for deployment in deployments:
  30             driver = self.driver.admin_driver(deployment=deployment.name)
  31             compute_nodes = driver.shell.nova.hypervisors.list()
  32             for compute_node in compute_nodes:
  33                 if compute_node.hypervisor_hostname not in node_hostnames:
  34                     # XX TODO:figure out how to correctly identify a node's site.
  35                     # XX pick a random site to add the node to for now
  36                     site_index = random.randint(0, len(sites))
  37                     node = Node(name=compute_node.hypervisor_hostname,
  38                                 site=sites[site_index], deployment=deployment)
  39                     new_nodes.append(node)
  40
  41         return new_nodes
  42
  43
  44     def sync_record(self, node):
  45         node.save()
  46