sfa/plc/aggregate.py

   1 #!/usr/bin/python
   2 from sfa.util.xrn import *
   3 from sfa.util.plxrn import *
   4 from sfa.rspecs.sfa_rspec import SfaRSpec
   5 from sfa.rspecs.pg_rspec  import PGRSpec
   6
   7 class Aggregate:
   8
   9     api = None
  10     sites = {}
  11     nodes = {}
  12     interfaces = {}
  13     links = {}
  14     tag_types = {}
  15     prepared=False
  16
  17     def __init__(self, api):
  18         self.api = api
  19
  20     def prepare_sites(self, force=False):
  21         if not self.sites or force:
  22             for site in self.api.plshell.GetSites(self.api.plauth):
  23                 self.sites[site['site_id']] = site
  24
  25     def prepare_nodes(self, force=False):
  26         if not self.nodes or force:
  27             for node in self.api.plshell.GetNodes(self.api.plauth):
  28                 self.nodes[node['node_id']] = node
  29
  30     def prepare_interfaces(self, force=False):
  31         if not self.interfaces or force:
  32             for interface in self.api.plshell.GetInterfaces(self.api.plauth):
  33                 self.interfaces[interface['interface_id']] = interface
  34
  35     def prepare_links(self, force=False):
  36         if not self.links or force:
  37             pass
  38
  39     def prepare_tagtypes(self, force=False):
  40         if not self.tag_types or force:
  41             for tag_type in self.api.plshell.GetTagTypes(self.api.plauth):
  42                 self.tag_types[tag_type['tag_type_id']] = tag_type
  43
  44     def prepare(self, force=False):
  45         if not self.prepared or force:
  46             self.prepare_sites(force)
  47             self.prepare_nodes(force)
  48             self.prepare_interfaces(force)
  49             self.prepare_links(force)
  50             self.prepare_tagtypes(force)
  51             # add site/interface info to nodes
  52             for node in self.nodes:
  53                 site = self.sites[node['site_id']]
  54                 interfaces = [self.interfaces[interface_id] for interface_id in node['interface_ids']]
  55
  56         self.prepared = True
  57
  58     def get_rspec(self, slice_xrn=None, format='sfa'):
  59         self.prepare()
  60         rspec = None
  61         if format == ['pg']:
  62             rspec = PGRSpec()
  63         else:
  64             rspec = SfaRSpec()
  65
  66         rspec.add_nodes(self.nodes)
  67         rspec.add_interfaces(self.interfaces)
  68         rspec.add_links(self.links)
  69
  70         if slice_xrn:
  71             slice_hrn, _ = urn_to_hrn(slice_xrn)
  72             slice_name = hrn_to_pl_slicename(slice_hrn)
  73             slices = self.api.plshell.GetSlices(self.api.plauth, slice_name)
  74             if slices:
  75                 slice = slices[0]
  76                 hostnames = [self.nodes[node_id]['hostname'] for node_id in slice['node_ids']]
  77                 rspec.add_slivers(hostnames)