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 #from sfa.rspecs.rspec_version import RSpecVersion
   7 from sfa.rspecs.rspec import RSpec
   8 from sfa.rspecs.version_manager import VersionManager
   9 from sfa.plc.vlink import get_tc_rate
  10
  11 class Aggregate:
  12
  13     api = None
  14     sites = {}
  15     nodes = {}
  16     interfaces = {}
  17     links = {}
  18     node_tags = {}
  19     pl_initscripts = {}
  20     prepared=False
  21     #panos new user options variable
  22     user_options = {}
  23
  24     def __init__(self, api, user_options={}):
  25         self.api = api
  26         self.user_options = user_options
  27
  28     def prepare_sites(self, force=False):
  29         if not self.sites or force:
  30             for site in self.api.plshell.GetSites(self.api.plauth):
  31                 self.sites[site['site_id']] = site
  32
  33     def prepare_nodes(self, force=False):
  34         if not self.nodes or force:
  35             for node in self.api.plshell.GetNodes(self.api.plauth, {'peer_id': None}):
  36                 # add site/interface info to nodes.
  37                 # assumes that sites, interfaces and tags have already been prepared.
  38                 site = self.sites[node['site_id']]
  39                 interfaces = [self.interfaces[interface_id] for interface_id in node['interface_ids']]
  40                 tags = [self.node_tags[tag_id] for tag_id in node['node_tag_ids']]
  41                 node['network'] = self.api.hrn
  42                 node['network_urn'] = hrn_to_urn(self.api.hrn, 'authority+am')
  43                 node['urn'] = hostname_to_urn(self.api.hrn, site['login_base'], node['hostname'])
  44                 node['site_urn'] = hrn_to_urn(PlXrn.site_hrn(self.api.hrn, site['login_base']), 'authority+sa')
  45                 node['site'] = site
  46                 node['interfaces'] = interfaces
  47                 node['tags'] = tags
  48                 self.nodes[node['node_id']] = node
  49
  50     def prepare_interfaces(self, force=False):
  51         if not self.interfaces or force:
  52             for interface in self.api.plshell.GetInterfaces(self.api.plauth):
  53                 self.interfaces[interface['interface_id']] = interface
  54
  55     def prepare_links(self, force=False):
  56         if not self.links or force:
  57             pass
  58
  59     def prepare_node_tags(self, force=False):
  60         if not self.node_tags or force:
  61             for node_tag in self.api.plshell.GetNodeTags(self.api.plauth):
  62                 self.node_tags[node_tag['node_tag_id']] = node_tag
  63
  64     def prepare_pl_initscripts(self, force=False):
  65         if not self.pl_initscripts or force:
  66             for initscript in self.api.plshell.GetInitScripts(self.api.plauth, {'enabled': True}):
  67                 self.pl_initscripts[initscript['initscript_id']] = initscript
  68
  69     def prepare(self, force=False):
  70         if not self.prepared or force:
  71             self.prepare_sites(force)
  72             self.prepare_interfaces(force)
  73             self.prepare_node_tags(force)
  74             self.prepare_nodes(force)
  75             self.prepare_links(force)
  76             self.prepare_pl_initscripts()
  77         self.prepared = True
  78
  79     def get_rspec(self, slice_xrn=None, version = None):
  80         self.prepare()
  81         version_manager = VersionManager()
  82         version = version_manager.get_version(version)
  83         if not slice_xrn:
  84             rspec_version = version_manager._get_version(version.type, version.version, 'ad')
  85         else:
  86             rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
  87
  88         rspec = RSpec(version=rspec_version, user_options=self.user_options)
  89         # get slice details if specified
  90         slice = None
  91         if slice_xrn:
  92             slice_hrn, _ = urn_to_hrn(slice_xrn)
  93             slice_name = hrn_to_pl_slicename(slice_hrn)
  94             slices = self.api.plshell.GetSlices(self.api.plauth, slice_name)
  95             if slices:
  96                 slice = slices[0]
  97
  98         # filter out nodes with a whitelist:
  99         valid_nodes = []
 100         for node in self.nodes.values():
 101             # only doing this because protogeni rspec needs
 102             # to advertise available initscripts
 103             node['pl_initscripts'] = self.pl_initscripts
 104
 105             if slice and node['node_id'] in slice['node_ids']:
 106                 valid_nodes.append(node)
 107             elif slice and slice['slice_id'] in node['slice_ids_whitelist']:
 108                 valid_nodes.append(node)
 109             elif not slice and not node['slice_ids_whitelist']:
 110                 valid_nodes.append(node)
 111
 112         rspec.version.add_nodes(valid_nodes)
 113         rspec.version.add_interfaces(self.interfaces.values())
 114         rspec.version.add_links(self.links.values())
 115
 116         # add slivers
 117         if slice_xrn and slice:
 118             slivers = []
 119             tags = self.api.plshell.GetSliceTags(self.api.plauth, slice['slice_tag_ids'])
 120
 121             # add default tags
 122             for tag in tags:
 123                 # if tag isn't bound to a node then it applies to all slivers
 124                 # and belongs in the <sliver_defaults> tag
 125                 if not tag['node_id']:
 126                     rspec.version.add_default_sliver_attribute(tag['tagname'], tag['value'], self.api.hrn)
 127                 if tag['tagname'] == 'topo_rspec' and tag['node_id']:
 128                     node = self.nodes[tag['node_id']]
 129                     value = eval(tag['value'])
 130                     for (id, realip, bw, lvip, rvip, vnet) in value:
 131                         bps = get_tc_rate(bw)
 132                         remote = self.nodes[id]
 133                         site1 = self.sites[node['site_id']]
 134                         site2 = self.sites[remote['site_id']]
 135                         link1_name = '%s:%s' % (site1['login_base'], site2['login_base'])
 136                         link2_name = '%s:%s' % (site2['login_base'], site1['login_base'])
 137                         p_link = None
 138                         if link1_name in self.links:
 139                             link = self.links[link1_name]
 140                         elif link2_name in self.links:
 141                             link = self.links[link2_name]
 142                         v_link = Link()
 143
 144                         link.capacity = bps
 145             for node_id in slice['node_ids']:
 146                 try:
 147                     sliver = {}
 148                     sliver['hostname'] = self.nodes[node_id]['hostname']
 149                     sliver['node_id'] = node_id
 150                     sliver['slice_id'] = slice['slice_id']
 151                     sliver['tags'] = []
 152                     slivers.append(sliver)
 153
 154                     # add tags for this node only
 155                     for tag in tags:
 156                         if tag['node_id'] and (tag['node_id'] == node_id):
 157                             sliver['tags'].append(tag)
 158                 except:
 159                     self.api.logger.log_exc('unable to add sliver %s to node %s' % (slice['name'], node_id))
 160             rspec.version.add_slivers(slivers, sliver_urn=slice_xrn)
 161
 162         return rspec.toxml()