sfa/plc/aggregate.py

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