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.elements.link import Link
   6 from sfa.rspecs.elements.interface import Interface
   7 from sfa.managers.vini.topology import PhysicalLinks
   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, filter={}, force=False):
  29         if not self.sites or force:
  30             for site in self.api.plshell.GetSites(self.api.plauth, filter):
  31                 self.sites[site['site_id']] = site
  32
  33     def prepare_nodes(self, filter={}, force=False):
  34         if not self.nodes or force:
  35             filter.update({'peer_id': None})
  36             for node in self.api.plshell.GetNodes(self.api.plauth, filter):
  37                 # add site/interface info to nodes.
  38                 # assumes that sites, interfaces and tags have already been prepared.
  39                 site = self.sites[node['site_id']]
  40                 interfaces = [self.interfaces[interface_id] for interface_id in node['interface_ids']]
  41                 tags = [self.node_tags[tag_id] for tag_id in node['node_tag_ids']]
  42                 node['network'] = self.api.hrn
  43                 node['network_urn'] = hrn_to_urn(self.api.hrn, 'authority+am')
  44                 node['urn'] = hostname_to_urn(self.api.hrn, site['login_base'], node['hostname'])
  45                 node['site_urn'] = hrn_to_urn(PlXrn.site_hrn(self.api.hrn, site['login_base']), 'authority+sa')
  46                 node['site'] = site
  47                 node['interfaces'] = interfaces
  48                 node['tags'] = tags
  49                 self.nodes[node['node_id']] = node
  50
  51     def prepare_interfaces(self, filter={}, force=False):
  52         if not self.interfaces or force:
  53             for interface in self.api.plshell.GetInterfaces(self.api.plauth, filter):
  54                 self.interfaces[interface['interface_id']] = interface
  55
  56     def prepare_links(self, filter={}, force=False):
  57         if not self.links or force:
  58             if not self.api.config.SFA_AGGREGATE_TYPE.lower() == 'vini':
  59                 return
  60
  61             for (site_id1, site_id2) in PhysicalLinks:
  62                 link = Link()
  63                 if not site_id1 in self.sites or site_id2 not in self.sites:
  64                     continue
  65                 site1 = self.sites[site_id1]
  66                 site2 = self.sites[site_id2]
  67                 # get hrns
  68                 site1_hrn = self.api.hrn + '.' + site1['login_base']
  69                 site2_hrn = self.api.hrn + '.' + site2['login_base']
  70                 # get the first node
  71                 node1 = self.nodes[site1['node_ids'][0]]
  72                 node2 = self.nodes[site2['node_ids'][0]]
  73
  74                 # set interfaces
  75                 # just get first interface of the first node
  76                 if1_xrn = PlXrn(auth=self.api.hrn, interface='node%s:eth0' % (node1['node_id']))
  77                 if1_ipv4 = self.interfaces[node1['interface_ids'][0]]['ip']
  78                 if2_xrn = PlXrn(auth=self.api.hrn, interface='node%s:eth0' % (node2['node_id']))
  79                 if2_ipv4 = self.interfaces[node2['interface_ids'][0]]['ip']
  80
  81                 if1 = Interface({'component_id': if1_xrn.urn, 'ipv4': if1_ipv4} )
  82                 if2 = Interface({'component_id': if2_xrn.urn, 'ipv4': if2_ipv4} )
  83
  84                 # set link
  85                 link = Link({'capacity': '1000000', 'latency': '0', 'packet_loss': '0', 'type': 'ipv4'})
  86                 link['interface1'] = if1
  87                 link['interface2'] = if2
  88                 link['component_name'] = "%s:%s" % (site1['login_base'], site2['login_base'])
  89                 link['component_id'] = PlXrn(auth=self.api.hrn, interface=link['component_name']).get_urn()
  90                 link['component_manager_id'] =  hrn_to_urn(self.api.hrn, 'authority+am')
  91                 self.links[link['component_name']] = link
  92
  93
  94     def prepare_node_tags(self, filter={}, force=False):
  95         if not self.node_tags or force:
  96             for node_tag in self.api.plshell.GetNodeTags(self.api.plauth, filter):
  97                 self.node_tags[node_tag['node_tag_id']] = node_tag
  98
  99     def prepare_pl_initscripts(self, filter={}, force=False):
 100         if not self.pl_initscripts or force:
 101             filter.update({'enabled': True})
 102             for initscript in self.api.plshell.GetInitScripts(self.api.plauth, filter):
 103                 self.pl_initscripts[initscript['initscript_id']] = initscript
 104
 105     def prepare(self, slice = None, force=False):
 106         if not self.prepared or force or slice:
 107             if not slice:
 108                 self.prepare_sites(force=force)
 109                 self.prepare_interfaces(force=force)
 110                 self.prepare_node_tags(force=force)
 111                 self.prepare_nodes(force=force)
 112                 self.prepare_links(force=force)
 113                 self.prepare_pl_initscripts(force=force)
 114             else:
 115                 self.prepare_sites({'site_id': slice['site_id']})
 116                 self.prepare_interfaces({'node_id': slice['node_ids']})
 117                 self.prepare_node_tags({'node_id': slice['node_ids']})
 118                 self.prepare_nodes({'node_id': slice['node_ids']})
 119                 self.prepare_links({'slice_id': slice['slice_id']})
 120                 self.prepare_pl_initscripts({'slice_id': slice['slice_id']})
 121             self.prepared = True
 122
 123     def get_rspec(self, slice_xrn=None, version = None):
 124         version_manager = VersionManager()
 125         version = version_manager.get_version(version)
 126         if not slice_xrn:
 127             rspec_version = version_manager._get_version(version.type, version.version, 'ad')
 128         else:
 129             rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
 130
 131         rspec = RSpec(version=rspec_version, user_options=self.user_options)
 132         # get slice details if specified
 133         slice = None
 134         if slice_xrn:
 135             slice_hrn, _ = urn_to_hrn(slice_xrn)
 136             slice_name = hrn_to_pl_slicename(slice_hrn)
 137             slices = self.api.plshell.GetSlices(self.api.plauth, slice_name)
 138             if slices:
 139                 slice = slices[0]
 140             self.prepare(slice=slice)
 141         else:
 142             self.prepare()
 143
 144         # filter out nodes with a whitelist:
 145         valid_nodes = []
 146         for node in self.nodes.values():
 147             # only doing this because protogeni rspec needs
 148             # to advertise available initscripts
 149             node['pl_initscripts'] = self.pl_initscripts
 150
 151             if slice and node['node_id'] in slice['node_ids']:
 152                 valid_nodes.append(node)
 153             elif slice and slice['slice_id'] in node['slice_ids_whitelist']:
 154                 valid_nodes.append(node)
 155             elif not slice and not node['slice_ids_whitelist']:
 156                 valid_nodes.append(node)
 157
 158         rspec.version.add_nodes(valid_nodes)
 159         rspec.version.add_interfaces(self.interfaces.values())
 160         rspec.version.add_links(self.links.values())
 161
 162         # add slivers
 163         if slice_xrn and slice:
 164             slivers = []
 165             tags = self.api.plshell.GetSliceTags(self.api.plauth, slice['slice_tag_ids'])
 166
 167             # add default tags
 168             for tag in tags:
 169                 # if tag isn't bound to a node then it applies to all slivers
 170                 # and belongs in the <sliver_defaults> tag
 171                 if not tag['node_id']:
 172                     rspec.version.add_default_sliver_attribute(tag['tagname'], tag['value'], self.api.hrn)
 173                 if tag['tagname'] == 'topo_rspec' and tag['node_id']:
 174                     node = self.nodes[tag['node_id']]
 175                     value = eval(tag['value'])
 176                     for (id, realip, bw, lvip, rvip, vnet) in value:
 177                         bps = get_tc_rate(bw)
 178                         remote = self.nodes[id]
 179                         site1 = self.sites[node['site_id']]
 180                         site2 = self.sites[remote['site_id']]
 181                         link1_name = '%s:%s' % (site1['login_base'], site2['login_base'])
 182                         link2_name = '%s:%s' % (site2['login_base'], site1['login_base'])
 183                         p_link = None
 184                         if link1_name in self.links:
 185                             link = self.links[link1_name]
 186                         elif link2_name in self.links:
 187                             link = self.links[link2_name]
 188                         v_link = Link()
 189
 190                         link.capacity = bps
 191             for node_id in slice['node_ids']:
 192                 try:
 193                     sliver = {}
 194                     sliver['hostname'] = self.nodes[node_id]['hostname']
 195                     sliver['node_id'] = node_id
 196                     sliver['slice_id'] = slice['slice_id']
 197                     sliver['tags'] = []
 198                     slivers.append(sliver)
 199
 200                     # add tags for this node only
 201                     for tag in tags:
 202                         if tag['node_id'] and (tag['node_id'] == node_id):
 203                             sliver['tags'].append(tag)
 204                 except:
 205                     self.api.logger.log_exc('unable to add sliver %s to node %s' % (slice['name'], node_id))
 206             rspec.version.add_slivers(slivers, sliver_urn=slice_xrn)
 207
 208         return rspec.toxml()