sfa/managers/aggregate_manager_pl.py

   1 ### $Id: slices.py 15842 2009-11-22 09:56:13Z anil $
   2 ### $URL: https://svn.planet-lab.org/svn/sfa/trunk/sfa/plc/slices.py $
   3
   4 import datetime
   5 import time
   6 import traceback
   7 import sys
   8
   9 from types import StringTypes
  10 from sfa.util.namespace import *
  11 from sfa.util.rspec import *
  12 from sfa.util.specdict import *
  13 from sfa.util.faults import *
  14 from sfa.util.record import SfaRecord
  15 from sfa.util.policy import Policy
  16 from sfa.util.record import *
  17 from sfa.util.sfaticket import SfaTicket
  18 from sfa.util.debug import log
  19 from sfa.plc.slices import Slices
  20 from sfa.trust.credential import Credential
  21 import sfa.plc.peers as peers
  22 from sfa.plc.network import *
  23 from sfa.plc.api import SfaAPI
  24 from sfa.plc.slices import *
  25
  26
  27 def __get_registry_objects(slice_xrn, creds, users):
  28     """
  29
  30     """
  31     hrn, type = urn_to_hrn(slice_xrn)
  32
  33     hrn_auth = get_authority(hrn)
  34
  35     # Build up objects that an SFA registry would return if SFA
  36     # could contact the slice's registry directly
  37     reg_objects = None
  38
  39     if users:
  40         reg_objects = {}
  41
  42         site = {}
  43         site['site_id'] = 0
  44         site['name'] = 'geni.%s' % hrn_auth[:20]
  45         site['enabled'] = True
  46         site['max_slices'] = 100
  47
  48         # Note:
  49         # Is it okay if this login base is the same as one already at this myplc site?
  50         # Do we need uniqueness?  Should use hrn_auth instead of just the leaf perhaps?
  51         site['login_base'] = hrn_auth[:20]
  52         site['abbreviated_name'] = hrn_auth[:20]
  53         site['max_slivers'] = 1000
  54         reg_objects['site'] = site
  55
  56         slice = {}
  57         slice['expires'] = int(time.mktime(Credential(string=creds[0]).get_lifetime().timetuple()))
  58         slice['hrn'] = hrn
  59         slice['name'] = site['login_base'] + "_" +  get_leaf(hrn)
  60         slice['url'] = hrn
  61         slice['description'] = hrn
  62         slice['pointer'] = 0
  63         reg_objects['slice_record'] = slice
  64
  65         reg_objects['users'] = {}
  66         for user in users:
  67             user['key_ids'] = []
  68             hrn, _ = urn_to_hrn(user['urn'])
  69             user['email'] = hrn + "@geni.net"
  70             user['first_name'] = hrn
  71             user['last_name'] = hrn
  72             reg_objects['users'][user['email']] = user
  73
  74         return reg_objects
  75
  76 def __get_hostnames(nodes):
  77     hostnames = []
  78     for node in nodes:
  79         hostnames.append(node.hostname)
  80     return hostnames
  81
  82 def get_version():
  83     version = {}
  84     version['geni_api'] = 1
  85     version['sfa'] = 1
  86     return version
  87
  88 def slice_status(api, slice_xrn, creds):
  89     result = {}
  90     result['geni_urn'] = slice_xrn
  91     result['geni_status'] = 'unknown'
  92     result['geni_resources'] = {}
  93     return result
  94
  95 def create_slice(api, slice_xrn, creds, rspec, users):
  96     """
  97     Create the sliver[s] (slice) at this aggregate.
  98     Verify HRN and initialize the slice record in PLC if necessary.
  99     """
 100
 101     reg_objects = __get_registry_objects(slice_xrn, creds, users)
 102
 103     hrn, type = urn_to_hrn(slice_xrn)
 104     peer = None
 105     slices = Slices(api)
 106     peer = slices.get_peer(hrn)
 107     sfa_peer = slices.get_sfa_peer(hrn)
 108     registry = api.registries[api.hrn]
 109     credential = api.getCredential()
 110     site_id, remote_site_id = slices.verify_site(registry, credential, hrn,
 111                                                  peer, sfa_peer, reg_objects)
 112
 113     slice_record = slices.verify_slice(registry, credential, hrn, site_id,
 114                                 remote_site_id, peer, sfa_peer, reg_objects)
 115
 116     network = Network(api)
 117
 118     slice = network.get_slice(api, hrn)
 119     slice.peer_id = slice_record['peer_slice_id']
 120     current = __get_hostnames(slice.get_nodes())
 121
 122     network.addRSpec(rspec, api.config.SFA_AGGREGATE_RSPEC_SCHEMA)
 123     request = __get_hostnames(network.nodesWithSlivers())
 124
 125     # remove nodes not in rspec
 126     deleted_nodes = list(set(current).difference(request))
 127
 128     # add nodes from rspec
 129     added_nodes = list(set(request).difference(current))
 130
 131     try:
 132         if peer:
 133             api.plshell.UnBindObjectFromPeer(api.plauth, 'slice', slice.id, peer)
 134
 135         api.plshell.AddSliceToNodes(api.plauth, slice.name, added_nodes)
 136         api.plshell.DeleteSliceFromNodes(api.plauth, slice.name, deleted_nodes)
 137
 138         network.updateSliceTags()
 139
 140     finally:
 141         if peer:
 142             api.plshell.BindObjectToPeer(api.plauth, 'slice', slice.id, peer,
 143                                          slice.peer_id)
 144
 145     # print network.toxml()
 146
 147     return True
 148
 149
 150 def renew_slice(api, xrn, creds, exipration_time):
 151     hrn, type = urn_to_hrn(xrn)
 152     slicename = hrn_to_pl_slicename(hrn)
 153     slices = api.plshell.GetSlices(api.plauth, {'name': slicename}, ['slice_id'])
 154     if not slices:
 155         raise RecordNotFound(hrn)
 156     slice = slices[0]
 157     slice['expires'] = expiration_time
 158     api.plshell.UpdateSlice(api.plauth, slice['slice_id'], slice)
 159     return 1
 160
 161 def start_slice(api, xrn, creds):
 162     hrn, type = urn_to_hrn(xrn)
 163     slicename = hrn_to_pl_slicename(hrn)
 164     slices = api.plshell.GetSlices(api.plauth, {'name': slicename}, ['slice_id'])
 165     if not slices:
 166         raise RecordNotFound(hrn)
 167     slice_id = slices[0]['slice_id']
 168     slice_tags = api.plshell.GetSliceTags(api.plauth, {'slice_id': slice_id, 'tagname': 'enabled'}, ['slice_tag_id'])
 169     # just remove the tag if it exists
 170     if slice_tags:
 171         api.plshell.DeleteSliceTag(api.plauth, slice_tags[0]['slice_tag_id'])
 172
 173     return 1
 174
 175 def stop_slice(api, xrn, creds):
 176     hrn, type = urn_to_hrn(xrn)
 177     slicename = hrn_to_pl_slicename(hrn)
 178     slices = api.plshell.GetSlices(api.plauth, {'name': slicename}, ['slice_id'])
 179     if not slices:
 180         raise RecordNotFound(hrn)
 181     slice_id = slices[0]['slice_id']
 182     slice_tags = api.plshell.GetSliceTags(api.plauth, {'slice_id': slice_id, 'tagname': 'enabled'})
 183     if not slice_tags:
 184         api.plshell.AddSliceTag(api.plauth, slice_id, 'enabled', '0')
 185     elif slice_tags[0]['value'] != "0":
 186         tag_id = attributes[0]['slice_tag_id']
 187         api.plshell.UpdateSliceTag(api.plauth, tag_id, '0')
 188     return 1
 189
 190 def reset_slice(api, xrn):
 191     # XX not implemented at this interface
 192     return 1
 193
 194 def delete_slice(api, xrn, creds):
 195     hrn, type = urn_to_hrn(xrn)
 196     slicename = hrn_to_pl_slicename(hrn)
 197     slices = api.plshell.GetSlices(api.plauth, {'name': slicename})
 198     if not slices:
 199         return 1
 200     slice = slices[0]
 201
 202     # determine if this is a peer slice
 203     peer = peers.get_peer(api, hrn)
 204     try:
 205         if peer:
 206             api.plshell.UnBindObjectFromPeer(api.plauth, 'slice', slice['slice_id'], peer)
 207         api.plshell.DeleteSliceFromNodes(api.plauth, slicename, slice['node_ids'])
 208     finally:
 209         if peer:
 210             api.plshell.BindObjectToPeer(api.plauth, 'slice', slice['slice_id'], peer, slice['peer_slice_id'])
 211     return 1
 212
 213 def get_slices(api, creds):
 214     # look in cache first
 215     if api.cache:
 216         slices = api.cache.get('slices')
 217         if slices:
 218             return slices
 219
 220     # get data from db
 221     slices = api.plshell.GetSlices(api.plauth, {'peer_id': None}, ['name'])
 222     slice_hrns = [slicename_to_hrn(api.hrn, slice['name']) for slice in slices]
 223     slice_urns = [hrn_to_urn(slice_hrn, 'slice') for slice_hrn in slice_hrns]
 224
 225     # cache the result
 226     if api.cache:
 227         api.cache.add('slices', slice_urns)
 228
 229     return slice_urns
 230
 231 def get_rspec(api, creds, options):
 232     # get slice's hrn from options
 233     xrn = options.get('geni_slice_urn', None)
 234     hrn, type = urn_to_hrn(xrn)
 235
 236     # look in cache first
 237     if api.cache and not xrn:
 238         rspec = api.cache.get('nodes')
 239         if rspec:
 240             return rspec
 241
 242     network = Network(api)
 243     if (hrn):
 244         if network.get_slice(api, hrn):
 245             network.addSlice()
 246
 247     rspec = network.toxml()
 248
 249     # cache the result
 250     if api.cache and not xrn:
 251         api.cache.add('nodes', rspec)
 252
 253     return rspec
 254
 255
 256 def get_ticket(api, xrn, creds, rspec, users):
 257
 258     reg_objects = __get_registry_objects(xrn, creds, users)
 259
 260     slice_hrn, type = urn_to_hrn(xrn)
 261     slices = Slices(api)
 262     peer = slices.get_peer(slice_hrn)
 263     sfa_peer = slices.get_sfa_peer(slice_hrn)
 264
 265     # get the slice record
 266     registry = api.registries[api.hrn]
 267     credential = api.getCredential()
 268     records = registry.Resolve(xrn, credential)
 269
 270     # similar to create_slice, we must verify that the required records exist
 271     # at this aggregate before we can issue a ticket
 272     site_id, remote_site_id = slices.verify_site(registry, credential, slice_hrn,
 273                                                  peer, sfa_peer, reg_objects)
 274     slice = slices.verify_slice(registry, credential, slice_hrn, site_id,
 275                                 remote_site_id, peer, sfa_peer, reg_objects)
 276
 277     # make sure we get a local slice record
 278     record = None
 279     for tmp_record in records:
 280         if tmp_record['type'] == 'slice' and \
 281            not tmp_record['peer_authority']:
 282             record = SliceRecord(dict=tmp_record)
 283     if not record:
 284         raise RecordNotFound(slice_hrn)
 285
 286     # get sliver info
 287     slivers = Slices(api).get_slivers(slice_hrn)
 288     if not slivers:
 289         raise SliverDoesNotExist(slice_hrn)
 290
 291     # get initscripts
 292     initscripts = []
 293     data = {
 294         'timestamp': int(time.time()),
 295         'initscripts': initscripts,
 296         'slivers': slivers
 297     }
 298
 299     # create the ticket
 300     object_gid = record.get_gid_object()
 301     new_ticket = SfaTicket(subject = object_gid.get_subject())
 302     new_ticket.set_gid_caller(api.auth.client_gid)
 303     new_ticket.set_gid_object(object_gid)
 304     new_ticket.set_issuer(key=api.key, subject=api.hrn)
 305     new_ticket.set_pubkey(object_gid.get_pubkey())
 306     new_ticket.set_attributes(data)
 307     new_ticket.set_rspec(rspec)
 308     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 309     new_ticket.encode()
 310     new_ticket.sign()
 311
 312     return new_ticket.save_to_string(save_parents=True)
 313
 314
 315
 316 def main():
 317     api = SfaAPI()
 318     """
 319     rspec = get_rspec(api, "plc.princeton.sapan", None)
 320     #rspec = get_rspec(api, "plc.princeton.coblitz", None)
 321     #rspec = get_rspec(api, "plc.pl.sirius", None)
 322     print rspec
 323     """
 324     f = open(sys.argv[1])
 325     xml = f.read()
 326     f.close()
 327     create_slice(api, "plc.princeton.sapan", xml)
 328
 329 if __name__ == "__main__":
 330     main()