sfa/senslab/slabslices.py

   1 from types import StringTypes
   2 from collections import defaultdict
   3 import sys
   4 from sfa.util.xrn import get_leaf, get_authority, urn_to_hrn
   5 from sfa.util.plxrn import hrn_to_pl_slicename
   6 from sfa.util.policy import Policy
   7 from sfa.rspecs.rspec import RSpec
   8 from sfa.plc.vlink import VLink
   9 from sfa.util.xrn import Xrn
  10
  11 MAXINT =  2L**31-1
  12
  13 class SlabSlices:
  14
  15     rspec_to_slice_tag = {'max_rate':'net_max_rate'}
  16
  17     #def __init__(self, api, ttl = .5, origin_hrn=None):
  18         #self.api = api
  19         ##filepath = path + os.sep + filename
  20         #self.policy = Policy(self.api)
  21         #self.origin_hrn = origin_hrn
  22         #self.registry = api.registries[api.hrn]
  23         #self.credential = api.getCredential()
  24         #self.nodes = []
  25         #self.persons = []
  26
  27
  28     def __init__(self, driver):
  29         self.driver = driver
  30     #def get_slivers(self, xrn, node=None):
  31         #hrn, type = urn_to_hrn(xrn)
  32
  33         #slice_name = hrn_to_pl_slicename(hrn)
  34         ## XX Should we just call PLCAPI.GetSliceTicket(slice_name) instead
  35         ## of doing all of this?
  36         ##return self.api.driver.GetSliceTicket(self.auth, slice_name)
  37
  38         ## from PLCAPI.GetSlivers.get_slivers()
  39         #slice_fields = ['slice_id', 'name', 'instantiation', 'expires', 'person_ids', 'slice_tag_ids']
  40         #slices = self.api.driver.GetSlices(slice_name, slice_fields)
  41         ## Build up list of users and slice attributes
  42         #person_ids = set()
  43         #all_slice_tag_ids = set()
  44         #for slice in slices:
  45             #person_ids.update(slice['person_ids'])
  46             #all_slice_tag_ids.update(slice['slice_tag_ids'])
  47         #person_ids = list(person_ids)
  48         #all_slice_tag_ids = list(all_slice_tag_ids)
  49         ## Get user information
  50         #all_persons_list = self.api.driver.GetPersons({'person_id':person_ids,'enabled':True}, ['person_id', 'enabled', 'key_ids'])
  51         #all_persons = {}
  52         #for person in all_persons_list:
  53             #all_persons[person['person_id']] = person
  54
  55         ## Build up list of keys
  56         #key_ids = set()
  57         #for person in all_persons.values():
  58             #key_ids.update(person['key_ids'])
  59         #key_ids = list(key_ids)
  60         ## Get user account keys
  61         #all_keys_list = self.api.driver.GetKeys(key_ids, ['key_id', 'key', 'key_type'])
  62         #all_keys = {}
  63         #for key in all_keys_list:
  64             #all_keys[key['key_id']] = key
  65         ## Get slice attributes
  66         #all_slice_tags_list = self.api.driver.GetSliceTags(all_slice_tag_ids)
  67         #all_slice_tags = {}
  68         #for slice_tag in all_slice_tags_list:
  69             #all_slice_tags[slice_tag['slice_tag_id']] = slice_tag
  70
  71         #slivers = []
  72         #for slice in slices:
  73             #keys = []
  74             #for person_id in slice['person_ids']:
  75                 #if person_id in all_persons:
  76                     #person = all_persons[person_id]
  77                     #if not person['enabled']:
  78                         #continue
  79                     #for key_id in person['key_ids']:
  80                         #if key_id in all_keys:
  81                             #key = all_keys[key_id]
  82                             #keys += [{'key_type': key['key_type'],
  83                                     #'key': key['key']}]
  84             #attributes = []
  85             ## All (per-node and global) attributes for this slice
  86             #slice_tags = []
  87             #for slice_tag_id in slice['slice_tag_ids']:
  88                 #if slice_tag_id in all_slice_tags:
  89                     #slice_tags.append(all_slice_tags[slice_tag_id])
  90             ## Per-node sliver attributes take precedence over global
  91             ## slice attributes, so set them first.
  92             ## Then comes nodegroup slice attributes
  93             ## Followed by global slice attributes
  94             #sliver_attributes = []
  95
  96             #if node is not None:
  97                 #for sliver_attribute in filter(lambda a: a['node_id'] == node['node_id'], slice_tags):
  98                     #sliver_attributes.append(sliver_attribute['tagname'])
  99                     #attributes.append({'tagname': sliver_attribute['tagname'],
 100                                     #'value': sliver_attribute['value']})
 101
 102             ## set nodegroup slice attributes
 103             #for slice_tag in filter(lambda a: a['nodegroup_id'] in node['nodegroup_ids'], slice_tags):
 104                 ## Do not set any nodegroup slice attributes for
 105                 ## which there is at least one sliver attribute
 106                 ## already set.
 107                 #if slice_tag not in slice_tags:
 108                     #attributes.append({'tagname': slice_tag['tagname'],
 109                         #'value': slice_tag['value']})
 110
 111             #for slice_tag in filter(lambda a: a['node_id'] is None, slice_tags):
 112                 ## Do not set any global slice attributes for
 113                 ## which there is at least one sliver attribute
 114                 ## already set.
 115                 #if slice_tag['tagname'] not in sliver_attributes:
 116                     #attributes.append({'tagname': slice_tag['tagname'],
 117                                    #'value': slice_tag['value']})
 118
 119             ## XXX Sanity check; though technically this should be a system invariant
 120             ## checked with an assertion
 121             #if slice['expires'] > MAXINT:  slice['expires']= MAXINT
 122
 123             #slivers.append({
 124                 #'hrn': hrn,
 125                 #'name': slice['name'],
 126                 #'slice_id': slice['slice_id'],
 127                 #'instantiation': slice['instantiation'],
 128                 #'expires': slice['expires'],
 129                 #'keys': keys,
 130                 #'attributes': attributes
 131             #})
 132
 133         #return slivers
 134
 135     def get_peer(self, xrn):
 136         hrn, type = urn_to_hrn(xrn)
 137         # Becaues of myplc federation,  we first need to determine if this
 138         # slice belongs to out local plc or a myplc peer. We will assume it
 139         # is a local site, unless we find out otherwise
 140         peer = None
 141         print>>sys.stderr, " \r\n \r\n \t slices.py get_peer slice_authority  "
 142         # get this slice's authority (site)
 143         slice_authority = get_authority(hrn)
 144
 145         # get this site's authority (sfa root authority or sub authority)
 146         site_authority = get_authority(slice_authority).lower()
 147         print>>sys.stderr, " \r\n \r\n \t slices.py get_peer slice_authority  %s site_authority %s" %(slice_authority,site_authority)
 148         # check if we are already peered with this site_authority, if so
 149         #peers = self.api.driver.GetPeers({}, ['peer_id', 'peername', 'shortname', 'hrn_root'])
 150         #for peer_record in peers:
 151             #names = [name.lower() for name in peer_record.values() if isinstance(name, StringTypes)]
 152             #if site_authority in names:
 153                 #peer = peer_record
 154
 155         return peer
 156
 157     def get_sfa_peer(self, xrn):
 158         hrn, type = urn_to_hrn(xrn)
 159
 160         # return the authority for this hrn or None if we are the authority
 161         sfa_peer = None
 162         slice_authority = get_authority(hrn)
 163         site_authority = get_authority(slice_authority)
 164
 165         if site_authority != self.driver.hrn:
 166             sfa_peer = site_authority
 167
 168         return sfa_peer
 169
 170     def verify_slice_nodes(self, slice, requested_slivers, peer):
 171         current_slivers = []
 172         deleted_nodes = []
 173         if slice['node_ids']:
 174             nodes = self.driver.GetNodes(slice['node_ids'], ['hostname'])
 175             current_slivers = [node['hostname'] for node in nodes]
 176
 177             # remove nodes not in rspec
 178             deleted_nodes = list(set(current_slivers).difference(requested_slivers))
 179
 180         # add nodes from rspec
 181         added_nodes = list(set(requested_slivers).difference(current_slivers))
 182         print>>sys.stderr , "\r\n \r\n \t slices.py  verify_slice_nodes added_nodes %s slice %s" %( added_nodes,slice)
 183         try:
 184             #if peer:
 185                 #self.driver.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 186             #PI is a list, get the only username in this list
 187             #so that the OAR/LDAP knows the user: remove the authority from the name
 188             tmp=  slice['PI'][0].split(".")
 189             username = tmp[(len(tmp)-1)]
 190             self.driver.AddSliceToNodes(slice['name'], added_nodes, username)
 191             if deleted_nodes:
 192                 self.driver.DeleteSliceFromNodes(slice['name'], deleted_nodes)
 193
 194         except:
 195             self.logger.log_exc('Failed to add/remove slice from nodes')
 196
 197     def free_egre_key(self):
 198         used = set()
 199         for tag in self.driver.GetSliceTags({'tagname': 'egre_key'}):
 200                 used.add(int(tag['value']))
 201
 202         for i in range(1, 256):
 203             if i not in used:
 204                 key = i
 205                 break
 206         else:
 207             raise KeyError("No more EGRE keys available")
 208
 209         return str(key)
 210
 211
 212
 213
 214
 215
 216     def handle_peer(self, site, slice, persons, peer):
 217         if peer:
 218             # bind site
 219             try:
 220                 if site:
 221                     self.driver.BindObjectToPeer('site', site['site_id'], peer['shortname'], slice['site_id'])
 222             except Exception,e:
 223                 self.driver.DeleteSite(site['site_id'])
 224                 raise e
 225
 226             # bind slice
 227             try:
 228                 if slice:
 229                     self.driver.BindObjectToPeer('slice', slice['slice_id'], peer['shortname'], slice['slice_id'])
 230             except Exception,e:
 231                 self.driver.DeleteSlice(slice['slice_id'])
 232                 raise e
 233
 234             # bind persons
 235             for person in persons:
 236                 try:
 237                     self.driver.BindObjectToPeer('person',
 238                                                      person['person_id'], peer['shortname'], person['peer_person_id'])
 239
 240                     for (key, remote_key_id) in zip(person['keys'], person['key_ids']):
 241                         try:
 242                             self.driver.BindObjectToPeer( 'key', key['key_id'], peer['shortname'], remote_key_id)
 243                         except:
 244                             self.driver.DeleteKey(key['key_id'])
 245                             self.logger("failed to bind key: %s to peer: %s " % (key['key_id'], peer['shortname']))
 246                 except Exception,e:
 247                     self.driver.DeletePerson(person['person_id'])
 248                     raise e
 249
 250         return slice
 251
 252     #def verify_site(self, slice_xrn, slice_record={}, peer=None, sfa_peer=None, options={}):
 253         #(slice_hrn, type) = urn_to_hrn(slice_xrn)
 254         #site_hrn = get_authority(slice_hrn)
 255         ## login base can't be longer than 20 characters
 256         ##slicename = hrn_to_pl_slicename(slice_hrn)
 257         #authority_name = slice_hrn.split('.')[0]
 258         #login_base = authority_name[:20]
 259         #print >>sys.stderr, " \r\n \r\n \t\t SLABSLICES.PY verify_site authority_name %s  login_base %s slice_hrn %s" %(authority_name,login_base,slice_hrn)
 260
 261         #sites = self.driver.GetSites(login_base)
 262         #if not sites:
 263             ## create new site record
 264             #site = {'name': 'geni.%s' % authority_name,
 265                     #'abbreviated_name': authority_name,
 266                     #'login_base': login_base,
 267                     #'max_slices': 100,
 268                     #'max_slivers': 1000,
 269                     #'enabled': True,
 270                     #'peer_site_id': None}
 271             #if peer:
 272                 #site['peer_site_id'] = slice_record.get('site_id', None)
 273             #site['site_id'] = self.driver.AddSite(site)
 274             ## exempt federated sites from monitor policies
 275             #self.driver.AddSiteTag(site['site_id'], 'exempt_site_until', "20200101")
 276
 277             ### is this still necessary?
 278             ### add record to the local registry
 279             ##if sfa_peer and slice_record:
 280                 ##peer_dict = {'type': 'authority', 'hrn': site_hrn, \
 281                              ##'peer_authority': sfa_peer, 'pointer': site['site_id']}
 282                 ##self.registry.register_peer_object(self.credential, peer_dict)
 283         #else:
 284             #site =  sites[0]
 285             #if peer:
 286                 ## unbind from peer so we can modify if necessary. Will bind back later
 287                 #self.driver.UnBindObjectFromPeer('site', site['site_id'], peer['shortname'])
 288
 289         #return site
 290
 291     def verify_slice(self, slice_hrn, slice_record, peer, sfa_peer, options={} ):
 292         #slicename = hrn_to_pl_slicename(slice_hrn)
 293         #parts = hrn_to_pl_slicename(slice_hrn).split("_")
 294         login_base = slice_hrn.split(".")[0]
 295         slicename = slice_hrn
 296         slices = self.driver.GetSlices([slicename])
 297         print>>sys.stderr, " \r\n \r\rn Slices.py verify_slice slicename %s slices %s slice_record %s"%(slicename ,slices, slice_record)
 298         if not slices:
 299             slice = {'name': slicename,
 300                      'url': slice_record.get('url', slice_hrn),
 301                      #'description': slice_record.get('description', slice_hrn)
 302                      }
 303             # add the slice
 304             slice['slice_id'] = self.driver.AddSlice(slice)
 305             slice['node_ids'] = []
 306             slice['person_ids'] = []
 307             #if peer:
 308                 #slice['peer_slice_id'] = slice_record.get('slice_id', None)
 309             # mark this slice as an sfa peer record
 310             #if sfa_peer:
 311                 #peer_dict = {'type': 'slice', 'hrn': slice_hrn,
 312                              #'peer_authority': sfa_peer, 'pointer': slice['slice_id']}
 313                 #self.registry.register_peer_object(self.credential, peer_dict)
 314         else:
 315             slice = slices[0]
 316             slice.update(slice_record)
 317             #del slice['last_updated']
 318             #del slice['date_created']
 319             #if peer:
 320                 #slice['peer_slice_id'] = slice_record.get('slice_id', None)
 321                 ## unbind from peer so we can modify if necessary. Will bind back later
 322                 #self.driver.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 323                 #Update existing record (e.g. expires field) it with the latest info.
 324             ##if slice_record and slice['expires'] != slice_record['expires']:
 325                 ##self.driver.UpdateSlice( slice['slice_id'], {'expires' : slice_record['expires']})
 326
 327         return slice
 328
 329     #def get_existing_persons(self, users):
 330     def verify_persons(self, slice_hrn, slice_record, users,  peer, sfa_peer, options={}):
 331         users_by_id = {}
 332         users_by_hrn = {}
 333         users_dict = {}
 334
 335         for user in users:
 336             if 'person_id' in user and 'hrn' in user:
 337                 users_by_id[user['person_id']] = user
 338                 users_dict[user['person_id']] = {'person_id':user['person_id'], 'hrn':user['hrn']}
 339
 340                 users_by_hrn[user['hrn']] = user
 341                 users_dict[user['hrn']] = {'person_id':user['person_id'], 'hrn':user['hrn']}
 342
 343         #print>>sys.stderr, " \r\n \r\n \t slabslices.py verify_person  users_dict %s \r\n user_by_hrn %s \r\n \tusers_by_id %s " %( users_dict,users_by_hrn, users_by_id)
 344
 345         existing_user_ids = []
 346         existing_user_hrns = []
 347         existing_users= []
 348         #Check if user is in LDAP using its hrn.
 349         #Assuming Senslab is centralised :  one LDAP for all sites, user_id unknown from LDAP
 350         # LDAP does not provide users id, therfore we rely on hrns
 351         if users_by_hrn:
 352             existing_users = self.driver.GetPersons({'hrn': users_by_hrn.keys()},
 353                                                         ['hrn','pkey'])
 354             if existing_users:
 355                 for user in existing_users :
 356                     #for  k in users_dict[user['hrn']] :
 357                     existing_user_hrns.append (users_dict[user['hrn']]['hrn'])
 358                     existing_user_ids.append (users_dict[user['hrn']]['person_id'])
 359                     #print>>sys.stderr, " \r\n \r\n \t slabslices.py verify_person  existing_user_ids.append (users_dict[user['hrn']][k]) %s \r\n existing_users %s " %(  existing_user_ids,existing_users)
 360
 361
 362         # requested slice users
 363         requested_user_ids = users_by_id.keys()
 364         requested_user_hrns = users_by_hrn.keys()
 365         #print>>sys.stderr, " \r\n \r\n \t slabslices.py verify_person  requested_user_ids  %s user_by_hrn %s " %( requested_user_ids,users_by_hrn)
 366         # existing slice users
 367         existing_slice_users_filter = {'hrn': slice_record.get('PI', [])}
 368         #print>>sys.stderr, " \r\n \r\n slices.py verify_person requested_user_ids %s existing_slice_users_filter %s slice_record %s" %(requested_user_ids,existing_slice_users_filter,slice_record)
 369
 370         existing_slice_users = self.driver.GetPersons(existing_slice_users_filter,['hrn','pkey'])
 371         #print>>sys.stderr, " \r\n \r\n slices.py verify_person   existing_slice_users %s " %(existing_slice_users)
 372
 373         existing_slice_user_hrns = [user['hrn'] for user in existing_slice_users]
 374
 375         #print>>sys.stderr, " \r\n \r\n slices.py verify_person requested_user_ids %s  existing_slice_user_hrns %s " %(requested_user_ids,existing_slice_user_hrns)
 376         # users to be added, removed or updated
 377
 378         added_user_hrns = set(requested_user_hrns).difference(set(existing_user_hrns))
 379
 380         added_slice_user_hrns = set(requested_user_hrns).difference(existing_slice_user_hrns)
 381
 382         removed_user_hrns = set(existing_slice_user_hrns).difference(requested_user_hrns)
 383
 384
 385         updated_user_hrns = set(existing_slice_user_hrns).intersection(requested_user_hrns)
 386         #print>>sys.stderr, " \r\n \r\n slices.py verify_persons  added_user_ids %s added_slice_user_ids %s " %(added_user_ids,added_slice_user_ids)
 387         #print>>sys.stderr, " \r\n \r\n slices.py verify_persons  removed_user_hrns %s updated_user_hrns %s " %(removed_user_hrns,updated_user_hrns)
 388         # Remove stale users (only if we are not appending)
 389         append = options.get('append', True)
 390         if append == False:
 391             for removed_user_hrn in removed_user_hrns:
 392                 self.driver.DeletePersonFromSlice(removed_user_hrn, slice_record['name'])
 393         # update_existing users
 394         updated_users_list = [user for user in existing_slice_users if user['hrn'] in \
 395           updated_user_hrns]
 396         print>>sys.stderr, " \r\n \r\n slices.py verify_persons  removed_user_hrns %s updated_users_list %s " %(removed_user_hrns,updated_users_list)
 397         #self.verify_keys(existing_slice_users, updated_users_list, peer, append)
 398
 399         added_persons = []
 400         # add new users
 401         for added_user_hrn in added_user_hrns:
 402             added_user = users_dict[added_user_hrn]
 403             #hrn, type = urn_to_hrn(added_user['urn'])
 404             person = {
 405                 #'first_name': added_user.get('first_name', hrn),
 406                 #'last_name': added_user.get('last_name', hrn),
 407                 'person_id': added_user['person_id'],
 408                 #'peer_person_id': None,
 409                 #'keys': [],
 410                 #'key_ids': added_user.get('key_ids', []),
 411
 412             }
 413             #print>>sys.stderr, " \r\n \r\n slices.py verify_persons   added_user_ids %s " %(added_user_ids)
 414             person['person_id'] = self.driver.AddPerson(person)
 415             if peer:
 416                 person['peer_person_id'] = added_user['person_id']
 417             added_persons.append(person)
 418
 419             # enable the account
 420             self.driver.UpdatePerson(person['person_id'], {'enabled': True})
 421
 422             # add person to site
 423             #self.driver.AddPersonToSite(added_user_id, login_base)
 424
 425             #for key_string in added_user.get('keys', []):
 426                 #key = {'key':key_string, 'key_type':'ssh'}
 427                 #key['key_id'] = self.driver.AddPersonKey(person['person_id'], key)
 428                 #person['keys'].append(key)
 429
 430             # add the registry record
 431             #if sfa_peer:
 432                 #peer_dict = {'type': 'user', 'hrn': hrn, 'peer_authority': sfa_peer, \
 433                     #'pointer': person['person_id']}
 434                 #self.registry.register_peer_object(self.credential, peer_dict)
 435         for added_slice_user_hrn in added_slice_user_hrns.union(added_user_hrns):
 436             self.driver.AddPersonToSlice(added_slice_user_hrn, slice_record['name'])
 437         #for added_slice_user_id in added_slice_user_ids.union(added_user_ids):
 438             # add person to the slice
 439             #self.driver.AddPersonToSlice(added_slice_user_id, slice_record['name'])
 440             # if this is a peer record then it should already be bound to a peer.
 441             # no need to return worry about it getting bound later
 442
 443         return added_persons
 444
 445
 446     def verify_keys(self, persons, users, peer, options={}):
 447         # existing keys
 448         key_ids = []
 449         for person in persons:
 450             key_ids.extend(person['key_ids'])
 451         keylist = self.driver.GetKeys(key_ids, ['key_id', 'key'])
 452         keydict = {}
 453         for key in keylist:
 454             keydict[key['key']] = key['key_id']
 455         existing_keys = keydict.keys()
 456         persondict = {}
 457         for person in persons:
 458             persondict[person['email']] = person
 459
 460         # add new keys
 461         requested_keys = []
 462         updated_persons = []
 463         for user in users:
 464             user_keys = user.get('keys', [])
 465             updated_persons.append(user)
 466             for key_string in user_keys:
 467                 requested_keys.append(key_string)
 468                 if key_string not in existing_keys:
 469                     key = {'key': key_string, 'key_type': 'ssh'}
 470                     try:
 471                         if peer:
 472                             person = persondict[user['email']]
 473                             self.driver.UnBindObjectFromPeer('person', person['person_id'], peer['shortname'])
 474                         key['key_id'] = self.driver.AddPersonKey(user['email'], key)
 475                         if peer:
 476                             key_index = user_keys.index(key['key'])
 477                             remote_key_id = user['key_ids'][key_index]
 478                             self.driver.BindObjectToPeer('key', key['key_id'], peer['shortname'], remote_key_id)
 479
 480                     finally:
 481                         if peer:
 482                             self.driver.BindObjectToPeer('person', person['person_id'], peer['shortname'], user['person_id'])
 483
 484         # remove old keys (only if we are not appending)
 485         if append == False:
 486             removed_keys = set(existing_keys).difference(requested_keys)
 487             for existing_key_id in keydict:
 488                 if keydict[existing_key_id] in removed_keys:
 489                     try:
 490                         if peer:
 491                             self.driver.UnBindObjectFromPeer('key', existing_key_id, peer['shortname'])
 492                         self.driver.DeleteKey(existing_key_id)
 493                     except:
 494                         pass
 495
 496     #def verify_slice_attributes(self, slice, requested_slice_attributes, append=False, admin=False):
 497         ## get list of attributes users ar able to manage
 498         #filter = {'category': '*slice*'}
 499         #if not admin:
 500             #filter['|roles'] = ['user']
 501         #slice_attributes = self.driver.GetTagTypes(filter)
 502         #valid_slice_attribute_names = [attribute['tagname'] for attribute in slice_attributes]
 503
 504         ## get sliver attributes
 505         #added_slice_attributes = []
 506         #removed_slice_attributes = []
 507         #ignored_slice_attribute_names = []
 508         #existing_slice_attributes = self.driver.GetSliceTags({'slice_id': slice['slice_id']})
 509
 510         ## get attributes that should be removed
 511         #for slice_tag in existing_slice_attributes:
 512             #if slice_tag['tagname'] in ignored_slice_attribute_names:
 513                 ## If a slice already has a admin only role it was probably given to them by an
 514                 ## admin, so we should ignore it.
 515                 #ignored_slice_attribute_names.append(slice_tag['tagname'])
 516             #else:
 517                 ## If an existing slice attribute was not found in the request it should
 518                 ## be removed
 519                 #attribute_found=False
 520                 #for requested_attribute in requested_slice_attributes:
 521                     #if requested_attribute['name'] == slice_tag['tagname'] and \
 522                        #requested_attribute['value'] == slice_tag['value']:
 523                         #attribute_found=True
 524                         #break
 525
 526             #if not attribute_found and not append:
 527                 #removed_slice_attributes.append(slice_tag)
 528
 529         ## get attributes that should be added:
 530         #for requested_attribute in requested_slice_attributes:
 531             ## if the requested attribute wasn't found  we should add it
 532             #if requested_attribute['name'] in valid_slice_attribute_names:
 533                 #attribute_found = False
 534                 #for existing_attribute in existing_slice_attributes:
 535                     #if requested_attribute['name'] == existing_attribute['tagname'] and \
 536                        #requested_attribute['value'] == existing_attribute['value']:
 537                         #attribute_found=True
 538                         #break
 539                 #if not attribute_found:
 540                     #added_slice_attributes.append(requested_attribute)
 541
 542
 543         ## remove stale attributes
 544         #for attribute in removed_slice_attributes:
 545             #try:
 546                 #self.driver.DeleteSliceTag(attribute['slice_tag_id'])
 547             #except Exception, e:
 548                 #self.logger.warn('Failed to remove sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 549                                 #% (name, value,  node_id, str(e)))
 550
 551         ## add requested_attributes
 552         #for attribute in added_slice_attributes:
 553             #try:
 554                 #self.driver.AddSliceTag(slice['name'], attribute['name'], attribute['value'], attribute.get('node_id', None))
 555             #except Exception, e:
 556                 #self.logger.warn('Failed to add sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 557                                 #% (name, value,  node_id, str(e)))
 558
 559     #def create_slice_aggregate(self, xrn, rspec):
 560         #hrn, type = urn_to_hrn(xrn)
 561         ## Determine if this is a peer slice
 562         #peer = self.get_peer(hrn)
 563         #sfa_peer = self.get_sfa_peer(hrn)
 564
 565         #spec = RSpec(rspec)
 566         ## Get the slice record from sfa
 567         #slicename = hrn_to_pl_slicename(hrn)
 568         #slice = {}
 569         #slice_record = None
 570         #registry = self.api.registries[self.api.hrn]
 571         #credential = self.api.getCredential()
 572
 573         #site_id, remote_site_id = self.verify_site(registry, credential, hrn, peer, sfa_peer)
 574         #slice = self.verify_slice(registry, credential, hrn, site_id, remote_site_id, peer, sfa_peer)
 575
 576         ## find out where this slice is currently running
 577         #nodelist = self.driver.GetNodes(slice['node_ids'], ['hostname'])
 578         #hostnames = [node['hostname'] for node in nodelist]
 579
 580         ## get netspec details
 581         #nodespecs = spec.getDictsByTagName('NodeSpec')
 582
 583         ## dict in which to store slice attributes to set for the nodes
 584         #nodes = {}
 585         #for nodespec in nodespecs:
 586             #if isinstance(nodespec['name'], list):
 587                 #for nodename in nodespec['name']:
 588                     #nodes[nodename] = {}
 589                     #for k in nodespec.keys():
 590                         #rspec_attribute_value = nodespec[k]
 591                         #if (self.rspec_to_slice_tag.has_key(k)):
 592                             #slice_tag_name = self.rspec_to_slice_tag[k]
 593                             #nodes[nodename][slice_tag_name] = rspec_attribute_value
 594             #elif isinstance(nodespec['name'], StringTypes):
 595                 #nodename = nodespec['name']
 596                 #nodes[nodename] = {}
 597                 #for k in nodespec.keys():
 598                     #rspec_attribute_value = nodespec[k]
 599                     #if (self.rspec_to_slice_tag.has_key(k)):
 600                         #slice_tag_name = self.rspec_to_slice_tag[k]
 601                         #nodes[nodename][slice_tag_name] = rspec_attribute_value
 602
 603                 #for k in nodespec.keys():
 604                     #rspec_attribute_value = nodespec[k]
 605                     #if (self.rspec_to_slice_tag.has_key(k)):
 606                         #slice_tag_name = self.rspec_to_slice_tag[k]
 607                         #nodes[nodename][slice_tag_name] = rspec_attribute_value
 608
 609         #node_names = nodes.keys()
 610         ## remove nodes not in rspec
 611         #deleted_nodes = list(set(hostnames).difference(node_names))
 612         ## add nodes from rspec
 613         #added_nodes = list(set(node_names).difference(hostnames))
 614
 615         #try:
 616             #if peer:
 617                 #self.driver.UnBindObjectFromPeer('slice', slice['slice_id'], peer)
 618
 619             #self.driver.AddSliceToNodes(slicename, added_nodes)
 620
 621             ## Add recognized slice tags
 622             #for node_name in node_names:
 623                 #node = nodes[node_name]
 624                 #for slice_tag in node.keys():
 625                     #value = node[slice_tag]
 626                     #if (isinstance(value, list)):
 627                         #value = value[0]
 628
 629                     #self.driver.AddSliceTag(slicename, slice_tag, value, node_name)
 630
 631             #self.driver.DeleteSliceFromNodes(slicename, deleted_nodes)
 632         #finally:
 633             #if peer:
 634                 #self.driver.BindObjectToPeer('slice', slice['slice_id'], peer, slice['peer_slice_id'])
 635
 636         #return 1
 637