sfa/senslab/slabslices.py

   1 from sfa.util.xrn import get_authority, urn_to_hrn
   2 from sfa.util.sfalogging import logger
   3
   4
   5 MAXINT =  2L**31-1
   6
   7 class SlabSlices:
   8
   9     rspec_to_slice_tag = {'max_rate':'net_max_rate'}
  10
  11     #def __init__(self, api, ttl = .5, origin_hrn=None):
  12         #self.api = api
  13         ##filepath = path + os.sep + filename
  14         #self.policy = Policy(self.api)
  15         #self.origin_hrn = origin_hrn
  16         #self.registry = api.registries[api.hrn]
  17         #self.credential = api.getCredential()
  18         #self.nodes = []
  19         #self.persons = []
  20
  21
  22     def __init__(self, driver):
  23         self.driver = driver
  24
  25     ##Used in SFACE?
  26     #def get_slivers(self, xrn, node=None):
  27         #hrn, hrn_type = urn_to_hrn(xrn)
  28
  29         #slice_name = hrn_to_pl_slicename(hrn)
  30         ## XX Should we just call PLCAPI.GetSliceTicket(slice_name) instead
  31         ## of doing all of this?
  32         ##return self.api.driver.GetSliceTicket(self.auth, slice_name)
  33
  34
  35
  36         #sfa_slice = self.driver.GetSlices(slice_filter = slice_name, \
  37         #                                   slice_filter_type = 'slice_hrn')
  38
  39
  40         ## Get user information
  41         ##TODO
  42         #alchemy_person = dbsession.query(RegRecord).filter_by(record_id = \
  43                                         #sfa_slice['record_id_user']).first()
  44
  45         #slivers = []
  46         #sliver_attributes = []
  47
  48         #if sfa_slice['oar_job_id'] is not -1:
  49             #nodes_all = self.driver.GetNodes({'hostname': \
  50                                                     #sfa_slice['node_ids']},
  51                             #['node_id', 'hostname','site','boot_state'])
  52             #nodeall_byhostname = dict([(n['hostname'], n) for n in nodes_all])
  53             #nodes = sfa_slice['node_ids']
  54
  55             #for node in nodes:
  56                 ##for sliver_attribute in filter(lambda a: a['node_id'] == \
  57                                                 #node['node_id'], slice_tags):
  58                 #sliver_attribute['tagname'] = 'slab-tag'
  59                 #sliver_attribute['value'] = 'slab-value'
  60                 #sliver_attributes.append(sliver_attribute['tagname'])
  61                 #attributes.append({'tagname': sliver_attribute['tagname'],
  62                                     #'value': sliver_attribute['value']})
  63
  64             ## set nodegroup slice attributes
  65             #for slice_tag in filter(lambda a: a['nodegroup_id'] \
  66                                         #in node['nodegroup_ids'], slice_tags):
  67                 ## Do not set any nodegroup slice attributes for
  68                 ## which there is at least one sliver attribute
  69                 ## already set.
  70                 #if slice_tag not in slice_tags:
  71                     #attributes.append({'tagname': slice_tag['tagname'],
  72                         #'value': slice_tag['value']})
  73
  74             #for slice_tag in filter(lambda a: a['node_id'] is None, \
  75                                                             #slice_tags):
  76                 ## Do not set any global slice attributes for
  77                 ## which there is at least one sliver attribute
  78                 ## already set.
  79                 #if slice_tag['tagname'] not in sliver_attributes:
  80                     #attributes.append({'tagname': slice_tag['tagname'],
  81                                    #'value': slice_tag['value']})
  82
  83             ## XXX Sanity check; though technically this should
  84             ## be a system invariant
  85             ## checked with an assertion
  86             #if sfa_slice['expires'] > MAXINT:  sfa_slice['expires']= MAXINT
  87
  88             #slivers.append({
  89                 #'hrn': hrn,
  90                 #'name': sfa_slice['name'],
  91                 #'slice_id': sfa_slice['slice_id'],
  92                 #'instantiation': sfa_slice['instantiation'],
  93                 #'expires': sfa_slice['expires'],
  94                 #'keys': keys,
  95                 #'attributes': attributes
  96             #})
  97
  98         #return slivers
  99
 100
 101
 102
 103
 104         #return slivers
 105     def get_peer(self, xrn):
 106         hrn, hrn_type = urn_to_hrn(xrn)
 107         #Does this slice belong to a local site or a peer senslab site?
 108         peer = None
 109
 110         # get this slice's authority (site)
 111         slice_authority = get_authority(hrn)
 112         site_authority = slice_authority
 113         # get this site's authority (sfa root authority or sub authority)
 114         #site_authority = get_authority(slice_authority).lower()
 115         logger.debug("SLABSLICES \ get_peer slice_authority  %s \
 116                     site_authority %s hrn %s" %(slice_authority, \
 117                                         site_authority, hrn))
 118         #This slice belongs to the current site
 119         if site_authority == self.driver.root_auth :
 120             return None
 121         # check if we are already peered with this site_authority, if so
 122         #peers = self.driver.GetPeers({})
 123         peers = self.driver.GetPeers(peer_filter = slice_authority)
 124         for peer_record in peers:
 125
 126             if site_authority == peer_record.hrn:
 127                 peer = peer_record
 128         logger.debug(" SLABSLICES \tget_peer peer  %s " %(peer))
 129         return peer
 130
 131     def get_sfa_peer(self, xrn):
 132         hrn, hrn_type = urn_to_hrn(xrn)
 133
 134         # return the authority for this hrn or None if we are the authority
 135         sfa_peer = None
 136         slice_authority = get_authority(hrn)
 137         site_authority = get_authority(slice_authority)
 138
 139         if site_authority != self.driver.hrn:
 140             sfa_peer = site_authority
 141
 142         return sfa_peer
 143
 144
 145     def verify_slice_leases(self, sfa_slice, requested_jobs_dict, kept_leases, \
 146         peer):
 147
 148
 149         #First get the list of current leases from OAR
 150         leases = self.driver.GetLeases({'name':sfa_slice['name']})
 151         #leases = self.driver.GetLeases({'name':sfa_slice['name']}, ['lease_id'])
 152         if leases :
 153             current_leases = [lease['lease_id'] for lease in leases]
 154             #Deleted leases are the ones with lease id not declared in the Rspec
 155             deleted_leases = list(set(current_leases).difference(kept_leases))
 156
 157             try:
 158                 if peer:
 159                     #peer = RegAuyhority object is unsubscriptable
 160                     #TODO :UnBindObjectFromPeer Quick and dirty auth='senslab2 SA 27/07/12
 161                     self.driver.UnBindObjectFromPeer('senslab2', 'slice', \
 162                                     sfa_slice['record_id_slice'], peer.hrn)
 163
 164                 self.driver.DeleteLeases(deleted_leases, \
 165                                         sfa_slice['name'])
 166
 167             #TODO : catch other exception?
 168             except KeyError:
 169                 logger.log_exc('Failed to add/remove slice leases')
 170
 171         #Add new leases
 172         for start_time in requested_jobs_dict:
 173             job = requested_jobs_dict[start_time]
 174             self.driver.AddLeases(job['hostname'], \
 175                         sfa_slice, int(job['start_time']), \
 176                         int(job['duration']))
 177
 178         return leases
 179
 180     def verify_slice_nodes(self, sfa_slice, requested_slivers, peer):
 181         current_slivers = []
 182         deleted_nodes = []
 183
 184         if sfa_slice['node_ids']:
 185             nodes = self.driver.GetNodes(sfa_slice['node_ids'], ['hostname'])
 186             current_slivers = [node['hostname'] for node in nodes]
 187
 188             # remove nodes not in rspec
 189             deleted_nodes = list(set(current_slivers).\
 190                                                 difference(requested_slivers))
 191             # add nodes from rspec
 192             #added_nodes = list(set(requested_slivers).difference(current_slivers))
 193
 194             #Update the table with the nodes that populate the slice
 195             logger.debug("SLABSLICES \tverify_slice_nodes slice %s\
 196                                          \r\n \r\n deleted_nodes %s"\
 197                                         %(sfa_slice,deleted_nodes))
 198
 199             if deleted_nodes:
 200                 self.driver.DeleteSliceFromNodes(sfa_slice['name'], \
 201                                                                 deleted_nodes)
 202             return nodes
 203
 204
 205
 206     def free_egre_key(self):
 207         used = set()
 208         for tag in self.driver.GetSliceTags({'tagname': 'egre_key'}):
 209             used.add(int(tag['value']))
 210
 211         for i in range(1, 256):
 212             if i not in used:
 213                 key = i
 214                 break
 215         else:
 216             raise KeyError("No more EGRE keys available")
 217
 218         return str(key)
 219
 220
 221
 222
 223
 224
 225     def handle_peer(self, site, sfa_slice, persons, peer):
 226         if peer:
 227             # bind site
 228             try:
 229                 if site:
 230                     self.driver.BindObjectToPeer('site', site['site_id'], \
 231                                         peer['shortname'], sfa_slice['site_id'])
 232             except Exception, error:
 233                 self.driver.DeleteSite(site['site_id'])
 234                 raise error
 235
 236             # bind slice
 237             try:
 238                 if sfa_slice:
 239                     self.driver.BindObjectToPeer('slice', slice['slice_id'], \
 240                                     peer['shortname'], sfa_slice['slice_id'])
 241             except Exception, error:
 242                 self.driver.DeleteSlice(sfa_slice['slice_id'])
 243                 raise error
 244
 245             # bind persons
 246             for person in persons:
 247                 try:
 248                     self.driver.BindObjectToPeer('person', \
 249                                     person['person_id'], peer['shortname'], \
 250                                     person['peer_person_id'])
 251
 252                     for (key, remote_key_id) in zip(person['keys'], \
 253                                                         person['key_ids']):
 254                         try:
 255                             self.driver.BindObjectToPeer( 'key', \
 256                                             key['key_id'], peer['shortname'], \
 257                                             remote_key_id)
 258                         except:
 259                             self.driver.DeleteKey(key['key_id'])
 260                             logger.log_exc("failed to bind key: %s \
 261                                             to peer: %s " % (key['key_id'], \
 262                                             peer['shortname']))
 263                 except Exception, error:
 264                     self.driver.DeletePerson(person['person_id'])
 265                     raise error
 266
 267         return sfa_slice
 268
 269     #def verify_site(self, slice_xrn, slice_record={}, peer=None, \
 270                                         #sfa_peer=None, options={}):
 271         #(slice_hrn, type) = urn_to_hrn(slice_xrn)
 272         #site_hrn = get_authority(slice_hrn)
 273         ## login base can't be longer than 20 characters
 274         ##slicename = hrn_to_pl_slicename(slice_hrn)
 275         #authority_name = slice_hrn.split('.')[0]
 276         #login_base = authority_name[:20]
 277         #logger.debug(" SLABSLICES.PY \tverify_site authority_name %s  \
 278                                         #login_base %s slice_hrn %s" \
 279                                         #%(authority_name,login_base,slice_hrn)
 280
 281         #sites = self.driver.GetSites(login_base)
 282         #if not sites:
 283             ## create new site record
 284             #site = {'name': 'geni.%s' % authority_name,
 285                     #'abbreviated_name': authority_name,
 286                     #'login_base': login_base,
 287                     #'max_slices': 100,
 288                     #'max_slivers': 1000,
 289                     #'enabled': True,
 290                     #'peer_site_id': None}
 291             #if peer:
 292                 #site['peer_site_id'] = slice_record.get('site_id', None)
 293             #site['site_id'] = self.driver.AddSite(site)
 294             ## exempt federated sites from monitor policies
 295             #self.driver.AddSiteTag(site['site_id'], 'exempt_site_until', \
 296                                                                 #"20200101")
 297
 298             ### is this still necessary?
 299             ### add record to the local registry
 300             ##if sfa_peer and slice_record:
 301                 ##peer_dict = {'type': 'authority', 'hrn': site_hrn, \
 302                              ##'peer_authority': sfa_peer, 'pointer': \
 303                                                         #site['site_id']}
 304                 ##self.registry.register_peer_object(self.credential, peer_dict)
 305         #else:
 306             #site =  sites[0]
 307             #if peer:
 308                 ## unbind from peer so we can modify if necessary.
 309                 ## Will bind back later
 310                 #self.driver.UnBindObjectFromPeer('site', site['site_id'], \
 311                                                             #peer['shortname'])
 312
 313         #return site
 314
 315     def verify_slice(self, slice_hrn, slice_record, peer, sfa_peer):
 316
 317         #login_base = slice_hrn.split(".")[0]
 318         slicename = slice_hrn
 319         slices_list = self.driver.GetSlices(slice_filter = slicename, \
 320                                             slice_filter_type = 'slice_hrn')
 321         if slices_list:
 322             for sl in slices_list:
 323
 324                 logger.debug("SLABSLICE \tverify_slice slicename %s sl %s \
 325                                     slice_record %s"%(slicename, sl, slice_record))
 326                 sfa_slice = sl
 327                 sfa_slice.update(slice_record)
 328                 #del slice['last_updated']
 329                 #del slice['date_created']
 330                 #if peer:
 331                     #slice['peer_slice_id'] = slice_record.get('slice_id', None)
 332                     ## unbind from peer so we can modify if necessary.
 333                     ## Will bind back later
 334                     #self.driver.UnBindObjectFromPeer('slice', slice['slice_id'], \
 335                                                                 #peer['shortname'])
 336                 #Update existing record (e.g. expires field)
 337                     #it with the latest info.
 338                 ##if slice_record and slice['expires'] != slice_record['expires']:
 339                     ##self.driver.UpdateSlice( slice['slice_id'], {'expires' : \
 340                                                         #slice_record['expires']})
 341         else:
 342             logger.debug(" SLABSLICES \tverify_slice Oups \
 343                         slice_record %s peer %s sfa_peer %s "\
 344                         %(slice_record, peer,sfa_peer))
 345             sfa_slice = {'slice_hrn': slicename,
 346                      #'url': slice_record.get('url', slice_hrn),
 347                      #'description': slice_record.get('description', slice_hrn)
 348                      'node_list' : [],
 349                      'record_id_user' : slice_record['person_ids'][0],
 350                      'record_id_slice': slice_record['record_id'],
 351                      'peer_authority':str(peer.hrn)
 352
 353                      }
 354             # add the slice
 355             self.driver.AddSlice(sfa_slice)
 356             #slice['slice_id'] = self.driver.AddSlice(slice)
 357             logger.debug("SLABSLICES \tverify_slice ADDSLICE OK")
 358             #slice['node_ids']=[]
 359             #slice['person_ids'] = []
 360             #if peer:
 361                 #slice['peer_slice_id'] = slice_record.get('slice_id', None)
 362             # mark this slice as an sfa peer record
 363             #if sfa_peer:
 364                 #peer_dict = {'type': 'slice', 'hrn': slice_hrn,
 365                              #'peer_authority': sfa_peer, 'pointer': \
 366                                                     #slice['slice_id']}
 367                 #self.registry.register_peer_object(self.credential, peer_dict)
 368
 369
 370
 371         return sfa_slice
 372
 373
 374     def verify_persons(self, slice_hrn, slice_record, users,  peer, sfa_peer, \
 375                                                                 options={}):
 376         #TODO SA 21/08/12 verify_persons Needs review
 377         users_by_id = {}
 378         users_by_hrn = {}
 379         users_dict = {}
 380
 381         for user in users:
 382
 383             if 'urn' in user and (not 'hrn' in user ) :
 384                 user['hrn'], user['type'] = urn_to_hrn(user['urn'])
 385
 386             if 'person_id' in user and 'hrn' in user:
 387                 users_by_id[user['person_id']] = user
 388                 users_dict[user['person_id']] = {'person_id':\
 389                                         user['person_id'], 'hrn':user['hrn']}
 390
 391                 users_by_hrn[user['hrn']] = user
 392                 users_dict[user['hrn']] = {'person_id':user['person_id'], \
 393                                                         'hrn':user['hrn']}
 394
 395
 396         logger.debug( "SLABSLICE.PY \tverify_person  \
 397                         users_dict %s \r\n user_by_hrn %s \r\n \
 398                         \tusers_by_id %s " \
 399                         %(users_dict,users_by_hrn, users_by_id))
 400
 401         existing_user_ids = []
 402         existing_user_hrns = []
 403         existing_users = []
 404         #Check if user is in Senslab LDAP using its hrn.
 405         #Assuming Senslab is centralised :  one LDAP for all sites,
 406         # user_id unknown from LDAP
 407         # LDAP does not provide users id, therefore we rely on hrns
 408         # If the hrn is not a senslab hrn, the user may not be in LDAP.
 409         if users_by_hrn:
 410             #Construct the list of filters for GetPersons
 411             filter_user = []
 412             for hrn in users_by_hrn:
 413                 filter_user.append (users_by_hrn[hrn])
 414             logger.debug(" SLABSLICE.PY \tverify_person  filter_user %s " \
 415                                                     %(filter_user))
 416             existing_users = self.driver.GetPersons(filter_user)
 417             if existing_users:
 418                 for user in existing_users :
 419                     existing_user_hrns.append(users_dict[user['hrn']]['hrn'])
 420                     existing_user_ids.\
 421                                     append(users_dict[user['hrn']]['person_id'])
 422
 423             #User from another federated site ,
 424             #does not have a senslab account yet?
 425             #Check in the LDAP if we know email,
 426             #maybe he has multiple SFA accounts = multiple hrns.
 427             #Check before adding  them to LDAP
 428             else:
 429                 req = 'mail='
 430                 if isinstance(users, list):
 431                     req += users[0]['email']
 432                 else:
 433                     req += users['email']
 434
 435                 ldap_reslt = self.driver.ldap.LdapSearch(req)
 436                 if ldap_reslt:
 437                     logger.debug(" SLABSLICE.PY \tverify_person users \
 438                                 USER already in Senslab \t ldap_reslt %s "%( ldap_reslt))
 439                     existing_users.append(ldap_reslt[1])
 440
 441                 else:
 442                     #User not existing in LDAP
 443                     #TODO SA 21/08/12 raise something to add user or add it auto ?
 444                     logger.debug(" SLABSLICE.PY \tverify_person users \
 445                                 not in ldap ...NEW ACCOUNT NEEDED %s \r\n \t ldap_reslt %s "  \
 446                                                 %(users, ldap_reslt))
 447
 448         requested_user_ids = users_by_id.keys()
 449         requested_user_hrns = users_by_hrn.keys()
 450         logger.debug("SLABSLICE.PY \tverify_person requested_user_ids  %s \
 451                         user_by_hrn %s " %(requested_user_ids, users_by_hrn))
 452
 453
 454         #Check that the user of the slice in the slice record
 455         #matches the existing users
 456         try:
 457             if slice_record['record_id_user'] in requested_user_ids and \
 458                                 slice_record['PI'][0] in requested_user_hrns:
 459                 logger.debug(" SLABSLICE  \tverify_person  \
 460                         requested_user_ids %s = \
 461                         slice_record['record_id_user'] %s" \
 462                         %(requested_user_ids,slice_record['record_id_user']))
 463
 464         except KeyError:
 465             pass
 466
 467         #existing_slice_user_hrns = [user['hrn'] for \
 468                                         #user in existing_slice_users]
 469
 470         # users to be added, removed or updated
 471         #One user in one senslab slice : there should be no need
 472         #to remove/ add any user from/to a slice.
 473         #However a user from SFA which is not registered in Senslab yet
 474         #should be added to the LDAP.
 475
 476         added_user_hrns = set(requested_user_hrns).\
 477                                             difference(set(existing_user_hrns))
 478
 479         #self.verify_keys(existing_slice_users, updated_users_list, \
 480                                                             #peer, append)
 481
 482         added_persons = []
 483         # add new users
 484         for added_user_hrn in added_user_hrns:
 485             added_user = users_dict[added_user_hrn]
 486             #hrn, type = urn_to_hrn(added_user['urn'])
 487             person = {
 488                 #'first_name': added_user.get('first_name', hrn),
 489                 #'last_name': added_user.get('last_name', hrn),
 490                 'first_name': added_user['first_name'],
 491                 'last_name': added_user['last_name'],
 492                 'person_id': added_user['person_id'],
 493                 'peer_person_id': None,
 494                 'keys': [],
 495                 'key_ids': added_user.get('key_ids', []),
 496
 497             }
 498             person['person_id'] = self.driver.AddPerson(person)
 499             if peer:
 500                 person['peer_person_id'] = added_user['person_id']
 501             added_persons.append(person)
 502
 503             # enable the account
 504             self.driver.UpdatePerson(person['person_id'], {'enabled': True})
 505
 506             # add person to site
 507             #self.driver.AddPersonToSite(added_user_id, login_base)
 508
 509             #for key_string in added_user.get('keys', []):
 510                 #key = {'key':key_string, 'key_type':'ssh'}
 511                 #key['key_id'] = self.driver.AddPersonKey(person['person_id'], \
 512                                                 #                       key)
 513                 #person['keys'].append(key)
 514
 515             # add the registry record
 516             #if sfa_peer:
 517                 #peer_dict = {'type': 'user', 'hrn': hrn, 'peer_authority': \
 518                                                 #sfa_peer, \
 519                                                 #'pointer': person['person_id']}
 520                 #self.registry.register_peer_object(self.credential, peer_dict)
 521         #for added_slice_user_hrn in \
 522                                 #added_slice_user_hrns.union(added_user_hrns):
 523             #self.driver.AddPersonToSlice(added_slice_user_hrn, \
 524                                                     #slice_record['name'])
 525         #for added_slice_user_id in \
 526                                     #added_slice_user_ids.union(added_user_ids):
 527             # add person to the slice
 528             #self.driver.AddPersonToSlice(added_slice_user_id, \
 529                                                 #slice_record['name'])
 530             # if this is a peer record then it
 531             # should already be bound to a peer.
 532             # no need to return worry about it getting bound later
 533
 534         return added_persons
 535
 536     #Unused
 537     def verify_keys(self, persons, users, peer, options={}):
 538         # existing keys
 539         key_ids = []
 540         for person in persons:
 541             key_ids.extend(person['key_ids'])
 542         keylist = self.driver.GetKeys(key_ids, ['key_id', 'key'])
 543         keydict = {}
 544         for key in keylist:
 545             keydict[key['key']] = key['key_id']
 546         existing_keys = keydict.keys()
 547         persondict = {}
 548         for person in persons:
 549             persondict[person['email']] = person
 550
 551         # add new keys
 552         requested_keys = []
 553         updated_persons = []
 554         for user in users:
 555             user_keys = user.get('keys', [])
 556             updated_persons.append(user)
 557             for key_string in user_keys:
 558                 requested_keys.append(key_string)
 559                 if key_string not in existing_keys:
 560                     key = {'key': key_string, 'key_type': 'ssh'}
 561                     try:
 562                         if peer:
 563                             person = persondict[user['email']]
 564                             self.driver.UnBindObjectFromPeer('person', \
 565                                         person['person_id'], peer['shortname'])
 566                         key['key_id'] = \
 567                                 self.driver.AddPersonKey(user['email'], key)
 568                         if peer:
 569                             key_index = user_keys.index(key['key'])
 570                             remote_key_id = user['key_ids'][key_index]
 571                             self.driver.BindObjectToPeer('key', \
 572                                             key['key_id'], peer['shortname'], \
 573                                             remote_key_id)
 574
 575                     finally:
 576                         if peer:
 577                             self.driver.BindObjectToPeer('person', \
 578                                     person['person_id'], peer['shortname'], \
 579                                     user['person_id'])
 580
 581         # remove old keys (only if we are not appending)
 582         append = options.get('append', True)
 583         if append == False:
 584             removed_keys = set(existing_keys).difference(requested_keys)
 585             for existing_key_id in keydict:
 586                 if keydict[existing_key_id] in removed_keys:
 587
 588                     if peer:
 589                         self.driver.UnBindObjectFromPeer('key', \
 590                                         existing_key_id, peer['shortname'])
 591                     self.driver.DeleteKey(existing_key_id)
 592
 593
 594     #def verify_slice_attributes(self, slice, requested_slice_attributes, \
 595                                             #append=False, admin=False):
 596         ## get list of attributes users ar able to manage
 597         #filter = {'category': '*slice*'}
 598         #if not admin:
 599             #filter['|roles'] = ['user']
 600         #slice_attributes = self.driver.GetTagTypes(filter)
 601         #valid_slice_attribute_names = [attribute['tagname'] \
 602                                             #for attribute in slice_attributes]
 603
 604         ## get sliver attributes
 605         #added_slice_attributes = []
 606         #removed_slice_attributes = []
 607         #ignored_slice_attribute_names = []
 608         #existing_slice_attributes = self.driver.GetSliceTags({'slice_id': \
 609                                                             #slice['slice_id']})
 610
 611         ## get attributes that should be removed
 612         #for slice_tag in existing_slice_attributes:
 613             #if slice_tag['tagname'] in ignored_slice_attribute_names:
 614                 ## If a slice already has a admin only role
 615                 ## it was probably given to them by an
 616                 ## admin, so we should ignore it.
 617                 #ignored_slice_attribute_names.append(slice_tag['tagname'])
 618             #else:
 619                 ## If an existing slice attribute was not
 620                 ## found in the request it should
 621                 ## be removed
 622                 #attribute_found=False
 623                 #for requested_attribute in requested_slice_attributes:
 624                     #if requested_attribute['name'] == slice_tag['tagname'] \
 625                         #and requested_attribute['value'] == slice_tag['value']:
 626                         #attribute_found=True
 627                         #break
 628
 629             #if not attribute_found and not append:
 630                 #removed_slice_attributes.append(slice_tag)
 631
 632         ## get attributes that should be added:
 633         #for requested_attribute in requested_slice_attributes:
 634             ## if the requested attribute wasn't found  we should add it
 635             #if requested_attribute['name'] in valid_slice_attribute_names:
 636                 #attribute_found = False
 637                 #for existing_attribute in existing_slice_attributes:
 638                     #if requested_attribute['name'] == \
 639                         #existing_attribute['tagname'] and \
 640                        #requested_attribute['value'] == \
 641                        #existing_attribute['value']:
 642                         #attribute_found=True
 643                         #break
 644                 #if not attribute_found:
 645                     #added_slice_attributes.append(requested_attribute)
 646
 647
 648         ## remove stale attributes
 649         #for attribute in removed_slice_attributes:
 650             #try:
 651                 #self.driver.DeleteSliceTag(attribute['slice_tag_id'])
 652             #except Exception, error:
 653                 #self.logger.warn('Failed to remove sliver attribute. name: \
 654                                 #%s, value: %s, node_id: %s\nCause:%s'\
 655                                 #% (name, value,  node_id, str(error)))
 656
 657         ## add requested_attributes
 658         #for attribute in added_slice_attributes:
 659             #try:
 660                 #self.driver.AddSliceTag(slice['name'], attribute['name'], \
 661                             #attribute['value'], attribute.get('node_id', None))
 662             #except Exception, error:
 663                 #self.logger.warn('Failed to add sliver attribute. name: %s, \
 664                                 #value: %s, node_id: %s\nCause:%s'\
 665                                 #% (name, value,  node_id, str(error)))
 666
 667