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     def verify_slice_links(self, slice, links, aggregate):
 212
 213             return
 214
 215
 216
 217
 218
 219     def handle_peer(self, site, slice, persons, peer):
 220         if peer:
 221             # bind site
 222             try:
 223                 if site:
 224                     self.driver.BindObjectToPeer('site', site['site_id'], peer['shortname'], slice['site_id'])
 225             except Exception,e:
 226                 self.driver.DeleteSite(site['site_id'])
 227                 raise e
 228
 229             # bind slice
 230             try:
 231                 if slice:
 232                     self.driver.BindObjectToPeer('slice', slice['slice_id'], peer['shortname'], slice['slice_id'])
 233             except Exception,e:
 234                 self.driver.DeleteSlice(slice['slice_id'])
 235                 raise e
 236
 237             # bind persons
 238             for person in persons:
 239                 try:
 240                     self.driver.BindObjectToPeer('person',
 241                                                      person['person_id'], peer['shortname'], person['peer_person_id'])
 242
 243                     for (key, remote_key_id) in zip(person['keys'], person['key_ids']):
 244                         try:
 245                             self.driver.BindObjectToPeer( 'key', key['key_id'], peer['shortname'], remote_key_id)
 246                         except:
 247                             self.driver.DeleteKey(key['key_id'])
 248                             self.logger("failed to bind key: %s to peer: %s " % (key['key_id'], peer['shortname']))
 249                 except Exception,e:
 250                     self.driver.DeletePerson(person['person_id'])
 251                     raise e
 252
 253         return slice
 254
 255     def verify_site(self, slice_xrn, slice_record={}, peer=None, sfa_peer=None, options={}):
 256         (slice_hrn, type) = urn_to_hrn(slice_xrn)
 257         site_hrn = get_authority(slice_hrn)
 258         # login base can't be longer than 20 characters
 259         #slicename = hrn_to_pl_slicename(slice_hrn)
 260         authority_name = slice_hrn.split('.')[0]
 261         login_base = authority_name[:20]
 262         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)
 263
 264         sites = self.driver.GetSites(login_base)
 265         if not sites:
 266             # create new site record
 267             site = {'name': 'geni.%s' % authority_name,
 268                     'abbreviated_name': authority_name,
 269                     'login_base': login_base,
 270                     'max_slices': 100,
 271                     'max_slivers': 1000,
 272                     'enabled': True,
 273                     'peer_site_id': None}
 274             if peer:
 275                 site['peer_site_id'] = slice_record.get('site_id', None)
 276             site['site_id'] = self.driver.AddSite(site)
 277             # exempt federated sites from monitor policies
 278             self.driver.AddSiteTag(site['site_id'], 'exempt_site_until', "20200101")
 279
 280             ## is this still necessary?
 281             ## add record to the local registry
 282             #if sfa_peer and slice_record:
 283                 #peer_dict = {'type': 'authority', 'hrn': site_hrn, \
 284                              #'peer_authority': sfa_peer, 'pointer': site['site_id']}
 285                 #self.registry.register_peer_object(self.credential, peer_dict)
 286         else:
 287             site =  sites[0]
 288             if peer:
 289                 # unbind from peer so we can modify if necessary. Will bind back later
 290                 self.driver.UnBindObjectFromPeer('site', site['site_id'], peer['shortname'])
 291
 292         return site
 293
 294     def verify_slice(self, slice_hrn, slice_record, peer, sfa_peer, options={} ):
 295         #slicename = hrn_to_pl_slicename(slice_hrn)
 296         #parts = hrn_to_pl_slicename(slice_hrn).split("_")
 297         login_base = slice_hrn.split(".")[0]
 298         slicename = slice_hrn
 299         slices = self.driver.GetSlices([slicename])
 300         print>>sys.stderr, " \r\n \r\rn Slices.py verify_slice slicename %s slices %s slice_record %s"%(slicename ,slices, slice_record)
 301         if not slices:
 302             slice = {'name': slicename,
 303                      'url': slice_record.get('url', slice_hrn),
 304                      #'description': slice_record.get('description', slice_hrn)
 305                      }
 306             # add the slice
 307             slice['slice_id'] = self.driver.AddSlice(slice)
 308             slice['node_ids'] = []
 309             slice['person_ids'] = []
 310             if peer:
 311                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 312             # mark this slice as an sfa peer record
 313             #if sfa_peer:
 314                 #peer_dict = {'type': 'slice', 'hrn': slice_hrn,
 315                              #'peer_authority': sfa_peer, 'pointer': slice['slice_id']}
 316                 #self.registry.register_peer_object(self.credential, peer_dict)
 317         else:
 318             slice = slices[0]
 319             slice.update(slice_record)
 320             #del slice['last_updated']
 321             #del slice['date_created']
 322             if peer:
 323                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 324                 # unbind from peer so we can modify if necessary. Will bind back later
 325                 self.driver.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 326                 #Update existing record (e.g. expires field) it with the latest info.
 327             ##if slice_record and slice['expires'] != slice_record['expires']:
 328                 ##self.driver.UpdateSlice( slice['slice_id'], {'expires' : slice_record['expires']})
 329
 330         return slice
 331
 332     #def get_existing_persons(self, users):
 333     def verify_persons(self, slice_hrn, slice_record, users,  peer, sfa_peer, options={}):
 334         users_by_id = {}
 335         users_by_hrn = {}
 336         users_dict = {}
 337
 338         for user in users:
 339             if 'person_id' in user and 'hrn' in user:
 340                 users_by_id[user['person_id']] = user
 341                 users_dict[user['person_id']] = {'person_id':user['person_id'], 'hrn':user['hrn']}
 342
 343                 #hrn, type = urn_to_hrn(user['urn'])
 344                 #username = get_leaf(hrn)
 345                 #login_base = get_leaf(get_authority(user['urn']))
 346                 #user['username'] = username
 347                 #users_by_site[login_base].append(user)
 348                 users_by_hrn[user['hrn']] = user
 349                 users_dict[user['hrn']] = {'person_id':user['person_id'], 'hrn':user['hrn']}
 350
 351         existing_user_ids = []
 352         existing_users= []
 353         if users_by_hrn:
 354             # get existing users by email
 355
 356             existing_users = self.driver.GetPersons({'hrn': users_by_hrn.keys()},
 357                                                         ['hrn'])
 358             #print>>sys.stderr, " \r\n \r\n \t slices.py HEEEEEEEEY===========verify_person  existing_users %s users_dict %s user_by_id %s " %(existing_users, users_dict,users_by_id)
 359             #existing_user_ids = [(users_dict[user['hrn']]['hrn'],users_dict[user['hrn']]['person_id'] ) for user in existing_users]
 360             for user in existing_users :
 361                 for  k in users_dict[user['hrn']] :
 362                     existing_user_ids.append (users_dict[user['hrn']][k])
 363
 364             print>>sys.stderr, " \r\n \r\n slices.py verify_person   existing_user_ids %s " %(existing_user_ids)
 365         #if users_by_id:
 366             #existing_user_ids.extend([user for user in users_by_id])
 367         #if users_by_site:
 368             ## get a list of user sites (based on requeste user urns
 369             #site_list = self.driver.GetSites(users_by_site.keys(), \
 370                 #['site_id', 'login_base', 'person_ids'])
 371             #sites = {}
 372             #site_user_ids = []
 373
 374             ## get all existing users at these sites
 375             #for site in site_list:
 376                 #sites[site['site_id']] = site
 377                 #site_user_ids.extend(site['person_ids'])
 378
 379             #existing_site_persons_list = self.driver.GetPersons(site_user_ids,
 380                                                                     #['person_id', 'key_ids', 'email', 'site_ids'])
 381
 382             ## all requested users are either existing users or new (added) users
 383             #for login_base in users_by_site:
 384                 #requested_site_users = users_by_site[login_base]
 385                 #for requested_user in requested_site_users:
 386                     #user_found = False
 387                     #for existing_user in existing_site_persons_list:
 388                         #for site_id in existing_user['site_ids']:
 389                             #site = sites[site_id]
 390                             #if login_base == site['login_base'] and \
 391                                #existing_user['email'].startswith(requested_user['username']):
 392                                 #existing_user_ids.append(existing_user['email'])
 393                                 #users_dict[existing_user['email']] = requested_user
 394                                 #user_found = True
 395                                 #break
 396                         #if user_found:
 397                             #break
 398
 399                     #if user_found == False:
 400                         #fake_email = requested_user['username'] + '@geni.net'
 401                         #users_dict[fake_email] = requested_user
 402
 403
 404         # requested slice users
 405         requested_user_ids = users_dict.keys()
 406         # existing slice users
 407         existing_slice_users_filter = {'hrn': slice_record.get('PI', [])}
 408         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)
 409
 410         existing_slice_users = self.driver.GetPersons(existing_slice_users_filter,['hrn'])
 411         print>>sys.stderr, " \r\n \r\n slices.py verify_person   existing_slice_users %s " %(existing_slice_users)
 412         existing_slice_user_ids = []
 413         for user in existing_slice_users :
 414             for  k in users_dict[user['hrn']] :
 415                     existing_slice_user_ids.append (users_dict[user['hrn']][k])
 416                     #existing_slice_user_ids = [user['hrn'] for user in existing_slice_users]
 417
 418         #print>>sys.stderr, " \r\n \r\n slices.py verify_person requested_user_ids %s  existing_slice_user_ids%s " %(requested_user_ids,existing_slice_user_ids)
 419         # users to be added, removed or updated
 420         added_user_ids = set(requested_user_ids).difference(set(existing_user_ids))
 421         added_slice_user_ids = set(requested_user_ids).difference(existing_slice_user_ids)
 422         removed_user_ids = set(existing_slice_user_ids).difference(requested_user_ids)
 423         #print>>sys.stderr, " \r\n \r\n slices.py verify_persons  existing_slice_user_ids %s  requested_user_ids %s " %(existing_slice_user_ids,requested_user_ids)
 424         updated_user_ids = set(existing_slice_user_ids).intersection(requested_user_ids)
 425         #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)
 426         #print>>sys.stderr, " \r\n \r\n slices.py verify_persons  removed_user_ids %s updated_user_ids %s " %(removed_user_ids,updated_user_ids)
 427         # Remove stale users (only if we are not appending)
 428         append = options.get('append', True)
 429         if append == False:
 430             for removed_user_id in removed_user_ids:
 431                 self.driver.DeletePersonFromSlice(removed_user_id, slice_record['name'])
 432         # update_existing users
 433         updated_users_list = [user for user in existing_slice_users if user['hrn'] in \
 434           updated_user_ids]
 435         #self.verify_keys(existing_slice_users, updated_users_list, peer, append)
 436
 437         added_persons = []
 438         # add new users
 439         for added_user_id in added_user_ids:
 440             added_user = users_dict[added_user_id]
 441             #hrn, type = urn_to_hrn(added_user['urn'])
 442             person = {
 443                 #'first_name': added_user.get('first_name', hrn),
 444                 #'last_name': added_user.get('last_name', hrn),
 445                 'person_id': added_user_id,
 446                 #'peer_person_id': None,
 447                 #'keys': [],
 448                 #'key_ids': added_user.get('key_ids', []),
 449
 450             }
 451             #print>>sys.stderr, " \r\n \r\n slices.py verify_persons   added_user_ids %s " %(added_user_ids)
 452             person['person_id'] = self.driver.AddPerson(person)
 453             if peer:
 454                 person['peer_person_id'] = added_user['person_id']
 455             added_persons.append(person)
 456
 457             # enable the account
 458             self.driver.UpdatePerson(person['person_id'], {'enabled': True})
 459
 460             # add person to site
 461             #self.driver.AddPersonToSite(added_user_id, login_base)
 462
 463             #for key_string in added_user.get('keys', []):
 464                 #key = {'key':key_string, 'key_type':'ssh'}
 465                 #key['key_id'] = self.driver.AddPersonKey(person['person_id'], key)
 466                 #person['keys'].append(key)
 467
 468             # add the registry record
 469             #if sfa_peer:
 470                 #peer_dict = {'type': 'user', 'hrn': hrn, 'peer_authority': sfa_peer, \
 471                     #'pointer': person['person_id']}
 472                 #self.registry.register_peer_object(self.credential, peer_dict)
 473
 474         for added_slice_user_id in added_slice_user_ids.union(added_user_ids):
 475             # add person to the slice
 476             self.driver.AddPersonToSlice(added_slice_user_id, slice_record['name'])
 477             # if this is a peer record then it should already be bound to a peer.
 478             # no need to return worry about it getting bound later
 479
 480         return added_persons
 481
 482
 483     def verify_keys(self, persons, users, peer, append=True):
 484         # existing keys
 485         key_ids = []
 486         for person in persons:
 487             key_ids.extend(person['key_ids'])
 488         keylist = self.driver.GetKeys(key_ids, ['key_id', 'key'])
 489         keydict = {}
 490         for key in keylist:
 491             keydict[key['key']] = key['key_id']
 492         existing_keys = keydict.keys()
 493         persondict = {}
 494         for person in persons:
 495             persondict[person['email']] = person
 496
 497         # add new keys
 498         requested_keys = []
 499         updated_persons = []
 500         for user in users:
 501             user_keys = user.get('keys', [])
 502             updated_persons.append(user)
 503             for key_string in user_keys:
 504                 requested_keys.append(key_string)
 505                 if key_string not in existing_keys:
 506                     key = {'key': key_string, 'key_type': 'ssh'}
 507                     try:
 508                         if peer:
 509                             person = persondict[user['email']]
 510                             self.driver.UnBindObjectFromPeer('person', person['person_id'], peer['shortname'])
 511                         key['key_id'] = self.driver.AddPersonKey(user['email'], key)
 512                         if peer:
 513                             key_index = user_keys.index(key['key'])
 514                             remote_key_id = user['key_ids'][key_index]
 515                             self.driver.BindObjectToPeer('key', key['key_id'], peer['shortname'], remote_key_id)
 516
 517                     finally:
 518                         if peer:
 519                             self.driver.BindObjectToPeer('person', person['person_id'], peer['shortname'], user['person_id'])
 520
 521         # remove old keys (only if we are not appending)
 522         if append == False:
 523             removed_keys = set(existing_keys).difference(requested_keys)
 524             for existing_key_id in keydict:
 525                 if keydict[existing_key_id] in removed_keys:
 526                     try:
 527                         if peer:
 528                             self.driver.UnBindObjectFromPeer('key', existing_key_id, peer['shortname'])
 529                         self.driver.DeleteKey(existing_key_id)
 530                     except:
 531                         pass
 532
 533     def verify_slice_attributes(self, slice, requested_slice_attributes, append=False, admin=False):
 534         # get list of attributes users ar able to manage
 535         filter = {'category': '*slice*'}
 536         if not admin:
 537             filter['|roles'] = ['user']
 538         slice_attributes = self.driver.GetTagTypes(filter)
 539         valid_slice_attribute_names = [attribute['tagname'] for attribute in slice_attributes]
 540
 541         # get sliver attributes
 542         added_slice_attributes = []
 543         removed_slice_attributes = []
 544         ignored_slice_attribute_names = []
 545         existing_slice_attributes = self.driver.GetSliceTags({'slice_id': slice['slice_id']})
 546
 547         # get attributes that should be removed
 548         for slice_tag in existing_slice_attributes:
 549             if slice_tag['tagname'] in ignored_slice_attribute_names:
 550                 # If a slice already has a admin only role it was probably given to them by an
 551                 # admin, so we should ignore it.
 552                 ignored_slice_attribute_names.append(slice_tag['tagname'])
 553             else:
 554                 # If an existing slice attribute was not found in the request it should
 555                 # be removed
 556                 attribute_found=False
 557                 for requested_attribute in requested_slice_attributes:
 558                     if requested_attribute['name'] == slice_tag['tagname'] and \
 559                        requested_attribute['value'] == slice_tag['value']:
 560                         attribute_found=True
 561                         break
 562
 563             if not attribute_found and not append:
 564                 removed_slice_attributes.append(slice_tag)
 565
 566         # get attributes that should be added:
 567         for requested_attribute in requested_slice_attributes:
 568             # if the requested attribute wasn't found  we should add it
 569             if requested_attribute['name'] in valid_slice_attribute_names:
 570                 attribute_found = False
 571                 for existing_attribute in existing_slice_attributes:
 572                     if requested_attribute['name'] == existing_attribute['tagname'] and \
 573                        requested_attribute['value'] == existing_attribute['value']:
 574                         attribute_found=True
 575                         break
 576                 if not attribute_found:
 577                     added_slice_attributes.append(requested_attribute)
 578
 579
 580         # remove stale attributes
 581         for attribute in removed_slice_attributes:
 582             try:
 583                 self.driver.DeleteSliceTag(attribute['slice_tag_id'])
 584             except Exception, e:
 585                 self.logger.warn('Failed to remove sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 586                                 % (name, value,  node_id, str(e)))
 587
 588         # add requested_attributes
 589         for attribute in added_slice_attributes:
 590             try:
 591                 self.driver.AddSliceTag(slice['name'], attribute['name'], attribute['value'], attribute.get('node_id', None))
 592             except Exception, e:
 593                 self.logger.warn('Failed to add sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 594                                 % (name, value,  node_id, str(e)))
 595
 596     #def create_slice_aggregate(self, xrn, rspec):
 597         #hrn, type = urn_to_hrn(xrn)
 598         ## Determine if this is a peer slice
 599         #peer = self.get_peer(hrn)
 600         #sfa_peer = self.get_sfa_peer(hrn)
 601
 602         #spec = RSpec(rspec)
 603         ## Get the slice record from sfa
 604         #slicename = hrn_to_pl_slicename(hrn)
 605         #slice = {}
 606         #slice_record = None
 607         #registry = self.api.registries[self.api.hrn]
 608         #credential = self.api.getCredential()
 609
 610         #site_id, remote_site_id = self.verify_site(registry, credential, hrn, peer, sfa_peer)
 611         #slice = self.verify_slice(registry, credential, hrn, site_id, remote_site_id, peer, sfa_peer)
 612
 613         ## find out where this slice is currently running
 614         #nodelist = self.driver.GetNodes(slice['node_ids'], ['hostname'])
 615         #hostnames = [node['hostname'] for node in nodelist]
 616
 617         ## get netspec details
 618         #nodespecs = spec.getDictsByTagName('NodeSpec')
 619
 620         ## dict in which to store slice attributes to set for the nodes
 621         #nodes = {}
 622         #for nodespec in nodespecs:
 623             #if isinstance(nodespec['name'], list):
 624                 #for nodename in nodespec['name']:
 625                     #nodes[nodename] = {}
 626                     #for k in nodespec.keys():
 627                         #rspec_attribute_value = nodespec[k]
 628                         #if (self.rspec_to_slice_tag.has_key(k)):
 629                             #slice_tag_name = self.rspec_to_slice_tag[k]
 630                             #nodes[nodename][slice_tag_name] = rspec_attribute_value
 631             #elif isinstance(nodespec['name'], StringTypes):
 632                 #nodename = nodespec['name']
 633                 #nodes[nodename] = {}
 634                 #for k in nodespec.keys():
 635                     #rspec_attribute_value = nodespec[k]
 636                     #if (self.rspec_to_slice_tag.has_key(k)):
 637                         #slice_tag_name = self.rspec_to_slice_tag[k]
 638                         #nodes[nodename][slice_tag_name] = rspec_attribute_value
 639
 640                 #for k in nodespec.keys():
 641                     #rspec_attribute_value = nodespec[k]
 642                     #if (self.rspec_to_slice_tag.has_key(k)):
 643                         #slice_tag_name = self.rspec_to_slice_tag[k]
 644                         #nodes[nodename][slice_tag_name] = rspec_attribute_value
 645
 646         #node_names = nodes.keys()
 647         ## remove nodes not in rspec
 648         #deleted_nodes = list(set(hostnames).difference(node_names))
 649         ## add nodes from rspec
 650         #added_nodes = list(set(node_names).difference(hostnames))
 651
 652         #try:
 653             #if peer:
 654                 #self.driver.UnBindObjectFromPeer('slice', slice['slice_id'], peer)
 655
 656             #self.driver.AddSliceToNodes(slicename, added_nodes)
 657
 658             ## Add recognized slice tags
 659             #for node_name in node_names:
 660                 #node = nodes[node_name]
 661                 #for slice_tag in node.keys():
 662                     #value = node[slice_tag]
 663                     #if (isinstance(value, list)):
 664                         #value = value[0]
 665
 666                     #self.driver.AddSliceTag(slicename, slice_tag, value, node_name)
 667
 668             #self.driver.DeleteSliceFromNodes(slicename, deleted_nodes)
 669         #finally:
 670             #if peer:
 671                 #self.driver.BindObjectToPeer('slice', slice['slice_id'], peer, slice['peer_slice_id'])
 672
 673         #return 1
 674