sfa/planetlab/plslices.py

   1 from types import StringTypes
   2 from collections import defaultdict
   3
   4 from sfa.util.sfatime import utcparse, datetime_to_epoch
   5 from sfa.util.sfalogging import logger
   6 from sfa.util.xrn import Xrn, get_leaf, get_authority, urn_to_hrn
   7 from sfa.rspecs.rspec import RSpec
   8 from sfa.planetlab.vlink import VLink
   9 from sfa.planetlab.topology import Topology
  10 from sfa.planetlab.plxrn import PlXrn, hrn_to_pl_slicename
  11 from sfa.storage.model import SliverAllocation
  12 from sfa.storage.alchemy import dbsession
  13
  14 MAXINT =  2L**31-1
  15
  16 class PlSlices:
  17
  18     rspec_to_slice_tag = {'max_rate':'net_max_rate'}
  19
  20     def __init__(self, driver):
  21         self.driver = driver
  22
  23     def get_slivers(self, xrn, node=None):
  24         hrn, type = urn_to_hrn(xrn)
  25
  26         slice_name = hrn_to_pl_slicename(hrn)
  27         # XX Should we just call PLCAPI.GetSliceTicket(slice_name) instead
  28         # of doing all of this?
  29         #return self.driver.shell.GetSliceTicket(self.auth, slice_name)
  30
  31         # from PLCAPI.GetSlivers.get_slivers()
  32         slice_fields = ['slice_id', 'name', 'instantiation', 'expires', 'person_ids', 'slice_tag_ids']
  33         slices = self.driver.shell.GetSlices(slice_name, slice_fields)
  34         # Build up list of users and slice attributes
  35         person_ids = set()
  36         all_slice_tag_ids = set()
  37         for slice in slices:
  38             person_ids.update(slice['person_ids'])
  39             all_slice_tag_ids.update(slice['slice_tag_ids'])
  40         person_ids = list(person_ids)
  41         all_slice_tag_ids = list(all_slice_tag_ids)
  42         # Get user information
  43         all_persons_list = self.driver.shell.GetPersons({'person_id':person_ids,'enabled':True}, ['person_id', 'enabled', 'key_ids'])
  44         all_persons = {}
  45         for person in all_persons_list:
  46             all_persons[person['person_id']] = person
  47
  48         # Build up list of keys
  49         key_ids = set()
  50         for person in all_persons.values():
  51             key_ids.update(person['key_ids'])
  52         key_ids = list(key_ids)
  53         # Get user account keys
  54         all_keys_list = self.driver.shell.GetKeys(key_ids, ['key_id', 'key', 'key_type'])
  55         all_keys = {}
  56         for key in all_keys_list:
  57             all_keys[key['key_id']] = key
  58         # Get slice attributes
  59         all_slice_tags_list = self.driver.shell.GetSliceTags(all_slice_tag_ids)
  60         all_slice_tags = {}
  61         for slice_tag in all_slice_tags_list:
  62             all_slice_tags[slice_tag['slice_tag_id']] = slice_tag
  63
  64         slivers = []
  65         for slice in slices:
  66             keys = []
  67             for person_id in slice['person_ids']:
  68                 if person_id in all_persons:
  69                     person = all_persons[person_id]
  70                     if not person['enabled']:
  71                         continue
  72                     for key_id in person['key_ids']:
  73                         if key_id in all_keys:
  74                             key = all_keys[key_id]
  75                             keys += [{'key_type': key['key_type'],
  76                                     'key': key['key']}]
  77             attributes = []
  78             # All (per-node and global) attributes for this slice
  79             slice_tags = []
  80             for slice_tag_id in slice['slice_tag_ids']:
  81                 if slice_tag_id in all_slice_tags:
  82                     slice_tags.append(all_slice_tags[slice_tag_id])
  83             # Per-node sliver attributes take precedence over global
  84             # slice attributes, so set them first.
  85             # Then comes nodegroup slice attributes
  86             # Followed by global slice attributes
  87             sliver_attributes = []
  88
  89             if node is not None:
  90                 for sliver_attribute in filter(lambda a: a['node_id'] == node['node_id'], slice_tags):
  91                     sliver_attributes.append(sliver_attribute['tagname'])
  92                     attributes.append({'tagname': sliver_attribute['tagname'],
  93                                     'value': sliver_attribute['value']})
  94
  95             # set nodegroup slice attributes
  96             for slice_tag in filter(lambda a: a['nodegroup_id'] in node['nodegroup_ids'], slice_tags):
  97                 # Do not set any nodegroup slice attributes for
  98                 # which there is at least one sliver attribute
  99                 # already set.
 100                 if slice_tag not in slice_tags:
 101                     attributes.append({'tagname': slice_tag['tagname'],
 102                         'value': slice_tag['value']})
 103
 104             for slice_tag in filter(lambda a: a['node_id'] is None, slice_tags):
 105                 # Do not set any global slice attributes for
 106                 # which there is at least one sliver attribute
 107                 # already set.
 108                 if slice_tag['tagname'] not in sliver_attributes:
 109                     attributes.append({'tagname': slice_tag['tagname'],
 110                                    'value': slice_tag['value']})
 111
 112             # XXX Sanity check; though technically this should be a system invariant
 113             # checked with an assertion
 114             if slice['expires'] > MAXINT:  slice['expires']= MAXINT
 115
 116             slivers.append({
 117                 'hrn': hrn,
 118                 'name': slice['name'],
 119                 'slice_id': slice['slice_id'],
 120                 'instantiation': slice['instantiation'],
 121                 'expires': slice['expires'],
 122                 'keys': keys,
 123                 'attributes': attributes
 124             })
 125
 126         return slivers
 127
 128     def get_peer(self, xrn):
 129         hrn, type = urn_to_hrn(xrn)
 130         # Becaues of myplc federation,  we first need to determine if this
 131         # slice belongs to out local plc or a myplc peer. We will assume it
 132         # is a local site, unless we find out otherwise
 133         peer = None
 134
 135         # get this slice's authority (site)
 136         slice_authority = get_authority(hrn)
 137
 138         # get this site's authority (sfa root authority or sub authority)
 139         site_authority = get_authority(slice_authority).lower()
 140
 141         # check if we are already peered with this site_authority, if so
 142         peers = self.driver.shell.GetPeers({}, ['peer_id', 'peername', 'shortname', 'hrn_root'])
 143         for peer_record in peers:
 144             names = [name.lower() for name in peer_record.values() if isinstance(name, StringTypes)]
 145             if site_authority in names:
 146                 peer = peer_record
 147
 148         return peer
 149
 150     def get_sfa_peer(self, xrn):
 151         hrn, type = urn_to_hrn(xrn)
 152
 153         # return the authority for this hrn or None if we are the authority
 154         sfa_peer = None
 155         slice_authority = get_authority(hrn)
 156         site_authority = get_authority(slice_authority)
 157
 158         if site_authority != self.driver.hrn:
 159             sfa_peer = site_authority
 160
 161         return sfa_peer
 162
 163     def verify_slice_leases(self, slice, requested_leases, kept_leases, peer):
 164
 165         leases = self.driver.shell.GetLeases({'name':slice['name']}, ['lease_id'])
 166         grain = self.driver.shell.GetLeaseGranularity()
 167         current_leases = [lease['lease_id'] for lease in leases]
 168         deleted_leases = list(set(current_leases).difference(kept_leases))
 169
 170         try:
 171             if peer:
 172                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 173             deleted=self.driver.shell.DeleteLeases(deleted_leases)
 174             for lease in requested_leases:
 175                 added=self.driver.shell.AddLeases(lease['hostname'], slice['name'], int(lease['start_time']), int(lease['duration']) * grain + int(lease['start_time']))
 176
 177         except:
 178             logger.log_exc('Failed to add/remove slice leases')
 179
 180         return leases
 181
 182
 183     def verify_slice_nodes(self, slice, rspec_nodes, peer):
 184
 185         slivers = {}
 186         for node in rspec_nodes:
 187             hostname = node.get('component_name')
 188             client_id = node.get('client_id')
 189             component_id = node.get('component_id').strip()
 190             if hostname:
 191                 hostname = hostname.strip()
 192             elif component_id:
 193                 hostname = xrn_to_hostname(component_id)
 194             if hostname:
 195                 slivers[hostname] = {'client_id': client_id, 'component_id': component_id}
 196
 197         nodes = self.driver.shell.GetNodes(slice['node_ids'], ['node_id', 'hostname', 'interface_ids'])
 198         current_slivers = [node['hostname'] for node in nodes]
 199
 200         # remove nodes not in rspec
 201         deleted_nodes = list(set(current_slivers).difference(slivers.keys()))
 202
 203         # add nodes from rspec
 204         added_nodes = list(set(slivers.keys()).difference(current_slivers))
 205
 206         try:
 207             if peer:
 208                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 209             self.driver.shell.AddSliceToNodes(slice['name'], added_nodes)
 210             self.driver.shell.DeleteSliceFromNodes(slice['name'], deleted_nodes)
 211
 212         except:
 213             logger.log_exc('Failed to add/remove slice from nodes')
 214
 215         slices = self.driver.shell.GetSlices(slice['name'], ['node_ids'])
 216         resulting_nodes = self.driver.shell.GetNodes(slices[0]['node_ids'])
 217
 218         # update sliver allocations
 219         for node in resulting_nodes:
 220             client_id = slivers[node['hostname']]['client_id']
 221             component_id = slivers[node['hostname']]['component_id']
 222             sliver_hrn = '%s.%s-%s' % (self.driver.hrn, slice['slice_id'], node['node_id'])
 223             sliver_id = Xrn(sliver_hrn, type='sliver').urn
 224             record = SliverAllocation(sliver_id=sliver_id, client_id=client_id,
 225                                       component_id=component_id,
 226                                       allocation_state='geni_allocated')
 227             record.sync()
 228         return resulting_nodes
 229
 230     def free_egre_key(self):
 231         used = set()
 232         for tag in self.driver.shell.GetSliceTags({'tagname': 'egre_key'}):
 233                 used.add(int(tag['value']))
 234
 235         for i in range(1, 256):
 236             if i not in used:
 237                 key = i
 238                 break
 239         else:
 240             raise KeyError("No more EGRE keys available")
 241
 242         return str(key)
 243
 244     def verify_slice_links(self, slice, requested_links, nodes):
 245
 246         if not requested_links:
 247             return
 248
 249         # exit if links are not supported here
 250         topology = Topology()
 251         if not topology:
 252             return
 253
 254         # build dict of nodes
 255         nodes_dict = {}
 256         interface_ids = []
 257         for node in nodes:
 258             nodes_dict[node['node_id']] = node
 259             interface_ids.extend(node['interface_ids'])
 260         # build dict of interfaces
 261         interfaces = self.driver.shell.GetInterfaces(interface_ids)
 262         interfaces_dict = {}
 263         for interface in interfaces:
 264             interfaces_dict[interface['interface_id']] = interface
 265
 266         slice_tags = []
 267
 268         # set egre key
 269         slice_tags.append({'name': 'egre_key', 'value': self.free_egre_key()})
 270
 271         # set netns
 272         slice_tags.append({'name': 'netns', 'value': '1'})
 273
 274         # set cap_net_admin
 275         # need to update the attribute string?
 276         slice_tags.append({'name': 'capabilities', 'value': 'CAP_NET_ADMIN'})
 277
 278         for link in requested_links:
 279             # get the ip address of the first node in the link
 280             ifname1 = Xrn(link['interface1']['component_id']).get_leaf()
 281             ifname_parts = ifname1.split(':')
 282             node_raw = ifname_parts[0]
 283             device = None
 284             if len(ifname_parts) > 1:
 285                 device = ifname_parts[1]
 286             node_id = int(node_raw.replace('node', ''))
 287             node = nodes_dict[node_id]
 288             if1 = interfaces_dict[node['interface_ids'][0]]
 289             ipaddr = if1['ip']
 290             topo_rspec = VLink.get_topo_rspec(link, ipaddr)
 291             # set topo_rspec tag
 292             slice_tags.append({'name': 'topo_rspec', 'value': str([topo_rspec]), 'node_id': node_id})
 293             # set vini_topo tag
 294             slice_tags.append({'name': 'vini_topo', 'value': 'manual', 'node_id': node_id})
 295             #self.driver.shell.AddSliceTag(slice['name'], 'topo_rspec', str([topo_rspec]), node_id)
 296
 297         self.verify_slice_attributes(slice, slice_tags, {'append': True}, admin=True)
 298
 299
 300
 301     def handle_peer(self, site, slice, persons, peer):
 302         if peer:
 303             # bind site
 304             try:
 305                 if site:
 306                     self.driver.shell.BindObjectToPeer('site', site['site_id'], peer['shortname'], slice['site_id'])
 307             except Exception,e:
 308                 self.driver.shell.DeleteSite(site['site_id'])
 309                 raise e
 310
 311             # bind slice
 312             try:
 313                 if slice:
 314                     self.driver.shell.BindObjectToPeer('slice', slice['slice_id'], peer['shortname'], slice['slice_id'])
 315             except Exception,e:
 316                 self.driver.shell.DeleteSlice(slice['slice_id'])
 317                 raise e
 318
 319             # bind persons
 320             for person in persons:
 321                 try:
 322                     self.driver.shell.BindObjectToPeer('person',
 323                                                      person['person_id'], peer['shortname'], person['peer_person_id'])
 324
 325                     for (key, remote_key_id) in zip(person['keys'], person['key_ids']):
 326                         try:
 327                             self.driver.shell.BindObjectToPeer( 'key', key['key_id'], peer['shortname'], remote_key_id)
 328                         except:
 329                             self.driver.shell.DeleteKey(key['key_id'])
 330                             logger("failed to bind key: %s to peer: %s " % (key['key_id'], peer['shortname']))
 331                 except Exception,e:
 332                     self.driver.shell.DeletePerson(person['person_id'])
 333                     raise e
 334
 335         return slice
 336
 337     def verify_site(self, slice_xrn, slice_record={}, peer=None, sfa_peer=None, options={}):
 338         (slice_hrn, type) = urn_to_hrn(slice_xrn)
 339         site_hrn = get_authority(slice_hrn)
 340         # login base can't be longer than 20 characters
 341         slicename = hrn_to_pl_slicename(slice_hrn)
 342         authority_name = slicename.split('_')[0]
 343         login_base = authority_name[:20]
 344         sites = self.driver.shell.GetSites(login_base)
 345         if not sites:
 346             # create new site record
 347             site = {'name': 'geni.%s' % authority_name,
 348                     'abbreviated_name': authority_name,
 349                     'login_base': login_base,
 350                     'max_slices': 100,
 351                     'max_slivers': 1000,
 352                     'enabled': True,
 353                     'peer_site_id': None}
 354             if peer:
 355                 site['peer_site_id'] = slice_record.get('site_id', None)
 356             site['site_id'] = self.driver.shell.AddSite(site)
 357             # exempt federated sites from monitor policies
 358             self.driver.shell.AddSiteTag(site['site_id'], 'exempt_site_until', "20200101")
 359
 360 #            # is this still necessary?
 361 #            # add record to the local registry
 362 #            if sfa_peer and slice_record:
 363 #                peer_dict = {'type': 'authority', 'hrn': site_hrn, \
 364 #                             'peer_authority': sfa_peer, 'pointer': site['site_id']}
 365 #                self.registry.register_peer_object(self.credential, peer_dict)
 366         else:
 367             site =  sites[0]
 368             if peer:
 369                 # unbind from peer so we can modify if necessary. Will bind back later
 370                 self.driver.shell.UnBindObjectFromPeer('site', site['site_id'], peer['shortname'])
 371
 372         return site
 373
 374     def verify_slice(self, slice_hrn, slice_record, peer, sfa_peer, options={}):
 375         slicename = hrn_to_pl_slicename(slice_hrn)
 376         parts = slicename.split("_")
 377         login_base = parts[0]
 378         slices = self.driver.shell.GetSlices([slicename])
 379         if not slices:
 380             slice = {'name': slicename,
 381                      'url': 'No Url',
 382                      'description': 'No Description'}
 383             # add the slice
 384             slice['slice_id'] = self.driver.shell.AddSlice(slice)
 385             slice['node_ids'] = []
 386             slice['person_ids'] = []
 387             if peer and slice_record:
 388                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 389         else:
 390             slice = slices[0]
 391             if peer and slice_record:
 392                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 393                 # unbind from peer so we can modify if necessary. Will bind back later
 394                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 395                 #Update existing record (e.g. expires field) it with the latest info.
 396             if slice_record and slice_record.get('expires'):
 397                 requested_expires = int(datetime_to_epoch(utcparse(slice_record['expires'])))
 398                 if requested_expires and slice['expires'] != requested_expires:
 399                     self.driver.shell.UpdateSlice( slice['slice_id'], {'expires' : requested_expires})
 400
 401         return slice
 402
 403     #def get_existing_persons(self, users):
 404     def verify_persons(self, slice_hrn, slice_record, users, peer, sfa_peer, options={}):
 405         users_by_email = {}
 406         users_by_site = defaultdict(list)
 407         users_dict = {}
 408         for user in users:
 409             user['urn'] = user['urn'].lower()
 410             hrn, type = urn_to_hrn(user['urn'])
 411             username = get_leaf(hrn)
 412             login_base = PlXrn(xrn=user['urn']).pl_login_base()
 413             user['username'] = username
 414             user['site'] = login_base
 415
 416             if 'email' in user:
 417                 user['email'] = user['email'].lower()
 418                 users_by_email[user['email']] = user
 419                 users_dict[user['email']] = user
 420             else:
 421                 users_by_site[user['site']].append(user)
 422
 423         # start building a list of existing users
 424         existing_user_ids = []
 425         existing_user_ids_filter = []
 426         if users_by_email:
 427             existing_user_ids_filter.extend(users_by_email.keys())
 428         if users_by_site:
 429             for login_base in users_by_site:
 430                 users = users_by_site[login_base]
 431                 for user in users:
 432                     existing_user_ids_filter.append(user['username']+'@geni.net')
 433         if existing_user_ids_filter:
 434             # get existing users by email
 435             existing_users = self.driver.shell.GetPersons({'email': existing_user_ids_filter},
 436                                                         ['person_id', 'key_ids', 'email'])
 437             existing_user_ids.extend([user['email'] for user in existing_users])
 438
 439         if users_by_site:
 440             # get a list of user sites (based on requeste user urns
 441             site_list = self.driver.shell.GetSites(users_by_site.keys(), \
 442                 ['site_id', 'login_base', 'person_ids'])
 443             # get all existing users at these sites
 444             sites = {}
 445             site_user_ids = []
 446             for site in site_list:
 447                 sites[site['site_id']] = site
 448                 site_user_ids.extend(site['person_ids'])
 449
 450             existing_site_persons_list = self.driver.shell.GetPersons(site_user_ids,
 451                                                                     ['person_id', 'key_ids', 'email', 'site_ids'])
 452
 453             # all requested users are either existing users or new (added) users
 454             for login_base in users_by_site:
 455                 requested_site_users = users_by_site[login_base]
 456                 for requested_user in requested_site_users:
 457                     user_found = False
 458                     for existing_user in existing_site_persons_list:
 459                         for site_id in existing_user['site_ids']:
 460                             if site_id in sites:
 461                                 site = sites[site_id]
 462                                 if login_base == site['login_base'] and \
 463                                    existing_user['email'].startswith(requested_user['username']+'@'):
 464                                     existing_user_ids.append(existing_user['email'])
 465                                     requested_user['email'] = existing_user['email']
 466                                     users_dict[existing_user['email']] = requested_user
 467                                     user_found = True
 468                                     break
 469                         if user_found:
 470                             break
 471
 472                     if user_found == False:
 473                         fake_email = requested_user['username'] + '@geni.net'
 474                         requested_user['email'] = fake_email
 475                         users_dict[fake_email] = requested_user
 476
 477         # requested slice users
 478         requested_user_ids = users_dict.keys()
 479         # existing slice users
 480         existing_slice_users_filter = {'person_id': slice_record.get('person_ids', [])}
 481         existing_slice_users = self.driver.shell.GetPersons(existing_slice_users_filter,
 482                                                           ['person_id', 'key_ids', 'email'])
 483         existing_slice_user_ids = [user['email'] for user in existing_slice_users]
 484
 485         # users to be added, removed or updated
 486         added_user_ids = set(requested_user_ids).difference(existing_user_ids)
 487         added_slice_user_ids = set(requested_user_ids).difference(existing_slice_user_ids)
 488         removed_user_ids = set(existing_slice_user_ids).difference(requested_user_ids)
 489         updated_user_ids = set(existing_slice_user_ids).intersection(requested_user_ids)
 490
 491         # Remove stale users (only if we are not appending).
 492         # Append by default.
 493         append = options.get('append', True)
 494         if append == False:
 495             for removed_user_id in removed_user_ids:
 496                 self.driver.shell.DeletePersonFromSlice(removed_user_id, slice_record['name'])
 497         # update_existing users
 498         updated_users_list = [user for user in users_dict.values() if user['email'] in \
 499           updated_user_ids]
 500         self.verify_keys(existing_slice_users, updated_users_list, peer, options)
 501
 502         added_persons = []
 503         # add new users
 504         for added_user_id in added_user_ids:
 505             added_user = users_dict[added_user_id]
 506             hrn, type = urn_to_hrn(added_user['urn'])
 507             person = {
 508                 'first_name': added_user.get('first_name', hrn),
 509                 'last_name': added_user.get('last_name', hrn),
 510                 'email': added_user_id,
 511                 'peer_person_id': None,
 512                 'keys': [],
 513                 'key_ids': added_user.get('key_ids', []),
 514             }
 515             person['person_id'] = self.driver.shell.AddPerson(person)
 516             if peer:
 517                 person['peer_person_id'] = added_user['person_id']
 518             added_persons.append(person)
 519
 520             # enable the account
 521             self.driver.shell.UpdatePerson(person['person_id'], {'enabled': True})
 522
 523             # add person to site
 524             self.driver.shell.AddPersonToSite(added_user_id, added_user['site'])
 525
 526             for key_string in added_user.get('keys', []):
 527                 key = {'key':key_string, 'key_type':'ssh'}
 528                 key['key_id'] = self.driver.shell.AddPersonKey(person['person_id'], key)
 529                 person['keys'].append(key)
 530
 531             # add the registry record
 532 #            if sfa_peer:
 533 #                peer_dict = {'type': 'user', 'hrn': hrn, 'peer_authority': sfa_peer, \
 534 #                    'pointer': person['person_id']}
 535 #                self.registry.register_peer_object(self.credential, peer_dict)
 536
 537         for added_slice_user_id in added_slice_user_ids.union(added_user_ids):
 538             # add person to the slice
 539             self.driver.shell.AddPersonToSlice(added_slice_user_id, slice_record['name'])
 540             # if this is a peer record then it should already be bound to a peer.
 541             # no need to return worry about it getting bound later
 542
 543         return added_persons
 544
 545
 546     def verify_keys(self, persons, users, peer, options={}):
 547         # existing keys
 548         key_ids = []
 549         for person in persons:
 550             key_ids.extend(person['key_ids'])
 551         keylist = self.driver.shell.GetKeys(key_ids, ['key_id', 'key'])
 552         keydict = {}
 553         for key in keylist:
 554             keydict[key['key']] = key['key_id']
 555         existing_keys = keydict.keys()
 556         persondict = {}
 557         for person in persons:
 558             persondict[person['email']] = person
 559
 560         # add new keys
 561         requested_keys = []
 562         updated_persons = []
 563         for user in users:
 564             user_keys = user.get('keys', [])
 565             updated_persons.append(user)
 566             for key_string in user_keys:
 567                 requested_keys.append(key_string)
 568                 if key_string not in existing_keys:
 569                     key = {'key': key_string, 'key_type': 'ssh'}
 570                     try:
 571                         if peer:
 572                             person = persondict[user['email']]
 573                             self.driver.shell.UnBindObjectFromPeer('person', person['person_id'], peer['shortname'])
 574                         key['key_id'] = self.driver.shell.AddPersonKey(user['email'], key)
 575                         if peer:
 576                             key_index = user_keys.index(key['key'])
 577                             remote_key_id = user['key_ids'][key_index]
 578                             self.driver.shell.BindObjectToPeer('key', key['key_id'], peer['shortname'], remote_key_id)
 579
 580                     finally:
 581                         if peer:
 582                             self.driver.shell.BindObjectToPeer('person', person['person_id'], peer['shortname'], user['person_id'])
 583
 584         # remove old keys (only if we are not appending)
 585         append = options.get('append', True)
 586         if append == False:
 587             removed_keys = set(existing_keys).difference(requested_keys)
 588             for existing_key_id in keydict:
 589                 if keydict[existing_key_id] in removed_keys:
 590                     try:
 591                         if peer:
 592                             self.driver.shell.UnBindObjectFromPeer('key', existing_key_id, peer['shortname'])
 593                         self.driver.shell.DeleteKey(existing_key_id)
 594                     except:
 595                         pass
 596
 597     def verify_slice_attributes(self, slice, requested_slice_attributes, options={}, admin=False):
 598         append = options.get('append', True)
 599         # get list of attributes users ar able to manage
 600         filter = {'category': '*slice*'}
 601         if not admin:
 602             filter['|roles'] = ['user']
 603         slice_attributes = self.driver.shell.GetTagTypes(filter)
 604         valid_slice_attribute_names = [attribute['tagname'] for attribute in slice_attributes]
 605
 606         # get sliver attributes
 607         added_slice_attributes = []
 608         removed_slice_attributes = []
 609         ignored_slice_attribute_names = []
 610         existing_slice_attributes = self.driver.shell.GetSliceTags({'slice_id': slice['slice_id']})
 611
 612         # get attributes that should be removed
 613         for slice_tag in existing_slice_attributes:
 614             if slice_tag['tagname'] in ignored_slice_attribute_names:
 615                 # If a slice already has a admin only role 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 found in the request it should
 620                 # be removed
 621                 attribute_found=False
 622                 for requested_attribute in requested_slice_attributes:
 623                     if requested_attribute['name'] == slice_tag['tagname'] and \
 624                        requested_attribute['value'] == slice_tag['value']:
 625                         attribute_found=True
 626                         break
 627
 628             if not attribute_found and not append:
 629                 removed_slice_attributes.append(slice_tag)
 630
 631         # get attributes that should be added:
 632         for requested_attribute in requested_slice_attributes:
 633             # if the requested attribute wasn't found  we should add it
 634             if requested_attribute['name'] in valid_slice_attribute_names:
 635                 attribute_found = False
 636                 for existing_attribute in existing_slice_attributes:
 637                     if requested_attribute['name'] == existing_attribute['tagname'] and \
 638                        requested_attribute['value'] == existing_attribute['value']:
 639                         attribute_found=True
 640                         break
 641                 if not attribute_found:
 642                     added_slice_attributes.append(requested_attribute)
 643
 644
 645         # remove stale attributes
 646         for attribute in removed_slice_attributes:
 647             try:
 648                 self.driver.shell.DeleteSliceTag(attribute['slice_tag_id'])
 649             except Exception, e:
 650                 logger.warn('Failed to remove sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 651                                 % (slice['name'], attribute['value'],  attribute.get('node_id'), str(e)))
 652
 653         # add requested_attributes
 654         for attribute in added_slice_attributes:
 655             try:
 656                 self.driver.shell.AddSliceTag(slice['name'], attribute['name'], attribute['value'], attribute.get('node_id', None))
 657             except Exception, e:
 658                 logger.warn('Failed to add sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 659                                 % (slice['name'], attribute['value'],  attribute.get('node_id'), str(e)))
 660