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_urn, 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                                       slice_urn = slice_urn,
 227                                       allocation_state='geni_allocated')
 228             record.sync()
 229         return resulting_nodes
 230
 231     def free_egre_key(self):
 232         used = set()
 233         for tag in self.driver.shell.GetSliceTags({'tagname': 'egre_key'}):
 234                 used.add(int(tag['value']))
 235
 236         for i in range(1, 256):
 237             if i not in used:
 238                 key = i
 239                 break
 240         else:
 241             raise KeyError("No more EGRE keys available")
 242
 243         return str(key)
 244
 245     def verify_slice_links(self, slice, requested_links, nodes):
 246
 247         if not requested_links:
 248             return
 249
 250         # exit if links are not supported here
 251         topology = Topology()
 252         if not topology:
 253             return
 254
 255         # build dict of nodes
 256         nodes_dict = {}
 257         interface_ids = []
 258         for node in nodes:
 259             nodes_dict[node['node_id']] = node
 260             interface_ids.extend(node['interface_ids'])
 261         # build dict of interfaces
 262         interfaces = self.driver.shell.GetInterfaces(interface_ids)
 263         interfaces_dict = {}
 264         for interface in interfaces:
 265             interfaces_dict[interface['interface_id']] = interface
 266
 267         slice_tags = []
 268
 269         # set egre key
 270         slice_tags.append({'name': 'egre_key', 'value': self.free_egre_key()})
 271
 272         # set netns
 273         slice_tags.append({'name': 'netns', 'value': '1'})
 274
 275         # set cap_net_admin
 276         # need to update the attribute string?
 277         slice_tags.append({'name': 'capabilities', 'value': 'CAP_NET_ADMIN'})
 278
 279         for link in requested_links:
 280             # get the ip address of the first node in the link
 281             ifname1 = Xrn(link['interface1']['component_id']).get_leaf()
 282             ifname_parts = ifname1.split(':')
 283             node_raw = ifname_parts[0]
 284             device = None
 285             if len(ifname_parts) > 1:
 286                 device = ifname_parts[1]
 287             node_id = int(node_raw.replace('node', ''))
 288             node = nodes_dict[node_id]
 289             if1 = interfaces_dict[node['interface_ids'][0]]
 290             ipaddr = if1['ip']
 291             topo_rspec = VLink.get_topo_rspec(link, ipaddr)
 292             # set topo_rspec tag
 293             slice_tags.append({'name': 'topo_rspec', 'value': str([topo_rspec]), 'node_id': node_id})
 294             # set vini_topo tag
 295             slice_tags.append({'name': 'vini_topo', 'value': 'manual', 'node_id': node_id})
 296             #self.driver.shell.AddSliceTag(slice['name'], 'topo_rspec', str([topo_rspec]), node_id)
 297
 298         self.verify_slice_attributes(slice, slice_tags, {'append': True}, admin=True)
 299
 300
 301
 302     def handle_peer(self, site, slice, persons, peer):
 303         if peer:
 304             # bind site
 305             try:
 306                 if site:
 307                     self.driver.shell.BindObjectToPeer('site', site['site_id'], peer['shortname'], slice['site_id'])
 308             except Exception,e:
 309                 self.driver.shell.DeleteSite(site['site_id'])
 310                 raise e
 311
 312             # bind slice
 313             try:
 314                 if slice:
 315                     self.driver.shell.BindObjectToPeer('slice', slice['slice_id'], peer['shortname'], slice['slice_id'])
 316             except Exception,e:
 317                 self.driver.shell.DeleteSlice(slice['slice_id'])
 318                 raise e
 319
 320             # bind persons
 321             for person in persons:
 322                 try:
 323                     self.driver.shell.BindObjectToPeer('person',
 324                                                      person['person_id'], peer['shortname'], person['peer_person_id'])
 325
 326                     for (key, remote_key_id) in zip(person['keys'], person['key_ids']):
 327                         try:
 328                             self.driver.shell.BindObjectToPeer( 'key', key['key_id'], peer['shortname'], remote_key_id)
 329                         except:
 330                             self.driver.shell.DeleteKey(key['key_id'])
 331                             logger("failed to bind key: %s to peer: %s " % (key['key_id'], peer['shortname']))
 332                 except Exception,e:
 333                     self.driver.shell.DeletePerson(person['person_id'])
 334                     raise e
 335
 336         return slice
 337
 338     def verify_site(self, slice_xrn, slice_record={}, peer=None, sfa_peer=None, options={}):
 339         (slice_hrn, type) = urn_to_hrn(slice_xrn)
 340         site_hrn = get_authority(slice_hrn)
 341         # login base can't be longer than 20 characters
 342         slicename = hrn_to_pl_slicename(slice_hrn)
 343         authority_name = slicename.split('_')[0]
 344         login_base = authority_name[:20]
 345         sites = self.driver.shell.GetSites(login_base)
 346         if not sites:
 347             # create new site record
 348             site = {'name': 'geni.%s' % authority_name,
 349                     'abbreviated_name': authority_name,
 350                     'login_base': login_base,
 351                     'max_slices': 100,
 352                     'max_slivers': 1000,
 353                     'enabled': True,
 354                     'peer_site_id': None}
 355             if peer:
 356                 site['peer_site_id'] = slice_record.get('site_id', None)
 357             site['site_id'] = self.driver.shell.AddSite(site)
 358             # exempt federated sites from monitor policies
 359             self.driver.shell.AddSiteTag(site['site_id'], 'exempt_site_until', "20200101")
 360
 361 #            # is this still necessary?
 362 #            # add record to the local registry
 363 #            if sfa_peer and slice_record:
 364 #                peer_dict = {'type': 'authority', 'hrn': site_hrn, \
 365 #                             'peer_authority': sfa_peer, 'pointer': site['site_id']}
 366 #                self.registry.register_peer_object(self.credential, peer_dict)
 367         else:
 368             site =  sites[0]
 369             if peer:
 370                 # unbind from peer so we can modify if necessary. Will bind back later
 371                 self.driver.shell.UnBindObjectFromPeer('site', site['site_id'], peer['shortname'])
 372
 373         return site
 374
 375     def verify_slice(self, slice_hrn, slice_record, peer, sfa_peer, expiration, options={}):
 376         slicename = hrn_to_pl_slicename(slice_hrn)
 377         parts = slicename.split("_")
 378         login_base = parts[0]
 379         slices = self.driver.shell.GetSlices([slicename])
 380         expires = int(datetime_to_epoch(utcparse(expiration)))
 381         if not slices:
 382             slice = {'name': slicename,
 383                      'url': 'No Url',
 384                      'description': 'No Description'}
 385             # add the slice
 386             slice['slice_id'] = self.driver.shell.AddSlice(slice)
 387             slice['node_ids'] = []
 388             slice['person_ids'] = []
 389             if peer and slice_record:
 390                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 391             # set the expiration
 392             self.driver.shell.UpdateSlice(slice['slice_id'], {'expires': expires})
 393         else:
 394             slice = slices[0]
 395             if peer and slice_record:
 396                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 397                 # unbind from peer so we can modify if necessary. Will bind back later
 398                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 399
 400                 #Update expiration if necessary
 401             if slice['expires'] != expires:
 402                 self.driver.shell.UpdateSlice( slice['slice_id'], {'expires' : expires})
 403
 404         return slice
 405
 406     #def get_existing_persons(self, users):
 407     def verify_persons(self, slice_hrn, slice_record, users, peer, sfa_peer, options={}):
 408         users_by_email = {}
 409         users_by_site = defaultdict(list)
 410         users_dict = {}
 411         for user in users:
 412             user['urn'] = user['urn'].lower()
 413             hrn, type = urn_to_hrn(user['urn'])
 414             username = get_leaf(hrn)
 415             login_base = PlXrn(xrn=user['urn']).pl_login_base()
 416             user['username'] = username
 417             user['site'] = login_base
 418
 419             if 'email' in user:
 420                 user['email'] = user['email'].lower()
 421                 users_by_email[user['email']] = user
 422                 users_dict[user['email']] = user
 423             else:
 424                 users_by_site[user['site']].append(user)
 425
 426         # start building a list of existing users
 427         existing_user_ids = []
 428         existing_user_ids_filter = []
 429         if users_by_email:
 430             existing_user_ids_filter.extend(users_by_email.keys())
 431         if users_by_site:
 432             for login_base in users_by_site:
 433                 users = users_by_site[login_base]
 434                 for user in users:
 435                     existing_user_ids_filter.append(user['username']+'@geni.net')
 436         if existing_user_ids_filter:
 437             # get existing users by email
 438             existing_users = self.driver.shell.GetPersons({'email': existing_user_ids_filter},
 439                                                         ['person_id', 'key_ids', 'email'])
 440             existing_user_ids.extend([user['email'] for user in existing_users])
 441
 442         if users_by_site:
 443             # get a list of user sites (based on requeste user urns
 444             site_list = self.driver.shell.GetSites(users_by_site.keys(), \
 445                 ['site_id', 'login_base', 'person_ids'])
 446             # get all existing users at these sites
 447             sites = {}
 448             site_user_ids = []
 449             for site in site_list:
 450                 sites[site['site_id']] = site
 451                 site_user_ids.extend(site['person_ids'])
 452
 453             existing_site_persons_list = self.driver.shell.GetPersons(site_user_ids,
 454                                                                     ['person_id', 'key_ids', 'email', 'site_ids'])
 455
 456             # all requested users are either existing users or new (added) users
 457             for login_base in users_by_site:
 458                 requested_site_users = users_by_site[login_base]
 459                 for requested_user in requested_site_users:
 460                     user_found = False
 461                     for existing_user in existing_site_persons_list:
 462                         for site_id in existing_user['site_ids']:
 463                             if site_id in sites:
 464                                 site = sites[site_id]
 465                                 if login_base == site['login_base'] and \
 466                                    existing_user['email'].startswith(requested_user['username']+'@'):
 467                                     existing_user_ids.append(existing_user['email'])
 468                                     requested_user['email'] = existing_user['email']
 469                                     users_dict[existing_user['email']] = requested_user
 470                                     user_found = True
 471                                     break
 472                         if user_found:
 473                             break
 474
 475                     if user_found == False:
 476                         fake_email = requested_user['username'] + '@geni.net'
 477                         requested_user['email'] = fake_email
 478                         users_dict[fake_email] = requested_user
 479
 480         # requested slice users
 481         requested_user_ids = users_dict.keys()
 482         # existing slice users
 483         existing_slice_users_filter = {'person_id': slice_record.get('person_ids', [])}
 484         existing_slice_users = self.driver.shell.GetPersons(existing_slice_users_filter,
 485                                                           ['person_id', 'key_ids', 'email'])
 486         existing_slice_user_ids = [user['email'] for user in existing_slice_users]
 487
 488         # users to be added, removed or updated
 489         added_user_ids = set(requested_user_ids).difference(existing_user_ids)
 490         added_slice_user_ids = set(requested_user_ids).difference(existing_slice_user_ids)
 491         removed_user_ids = set(existing_slice_user_ids).difference(requested_user_ids)
 492         updated_user_ids = set(existing_slice_user_ids).intersection(requested_user_ids)
 493
 494         # Remove stale users (only if we are not appending).
 495         # Append by default.
 496         append = options.get('append', True)
 497         if append == False:
 498             for removed_user_id in removed_user_ids:
 499                 self.driver.shell.DeletePersonFromSlice(removed_user_id, slice_record['name'])
 500         # update_existing users
 501         updated_users_list = [user for user in users_dict.values() if user['email'] in \
 502           updated_user_ids]
 503         self.verify_keys(existing_slice_users, updated_users_list, peer, options)
 504
 505         added_persons = []
 506         # add new users
 507         for added_user_id in added_user_ids:
 508             added_user = users_dict[added_user_id]
 509             hrn, type = urn_to_hrn(added_user['urn'])
 510             person = {
 511                 'first_name': added_user.get('first_name', hrn),
 512                 'last_name': added_user.get('last_name', hrn),
 513                 'email': added_user_id,
 514                 'peer_person_id': None,
 515                 'keys': [],
 516                 'key_ids': added_user.get('key_ids', []),
 517             }
 518             person['person_id'] = self.driver.shell.AddPerson(person)
 519             if peer:
 520                 person['peer_person_id'] = added_user['person_id']
 521             added_persons.append(person)
 522
 523             # enable the account
 524             self.driver.shell.UpdatePerson(person['person_id'], {'enabled': True})
 525
 526             # add person to site
 527             self.driver.shell.AddPersonToSite(added_user_id, added_user['site'])
 528
 529             for key_string in added_user.get('keys', []):
 530                 key = {'key':key_string, 'key_type':'ssh'}
 531                 key['key_id'] = self.driver.shell.AddPersonKey(person['person_id'], key)
 532                 person['keys'].append(key)
 533
 534             # add the registry record
 535 #            if sfa_peer:
 536 #                peer_dict = {'type': 'user', 'hrn': hrn, 'peer_authority': sfa_peer, \
 537 #                    'pointer': person['person_id']}
 538 #                self.registry.register_peer_object(self.credential, peer_dict)
 539
 540         for added_slice_user_id in added_slice_user_ids.union(added_user_ids):
 541             # add person to the slice
 542             self.driver.shell.AddPersonToSlice(added_slice_user_id, slice_record['name'])
 543             # if this is a peer record then it should already be bound to a peer.
 544             # no need to return worry about it getting bound later
 545
 546         return added_persons
 547
 548
 549     def verify_keys(self, persons, users, peer, options={}):
 550         # existing keys
 551         key_ids = []
 552         for person in persons:
 553             key_ids.extend(person['key_ids'])
 554         keylist = self.driver.shell.GetKeys(key_ids, ['key_id', 'key'])
 555         keydict = {}
 556         for key in keylist:
 557             keydict[key['key']] = key['key_id']
 558         existing_keys = keydict.keys()
 559         persondict = {}
 560         for person in persons:
 561             persondict[person['email']] = person
 562
 563         # add new keys
 564         requested_keys = []
 565         updated_persons = []
 566         for user in users:
 567             user_keys = user.get('keys', [])
 568             updated_persons.append(user)
 569             for key_string in user_keys:
 570                 requested_keys.append(key_string)
 571                 if key_string not in existing_keys:
 572                     key = {'key': key_string, 'key_type': 'ssh'}
 573                     try:
 574                         if peer:
 575                             person = persondict[user['email']]
 576                             self.driver.shell.UnBindObjectFromPeer('person', person['person_id'], peer['shortname'])
 577                         key['key_id'] = self.driver.shell.AddPersonKey(user['email'], key)
 578                         if peer:
 579                             key_index = user_keys.index(key['key'])
 580                             remote_key_id = user['key_ids'][key_index]
 581                             self.driver.shell.BindObjectToPeer('key', key['key_id'], peer['shortname'], remote_key_id)
 582
 583                     finally:
 584                         if peer:
 585                             self.driver.shell.BindObjectToPeer('person', person['person_id'], peer['shortname'], user['person_id'])
 586
 587         # remove old keys (only if we are not appending)
 588         append = options.get('append', True)
 589         if append == False:
 590             removed_keys = set(existing_keys).difference(requested_keys)
 591             for existing_key_id in keydict:
 592                 if keydict[existing_key_id] in removed_keys:
 593                     try:
 594                         if peer:
 595                             self.driver.shell.UnBindObjectFromPeer('key', existing_key_id, peer['shortname'])
 596                         self.driver.shell.DeleteKey(existing_key_id)
 597                     except:
 598                         pass
 599
 600     def verify_slice_attributes(self, slice, requested_slice_attributes, options={}, admin=False):
 601         append = options.get('append', True)
 602         # get list of attributes users ar able to manage
 603         filter = {'category': '*slice*'}
 604         if not admin:
 605             filter['|roles'] = ['user']
 606         slice_attributes = self.driver.shell.GetTagTypes(filter)
 607         valid_slice_attribute_names = [attribute['tagname'] for attribute in slice_attributes]
 608
 609         # get sliver attributes
 610         added_slice_attributes = []
 611         removed_slice_attributes = []
 612         ignored_slice_attribute_names = []
 613         existing_slice_attributes = self.driver.shell.GetSliceTags({'slice_id': slice['slice_id']})
 614
 615         # get attributes that should be removed
 616         for slice_tag in existing_slice_attributes:
 617             if slice_tag['tagname'] in ignored_slice_attribute_names:
 618                 # If a slice already has a admin only role it was probably given to them by an
 619                 # admin, so we should ignore it.
 620                 ignored_slice_attribute_names.append(slice_tag['tagname'])
 621             else:
 622                 # If an existing slice attribute was not found in the request it should
 623                 # be removed
 624                 attribute_found=False
 625                 for requested_attribute in requested_slice_attributes:
 626                     if requested_attribute['name'] == slice_tag['tagname'] and \
 627                        requested_attribute['value'] == slice_tag['value']:
 628                         attribute_found=True
 629                         break
 630
 631             if not attribute_found and not append:
 632                 removed_slice_attributes.append(slice_tag)
 633
 634         # get attributes that should be added:
 635         for requested_attribute in requested_slice_attributes:
 636             # if the requested attribute wasn't found  we should add it
 637             if requested_attribute['name'] in valid_slice_attribute_names:
 638                 attribute_found = False
 639                 for existing_attribute in existing_slice_attributes:
 640                     if requested_attribute['name'] == existing_attribute['tagname'] and \
 641                        requested_attribute['value'] == 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.shell.DeleteSliceTag(attribute['slice_tag_id'])
 652             except Exception, e:
 653                 logger.warn('Failed to remove sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 654                                 % (slice['name'], attribute['value'],  attribute.get('node_id'), str(e)))
 655
 656         # add requested_attributes
 657         for attribute in added_slice_attributes:
 658             try:
 659                 self.driver.shell.AddSliceTag(slice['name'], attribute['name'], attribute['value'], attribute.get('node_id', None))
 660             except Exception, e:
 661                 logger.warn('Failed to add sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 662                                 % (slice['name'], attribute['value'],  attribute.get('node_id'), str(e)))
 663