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, rspec_requested_leases, peer):
 164
 165         leases = self.driver.shell.GetLeases({'name':slice['name'], 'clip':int(time.time())}, ['lease_id','name', 'hostname', 't_from', 't_until'])
 166         grain = self.driver.shell.GetLeaseGranularity()
 167
 168         requested_leases = []
 169         for lease in rspec_requested_leases:
 170              requested_lease = {}
 171              slice_name = hrn_to_pl_slicename(lease['slice_id'])
 172              if slice_name != slice['name']:
 173                  continue
 174              elif Xrn(lease['component_id']).get_authority_urn().split(':')[0] != self.driver.hrn:
 175                  continue
 176
 177              hostname = xrn_to_hostname(lease['component_id'])
 178              # fill the requested node with nitos ids
 179              requested_lease['name'] = slice['name']
 180              requested_lease['hostname'] = hostname
 181              requested_lease['t_from'] = int(lease['start_time'])
 182              requested_lease['t_until'] = int(lease['duration']) * grain + int(lease['start_time'])
 183              requested_leases.append(requested_lease)
 184
 185
 186
 187         # prepare actual slice leases by lease_id
 188         leases_by_id = {}
 189         for lease in leases:
 190              leases_by_id[lease['lease_id']] = {'name': lease['name'], 'hostname': lease['hostname'], \
 191                                                 't_from': lease['t_from'], 't_until': lease['t_until']}
 192
 193         added_leases = []
 194         kept_leases_id = []
 195         deleted_leases_id = []
 196         for lease_id in leases_by_id:
 197              if leases_by_id[lease_id] not in requested_leases:
 198                  deleted_leases_id.append(lease_id)
 199              else:
 200                  kept_leases_id.append(lease_id)
 201                  requested_leases.remove(leases_by_id[lease_id])
 202         added_leases = requested_leases
 203
 204
 205         try:
 206             if peer:
 207                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 208             self.driver.shell.DeleteLeases(deleted_leases_id)
 209             for lease in added_leases:
 210                 self.driver.shell.AddLeases(lease['hostname'], slice['name'], lease['t_from'], lease['t_until'])
 211
 212         except:
 213             logger.log_exc('Failed to add/remove slice leases')
 214
 215         return leases
 216
 217
 218     def verify_slice_nodes(self, slice_urn, slice, rspec_nodes, peer):
 219
 220         slivers = {}
 221         for node in rspec_nodes:
 222             hostname = node.get('component_name')
 223             client_id = node.get('client_id')
 224             component_id = node.get('component_id').strip()
 225             if hostname:
 226                 hostname = hostname.strip()
 227             elif component_id:
 228                 hostname = xrn_to_hostname(component_id)
 229             if hostname:
 230                 slivers[hostname] = {'client_id': client_id, 'component_id': component_id}
 231
 232         nodes = self.driver.shell.GetNodes(slice['node_ids'], ['node_id', 'hostname', 'interface_ids'])
 233         current_slivers = [node['hostname'] for node in nodes]
 234
 235         # remove nodes not in rspec
 236         deleted_nodes = list(set(current_slivers).difference(slivers.keys()))
 237
 238         # add nodes from rspec
 239         added_nodes = list(set(slivers.keys()).difference(current_slivers))
 240
 241         try:
 242             if peer:
 243                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 244             self.driver.shell.AddSliceToNodes(slice['name'], added_nodes)
 245             self.driver.shell.DeleteSliceFromNodes(slice['name'], deleted_nodes)
 246
 247         except:
 248             logger.log_exc('Failed to add/remove slice from nodes')
 249
 250         slices = self.driver.shell.GetSlices(slice['name'], ['node_ids'])
 251         resulting_nodes = self.driver.shell.GetNodes(slices[0]['node_ids'])
 252
 253         # update sliver allocations
 254         for node in resulting_nodes:
 255             client_id = slivers[node['hostname']]['client_id']
 256             component_id = slivers[node['hostname']]['component_id']
 257             sliver_hrn = '%s.%s-%s' % (self.driver.hrn, slice['slice_id'], node['node_id'])
 258             sliver_id = Xrn(sliver_hrn, type='sliver').urn
 259             record = SliverAllocation(sliver_id=sliver_id, client_id=client_id,
 260                                       component_id=component_id,
 261                                       slice_urn = slice_urn,
 262                                       allocation_state='geni_allocated')
 263             record.sync()
 264         return resulting_nodes
 265
 266     def free_egre_key(self):
 267         used = set()
 268         for tag in self.driver.shell.GetSliceTags({'tagname': 'egre_key'}):
 269                 used.add(int(tag['value']))
 270
 271         for i in range(1, 256):
 272             if i not in used:
 273                 key = i
 274                 break
 275         else:
 276             raise KeyError("No more EGRE keys available")
 277
 278         return str(key)
 279
 280     def verify_slice_links(self, slice, requested_links, nodes):
 281
 282         if not requested_links:
 283             return
 284
 285         # exit if links are not supported here
 286         topology = Topology()
 287         if not topology:
 288             return
 289
 290         # build dict of nodes
 291         nodes_dict = {}
 292         interface_ids = []
 293         for node in nodes:
 294             nodes_dict[node['node_id']] = node
 295             interface_ids.extend(node['interface_ids'])
 296         # build dict of interfaces
 297         interfaces = self.driver.shell.GetInterfaces(interface_ids)
 298         interfaces_dict = {}
 299         for interface in interfaces:
 300             interfaces_dict[interface['interface_id']] = interface
 301
 302         slice_tags = []
 303
 304         # set egre key
 305         slice_tags.append({'name': 'egre_key', 'value': self.free_egre_key()})
 306
 307         # set netns
 308         slice_tags.append({'name': 'netns', 'value': '1'})
 309
 310         # set cap_net_admin
 311         # need to update the attribute string?
 312         slice_tags.append({'name': 'capabilities', 'value': 'CAP_NET_ADMIN'})
 313
 314         for link in requested_links:
 315             # get the ip address of the first node in the link
 316             ifname1 = Xrn(link['interface1']['component_id']).get_leaf()
 317             ifname_parts = ifname1.split(':')
 318             node_raw = ifname_parts[0]
 319             device = None
 320             if len(ifname_parts) > 1:
 321                 device = ifname_parts[1]
 322             node_id = int(node_raw.replace('node', ''))
 323             node = nodes_dict[node_id]
 324             if1 = interfaces_dict[node['interface_ids'][0]]
 325             ipaddr = if1['ip']
 326             topo_rspec = VLink.get_topo_rspec(link, ipaddr)
 327             # set topo_rspec tag
 328             slice_tags.append({'name': 'topo_rspec', 'value': str([topo_rspec]), 'node_id': node_id})
 329             # set vini_topo tag
 330             slice_tags.append({'name': 'vini_topo', 'value': 'manual', 'node_id': node_id})
 331             #self.driver.shell.AddSliceTag(slice['name'], 'topo_rspec', str([topo_rspec]), node_id)
 332
 333         self.verify_slice_attributes(slice, slice_tags, {'append': True}, admin=True)
 334
 335
 336
 337     def handle_peer(self, site, slice, persons, peer):
 338         if peer:
 339             # bind site
 340             try:
 341                 if site:
 342                     self.driver.shell.BindObjectToPeer('site', site['site_id'], peer['shortname'], slice['site_id'])
 343             except Exception,e:
 344                 self.driver.shell.DeleteSite(site['site_id'])
 345                 raise e
 346
 347             # bind slice
 348             try:
 349                 if slice:
 350                     self.driver.shell.BindObjectToPeer('slice', slice['slice_id'], peer['shortname'], slice['slice_id'])
 351             except Exception,e:
 352                 self.driver.shell.DeleteSlice(slice['slice_id'])
 353                 raise e
 354
 355             # bind persons
 356             for person in persons:
 357                 try:
 358                     self.driver.shell.BindObjectToPeer('person',
 359                                                      person['person_id'], peer['shortname'], person['peer_person_id'])
 360
 361                     for (key, remote_key_id) in zip(person['keys'], person['key_ids']):
 362                         try:
 363                             self.driver.shell.BindObjectToPeer( 'key', key['key_id'], peer['shortname'], remote_key_id)
 364                         except:
 365                             self.driver.shell.DeleteKey(key['key_id'])
 366                             logger("failed to bind key: %s to peer: %s " % (key['key_id'], peer['shortname']))
 367                 except Exception,e:
 368                     self.driver.shell.DeletePerson(person['person_id'])
 369                     raise e
 370
 371         return slice
 372
 373     def verify_site(self, slice_xrn, slice_record={}, peer=None, sfa_peer=None, options={}):
 374         (slice_hrn, type) = urn_to_hrn(slice_xrn)
 375         site_hrn = get_authority(slice_hrn)
 376         # login base can't be longer than 20 characters
 377         slicename = hrn_to_pl_slicename(slice_hrn)
 378         authority_name = slicename.split('_')[0]
 379         login_base = authority_name[:20]
 380         sites = self.driver.shell.GetSites(login_base)
 381         if not sites:
 382             # create new site record
 383             site = {'name': 'geni.%s' % authority_name,
 384                     'abbreviated_name': authority_name,
 385                     'login_base': login_base,
 386                     'max_slices': 100,
 387                     'max_slivers': 1000,
 388                     'enabled': True,
 389                     'peer_site_id': None}
 390             if peer:
 391                 site['peer_site_id'] = slice_record.get('site_id', None)
 392             site['site_id'] = self.driver.shell.AddSite(site)
 393             # exempt federated sites from monitor policies
 394             self.driver.shell.AddSiteTag(site['site_id'], 'exempt_site_until', "20200101")
 395
 396 #            # is this still necessary?
 397 #            # add record to the local registry
 398 #            if sfa_peer and slice_record:
 399 #                peer_dict = {'type': 'authority', 'hrn': site_hrn, \
 400 #                             'peer_authority': sfa_peer, 'pointer': site['site_id']}
 401 #                self.registry.register_peer_object(self.credential, peer_dict)
 402         else:
 403             site =  sites[0]
 404             if peer:
 405                 # unbind from peer so we can modify if necessary. Will bind back later
 406                 self.driver.shell.UnBindObjectFromPeer('site', site['site_id'], peer['shortname'])
 407
 408         return site
 409
 410     def verify_slice(self, slice_hrn, slice_record, peer, sfa_peer, expiration, options={}):
 411         slicename = hrn_to_pl_slicename(slice_hrn)
 412         parts = slicename.split("_")
 413         login_base = parts[0]
 414         slices = self.driver.shell.GetSlices([slicename])
 415         expires = int(datetime_to_epoch(utcparse(expiration)))
 416         if not slices:
 417             slice = {'name': slicename,
 418                      'url': 'No Url',
 419                      'description': 'No Description'}
 420             # add the slice
 421             slice['slice_id'] = self.driver.shell.AddSlice(slice)
 422             slice['node_ids'] = []
 423             slice['person_ids'] = []
 424             if peer and slice_record:
 425                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 426             # set the expiration
 427             self.driver.shell.UpdateSlice(slice['slice_id'], {'expires': expires})
 428         else:
 429             slice = slices[0]
 430             if peer and slice_record:
 431                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 432                 # unbind from peer so we can modify if necessary. Will bind back later
 433                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 434
 435                 #Update expiration if necessary
 436             if slice['expires'] != expires:
 437                 self.driver.shell.UpdateSlice( slice['slice_id'], {'expires' : expires})
 438
 439         return slice
 440
 441     #def get_existing_persons(self, users):
 442     def verify_persons(self, slice_hrn, slice_record, users, peer, sfa_peer, options={}):
 443         users_by_email = {}
 444         users_by_site = defaultdict(list)
 445         users_dict = {}
 446         for user in users:
 447             user['urn'] = user['urn'].lower()
 448             hrn, type = urn_to_hrn(user['urn'])
 449             username = get_leaf(hrn)
 450             login_base = PlXrn(xrn=user['urn']).pl_login_base()
 451             user['username'] = username
 452             user['site'] = login_base
 453
 454             if 'email' in user:
 455                 user['email'] = user['email'].lower()
 456                 users_by_email[user['email']] = user
 457                 users_dict[user['email']] = user
 458             else:
 459                 users_by_site[user['site']].append(user)
 460
 461         # start building a list of existing users
 462         existing_user_ids = []
 463         existing_user_ids_filter = []
 464         if users_by_email:
 465             existing_user_ids_filter.extend(users_by_email.keys())
 466         if users_by_site:
 467             for login_base in users_by_site:
 468                 users = users_by_site[login_base]
 469                 for user in users:
 470                     existing_user_ids_filter.append(user['username']+'@geni.net')
 471         if existing_user_ids_filter:
 472             # get existing users by email
 473             existing_users = self.driver.shell.GetPersons({'email': existing_user_ids_filter},
 474                                                         ['person_id', 'key_ids', 'email'])
 475             existing_user_ids.extend([user['email'] for user in existing_users])
 476
 477         if users_by_site:
 478             # get a list of user sites (based on requeste user urns
 479             site_list = self.driver.shell.GetSites(users_by_site.keys(), \
 480                 ['site_id', 'login_base', 'person_ids'])
 481             # get all existing users at these sites
 482             sites = {}
 483             site_user_ids = []
 484             for site in site_list:
 485                 sites[site['site_id']] = site
 486                 site_user_ids.extend(site['person_ids'])
 487
 488             existing_site_persons_list = self.driver.shell.GetPersons(site_user_ids,
 489                                                                     ['person_id', 'key_ids', 'email', 'site_ids'])
 490
 491             # all requested users are either existing users or new (added) users
 492             for login_base in users_by_site:
 493                 requested_site_users = users_by_site[login_base]
 494                 for requested_user in requested_site_users:
 495                     user_found = False
 496                     for existing_user in existing_site_persons_list:
 497                         for site_id in existing_user['site_ids']:
 498                             if site_id in sites:
 499                                 site = sites[site_id]
 500                                 if login_base == site['login_base'] and \
 501                                    existing_user['email'].startswith(requested_user['username']+'@'):
 502                                     existing_user_ids.append(existing_user['email'])
 503                                     requested_user['email'] = existing_user['email']
 504                                     users_dict[existing_user['email']] = requested_user
 505                                     user_found = True
 506                                     break
 507                         if user_found:
 508                             break
 509
 510                     if user_found == False:
 511                         fake_email = requested_user['username'] + '@geni.net'
 512                         requested_user['email'] = fake_email
 513                         users_dict[fake_email] = requested_user
 514
 515         # requested slice users
 516         requested_user_ids = users_dict.keys()
 517         # existing slice users
 518         existing_slice_users_filter = {'person_id': slice_record.get('person_ids', [])}
 519         existing_slice_users = self.driver.shell.GetPersons(existing_slice_users_filter,
 520                                                           ['person_id', 'key_ids', 'email'])
 521         existing_slice_user_ids = [user['email'] for user in existing_slice_users]
 522
 523         # users to be added, removed or updated
 524         added_user_ids = set(requested_user_ids).difference(existing_user_ids)
 525         added_slice_user_ids = set(requested_user_ids).difference(existing_slice_user_ids)
 526         removed_user_ids = set(existing_slice_user_ids).difference(requested_user_ids)
 527         updated_user_ids = set(existing_slice_user_ids).intersection(requested_user_ids)
 528
 529         # Remove stale users (only if we are not appending).
 530         # Append by default.
 531         append = options.get('append', True)
 532         if append == False:
 533             for removed_user_id in removed_user_ids:
 534                 self.driver.shell.DeletePersonFromSlice(removed_user_id, slice_record['name'])
 535         # update_existing users
 536         updated_users_list = [user for user in users_dict.values() if user['email'] in \
 537           updated_user_ids]
 538         self.verify_keys(existing_slice_users, updated_users_list, peer, options)
 539
 540         added_persons = []
 541         # add new users
 542         for added_user_id in added_user_ids:
 543             added_user = users_dict[added_user_id]
 544             hrn, type = urn_to_hrn(added_user['urn'])
 545             person = {
 546                 'first_name': added_user.get('first_name', hrn),
 547                 'last_name': added_user.get('last_name', hrn),
 548                 'email': added_user_id,
 549                 'peer_person_id': None,
 550                 'keys': [],
 551                 'key_ids': added_user.get('key_ids', []),
 552             }
 553             person['person_id'] = self.driver.shell.AddPerson(person)
 554             if peer:
 555                 person['peer_person_id'] = added_user['person_id']
 556             added_persons.append(person)
 557
 558             # enable the account
 559             self.driver.shell.UpdatePerson(person['person_id'], {'enabled': True})
 560
 561             # add person to site
 562             self.driver.shell.AddPersonToSite(added_user_id, added_user['site'])
 563
 564             for key_string in added_user.get('keys', []):
 565                 key = {'key':key_string, 'key_type':'ssh'}
 566                 key['key_id'] = self.driver.shell.AddPersonKey(person['person_id'], key)
 567                 person['keys'].append(key)
 568
 569             # add the registry record
 570 #            if sfa_peer:
 571 #                peer_dict = {'type': 'user', 'hrn': hrn, 'peer_authority': sfa_peer, \
 572 #                    'pointer': person['person_id']}
 573 #                self.registry.register_peer_object(self.credential, peer_dict)
 574
 575         for added_slice_user_id in added_slice_user_ids.union(added_user_ids):
 576             # add person to the slice
 577             self.driver.shell.AddPersonToSlice(added_slice_user_id, slice_record['name'])
 578             # if this is a peer record then it should already be bound to a peer.
 579             # no need to return worry about it getting bound later
 580
 581         return added_persons
 582
 583
 584     def verify_keys(self, persons, users, peer, options={}):
 585         # existing keys
 586         key_ids = []
 587         for person in persons:
 588             key_ids.extend(person['key_ids'])
 589         keylist = self.driver.shell.GetKeys(key_ids, ['key_id', 'key'])
 590         keydict = {}
 591         for key in keylist:
 592             keydict[key['key']] = key['key_id']
 593         existing_keys = keydict.keys()
 594         persondict = {}
 595         for person in persons:
 596             persondict[person['email']] = person
 597
 598         # add new keys
 599         requested_keys = []
 600         updated_persons = []
 601         for user in users:
 602             user_keys = user.get('keys', [])
 603             updated_persons.append(user)
 604             for key_string in user_keys:
 605                 requested_keys.append(key_string)
 606                 if key_string not in existing_keys:
 607                     key = {'key': key_string, 'key_type': 'ssh'}
 608                     try:
 609                         if peer:
 610                             person = persondict[user['email']]
 611                             self.driver.shell.UnBindObjectFromPeer('person', person['person_id'], peer['shortname'])
 612                         key['key_id'] = self.driver.shell.AddPersonKey(user['email'], key)
 613                         if peer:
 614                             key_index = user_keys.index(key['key'])
 615                             remote_key_id = user['key_ids'][key_index]
 616                             self.driver.shell.BindObjectToPeer('key', key['key_id'], peer['shortname'], remote_key_id)
 617
 618                     finally:
 619                         if peer:
 620                             self.driver.shell.BindObjectToPeer('person', person['person_id'], peer['shortname'], user['person_id'])
 621
 622         # remove old keys (only if we are not appending)
 623         append = options.get('append', True)
 624         if append == False:
 625             removed_keys = set(existing_keys).difference(requested_keys)
 626             for existing_key_id in keydict:
 627                 if keydict[existing_key_id] in removed_keys:
 628                     try:
 629                         if peer:
 630                             self.driver.shell.UnBindObjectFromPeer('key', existing_key_id, peer['shortname'])
 631                         self.driver.shell.DeleteKey(existing_key_id)
 632                     except:
 633                         pass
 634
 635     def verify_slice_attributes(self, slice, requested_slice_attributes, options={}, admin=False):
 636         append = options.get('append', True)
 637         # get list of attributes users ar able to manage
 638         filter = {'category': '*slice*'}
 639         if not admin:
 640             filter['|roles'] = ['user']
 641         slice_attributes = self.driver.shell.GetTagTypes(filter)
 642         valid_slice_attribute_names = [attribute['tagname'] for attribute in slice_attributes]
 643
 644         # get sliver attributes
 645         added_slice_attributes = []
 646         removed_slice_attributes = []
 647         ignored_slice_attribute_names = []
 648         existing_slice_attributes = self.driver.shell.GetSliceTags({'slice_id': slice['slice_id']})
 649
 650         # get attributes that should be removed
 651         for slice_tag in existing_slice_attributes:
 652             if slice_tag['tagname'] in ignored_slice_attribute_names:
 653                 # If a slice already has a admin only role it was probably given to them by an
 654                 # admin, so we should ignore it.
 655                 ignored_slice_attribute_names.append(slice_tag['tagname'])
 656             else:
 657                 # If an existing slice attribute was not found in the request it should
 658                 # be removed
 659                 attribute_found=False
 660                 for requested_attribute in requested_slice_attributes:
 661                     if requested_attribute['name'] == slice_tag['tagname'] and \
 662                        requested_attribute['value'] == slice_tag['value']:
 663                         attribute_found=True
 664                         break
 665
 666             if not attribute_found and not append:
 667                 removed_slice_attributes.append(slice_tag)
 668
 669         # get attributes that should be added:
 670         for requested_attribute in requested_slice_attributes:
 671             # if the requested attribute wasn't found  we should add it
 672             if requested_attribute['name'] in valid_slice_attribute_names:
 673                 attribute_found = False
 674                 for existing_attribute in existing_slice_attributes:
 675                     if requested_attribute['name'] == existing_attribute['tagname'] and \
 676                        requested_attribute['value'] == existing_attribute['value']:
 677                         attribute_found=True
 678                         break
 679                 if not attribute_found:
 680                     added_slice_attributes.append(requested_attribute)
 681
 682
 683         # remove stale attributes
 684         for attribute in removed_slice_attributes:
 685             try:
 686                 self.driver.shell.DeleteSliceTag(attribute['slice_tag_id'])
 687             except Exception, e:
 688                 logger.warn('Failed to remove sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 689                                 % (slice['name'], attribute['value'],  attribute.get('node_id'), str(e)))
 690
 691         # add requested_attributes
 692         for attribute in added_slice_attributes:
 693             try:
 694                 self.driver.shell.AddSliceTag(slice['name'], attribute['name'], attribute['value'], attribute.get('node_id', None))
 695             except Exception, e:
 696                 logger.warn('Failed to add sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 697                                 % (slice['name'], attribute['value'],  attribute.get('node_id'), str(e)))
 698