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
   8 from sfa.rspecs.rspec import RSpec
   9
  10 from sfa.planetlab.vlink import VLink
  11 from sfa.planetlab.plxrn import PlXrn, hrn_to_pl_slicename, xrn_to_hostname
  12
  13 import time
  14
  15 MAXINT =  2L**31-1
  16
  17 class PlSlices:
  18
  19     rspec_to_slice_tag = {'max_rate':'net_max_rate'}
  20
  21     def __init__(self, driver):
  22         self.driver = driver
  23
  24     def get_slivers(self, xrn, node=None):
  25         hrn, type = urn_to_hrn(xrn)
  26
  27         slice_name = hrn_to_pl_slicename(hrn)
  28         # XX Should we just call PLCAPI.GetSliceTicket(slice_name) instead
  29         # of doing all of this?
  30         #return self.driver.shell.GetSliceTicket(self.auth, slice_name)
  31
  32         # from PLCAPI.GetSlivers.get_slivers()
  33         slice_fields = ['slice_id', 'name', 'instantiation', 'expires', 'person_ids', 'slice_tag_ids']
  34         slices = self.driver.shell.GetSlices(slice_name, slice_fields)
  35         # Build up list of users and slice attributes
  36         person_ids = set()
  37         all_slice_tag_ids = set()
  38         for slice in slices:
  39             person_ids.update(slice['person_ids'])
  40             all_slice_tag_ids.update(slice['slice_tag_ids'])
  41         person_ids = list(person_ids)
  42         all_slice_tag_ids = list(all_slice_tag_ids)
  43         # Get user information
  44         all_persons_list = self.driver.shell.GetPersons({'person_id':person_ids,'enabled':True}, ['person_id', 'enabled', 'key_ids'])
  45         all_persons = {}
  46         for person in all_persons_list:
  47             all_persons[person['person_id']] = person
  48
  49         # Build up list of keys
  50         key_ids = set()
  51         for person in all_persons.values():
  52             key_ids.update(person['key_ids'])
  53         key_ids = list(key_ids)
  54         # Get user account keys
  55         all_keys_list = self.driver.shell.GetKeys(key_ids, ['key_id', 'key', 'key_type'])
  56         all_keys = {}
  57         for key in all_keys_list:
  58             all_keys[key['key_id']] = key
  59         # Get slice attributes
  60         all_slice_tags_list = self.driver.shell.GetSliceTags(all_slice_tag_ids)
  61         all_slice_tags = {}
  62         for slice_tag in all_slice_tags_list:
  63             all_slice_tags[slice_tag['slice_tag_id']] = slice_tag
  64
  65         slivers = []
  66         for slice in slices:
  67             keys = []
  68             for person_id in slice['person_ids']:
  69                 if person_id in all_persons:
  70                     person = all_persons[person_id]
  71                     if not person['enabled']:
  72                         continue
  73                     for key_id in person['key_ids']:
  74                         if key_id in all_keys:
  75                             key = all_keys[key_id]
  76                             keys += [{'key_type': key['key_type'],
  77                                     'key': key['key']}]
  78             attributes = []
  79             # All (per-node and global) attributes for this slice
  80             slice_tags = []
  81             for slice_tag_id in slice['slice_tag_ids']:
  82                 if slice_tag_id in all_slice_tags:
  83                     slice_tags.append(all_slice_tags[slice_tag_id])
  84             # Per-node sliver attributes take precedence over global
  85             # slice attributes, so set them first.
  86             # Then comes nodegroup slice attributes
  87             # Followed by global slice attributes
  88             sliver_attributes = []
  89
  90             if node is not None:
  91                 for sliver_attribute in filter(lambda a: a['node_id'] == node['node_id'], slice_tags):
  92                     sliver_attributes.append(sliver_attribute['tagname'])
  93                     attributes.append({'tagname': sliver_attribute['tagname'],
  94                                     'value': sliver_attribute['value']})
  95
  96             # set nodegroup slice attributes
  97             for slice_tag in filter(lambda a: a['nodegroup_id'] in node['nodegroup_ids'], slice_tags):
  98                 # Do not set any nodegroup slice attributes for
  99                 # which there is at least one sliver attribute
 100                 # already set.
 101                 if slice_tag not in slice_tags:
 102                     attributes.append({'tagname': slice_tag['tagname'],
 103                         'value': slice_tag['value']})
 104
 105             for slice_tag in filter(lambda a: a['node_id'] is None, slice_tags):
 106                 # Do not set any global slice attributes for
 107                 # which there is at least one sliver attribute
 108                 # already set.
 109                 if slice_tag['tagname'] not in sliver_attributes:
 110                     attributes.append({'tagname': slice_tag['tagname'],
 111                                    'value': slice_tag['value']})
 112
 113             # XXX Sanity check; though technically this should be a system invariant
 114             # checked with an assertion
 115             if slice['expires'] > MAXINT:  slice['expires']= MAXINT
 116
 117             slivers.append({
 118                 'hrn': hrn,
 119                 'name': slice['name'],
 120                 'slice_id': slice['slice_id'],
 121                 'instantiation': slice['instantiation'],
 122                 'expires': slice['expires'],
 123                 'keys': keys,
 124                 'attributes': attributes
 125             })
 126
 127         return slivers
 128
 129     def get_peer(self, xrn):
 130         hrn, type = urn_to_hrn(xrn)
 131         # Becaues of myplc federation,  we first need to determine if this
 132         # slice belongs to out local plc or a myplc peer. We will assume it
 133         # is a local site, unless we find out otherwise
 134         peer = None
 135
 136         # get this slice's authority (site)
 137         slice_authority = get_authority(hrn)
 138
 139         # get this site's authority (sfa root authority or sub authority)
 140         site_authority = get_authority(slice_authority).lower()
 141
 142         # check if we are already peered with this site_authority, if so
 143         peers = self.driver.shell.GetPeers({}, ['peer_id', 'peername', 'shortname', 'hrn_root'])
 144         for peer_record in peers:
 145             names = [name.lower() for name in peer_record.values() if isinstance(name, StringTypes)]
 146             if site_authority in names:
 147                 peer = peer_record
 148
 149         return peer
 150
 151     def get_sfa_peer(self, xrn):
 152         hrn, type = urn_to_hrn(xrn)
 153
 154         # return the authority for this hrn or None if we are the authority
 155         sfa_peer = None
 156         slice_authority = get_authority(hrn)
 157         site_authority = get_authority(slice_authority)
 158
 159         if site_authority != self.driver.hrn:
 160             sfa_peer = site_authority
 161
 162         return sfa_peer
 163
 164     def verify_slice_leases(self, slice, rspec_requested_leases, peer):
 165
 166         leases = self.driver.shell.GetLeases({'name':slice['name'], 'clip':int(time.time())}, ['lease_id','name', 'hostname', 't_from', 't_until'])
 167         grain = self.driver.shell.GetLeaseGranularity()
 168
 169         requested_leases = []
 170         for lease in rspec_requested_leases:
 171              requested_lease = {}
 172              slice_name = hrn_to_pl_slicename(lease['slice_id'])
 173              if slice_name != slice['name']:
 174                  continue
 175              hostname = xrn_to_hostname(lease['component_id'])
 176              # fill the requested node with nitos ids
 177              requested_lease['name'] = slice['name']
 178              requested_lease['hostname'] = hostname
 179              requested_lease['t_from'] = int(lease['start_time'])
 180              requested_lease['t_until'] = int(lease['duration']) * grain + int(lease['start_time'])
 181              requested_leases.append(requested_lease)
 182
 183
 184
 185         # prepare actual slice leases by lease_id
 186         leases_by_id = {}
 187         for lease in leases:
 188              leases_by_id[lease['lease_id']] = {'name': lease['name'], 'hostname': lease['hostname'], \
 189                                                 't_from': lease['t_from'], 't_until': lease['t_until']}
 190
 191         added_leases = []
 192         kept_leases_id = []
 193         deleted_leases_id = []
 194         for lease_id in leases_by_id:
 195              if leases_by_id[lease_id] not in requested_leases:
 196                  deleted_leases_id.append(lease_id)
 197              else:
 198                  kept_leases_id.append(lease_id)
 199                  requested_leases.remove(leases_by_id[lease_id])
 200         added_leases = requested_leases
 201
 202
 203         try:
 204             if peer:
 205                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 206             self.driver.shell.DeleteLeases(deleted_leases_id)
 207             for lease in added_leases:
 208                 self.driver.shell.AddLeases(lease['hostname'], slice['name'], lease['t_from'], lease['t_until'])
 209
 210         except:
 211             logger.log_exc('Failed to add/remove slice leases')
 212
 213         return leases
 214
 215
 216     def verify_slice_nodes(self, slice, slivers, peer):
 217
 218         nodes = self.driver.shell.GetNodes(slice['node_ids'], ['node_id', 'hostname', 'interface_ids'])
 219         current_slivers = [node['hostname'] for node in nodes]
 220
 221         requested_slivers = []
 222         tags = []
 223         for node in slivers:
 224             hostname = None
 225             if node.get('component_name'):
 226                 hostname = node.get('component_name').strip()
 227             elif node.get('component_id'):
 228                 hostname = xrn_to_hostname(node.get('component_id').strip())
 229             if node.get('client_id'):
 230                 tags.append({'slicename': slice['name'],
 231                              'tagname': 'client_id',
 232                              'value': node['client_id'],
 233                              'node': hostname})
 234             if hostname:
 235                 requested_slivers.append(hostname)
 236
 237         # remove nodes not in rspec
 238         deleted_nodes = list(set(current_slivers).difference(requested_slivers))
 239
 240         # add nodes from rspec
 241         added_nodes = list(set(requested_slivers).difference(current_slivers))
 242
 243         try:
 244             if peer:
 245                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 246             self.driver.shell.AddSliceToNodes(slice['name'], added_nodes)
 247             self.driver.shell.DeleteSliceFromNodes(slice['name'], deleted_nodes)
 248
 249         except:
 250             logger.log_exc('Failed to add/remove slice from nodes')
 251
 252         # add tags
 253         for tag in tags:
 254             try:
 255                 self.driver.shell.AddSliceTag(tag['slicename'], tag['tagname'], tag['value'], tag['node'])
 256             except:
 257                 logger.log_exc('Failed to add slice tag')
 258         return nodes
 259
 260     def free_egre_key(self):
 261         used = set()
 262         for tag in self.driver.shell.GetSliceTags({'tagname': 'egre_key'}):
 263                 used.add(int(tag['value']))
 264
 265         for i in range(1, 256):
 266             if i not in used:
 267                 key = i
 268                 break
 269         else:
 270             raise KeyError("No more EGRE keys available")
 271
 272         return str(key)
 273
 274     def verify_slice_links(self, slice, requested_links, nodes):
 275         # nodes is undefined here
 276         if not requested_links:
 277             return
 278
 279         # build dict of nodes
 280         nodes_dict = {}
 281         interface_ids = []
 282         for node in nodes:
 283             nodes_dict[node['node_id']] = node
 284             interface_ids.extend(node['interface_ids'])
 285         # build dict of interfaces
 286         interfaces = self.driver.shell.GetInterfaces(interface_ids)
 287         interfaces_dict = {}
 288         for interface in interfaces:
 289             interfaces_dict[interface['interface_id']] = interface
 290
 291         slice_tags = []
 292
 293         # set egre key
 294         slice_tags.append({'name': 'egre_key', 'value': self.free_egre_key()})
 295
 296         # set netns
 297         slice_tags.append({'name': 'netns', 'value': '1'})
 298
 299         # set cap_net_admin
 300         # need to update the attribute string?
 301         slice_tags.append({'name': 'capabilities', 'value': 'CAP_NET_ADMIN'})
 302
 303         for link in requested_links:
 304             # get the ip address of the first node in the link
 305             ifname1 = Xrn(link['interface1']['component_id']).get_leaf()
 306             (node_raw, device) = ifname1.split(':')
 307             node_id = int(node_raw.replace('node', ''))
 308             node = nodes_dict[node_id]
 309             if1 = interfaces_dict[node['interface_ids'][0]]
 310             ipaddr = if1['ip']
 311             topo_rspec = VLink.get_topo_rspec(link, ipaddr)
 312             # set topo_rspec tag
 313             slice_tags.append({'name': 'topo_rspec', 'value': str([topo_rspec]), 'node_id': node_id})
 314             # set vini_topo tag
 315             slice_tags.append({'name': 'vini_topo', 'value': 'manual', 'node_id': node_id})
 316             #self.driver.shell.AddSliceTag(slice['name'], 'topo_rspec', str([topo_rspec]), node_id)
 317
 318         self.verify_slice_attributes(slice, slice_tags, {'append': True}, admin=True)
 319
 320
 321
 322     def handle_peer(self, site, slice, persons, peer):
 323         if peer:
 324             # bind site
 325             try:
 326                 if site:
 327                     self.driver.shell.BindObjectToPeer('site', site['site_id'], peer['shortname'], slice['site_id'])
 328             except Exception,e:
 329                 self.driver.shell.DeleteSite(site['site_id'])
 330                 raise e
 331
 332             # bind slice
 333             try:
 334                 if slice:
 335                     self.driver.shell.BindObjectToPeer('slice', slice['slice_id'], peer['shortname'], slice['slice_id'])
 336             except Exception,e:
 337                 self.driver.shell.DeleteSlice(slice['slice_id'])
 338                 raise e
 339
 340             # bind persons
 341             for person in persons:
 342                 try:
 343                     self.driver.shell.BindObjectToPeer('person',
 344                                                      person['person_id'], peer['shortname'], person['peer_person_id'])
 345
 346                     for (key, remote_key_id) in zip(person['keys'], person['key_ids']):
 347                         try:
 348                             self.driver.shell.BindObjectToPeer( 'key', key['key_id'], peer['shortname'], remote_key_id)
 349                         except:
 350                             self.driver.shell.DeleteKey(key['key_id'])
 351                             logger("failed to bind key: %s to peer: %s " % (key['key_id'], peer['shortname']))
 352                 except Exception,e:
 353                     self.driver.shell.DeletePerson(person['person_id'])
 354                     raise e
 355
 356         return slice
 357
 358     def verify_site(self, slice_xrn, slice_record={}, peer=None, sfa_peer=None, options={}):
 359         (slice_hrn, type) = urn_to_hrn(slice_xrn)
 360         site_hrn = get_authority(slice_hrn)
 361         # login base can't be longer than 20 characters
 362         slicename = hrn_to_pl_slicename(slice_hrn)
 363         authority_name = slicename.split('_')[0]
 364         login_base = authority_name[:20]
 365         sites = self.driver.shell.GetSites(login_base)
 366         if not sites:
 367             # create new site record
 368             site = {'name': 'geni.%s' % authority_name,
 369                     'abbreviated_name': authority_name,
 370                     'login_base': login_base,
 371                     'max_slices': 100,
 372                     'max_slivers': 1000,
 373                     'enabled': True,
 374                     'peer_site_id': None}
 375             if peer:
 376                 site['peer_site_id'] = slice_record.get('site_id', None)
 377             site['site_id'] = self.driver.shell.AddSite(site)
 378             # exempt federated sites from monitor policies
 379             self.driver.shell.AddSiteTag(site['site_id'], 'exempt_site_until', "20200101")
 380
 381 #            # is this still necessary?
 382 #            # add record to the local registry
 383 #            if sfa_peer and slice_record:
 384 #                peer_dict = {'type': 'authority', 'hrn': site_hrn, \
 385 #                             'peer_authority': sfa_peer, 'pointer': site['site_id']}
 386 #                self.registry.register_peer_object(self.credential, peer_dict)
 387         else:
 388             site =  sites[0]
 389             if peer:
 390                 # unbind from peer so we can modify if necessary. Will bind back later
 391                 self.driver.shell.UnBindObjectFromPeer('site', site['site_id'], peer['shortname'])
 392
 393         return site
 394
 395     def verify_slice(self, slice_hrn, slice_record, peer, sfa_peer, options={}):
 396         slicename = hrn_to_pl_slicename(slice_hrn)
 397         parts = slicename.split("_")
 398         login_base = parts[0]
 399         slices = self.driver.shell.GetSlices([slicename])
 400         if not slices:
 401             slice = {'name': slicename,
 402                      'url': slice_record.get('url', slice_hrn),
 403                      'description': slice_record.get('description', slice_hrn)}
 404             # add the slice
 405             slice['slice_id'] = self.driver.shell.AddSlice(slice)
 406             slice['node_ids'] = []
 407             slice['person_ids'] = []
 408             if peer:
 409                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 410             # mark this slice as an sfa peer record
 411 #            if sfa_peer:
 412 #                peer_dict = {'type': 'slice', 'hrn': slice_hrn,
 413 #                             'peer_authority': sfa_peer, 'pointer': slice['slice_id']}
 414 #                self.registry.register_peer_object(self.credential, peer_dict)
 415         else:
 416             slice = slices[0]
 417             if peer:
 418                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 419                 # unbind from peer so we can modify if necessary. Will bind back later
 420                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 421                 #Update existing record (e.g. expires field) it with the latest info.
 422             if slice_record.get('expires'):
 423                 requested_expires = int(datetime_to_epoch(utcparse(slice_record['expires'])))
 424                 if requested_expires and slice['expires'] != requested_expires:
 425                     self.driver.shell.UpdateSlice( slice['slice_id'], {'expires' : requested_expires})
 426
 427         return slice
 428
 429     #def get_existing_persons(self, users):
 430     def verify_persons(self, slice_hrn, slice_record, users, peer, sfa_peer, options={}):
 431         users_by_email = {}
 432         users_by_site = defaultdict(list)
 433         users_dict = {}
 434         for user in users:
 435             user['urn'] = user['urn'].lower()
 436             hrn, type = urn_to_hrn(user['urn'])
 437             username = get_leaf(hrn)
 438             login_base = PlXrn(xrn=user['urn']).pl_login_base()
 439             user['username'] = username
 440             user['site'] = login_base
 441
 442             if 'email' in user:
 443                 user['email'] = user['email'].lower()
 444                 users_by_email[user['email']] = user
 445                 users_dict[user['email']] = user
 446             else:
 447                 users_by_site[user['site']].append(user)
 448
 449         # start building a list of existing users
 450         existing_user_ids = []
 451         existing_user_ids_filter = []
 452         if users_by_email:
 453             existing_user_ids_filter.extend(users_by_email.keys())
 454         if users_by_site:
 455             for login_base in users_by_site:
 456                 users = users_by_site[login_base]
 457                 for user in users:
 458                     existing_user_ids_filter.append(user['username']+'@geni.net')
 459         if existing_user_ids_filter:
 460             # get existing users by email
 461             existing_users = self.driver.shell.GetPersons({'email': existing_user_ids_filter},
 462                                                         ['person_id', 'key_ids', 'email'])
 463             existing_user_ids.extend([user['email'] for user in existing_users])
 464
 465         if users_by_site:
 466             # get a list of user sites (based on requeste user urns
 467             site_list = self.driver.shell.GetSites(users_by_site.keys(), \
 468                 ['site_id', 'login_base', 'person_ids'])
 469             # get all existing users at these sites
 470             sites = {}
 471             site_user_ids = []
 472             for site in site_list:
 473                 sites[site['site_id']] = site
 474                 site_user_ids.extend(site['person_ids'])
 475
 476             existing_site_persons_list = self.driver.shell.GetPersons(site_user_ids,
 477                                                                     ['person_id', 'key_ids', 'email', 'site_ids'])
 478
 479             # all requested users are either existing users or new (added) users
 480             for login_base in users_by_site:
 481                 requested_site_users = users_by_site[login_base]
 482                 for requested_user in requested_site_users:
 483                     user_found = False
 484                     for existing_user in existing_site_persons_list:
 485                         for site_id in existing_user['site_ids']:
 486                             if site_id in sites:
 487                                 site = sites[site_id]
 488                                 if login_base == site['login_base'] and \
 489                                    existing_user['email'].startswith(requested_user['username']+'@'):
 490                                     existing_user_ids.append(existing_user['email'])
 491                                     requested_user['email'] = existing_user['email']
 492                                     users_dict[existing_user['email']] = requested_user
 493                                     user_found = True
 494                                     break
 495                         if user_found:
 496                             break
 497
 498                     if user_found == False:
 499                         fake_email = requested_user['username'] + '@geni.net'
 500                         requested_user['email'] = fake_email
 501                         users_dict[fake_email] = requested_user
 502
 503         # requested slice users
 504         requested_user_ids = users_dict.keys()
 505         # existing slice users
 506         existing_slice_users_filter = {'person_id': slice_record.get('person_ids', [])}
 507         existing_slice_users = self.driver.shell.GetPersons(existing_slice_users_filter,
 508                                                           ['person_id', 'key_ids', 'email'])
 509         existing_slice_user_ids = [user['email'] for user in existing_slice_users]
 510
 511         # users to be added, removed or updated
 512         added_user_ids = set(requested_user_ids).difference(existing_user_ids)
 513         added_slice_user_ids = set(requested_user_ids).difference(existing_slice_user_ids)
 514         removed_user_ids = set(existing_slice_user_ids).difference(requested_user_ids)
 515         updated_user_ids = set(existing_slice_user_ids).intersection(requested_user_ids)
 516
 517         # Remove stale users (only if we are not appending).
 518         # Append by default.
 519         append = options.get('append', True)
 520         if append == False:
 521             for removed_user_id in removed_user_ids:
 522                 self.driver.shell.DeletePersonFromSlice(removed_user_id, slice_record['name'])
 523         # update_existing users
 524         updated_users_list = [user for user in users_dict.values() if user['email'] in \
 525           updated_user_ids]
 526         self.verify_keys(existing_slice_users, updated_users_list, peer, options)
 527
 528         added_persons = []
 529         # add new users
 530         for added_user_id in added_user_ids:
 531             added_user = users_dict[added_user_id]
 532             hrn, type = urn_to_hrn(added_user['urn'])
 533             person = {
 534                 'first_name': added_user.get('first_name', hrn),
 535                 'last_name': added_user.get('last_name', hrn),
 536                 'email': added_user_id,
 537                 'peer_person_id': None,
 538                 'keys': [],
 539                 'key_ids': added_user.get('key_ids', []),
 540             }
 541             person['person_id'] = self.driver.shell.AddPerson(person)
 542             if peer:
 543                 person['peer_person_id'] = added_user['person_id']
 544             added_persons.append(person)
 545
 546             # enable the account
 547             self.driver.shell.UpdatePerson(person['person_id'], {'enabled': True})
 548
 549             # add person to site
 550             self.driver.shell.AddPersonToSite(added_user_id, added_user['site'])
 551
 552             for key_string in added_user.get('keys', []):
 553                 key = {'key':key_string, 'key_type':'ssh'}
 554                 key['key_id'] = self.driver.shell.AddPersonKey(person['person_id'], key)
 555                 person['keys'].append(key)
 556
 557             # add the registry record
 558 #            if sfa_peer:
 559 #                peer_dict = {'type': 'user', 'hrn': hrn, 'peer_authority': sfa_peer, \
 560 #                    'pointer': person['person_id']}
 561 #                self.registry.register_peer_object(self.credential, peer_dict)
 562
 563         for added_slice_user_id in added_slice_user_ids.union(added_user_ids):
 564             # add person to the slice
 565             self.driver.shell.AddPersonToSlice(added_slice_user_id, slice_record['name'])
 566             # if this is a peer record then it should already be bound to a peer.
 567             # no need to return worry about it getting bound later
 568
 569         return added_persons
 570
 571
 572     def verify_keys(self, persons, users, peer, options={}):
 573         # existing keys
 574         key_ids = []
 575         for person in persons:
 576             key_ids.extend(person['key_ids'])
 577         keylist = self.driver.shell.GetKeys(key_ids, ['key_id', 'key'])
 578         keydict = {}
 579         for key in keylist:
 580             keydict[key['key']] = key['key_id']
 581         existing_keys = keydict.keys()
 582         persondict = {}
 583         for person in persons:
 584             persondict[person['email']] = person
 585
 586         # add new keys
 587         requested_keys = []
 588         updated_persons = []
 589         for user in users:
 590             user_keys = user.get('keys', [])
 591             updated_persons.append(user)
 592             for key_string in user_keys:
 593                 requested_keys.append(key_string)
 594                 if key_string not in existing_keys:
 595                     key = {'key': key_string, 'key_type': 'ssh'}
 596                     try:
 597                         if peer:
 598                             person = persondict[user['email']]
 599                             self.driver.shell.UnBindObjectFromPeer('person', person['person_id'], peer['shortname'])
 600                         key['key_id'] = self.driver.shell.AddPersonKey(user['email'], key)
 601                         if peer:
 602                             key_index = user_keys.index(key['key'])
 603                             remote_key_id = user['key_ids'][key_index]
 604                             self.driver.shell.BindObjectToPeer('key', key['key_id'], peer['shortname'], remote_key_id)
 605
 606                     finally:
 607                         if peer:
 608                             self.driver.shell.BindObjectToPeer('person', person['person_id'], peer['shortname'], user['person_id'])
 609
 610         # remove old keys (only if we are not appending)
 611         append = options.get('append', True)
 612         if append == False:
 613             removed_keys = set(existing_keys).difference(requested_keys)
 614             for existing_key_id in keydict:
 615                 if keydict[existing_key_id] in removed_keys:
 616                     try:
 617                         if peer:
 618                             self.driver.shell.UnBindObjectFromPeer('key', existing_key_id, peer['shortname'])
 619                         self.driver.shell.DeleteKey(existing_key_id)
 620                     except:
 621                         pass
 622
 623     def verify_slice_attributes(self, slice, requested_slice_attributes, options={}, admin=False):
 624         append = options.get('append', True)
 625         # get list of attributes users ar able to manage
 626         filter = {'category': '*slice*'}
 627         if not admin:
 628             filter['|roles'] = ['user']
 629         slice_attributes = self.driver.shell.GetTagTypes(filter)
 630         valid_slice_attribute_names = [attribute['tagname'] for attribute in slice_attributes]
 631
 632         # get sliver attributes
 633         added_slice_attributes = []
 634         removed_slice_attributes = []
 635         ignored_slice_attribute_names = []
 636         existing_slice_attributes = self.driver.shell.GetSliceTags({'slice_id': slice['slice_id']})
 637
 638         # get attributes that should be removed
 639         for slice_tag in existing_slice_attributes:
 640             if slice_tag['tagname'] in ignored_slice_attribute_names:
 641                 # If a slice already has a admin only role it was probably given to them by an
 642                 # admin, so we should ignore it.
 643                 ignored_slice_attribute_names.append(slice_tag['tagname'])
 644             else:
 645                 # If an existing slice attribute was not found in the request it should
 646                 # be removed
 647                 attribute_found=False
 648                 for requested_attribute in requested_slice_attributes:
 649                     if requested_attribute['name'] == slice_tag['tagname'] and \
 650                        requested_attribute['value'] == slice_tag['value']:
 651                         attribute_found=True
 652                         break
 653
 654             if not attribute_found and not append:
 655                 removed_slice_attributes.append(slice_tag)
 656
 657         # get attributes that should be added:
 658         for requested_attribute in requested_slice_attributes:
 659             # if the requested attribute wasn't found  we should add it
 660             if requested_attribute['name'] in valid_slice_attribute_names:
 661                 attribute_found = False
 662                 for existing_attribute in existing_slice_attributes:
 663                     if requested_attribute['name'] == existing_attribute['tagname'] and \
 664                        requested_attribute['value'] == existing_attribute['value']:
 665                         attribute_found=True
 666                         break
 667                 if not attribute_found:
 668                     added_slice_attributes.append(requested_attribute)
 669
 670
 671         # remove stale attributes
 672         for attribute in removed_slice_attributes:
 673             try:
 674                 self.driver.shell.DeleteSliceTag(attribute['slice_tag_id'])
 675             except Exception, e:
 676                 logger.warn('Failed to remove sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 677                                 % (slice['name'], attribute['value'],  attribute.get('node_id'), str(e)))
 678
 679         # add requested_attributes
 680         for attribute in added_slice_attributes:
 681             try:
 682                 self.driver.shell.AddSliceTag(slice['name'], attribute['name'], attribute['value'], attribute.get('node_id', None))
 683             except Exception, e:
 684                 logger.warn('Failed to add sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 685                                 % (slice['name'], attribute['value'],  attribute.get('node_id'), str(e)))
 686