sfa/planetlab/plslices.py

   1 from types import StringTypes
   2 from collections import defaultdict
   3 import sys
   4
   5 from sfa.util.sfatime import utcparse, datetime_to_epoch
   6 from sfa.util.sfalogging import logger
   7 from sfa.util.xrn import Xrn, get_leaf, get_authority, urn_to_hrn
   8
   9 from sfa.rspecs.rspec import RSpec
  10
  11 from sfa.planetlab.vlink import VLink
  12 from sfa.planetlab.plxrn import PlXrn, hrn_to_pl_slicename, xrn_to_hostname
  13
  14 import time
  15
  16 MAXINT =  2L**31-1
  17
  18 class PlSlices:
  19
  20     rspec_to_slice_tag = {'max_rate':'net_max_rate'}
  21
  22     def __init__(self, driver):
  23         self.driver = driver
  24
  25     def get_slivers(self, xrn, node=None):
  26         hrn, type = urn_to_hrn(xrn)
  27
  28         slice_name = hrn_to_pl_slicename(hrn)
  29         # XX Should we just call PLCAPI.GetSliceTicket(slice_name) instead
  30         # of doing all of this?
  31         #return self.driver.shell.GetSliceTicket(self.auth, slice_name)
  32
  33         # from PLCAPI.GetSlivers.get_slivers()
  34         slice_fields = ['slice_id', 'name', 'instantiation', 'expires', 'person_ids', 'slice_tag_ids']
  35         slices = self.driver.shell.GetSlices(slice_name, slice_fields)
  36         # Build up list of users and slice attributes
  37         person_ids = set()
  38         all_slice_tag_ids = set()
  39         for slice in slices:
  40             person_ids.update(slice['person_ids'])
  41             all_slice_tag_ids.update(slice['slice_tag_ids'])
  42         person_ids = list(person_ids)
  43         all_slice_tag_ids = list(all_slice_tag_ids)
  44         # Get user information
  45         all_persons_list = self.driver.shell.GetPersons({'person_id':person_ids,'enabled':True}, ['person_id', 'enabled', 'key_ids'])
  46         all_persons = {}
  47         for person in all_persons_list:
  48             all_persons[person['person_id']] = person
  49
  50         # Build up list of keys
  51         key_ids = set()
  52         for person in all_persons.values():
  53             key_ids.update(person['key_ids'])
  54         key_ids = list(key_ids)
  55         # Get user account keys
  56         all_keys_list = self.driver.shell.GetKeys(key_ids, ['key_id', 'key', 'key_type'])
  57         all_keys = {}
  58         for key in all_keys_list:
  59             all_keys[key['key_id']] = key
  60         # Get slice attributes
  61         all_slice_tags_list = self.driver.shell.GetSliceTags(all_slice_tag_ids)
  62         all_slice_tags = {}
  63         for slice_tag in all_slice_tags_list:
  64             all_slice_tags[slice_tag['slice_tag_id']] = slice_tag
  65
  66         slivers = []
  67         for slice in slices:
  68             keys = []
  69             for person_id in slice['person_ids']:
  70                 if person_id in all_persons:
  71                     person = all_persons[person_id]
  72                     if not person['enabled']:
  73                         continue
  74                     for key_id in person['key_ids']:
  75                         if key_id in all_keys:
  76                             key = all_keys[key_id]
  77                             keys += [{'key_type': key['key_type'],
  78                                     'key': key['key']}]
  79             attributes = []
  80             # All (per-node and global) attributes for this slice
  81             slice_tags = []
  82             for slice_tag_id in slice['slice_tag_ids']:
  83                 if slice_tag_id in all_slice_tags:
  84                     slice_tags.append(all_slice_tags[slice_tag_id])
  85             # Per-node sliver attributes take precedence over global
  86             # slice attributes, so set them first.
  87             # Then comes nodegroup slice attributes
  88             # Followed by global slice attributes
  89             sliver_attributes = []
  90
  91             if node is not None:
  92                 for sliver_attribute in filter(lambda a: a['node_id'] == node['node_id'], slice_tags):
  93                     sliver_attributes.append(sliver_attribute['tagname'])
  94                     attributes.append({'tagname': sliver_attribute['tagname'],
  95                                     'value': sliver_attribute['value']})
  96
  97             # set nodegroup slice attributes
  98             for slice_tag in filter(lambda a: a['nodegroup_id'] in node['nodegroup_ids'], slice_tags):
  99                 # Do not set any nodegroup slice attributes for
 100                 # which there is at least one sliver attribute
 101                 # already set.
 102                 if slice_tag not in slice_tags:
 103                     attributes.append({'tagname': slice_tag['tagname'],
 104                         'value': slice_tag['value']})
 105
 106             for slice_tag in filter(lambda a: a['node_id'] is None, slice_tags):
 107                 # Do not set any global slice attributes for
 108                 # which there is at least one sliver attribute
 109                 # already set.
 110                 if slice_tag['tagname'] not in sliver_attributes:
 111                     attributes.append({'tagname': slice_tag['tagname'],
 112                                    'value': slice_tag['value']})
 113
 114             # XXX Sanity check; though technically this should be a system invariant
 115             # checked with an assertion
 116             if slice['expires'] > MAXINT:  slice['expires']= MAXINT
 117
 118             slivers.append({
 119                 'hrn': hrn,
 120                 'name': slice['name'],
 121                 'slice_id': slice['slice_id'],
 122                 'instantiation': slice['instantiation'],
 123                 'expires': slice['expires'],
 124                 'keys': keys,
 125                 'attributes': attributes
 126             })
 127
 128         return slivers
 129
 130     def get_peer(self, xrn):
 131         hrn, type = urn_to_hrn(xrn)
 132         # Becaues of myplc federation,  we first need to determine if this
 133         # slice belongs to out local plc or a myplc peer. We will assume it
 134         # is a local site, unless we find out otherwise
 135         peer = None
 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         # 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, slivers, peer):
 219
 220         nodes = self.driver.shell.GetNodes(slice['node_ids'], ['node_id', 'hostname', 'interface_ids'])
 221         current_slivers = [node['hostname'] for node in nodes]
 222
 223         requested_slivers = []
 224         tags = []
 225         for node in slivers:
 226             hostname = None
 227             if node.get('component_name'):
 228                 hostname = node.get('component_name').strip()
 229             elif node.get('component_id'):
 230                 hostname = xrn_to_hostname(node.get('component_id').strip())
 231             if node.get('client_id'):
 232                 tags.append({'slicename': slice['name'],
 233                              'tagname': 'client_id',
 234                              'value': node['client_id'],
 235                              'node': hostname})
 236             if hostname:
 237                 requested_slivers.append(hostname)
 238
 239         # remove nodes not in rspec
 240         deleted_nodes = list(set(current_slivers).difference(requested_slivers))
 241
 242         # add nodes from rspec
 243         added_nodes = list(set(requested_slivers).difference(current_slivers))
 244
 245         try:
 246             if peer:
 247                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 248             self.driver.shell.AddSliceToNodes(slice['name'], added_nodes)
 249             self.driver.shell.DeleteSliceFromNodes(slice['name'], deleted_nodes)
 250
 251         except:
 252             logger.log_exc('Failed to add/remove slice from nodes')
 253
 254         # add tags
 255         for tag in tags:
 256             try:
 257                 self.driver.shell.AddSliceTag(tag['slicename'], tag['tagname'], tag['value'], tag['node'])
 258             except:
 259                 logger.log_exc('Failed to add slice tag')
 260         return nodes
 261
 262     def free_egre_key(self):
 263         used = set()
 264         for tag in self.driver.shell.GetSliceTags({'tagname': 'egre_key'}):
 265                 used.add(int(tag['value']))
 266
 267         for i in range(1, 256):
 268             if i not in used:
 269                 key = i
 270                 break
 271         else:
 272             raise KeyError("No more EGRE keys available")
 273
 274         return str(key)
 275
 276     def verify_slice_links(self, slice, requested_links, nodes):
 277         # nodes is undefined here
 278         if not requested_links:
 279             return
 280
 281         # build dict of nodes
 282         nodes_dict = {}
 283         interface_ids = []
 284         for node in nodes:
 285             nodes_dict[node['node_id']] = node
 286             interface_ids.extend(node['interface_ids'])
 287         # build dict of interfaces
 288         interfaces = self.driver.shell.GetInterfaces(interface_ids)
 289         interfaces_dict = {}
 290         for interface in interfaces:
 291             interfaces_dict[interface['interface_id']] = interface
 292
 293         slice_tags = []
 294
 295         # set egre key
 296         slice_tags.append({'name': 'egre_key', 'value': self.free_egre_key()})
 297
 298         # set netns
 299         slice_tags.append({'name': 'netns', 'value': '1'})
 300
 301         # set cap_net_admin
 302         # need to update the attribute string?
 303         slice_tags.append({'name': 'capabilities', 'value': 'CAP_NET_ADMIN'})
 304
 305         for link in requested_links:
 306             # get the ip address of the first node in the link
 307             ifname1 = Xrn(link['interface1']['component_id']).get_leaf()
 308             (node_raw, device) = ifname1.split(':')
 309             node_id = int(node_raw.replace('node', ''))
 310             node = nodes_dict[node_id]
 311             if1 = interfaces_dict[node['interface_ids'][0]]
 312             ipaddr = if1['ip']
 313             topo_rspec = VLink.get_topo_rspec(link, ipaddr)
 314             # set topo_rspec tag
 315             slice_tags.append({'name': 'topo_rspec', 'value': str([topo_rspec]), 'node_id': node_id})
 316             # set vini_topo tag
 317             slice_tags.append({'name': 'vini_topo', 'value': 'manual', 'node_id': node_id})
 318             #self.driver.shell.AddSliceTag(slice['name'], 'topo_rspec', str([topo_rspec]), node_id)
 319
 320         self.verify_slice_attributes(slice, slice_tags, {'append': True}, admin=True)
 321
 322
 323
 324     def handle_peer(self, site, slice, persons, peer):
 325         if peer:
 326             # bind site
 327             try:
 328                 if site:
 329                     self.driver.shell.BindObjectToPeer('site', site['site_id'], peer['shortname'], slice['site_id'])
 330             except Exception,e:
 331                 self.driver.shell.DeleteSite(site['site_id'])
 332                 raise e
 333
 334             # bind slice
 335             try:
 336                 if slice:
 337                     self.driver.shell.BindObjectToPeer('slice', slice['slice_id'], peer['shortname'], slice['slice_id'])
 338             except Exception,e:
 339                 self.driver.shell.DeleteSlice(slice['slice_id'])
 340                 raise e
 341
 342             # bind persons
 343             for person in persons:
 344                 try:
 345                     self.driver.shell.BindObjectToPeer('person',
 346                                                      person['person_id'], peer['shortname'], person['peer_person_id'])
 347
 348                     for (key, remote_key_id) in zip(person['keys'], person['key_ids']):
 349                         try:
 350                             self.driver.shell.BindObjectToPeer( 'key', key['key_id'], peer['shortname'], remote_key_id)
 351                         except:
 352                             self.driver.shell.DeleteKey(key['key_id'])
 353                             logger("failed to bind key: %s to peer: %s " % (key['key_id'], peer['shortname']))
 354                 except Exception,e:
 355                     self.driver.shell.DeletePerson(person['person_id'])
 356                     raise e
 357
 358         return slice
 359
 360     def verify_site(self, slice_xrn, slice_record={}, peer=None, sfa_peer=None, options={}):
 361         (slice_hrn, type) = urn_to_hrn(slice_xrn)
 362         site_hrn = get_authority(slice_hrn)
 363         # login base can't be longer than 20 characters
 364         slicename = hrn_to_pl_slicename(slice_hrn)
 365         authority_name = slicename.split('_')[0]
 366         login_base = authority_name[:20]
 367         sites = self.driver.shell.GetSites(login_base)
 368         if not sites:
 369             # create new site record
 370             site = {'name': 'geni.%s' % authority_name,
 371                     'abbreviated_name': authority_name,
 372                     'login_base': login_base,
 373                     'max_slices': 100,
 374                     'max_slivers': 1000,
 375                     'enabled': True,
 376                     'peer_site_id': None}
 377             if peer:
 378                 site['peer_site_id'] = slice_record.get('site_id', None)
 379             site['site_id'] = self.driver.shell.AddSite(site)
 380             # exempt federated sites from monitor policies
 381             self.driver.shell.AddSiteTag(site['site_id'], 'exempt_site_until', "20200101")
 382
 383 #            # is this still necessary?
 384 #            # add record to the local registry
 385 #            if sfa_peer and slice_record:
 386 #                peer_dict = {'type': 'authority', 'hrn': site_hrn, \
 387 #                             'peer_authority': sfa_peer, 'pointer': site['site_id']}
 388 #                self.registry.register_peer_object(self.credential, peer_dict)
 389         else:
 390             site =  sites[0]
 391             if peer:
 392                 # unbind from peer so we can modify if necessary. Will bind back later
 393                 self.driver.shell.UnBindObjectFromPeer('site', site['site_id'], peer['shortname'])
 394
 395         return site
 396
 397     def verify_slice(self, slice_hrn, slice_record, peer, sfa_peer, options={}):
 398         slicename = hrn_to_pl_slicename(slice_hrn)
 399         parts = slicename.split("_")
 400         login_base = parts[0]
 401         slices = self.driver.shell.GetSlices([slicename])
 402         if not slices:
 403             slice = {'name': slicename,
 404                      'url': slice_record.get('url', slice_hrn),
 405                      'description': slice_record.get('description', slice_hrn)}
 406             # add the slice
 407             slice['slice_id'] = self.driver.shell.AddSlice(slice)
 408             slice['node_ids'] = []
 409             slice['person_ids'] = []
 410             if peer:
 411                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 412             # mark this slice as an sfa peer record
 413 #            if sfa_peer:
 414 #                peer_dict = {'type': 'slice', 'hrn': slice_hrn,
 415 #                             'peer_authority': sfa_peer, 'pointer': slice['slice_id']}
 416 #                self.registry.register_peer_object(self.credential, peer_dict)
 417         else:
 418             slice = slices[0]
 419             if peer:
 420                 slice['peer_slice_id'] = slice_record.get('slice_id', None)
 421                 # unbind from peer so we can modify if necessary. Will bind back later
 422                 self.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname'])
 423                 #Update existing record (e.g. expires field) it with the latest info.
 424             if slice_record.get('expires'):
 425                 requested_expires = int(datetime_to_epoch(utcparse(slice_record['expires'])))
 426                 if requested_expires and slice['expires'] != requested_expires:
 427                     self.driver.shell.UpdateSlice( slice['slice_id'], {'expires' : requested_expires})
 428
 429         return slice
 430
 431     #def get_existing_persons(self, users):
 432     def verify_persons(self, slice_hrn, slice_record, users, peer, sfa_peer, options={}):
 433         users_by_email = {}
 434         users_by_site = defaultdict(list)
 435         users_dict = {}
 436         for user in users:
 437             user['urn'] = user['urn'].lower()
 438             hrn, type = urn_to_hrn(user['urn'])
 439             username = get_leaf(hrn)
 440             login_base = PlXrn(xrn=user['urn']).pl_login_base()
 441             user['username'] = username
 442             user['site'] = login_base
 443
 444             if 'email' in user:
 445                 user['email'] = user['email'].lower()
 446                 users_by_email[user['email']] = user
 447                 users_dict[user['email']] = user
 448             else:
 449                 users_by_site[user['site']].append(user)
 450
 451         # start building a list of existing users
 452         existing_user_ids = []
 453         existing_user_ids_filter = []
 454         if users_by_email:
 455             existing_user_ids_filter.extend(users_by_email.keys())
 456         if users_by_site:
 457             for login_base in users_by_site:
 458                 users = users_by_site[login_base]
 459                 for user in users:
 460                     existing_user_ids_filter.append(user['username']+'@geni.net')
 461         if existing_user_ids_filter:
 462             # get existing users by email
 463             existing_users = self.driver.shell.GetPersons({'email': existing_user_ids_filter},
 464                                                         ['person_id', 'key_ids', 'email'])
 465             existing_user_ids.extend([user['email'] for user in existing_users])
 466
 467         if users_by_site:
 468             # get a list of user sites (based on requeste user urns
 469             site_list = self.driver.shell.GetSites(users_by_site.keys(), \
 470                 ['site_id', 'login_base', 'person_ids'])
 471             # get all existing users at these sites
 472             sites = {}
 473             site_user_ids = []
 474             for site in site_list:
 475                 sites[site['site_id']] = site
 476                 site_user_ids.extend(site['person_ids'])
 477
 478             existing_site_persons_list = self.driver.shell.GetPersons(site_user_ids,
 479                                                                     ['person_id', 'key_ids', 'email', 'site_ids'])
 480
 481             # all requested users are either existing users or new (added) users
 482             for login_base in users_by_site:
 483                 requested_site_users = users_by_site[login_base]
 484                 for requested_user in requested_site_users:
 485                     user_found = False
 486                     for existing_user in existing_site_persons_list:
 487                         for site_id in existing_user['site_ids']:
 488                             if site_id in sites:
 489                                 site = sites[site_id]
 490                                 if login_base == site['login_base'] and \
 491                                    existing_user['email'].startswith(requested_user['username']+'@'):
 492                                     existing_user_ids.append(existing_user['email'])
 493                                     requested_user['email'] = existing_user['email']
 494                                     users_dict[existing_user['email']] = requested_user
 495                                     user_found = True
 496                                     break
 497                         if user_found:
 498                             break
 499
 500                     if user_found == False:
 501                         fake_email = requested_user['username'] + '@geni.net'
 502                         requested_user['email'] = fake_email
 503                         users_dict[fake_email] = requested_user
 504
 505         # requested slice users
 506         requested_user_ids = users_dict.keys()
 507         # existing slice users
 508         existing_slice_users_filter = {'person_id': slice_record.get('person_ids', [])}
 509         existing_slice_users = self.driver.shell.GetPersons(existing_slice_users_filter,
 510                                                           ['person_id', 'key_ids', 'email'])
 511         existing_slice_user_ids = [user['email'] for user in existing_slice_users]
 512
 513         # users to be added, removed or updated
 514         added_user_ids = set(requested_user_ids).difference(existing_user_ids)
 515         added_slice_user_ids = set(requested_user_ids).difference(existing_slice_user_ids)
 516         removed_user_ids = set(existing_slice_user_ids).difference(requested_user_ids)
 517         updated_user_ids = set(existing_slice_user_ids).intersection(requested_user_ids)
 518
 519         # Remove stale users (only if we are not appending).
 520         # Append by default.
 521         append = options.get('append', True)
 522         if append == False:
 523             for removed_user_id in removed_user_ids:
 524                 self.driver.shell.DeletePersonFromSlice(removed_user_id, slice_record['name'])
 525         # update_existing users
 526         updated_users_list = [user for user in users_dict.values() if user['email'] in \
 527           updated_user_ids]
 528         self.verify_keys(existing_slice_users, updated_users_list, peer, options)
 529
 530         added_persons = []
 531         # add new users
 532         for added_user_id in added_user_ids:
 533             added_user = users_dict[added_user_id]
 534             hrn, type = urn_to_hrn(added_user['urn'])
 535             person = {
 536                 'first_name': added_user.get('first_name', hrn),
 537                 'last_name': added_user.get('last_name', hrn),
 538                 'email': added_user_id,
 539                 'peer_person_id': None,
 540                 'keys': [],
 541                 'key_ids': added_user.get('key_ids', []),
 542             }
 543             person['person_id'] = self.driver.shell.AddPerson(person)
 544             if peer:
 545                 person['peer_person_id'] = added_user['person_id']
 546             added_persons.append(person)
 547
 548             # enable the account
 549             self.driver.shell.UpdatePerson(person['person_id'], {'enabled': True})
 550
 551             # add person to site
 552             self.driver.shell.AddPersonToSite(added_user_id, added_user['site'])
 553
 554             for key_string in added_user.get('keys', []):
 555                 key = {'key':key_string, 'key_type':'ssh'}
 556                 key['key_id'] = self.driver.shell.AddPersonKey(person['person_id'], key)
 557                 person['keys'].append(key)
 558
 559             # add the registry record
 560 #            if sfa_peer:
 561 #                peer_dict = {'type': 'user', 'hrn': hrn, 'peer_authority': sfa_peer, \
 562 #                    'pointer': person['person_id']}
 563 #                self.registry.register_peer_object(self.credential, peer_dict)
 564
 565         for added_slice_user_id in added_slice_user_ids.union(added_user_ids):
 566             # add person to the slice
 567             self.driver.shell.AddPersonToSlice(added_slice_user_id, slice_record['name'])
 568             # if this is a peer record then it should already be bound to a peer.
 569             # no need to return worry about it getting bound later
 570
 571         return added_persons
 572
 573
 574     def verify_keys(self, persons, users, peer, options={}):
 575         # existing keys
 576         key_ids = []
 577         for person in persons:
 578             key_ids.extend(person['key_ids'])
 579         keylist = self.driver.shell.GetKeys(key_ids, ['key_id', 'key'])
 580         keydict = {}
 581         for key in keylist:
 582             keydict[key['key']] = key['key_id']
 583         existing_keys = keydict.keys()
 584         persondict = {}
 585         for person in persons:
 586             persondict[person['email']] = person
 587
 588         # add new keys
 589         requested_keys = []
 590         updated_persons = []
 591         for user in users:
 592             user_keys = user.get('keys', [])
 593             updated_persons.append(user)
 594             for key_string in user_keys:
 595                 requested_keys.append(key_string)
 596                 if key_string not in existing_keys:
 597                     key = {'key': key_string, 'key_type': 'ssh'}
 598                     try:
 599                         if peer:
 600                             person = persondict[user['email']]
 601                             self.driver.shell.UnBindObjectFromPeer('person', person['person_id'], peer['shortname'])
 602                         key['key_id'] = self.driver.shell.AddPersonKey(user['email'], key)
 603                         if peer:
 604                             key_index = user_keys.index(key['key'])
 605                             remote_key_id = user['key_ids'][key_index]
 606                             self.driver.shell.BindObjectToPeer('key', key['key_id'], peer['shortname'], remote_key_id)
 607
 608                     finally:
 609                         if peer:
 610                             self.driver.shell.BindObjectToPeer('person', person['person_id'], peer['shortname'], user['person_id'])
 611
 612         # remove old keys (only if we are not appending)
 613         append = options.get('append', True)
 614         if append == False:
 615             removed_keys = set(existing_keys).difference(requested_keys)
 616             for existing_key_id in keydict:
 617                 if keydict[existing_key_id] in removed_keys:
 618                     try:
 619                         if peer:
 620                             self.driver.shell.UnBindObjectFromPeer('key', existing_key_id, peer['shortname'])
 621                         self.driver.shell.DeleteKey(existing_key_id)
 622                     except:
 623                         pass
 624
 625     def verify_slice_attributes(self, slice, requested_slice_attributes, options={}, admin=False):
 626         append = options.get('append', True)
 627         # get list of attributes users ar able to manage
 628         filter = {'category': '*slice*'}
 629         if not admin:
 630             filter['|roles'] = ['user']
 631         slice_attributes = self.driver.shell.GetTagTypes(filter)
 632         valid_slice_attribute_names = [attribute['tagname'] for attribute in slice_attributes]
 633
 634         # get sliver attributes
 635         added_slice_attributes = []
 636         removed_slice_attributes = []
 637         ignored_slice_attribute_names = []
 638         existing_slice_attributes = self.driver.shell.GetSliceTags({'slice_id': slice['slice_id']})
 639
 640         # get attributes that should be removed
 641         for slice_tag in existing_slice_attributes:
 642             if slice_tag['tagname'] in ignored_slice_attribute_names:
 643                 # If a slice already has a admin only role it was probably given to them by an
 644                 # admin, so we should ignore it.
 645                 ignored_slice_attribute_names.append(slice_tag['tagname'])
 646             else:
 647                 # If an existing slice attribute was not found in the request it should
 648                 # be removed
 649                 attribute_found=False
 650                 for requested_attribute in requested_slice_attributes:
 651                     if requested_attribute['name'] == slice_tag['tagname'] and \
 652                        requested_attribute['value'] == slice_tag['value']:
 653                         attribute_found=True
 654                         break
 655
 656             if not attribute_found and not append:
 657                 removed_slice_attributes.append(slice_tag)
 658
 659         # get attributes that should be added:
 660         for requested_attribute in requested_slice_attributes:
 661             # if the requested attribute wasn't found  we should add it
 662             if requested_attribute['name'] in valid_slice_attribute_names:
 663                 attribute_found = False
 664                 for existing_attribute in existing_slice_attributes:
 665                     if requested_attribute['name'] == existing_attribute['tagname'] and \
 666                        requested_attribute['value'] == existing_attribute['value']:
 667                         attribute_found=True
 668                         break
 669                 if not attribute_found:
 670                     added_slice_attributes.append(requested_attribute)
 671
 672
 673         # remove stale attributes
 674         for attribute in removed_slice_attributes:
 675             try:
 676                 self.driver.shell.DeleteSliceTag(attribute['slice_tag_id'])
 677             except Exception, e:
 678                 logger.warn('Failed to remove sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 679                                 % (slice['name'], attribute['value'],  attribute.get('node_id'), str(e)))
 680
 681         # add requested_attributes
 682         for attribute in added_slice_attributes:
 683             try:
 684                 self.driver.shell.AddSliceTag(slice['name'], attribute['name'], attribute['value'], attribute.get('node_id', None))
 685             except Exception, e:
 686                 logger.warn('Failed to add sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\
 687                                 % (slice['name'], attribute['value'],  attribute.get('node_id'), str(e)))
 688