sfa/nitos/nitosslices.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.nitos.nitosxrn import NitosXrn, hrn_to_nitos_slicename, xrn_to_hostname
  11
  12 MAXINT =  2L**31-1
  13
  14 class NitosSlices:
  15
  16     def __init__(self, driver):
  17         self.driver = driver
  18
  19
  20     def get_sfa_peer(self, xrn):
  21         hrn, type = urn_to_hrn(xrn)
  22
  23         # return the authority for this hrn or None if we are the authority
  24         sfa_peer = None
  25         slice_authority = get_authority(hrn)
  26         site_authority = get_authority(slice_authority)
  27
  28         if site_authority != self.driver.hrn:
  29             sfa_peer = site_authority
  30
  31         return sfa_peer
  32
  33     def verify_slice_leases_nodes(self, slice, rspec_requested_nodes):
  34         nodes = self.driver.shell.getNodes({}, [])
  35
  36         requested_nodes = []
  37         for node in rspec_requested_nodes:
  38              requested_node = {}
  39              nitos_nodes = []
  40              nitos_nodes.extend(nodes)
  41              slice_name = hrn_to_nitos_slicename(node['slice_id'])
  42              if slice_name != slice['slice_name']:
  43                  continue
  44              hostname = xrn_to_hostname(node['component_id'])
  45              nitos_node = self.driver.filter_nitos_results(nitos_nodes, {'hostname': hostname})[0]
  46              # fill the requested node with nitos ids
  47              requested_node['slice_id'] = slice['slice_id']
  48              requested_node['node_id'] = nitos_node['node_id']
  49              requested_node['start_time'] = node['start_time']
  50              requested_node['end_time'] = str(int(node['duration']) * int(self.driver.testbedInfo['grain']) + int(node['start_time']))
  51              requested_nodes.append(requested_node)
  52
  53         # get actual nodes reservation data for the slice
  54         reserved_nodes = self.driver.filter_nitos_results(self.driver.shell.getReservedNodes({}, []), {'slice_id': slice['slice_id']})
  55
  56         reserved_nodes_by_id = {}
  57         for node in reserved_nodes:
  58              reserved_nodes_by_id[node['reservation_id']] = {'slice_id': node['slice_id'], \
  59                                       'node_id': node['node_id'], 'start_time': node['start_time'], \
  60                                       'end_time': node['end_time']}
  61
  62         added_nodes = []
  63         kept_nodes_id = []
  64         deleted_nodes_id = []
  65         for reservation_id in reserved_nodes_by_id:
  66              if reserved_nodes_by_id[reservation_id] not in requested_nodes:
  67                  deleted_nodes_id.append(reservation_id)
  68              else:
  69                  kept_nodes_id.append(reservation_id)
  70                  requested_nodes.remove(reserved_nodes_by_id[reservation_id])
  71         added_nodes = requested_nodes
  72
  73         print "NODES: \nAdded: %s \nDeleted: %s\nKept: %s" %(added_nodes,deleted_nodes_id,kept_nodes_id)
  74
  75         try:
  76             deleted=self.driver.shell.releaseNodes({'reservation_ids': deleted_nodes_id})
  77             for node in added_nodes:
  78                 added=self.driver.shell.reserveNodes({'slice_id': slice['slice_id'], 'start_time': node['start_time'], 'end_time': node['end_time'], 'nodes': [node['node_id']]})
  79
  80         except:
  81             logger.log_exc('Failed to add/remove slice leases nodes')
  82
  83         return added_nodes
  84
  85
  86     def verify_slice_leases_channels(self, slice, rspec_requested_channels):
  87         channels = self.driver.shell.getChannels({}, [])
  88
  89         requested_channels = []
  90         for channel in rspec_requested_channels:
  91              requested_channel = {}
  92              nitos_channels = []
  93              nitos_channels.extend(channels)
  94              slice_name = hrn_to_nitos_slicename(channel['slice_id'])
  95              if slice_name != slice['slice_name']:
  96                  continue
  97              channel_num = channel['channel_num']
  98              nitos_channel = self.driver.filter_nitos_results(nitos_channels, {'channel': channel_num})[0]
  99              # fill the requested channel with nitos ids
 100              requested_channel['slice_id'] = slice['slice_id']
 101              requested_channel['channel_id'] = nitos_channel['channel_id']
 102              requested_channel['start_time'] = channel['start_time']
 103              requested_channel['end_time'] = str(int(channel['duration']) * int(self.driver.testbedInfo['grain']) + int(channel['start_time']))
 104              requested_channels.append(requested_channel)
 105
 106         # get actual channel reservation data for the slice
 107         reserved_channels = self.driver.filter_nitos_results(self.driver.shell.getReservedChannels(), {'slice_id': slice['slice_id']})
 108
 109         reserved_channels_by_id = {}
 110         for channel in reserved_channels:
 111              reserved_channels_by_id[channel['reservation_id']] = {'slice_id': channel['slice_id'], \
 112                                       'channel_id': channel['channel_id'], 'start_time': channel['start_time'], \
 113                                       'end_time': channel['end_time']}
 114
 115         added_channels = []
 116         kept_channels_id = []
 117         deleted_channels_id = []
 118         for reservation_id in reserved_channels_by_id:
 119              if reserved_channels_by_id[reservation_id] not in requested_channels:
 120                  deleted_channels_id.append(reservation_id)
 121              else:
 122                  kept_channels_id.append(reservation_id)
 123                  requested_channels.remove(reserved_channels_by_id[reservation_id])
 124         added_channels = requested_channels
 125
 126         print "CHANNELS: \nAdded: %s \nDeleted: %s\nKept: %s" %(added_channels,deleted_channels_id,kept_channels_id)
 127
 128         try:
 129             deleted=self.driver.shell.releaseChannels({'reservation_ids': deleted_channels_id})
 130             for channel in added_channels:
 131                 added=self.driver.shell.reserveChannels({'slice_id': slice['slice_id'], 'start_time': channel['start_time'], 'end_time': channel['end_time'], 'channels': [channel['channel_id']]})
 132
 133         except:
 134             logger.log_exc('Failed to add/remove slice leases channels')
 135
 136         return added_channels
 137
 138
 139     def free_egre_key(self):
 140         used = set()
 141         for tag in self.driver.shell.GetSliceTags({'tagname': 'egre_key'}):
 142                 used.add(int(tag['value']))
 143
 144         for i in range(1, 256):
 145             if i not in used:
 146                 key = i
 147                 break
 148         else:
 149             raise KeyError("No more EGRE keys available")
 150
 151         return str(key)
 152
 153
 154
 155     def verify_slice(self, slice_hrn, slice_record, sfa_peer, options={}):
 156         slicename = hrn_to_nitos_slicename(slice_hrn)
 157         slices = self.driver.shell.getSlices({}, [])
 158         slices = self.driver.filter_nitos_results(slices, {'slice_name': slicename})
 159         if not slices:
 160             slice = {'name': slicename}
 161             # add the slice
 162             slice['slice_id'] = self.driver.shell.addSlice(slice)
 163             slice['node_ids'] = []
 164             slice['user_ids'] = []
 165         else:
 166             slice = slices[0]
 167
 168         return slice
 169
 170     #def get_existing_persons(self, users):
 171     def verify_users(self, slice_hrn, slice_record, users, sfa_peer, options={}):
 172
 173         slice_user_ids = slice_record['user_ids']
 174         all_users = self.driver.shell.getUsers()
 175         # filter slice users
 176         slice_users = [user for user in all_users if user['user_id'] in slice_user_ids]
 177
 178         slicename = hrn_to_nitos_slicename(slice_hrn)
 179         slices = self.driver.shell.getSlices({}, [])
 180         slices = self.driver.filter_nitos_results(slices, {'slice_name': slicename})
 181
 182         slice_user
 183         users_by_email = {}
 184         users_by_site = defaultdict(list)
 185         users_dict = {}
 186         for user in users:
 187             user['urn'] = user['urn'].lower()
 188             hrn, type = urn_to_hrn(user['urn'])
 189             username = get_leaf(hrn)
 190             login_base = PlXrn(xrn=user['urn']).pl_login_base()
 191             user['username'] = username
 192             user['site'] = login_base
 193
 194             if 'email' in user:
 195                 user['email'] = user['email'].lower()
 196                 users_by_email[user['email']] = user
 197                 users_dict[user['email']] = user
 198             else:
 199                 users_by_site[user['site']].append(user)
 200
 201         # start building a list of existing users
 202         existing_user_ids = []
 203         existing_user_ids_filter = []
 204         if users_by_email:
 205             existing_user_ids_filter.extend(users_by_email.keys())
 206         if users_by_site:
 207             for login_base in users_by_site:
 208                 users = users_by_site[login_base]
 209                 for user in users:
 210                     existing_user_ids_filter.append(user['username']+'@geni.net')
 211         if existing_user_ids_filter:
 212             # get existing users by email
 213             existing_users = self.driver.shell.GetPersons({'email': existing_user_ids_filter},
 214                                                         ['person_id', 'key_ids', 'email'])
 215             existing_user_ids.extend([user['email'] for user in existing_users])
 216
 217         if users_by_site:
 218             # get a list of user sites (based on requeste user urns
 219             site_list = self.driver.shell.GetSites(users_by_site.keys(), \
 220                 ['site_id', 'login_base', 'person_ids'])
 221             # get all existing users at these sites
 222             sites = {}
 223             site_user_ids = []
 224             for site in site_list:
 225                 sites[site['site_id']] = site
 226                 site_user_ids.extend(site['person_ids'])
 227
 228             existing_site_persons_list = self.driver.shell.GetPersons(site_user_ids,
 229                                                                     ['person_id', 'key_ids', 'email', 'site_ids'])
 230
 231             # all requested users are either existing users or new (added) users
 232             for login_base in users_by_site:
 233                 requested_site_users = users_by_site[login_base]
 234                 for requested_user in requested_site_users:
 235                     user_found = False
 236                     for existing_user in existing_site_persons_list:
 237                         for site_id in existing_user['site_ids']:
 238                             if site_id in sites:
 239                                 site = sites[site_id]
 240                                 if login_base == site['login_base'] and \
 241                                    existing_user['email'].startswith(requested_user['username']+'@'):
 242                                     existing_user_ids.append(existing_user['email'])
 243                                     requested_user['email'] = existing_user['email']
 244                                     users_dict[existing_user['email']] = requested_user
 245                                     user_found = True
 246                                     break
 247                         if user_found:
 248                             break
 249
 250                     if user_found == False:
 251                         fake_email = requested_user['username'] + '@geni.net'
 252                         requested_user['email'] = fake_email
 253                         users_dict[fake_email] = requested_user
 254
 255         # requested slice users
 256         requested_user_ids = users_dict.keys()
 257         # existing slice users
 258         existing_slice_users_filter = {'person_id': slice_record.get('person_ids', [])}
 259         existing_slice_users = self.driver.shell.GetPersons(existing_slice_users_filter,
 260                                                           ['person_id', 'key_ids', 'email'])
 261         existing_slice_user_ids = [user['email'] for user in existing_slice_users]
 262
 263         # users to be added, removed or updated
 264         added_user_ids = set(requested_user_ids).difference(existing_user_ids)
 265         added_slice_user_ids = set(requested_user_ids).difference(existing_slice_user_ids)
 266         removed_user_ids = set(existing_slice_user_ids).difference(requested_user_ids)
 267         updated_user_ids = set(existing_slice_user_ids).intersection(requested_user_ids)
 268
 269         # Remove stale users (only if we are not appending).
 270         # Append by default.
 271         append = options.get('append', True)
 272         if append == False:
 273             for removed_user_id in removed_user_ids:
 274                 self.driver.shell.DeletePersonFromSlice(removed_user_id, slice_record['name'])
 275         # update_existing users
 276         updated_users_list = [user for user in users_dict.values() if user['email'] in \
 277           updated_user_ids]
 278         self.verify_keys(existing_slice_users, updated_users_list, peer, options)
 279
 280         added_persons = []
 281         # add new users
 282         for added_user_id in added_user_ids:
 283             added_user = users_dict[added_user_id]
 284             hrn, type = urn_to_hrn(added_user['urn'])
 285             person = {
 286                 'first_name': added_user.get('first_name', hrn),
 287                 'last_name': added_user.get('last_name', hrn),
 288                 'email': added_user_id,
 289                 'peer_person_id': None,
 290                 'keys': [],
 291                 'key_ids': added_user.get('key_ids', []),
 292             }
 293             person['person_id'] = self.driver.shell.AddPerson(person)
 294             if peer:
 295                 person['peer_person_id'] = added_user['person_id']
 296             added_persons.append(person)
 297
 298             # enable the account
 299             self.driver.shell.UpdatePerson(person['person_id'], {'enabled': True})
 300
 301             # add person to site
 302             self.driver.shell.AddPersonToSite(added_user_id, added_user['site'])
 303
 304             for key_string in added_user.get('keys', []):
 305                 key = {'key':key_string, 'key_type':'ssh'}
 306                 key['key_id'] = self.driver.shell.AddPersonKey(person['person_id'], key)
 307                 person['keys'].append(key)
 308
 309             # add the registry record
 310 #            if sfa_peer:
 311 #                peer_dict = {'type': 'user', 'hrn': hrn, 'peer_authority': sfa_peer, \
 312 #                    'pointer': person['person_id']}
 313 #                self.registry.register_peer_object(self.credential, peer_dict)
 314
 315         for added_slice_user_id in added_slice_user_ids.union(added_user_ids):
 316             # add person to the slice
 317             self.driver.shell.AddPersonToSlice(added_slice_user_id, slice_record['name'])
 318             # if this is a peer record then it should already be bound to a peer.
 319             # no need to return worry about it getting bound later
 320
 321         return added_persons
 322
 323
 324     def verify_keys(self, persons, users, options={}):
 325         # existing keys
 326         key_ids = []
 327         for person in persons:
 328             key_ids.extend(person['key_ids'])
 329         keylist = self.driver.shell.GetKeys(key_ids, ['key_id', 'key'])
 330         keydict = {}
 331         for key in keylist:
 332             keydict[key['key']] = key['key_id']
 333         existing_keys = keydict.keys()
 334         persondict = {}
 335         for person in persons:
 336             persondict[person['email']] = person
 337
 338         # add new keys
 339         requested_keys = []
 340         updated_persons = []
 341         for user in users:
 342             user_keys = user.get('keys', [])
 343             updated_persons.append(user)
 344             for key_string in user_keys:
 345                 requested_keys.append(key_string)
 346                 if key_string not in existing_keys:
 347                     key = {'key': key_string, 'key_type': 'ssh'}
 348                     try:
 349                         if peer:
 350                             person = persondict[user['email']]
 351                             self.driver.shell.UnBindObjectFromPeer('person', person['person_id'], peer['shortname'])
 352                         key['key_id'] = self.driver.shell.AddPersonKey(user['email'], key)
 353                         if peer:
 354                             key_index = user_keys.index(key['key'])
 355                             remote_key_id = user['key_ids'][key_index]
 356                             self.driver.shell.BindObjectToPeer('key', key['key_id'], peer['shortname'], remote_key_id)
 357
 358                     finally:
 359                         if peer:
 360                             self.driver.shell.BindObjectToPeer('person', person['person_id'], peer['shortname'], user['person_id'])
 361
 362         # remove old keys (only if we are not appending)
 363         append = options.get('append', True)
 364         if append == False:
 365             removed_keys = set(existing_keys).difference(requested_keys)
 366             for existing_key_id in keydict:
 367                 if keydict[existing_key_id] in removed_keys:
 368                     try:
 369                         if peer:
 370                             self.driver.shell.UnBindObjectFromPeer('key', existing_key_id, peer['shortname'])
 371                         self.driver.shell.DeleteKey(existing_key_id)
 372                     except:
 373                         pass
 374
 375