sfa/nitos/nitosslices.py

   1 from collections import defaultdict
   2
   3 from sfa.util.sfatime import utcparse, datetime_to_epoch
   4 from sfa.util.sfalogging import logger
   5 from sfa.util.xrn import Xrn, get_leaf, get_authority, urn_to_hrn
   6
   7 from sfa.rspecs.rspec import RSpec
   8
   9 from sfa.nitos.nitosxrn import NitosXrn, hrn_to_nitos_slicename, xrn_to_hostname, xrn_to_channel
  10
  11 MAXINT =  2L**31-1
  12
  13 class NitosSlices:
  14
  15     def __init__(self, driver):
  16         self.driver = driver
  17
  18
  19     def get_sfa_peer(self, xrn):
  20         hrn, type = urn_to_hrn(xrn)
  21
  22         # return the authority for this hrn or None if we are the authority
  23         sfa_peer = None
  24         slice_authority = get_authority(hrn)
  25         site_authority = get_authority(slice_authority)
  26
  27         if site_authority != self.driver.hrn:
  28             sfa_peer = site_authority
  29
  30         return sfa_peer
  31
  32     def verify_slice_leases_nodes(self, slice, rspec_requested_nodes):
  33         nodes = self.driver.shell.getNodes({}, [])
  34
  35         requested_nodes = []
  36         for node in rspec_requested_nodes:
  37              requested_node = {}
  38              nitos_nodes = []
  39              nitos_nodes.extend(nodes)
  40              slice_name = hrn_to_nitos_slicename(node['slice_id'])
  41              if slice_name != slice['slice_name']:
  42                  continue
  43              hostname = xrn_to_hostname(node['component_id'])
  44              nitos_node = self.driver.filter_nitos_results(nitos_nodes, {'hostname': hostname})
  45              if not nitos_node:
  46                  continue
  47              nitos_node = nitos_node[0]
  48              # fill the requested node with nitos ids
  49              requested_node['slice_id'] = slice['slice_id']
  50              requested_node['node_id'] = nitos_node['node_id']
  51              requested_node['start_time'] = node['start_time']
  52              requested_node['end_time'] = str(int(node['duration']) * int(self.driver.testbedInfo['grain']) + int(node['start_time']))
  53              requested_nodes.append(requested_node)
  54
  55         # get actual nodes reservation data for the slice
  56         reserved_nodes = self.driver.filter_nitos_results(self.driver.shell.getReservedNodes({}, []), {'slice_id': slice['slice_id']})
  57
  58         reserved_nodes_by_id = {}
  59         for node in reserved_nodes:
  60              reserved_nodes_by_id[node['reservation_id']] = {'slice_id': node['slice_id'], \
  61                                       'node_id': node['node_id'], 'start_time': node['start_time'], \
  62                                       'end_time': node['end_time']}
  63
  64         added_nodes = []
  65         kept_nodes_id = []
  66         deleted_nodes_id = []
  67         for reservation_id in reserved_nodes_by_id:
  68              if reserved_nodes_by_id[reservation_id] not in requested_nodes:
  69                  deleted_nodes_id.append(reservation_id)
  70              else:
  71                  kept_nodes_id.append(reservation_id)
  72                  requested_nodes.remove(reserved_nodes_by_id[reservation_id])
  73         added_nodes = requested_nodes
  74
  75
  76         try:
  77             deleted=self.driver.shell.releaseNodes({'reservation_ids': deleted_nodes_id})
  78             for node in added_nodes:
  79                 added=self.driver.shell.reserveNodes({'slice_id': slice['slice_id'], 'start_time': node['start_time'], 'end_time': node['end_time'], 'nodes': [node['node_id']]})
  80
  81         except:
  82             logger.log_exc('Failed to add/remove slice leases nodes')
  83
  84         return added_nodes
  85
  86
  87     def verify_slice_leases_channels(self, slice, rspec_requested_channels):
  88         channels = self.driver.shell.getChannels({}, [])
  89
  90         requested_channels = []
  91         for channel in rspec_requested_channels:
  92              requested_channel = {}
  93              nitos_channels = []
  94              nitos_channels.extend(channels)
  95              slice_name = hrn_to_nitos_slicename(channel['slice_id'])
  96              if slice_name != slice['slice_name']:
  97                  continue
  98              channel_num = xrn_to_channel(channel['component_id'])
  99              nitos_channel = self.driver.filter_nitos_results(nitos_channels, {'channel': channel_num})[0]
 100              # fill the requested channel with nitos ids
 101              requested_channel['slice_id'] = slice['slice_id']
 102              requested_channel['channel_id'] = nitos_channel['channel_id']
 103              requested_channel['start_time'] = channel['start_time']
 104              requested_channel['end_time'] = str(int(channel['duration']) * int(self.driver.testbedInfo['grain']) + int(channel['start_time']))
 105              requested_channels.append(requested_channel)
 106
 107         # get actual channel reservation data for the slice
 108         reserved_channels = self.driver.filter_nitos_results(self.driver.shell.getReservedChannels(), {'slice_id': slice['slice_id']})
 109
 110         reserved_channels_by_id = {}
 111         for channel in reserved_channels:
 112              reserved_channels_by_id[channel['reservation_id']] = {'slice_id': channel['slice_id'], \
 113                                       'channel_id': channel['channel_id'], 'start_time': channel['start_time'], \
 114                                       'end_time': channel['end_time']}
 115
 116         added_channels = []
 117         kept_channels_id = []
 118         deleted_channels_id = []
 119         for reservation_id in reserved_channels_by_id:
 120              if reserved_channels_by_id[reservation_id] not in requested_channels:
 121                  deleted_channels_id.append(reservation_id)
 122              else:
 123                  kept_channels_id.append(reservation_id)
 124                  requested_channels.remove(reserved_channels_by_id[reservation_id])
 125         added_channels = requested_channels
 126
 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=None):
 156         if options is None: options={}
 157         slicename = hrn_to_nitos_slicename(slice_hrn)
 158         slices = self.driver.shell.getSlices({}, [])
 159         slices = self.driver.filter_nitos_results(slices, {'slice_name': slicename})
 160         if not slices:
 161             slice = {'slice_name': slicename}
 162             # add the slice
 163             slice['slice_id'] = self.driver.shell.addSlice(slice)
 164             slice['node_ids'] = []
 165             slice['user_ids'] = []
 166         else:
 167             slice = slices[0]
 168
 169         return slice
 170
 171     def verify_users(self, slice_hrn, slice_record, users, sfa_peer, options=None):
 172         if options is None: options={}
 173         # get slice info
 174         slicename = hrn_to_nitos_slicename(slice_hrn)
 175         slices = self.driver.shell.getSlices({}, [])
 176         slice = self.driver.filter_nitos_results(slices, {'slice_name': slicename})[0]
 177         added_users = []
 178         #get users info
 179         users_info = []
 180         for user in users:
 181              user_urn = user['urn']
 182              user_hrn, type = urn_to_hrn(user_urn)
 183              username = str(user_hrn).split('.')[-1]
 184              email = user['email']
 185              # look for the user according to his username, email...
 186              nitos_users = self.driver.filter_nitos_results(self.driver.shell.getUsers(), {'username': username})
 187              if not nitos_users:
 188                  nitos_users = self.driver.filter_nitos_results(self.driver.shell.getUsers(), {'email': email})
 189
 190              if not nitos_users:
 191                  # create the user
 192                  user_id = self.driver.shell.addUser({'username': email.split('@')[0], 'email': email})
 193                  added_users.append(user_id)
 194                  # add user keys
 195                  for key in user['keys']:
 196                       self.driver.shell.addUserKey({'user_id': user_id, 'key': key, 'slice_id': slice['slice_id']})
 197                  # add the user to the slice
 198                  self.driver.shell.addUserToSlice({'slice_id': slice['slice_id'], 'user_id': user_id})
 199              else:
 200                  # check if the users are in the slice
 201                  for user in nitos_users:
 202                       if not user['user_id'] in slice['user_ids']:
 203                           self.driver.shell.addUserToSlice({'slice_id': slice['slice_id'], 'user_id': user['user_id']})
 204
 205         return added_users
 206
 207
 208     def verify_keys(self, persons, users, options=None):
 209         if options is None: options={}
 210         # existing keys
 211         key_ids = []
 212         for person in persons:
 213             key_ids.extend(person['key_ids'])
 214         keylist = self.driver.shell.GetKeys(key_ids, ['key_id', 'key'])
 215         keydict = {}
 216         for key in keylist:
 217             keydict[key['key']] = key['key_id']
 218         existing_keys = keydict.keys()
 219         persondict = {}
 220         for person in persons:
 221             persondict[person['email']] = person
 222
 223         # add new keys
 224         requested_keys = []
 225         updated_persons = []
 226         for user in users:
 227             user_keys = user.get('keys', [])
 228             updated_persons.append(user)
 229             for key_string in user_keys:
 230                 requested_keys.append(key_string)
 231                 if key_string not in existing_keys:
 232                     key = {'key': key_string, 'key_type': 'ssh'}
 233                     try:
 234                         if peer:
 235                             person = persondict[user['email']]
 236                             self.driver.shell.UnBindObjectFromPeer('person', person['person_id'], peer['shortname'])
 237                         key['key_id'] = self.driver.shell.AddPersonKey(user['email'], key)
 238                         if peer:
 239                             key_index = user_keys.index(key['key'])
 240                             remote_key_id = user['key_ids'][key_index]
 241                             self.driver.shell.BindObjectToPeer('key', key['key_id'], peer['shortname'], remote_key_id)
 242
 243                     finally:
 244                         if peer:
 245                             self.driver.shell.BindObjectToPeer('person', person['person_id'], peer['shortname'], user['person_id'])
 246
 247         # remove old keys (only if we are not appending)
 248         append = options.get('append', True)
 249         if append == False:
 250             removed_keys = set(existing_keys).difference(requested_keys)
 251             for existing_key_id in keydict:
 252                 if keydict[existing_key_id] in removed_keys:
 253                     try:
 254                         if peer:
 255                             self.driver.shell.UnBindObjectFromPeer('key', existing_key_id, peer['shortname'])
 256                         self.driver.shell.DeleteKey(existing_key_id)
 257                     except:
 258                         pass
 259
 260