sfa/importer/nitosimporter.py

   1
   2 import os
   3
   4 from sfa.util.config import Config
   5 from sfa.util.xrn import Xrn, get_leaf, get_authority, hrn_to_urn
   6
   7 from sfa.trust.gid import create_uuid
   8 from sfa.trust.certificate import convert_public_key, Keypair
   9
  10 from sfa.storage.alchemy import dbsession
  11 from sfa.storage.model import RegRecord, RegAuthority, RegSlice, RegNode, RegUser, RegKey
  12
  13 from sfa.nitos.nitosshell import NitosShell
  14 from sfa.nitos.nitosxrn import hostname_to_hrn, slicename_to_hrn, email_to_hrn, hrn_to_nitos_slicename, username_to_hrn
  15
  16 def _get_site_hrn(interface_hrn, site):
  17     hrn = ".".join([interface_hrn, site['name']])
  18     return hrn
  19
  20
  21 class NitosImporter:
  22
  23     def __init__ (self, auth_hierarchy, logger):
  24         self.auth_hierarchy = auth_hierarchy
  25         self.logger=logger
  26
  27     def add_options (self, parser):
  28         # we don't have any options for now
  29         pass
  30
  31     # hrn hash is initialized from current db
  32     # remember just-created records as we go
  33     # xxx might make sense to add a UNIQUE constraint in the db itself
  34     def remember_record_by_hrn (self, record):
  35         tuple = (record.type, record.hrn)
  36         if tuple in self.records_by_type_hrn:
  37             self.logger.warning ("NitosImporter.remember_record_by_hrn: duplicate (%s,%s)"%tuple)
  38             return
  39         self.records_by_type_hrn [ tuple ] = record
  40
  41     # ditto for pointer hash
  42     def remember_record_by_pointer (self, record):
  43         if record.pointer == -1:
  44             self.logger.warning ("NitosImporter.remember_record_by_pointer: pointer is void")
  45             return
  46         tuple = (record.type, record.pointer)
  47         if tuple in self.records_by_type_pointer:
  48             self.logger.warning ("NitosImporter.remember_record_by_pointer: duplicate (%s,%s)"%tuple)
  49             return
  50         self.records_by_type_pointer [ ( record.type, record.pointer,) ] = record
  51
  52     def remember_record (self, record):
  53         self.remember_record_by_hrn (record)
  54         self.remember_record_by_pointer (record)
  55
  56     def locate_by_type_hrn (self, type, hrn):
  57         return self.records_by_type_hrn.get ( (type, hrn), None)
  58
  59     def locate_by_type_pointer (self, type, pointer):
  60         return self.records_by_type_pointer.get ( (type, pointer), None)
  61
  62     # a convenience/helper function to see if a record is already known
  63     # a former, broken, attempt (in 2.1-9) had been made
  64     # to try and use 'pointer' as a first, most significant attempt
  65     # the idea being to preserve stuff as much as possible, and thus
  66     # to avoid creating a new gid in the case of a simple hrn rename
  67     # however this of course doesn't work as the gid depends on the hrn...
  68     #def locate (self, type, hrn=None, pointer=-1):
  69     #    if pointer!=-1:
  70     #        attempt = self.locate_by_type_pointer (type, pointer)
  71     #        if attempt : return attempt
  72     #    if hrn is not None:
  73     #        attempt = self.locate_by_type_hrn (type, hrn,)
  74     #        if attempt : return attempt
  75     #    return None
  76
  77     # this makes the run method a bit abtruse - out of the way
  78
  79     def run (self, options):
  80         config = Config ()
  81         interface_hrn = config.SFA_INTERFACE_HRN
  82         root_auth = config.SFA_REGISTRY_ROOT_AUTH
  83         shell = NitosShell (config)
  84
  85         ######## retrieve all existing SFA objects
  86         all_records = dbsession.query(RegRecord).all()
  87
  88         # create hash by (type,hrn)
  89         # we essentially use this to know if a given record is already known to SFA
  90         self.records_by_type_hrn = \
  91             dict ( [ ( (record.type, record.hrn) , record ) for record in all_records ] )
  92         # create hash by (type,pointer)
  93         self.records_by_type_pointer = \
  94             dict ( [ ( (record.type, record.pointer) , record ) for record in all_records
  95                      if record.pointer != -1] )
  96
  97         # initialize record.stale to True by default, then mark stale=False on the ones that are in use
  98         for record in all_records: record.stale=True
  99
 100         ######## retrieve NITOS data
 101         # Get site info
 102         # retrieve only required stuf
 103         site = shell.getTestbedInfo()
 104         sites = [site]
 105         # create a hash of sites by login_base
 106 #       # sites_by_login_base = dict ( [ ( site['login_base'], site ) for site in sites ] )
 107         # Get all NITOS users
 108         users = shell.getUsers()
 109         # create a hash of users by user_id
 110         users_by_id = dict ( [ ( user['user_id'], user) for user in users ] )
 111         # Get all NITOS public keys
 112         # accumulate key ids for keys retrieval
 113 #        key_ids = []
 114 #        for person in persons:
 115 #            key_ids.extend(person['key_ids'])
 116 #        keys = shell.GetKeys( {'peer_id': None, 'key_id': key_ids,
 117 #                               'key_type': 'ssh'} )
 118 #        # create a hash of keys by key_id
 119 #        keys_by_id = dict ( [ ( key['key_id'], key ) for key in keys ] )
 120         # create a dict user_id -> [ (nitos)keys ]
 121         keys_by_user_id = dict ( [ ( user['user_id'], user['keys']) for user in users ] )
 122         # Get all nitos nodes
 123         nodes = shell.getNodes()
 124         # create hash by node_id
 125         nodes_by_id = dict ( [ (node['node_id'], node) for node in nodes ] )
 126         # Get all nitos slices
 127         slices = shell.getSlices()
 128         # create hash by slice_id
 129         slices_by_id = dict ( [ (slice['slice_id'], slice) for slice in slices ] )
 130
 131
 132         # start importing
 133         for site in sites:
 134         #for i in [0]:
 135             site_hrn = _get_site_hrn(interface_hrn, site)
 136             # import if hrn is not in list of existing hrns or if the hrn exists
 137             # but its not a site record
 138             site_record=self.locate_by_type_hrn ('authority', site_hrn)
 139             if not site_record:
 140                 try:
 141                     urn = hrn_to_urn(site_hrn, 'authority')
 142                     if not self.auth_hierarchy.auth_exists(urn):
 143                         self.auth_hierarchy.create_auth(urn)
 144                     auth_info = self.auth_hierarchy.get_auth_info(urn)
 145                     site_record = RegAuthority(hrn=site_hrn, gid=auth_info.get_gid_object(),
 146                                                pointer=0,
 147                                                authority=get_authority(site_hrn))
 148                     site_record.just_created()
 149                     dbsession.add(site_record)
 150                     dbsession.commit()
 151                     self.logger.info("NitosImporter: imported authority (site) : %s" % site_record)
 152                     self.remember_record (site_record)
 153                 except:
 154                     # if the site import fails then there is no point in trying to import the
 155                     # site's child records (node, slices, persons), so skip them.
 156                     self.logger.log_exc("NitosImporter: failed to import site. Skipping child records")
 157                     continue
 158             else:
 159                 # xxx update the record ...
 160                 pass
 161             site_record.stale=False
 162
 163             # import node records
 164             for node in nodes:
 165                 site_auth = get_authority(site_hrn)
 166                 site_name = site['name']
 167                 node_hrn =  hostname_to_hrn(site_auth, site_name, node['name'])
 168                 # xxx this sounds suspicious
 169                 if len(node_hrn) > 64: node_hrn = node_hrn[:64]
 170                 node_record = self.locate_by_type_hrn ( 'node', node_hrn )
 171                 if not node_record:
 172                     try:
 173                         pkey = Keypair(create=True)
 174                         urn = hrn_to_urn(node_hrn, 'node')
 175                         node_gid = self.auth_hierarchy.create_gid(urn, create_uuid(), pkey)
 176                         node_record = RegNode (hrn=node_hrn, gid=node_gid,
 177                                                pointer =node['node_id'],
 178                                                authority=get_authority(node_hrn))
 179                         node_record.just_created()
 180                         dbsession.add(node_record)
 181                         dbsession.commit()
 182                         self.logger.info("NitosImporter: imported node: %s" % node_record)
 183                         self.remember_record (node_record)
 184                     except:
 185                            self.logger.log_exc("NitosImporter: failed to import node")
 186                 else:
 187                     # xxx update the record ...
 188                     pass
 189                 node_record.stale=False
 190
 191
 192             # import users
 193             for user in users:
 194                 user_hrn = username_to_hrn(interface_hrn, site['name'], user['username'])
 195                 # xxx suspicious again
 196                 if len(user_hrn) > 64: user_hrn = user_hrn[:64]
 197                 user_urn = hrn_to_urn(user_hrn, 'user')
 198
 199                 user_record = self.locate_by_type_hrn ( 'user', user_hrn)
 200
 201                 # return a tuple pubkey (a nitos key object) and pkey (a Keypair object)
 202                 def init_user_key (user):
 203                     pubkey = None
 204                     pkey = None
 205                     if  user['keys']:
 206                         # randomly pick first key in set
 207                         for key in user['keys']:
 208                              pubkey = key
 209                              try:
 210                                 pkey = convert_public_key(pubkey)
 211                                 break
 212                              except:
 213                                 continue
 214                         if not pkey:
 215                             self.logger.warn('NitosImporter: unable to convert public key for %s' % user_hrn)
 216                             pkey = Keypair(create=True)
 217                     else:
 218                         # the user has no keys. Creating a random keypair for the user's gid
 219                         self.logger.warn("NitosImporter: user %s does not have a NITOS public key"%user_hrn)
 220                         pkey = Keypair(create=True)
 221                     return (pubkey, pkey)
 222
 223                 # new user
 224                 try:
 225                     if not user_record:
 226                         (pubkey,pkey) = init_user_key (user)
 227                         user_gid = self.auth_hierarchy.create_gid(user_urn, create_uuid(), pkey)
 228                         user_gid.set_email(user['email'])
 229                         user_record = RegUser (hrn=user_hrn, gid=user_gid,
 230                                                  pointer=user['user_id'],
 231                                                  authority=get_authority(user_hrn),
 232                                                  email=user['email'])
 233                         if pubkey:
 234                             user_record.reg_keys=[RegKey (pubkey)]
 235                         else:
 236                             self.logger.warning("No key found for user %s"%user_record)
 237                         user_record.just_created()
 238                         dbsession.add (user_record)
 239                         dbsession.commit()
 240                         self.logger.info("NitosImporter: imported user: %s" % user_record)
 241                         self.remember_record ( user_record )
 242                     else:
 243                         # update the record ?
 244                         # if user's primary key has changed then we need to update the
 245                         # users gid by forcing an update here
 246                         sfa_keys = user_record.reg_keys
 247                         def key_in_list (key,sfa_keys):
 248                             for reg_key in sfa_keys:
 249                                 if reg_key.key==key: return True
 250                             return False
 251                         # is there a new key in NITOS ?
 252                         new_keys=False
 253                         for key in user['keys']:
 254                             if not key_in_list (key,sfa_keys):
 255                                 new_keys = True
 256                         if new_keys:
 257                             (pubkey,pkey) = init_user_key (user)
 258                             user_gid = self.auth_hierarchy.create_gid(user_urn, create_uuid(), pkey)
 259                             if not pubkey:
 260                                 user_record.reg_keys=[]
 261                             else:
 262                                 user_record.reg_keys=[ RegKey (pubkey)]
 263                             self.logger.info("NitosImporter: updated user: %s" % user_record)
 264                     user_record.email = user['email']
 265                     dbsession.commit()
 266                     user_record.stale=False
 267                 except:
 268                     self.logger.log_exc("NitosImporter: failed to import user %s %s"%(user['user_id'],user['email']))
 269
 270
 271             # import slices
 272             for slice in slices:
 273                 slice_hrn = slicename_to_hrn(interface_hrn, site['name'], slice['slice_name'])
 274                 slice_record = self.locate_by_type_hrn ('slice', slice_hrn)
 275                 if not slice_record:
 276                     try:
 277                         pkey = Keypair(create=True)
 278                         urn = hrn_to_urn(slice_hrn, 'slice')
 279                         slice_gid = self.auth_hierarchy.create_gid(urn, create_uuid(), pkey)
 280                         slice_record = RegSlice (hrn=slice_hrn, gid=slice_gid,
 281                                                  pointer=slice['slice_id'],
 282                                                  authority=get_authority(slice_hrn))
 283                         slice_record.just_created()
 284                         dbsession.add(slice_record)
 285                         dbsession.commit()
 286                         self.logger.info("NitosImporter: imported slice: %s" % slice_record)
 287                         self.remember_record ( slice_record )
 288                     except:
 289                         self.logger.log_exc("NitosImporter: failed to import slice")
 290                 else:
 291                     # xxx update the record ...
 292                     self.logger.warning ("Slice update not yet implemented")
 293                     pass
 294                 # record current users affiliated with the slice
 295                 slice_record.reg_researchers = \
 296                       [ self.locate_by_type_pointer ('user',int(user_id)) for user_id in slice['user_id'] ]
 297                 dbsession.commit()
 298                 slice_record.stale=False
 299
 300
 301         ### remove stale records
 302         # special records must be preserved
 303         system_hrns = [interface_hrn, root_auth, interface_hrn + '.slicemanager']
 304         for record in all_records:
 305             if record.hrn in system_hrns:
 306                 record.stale=False
 307             if record.peer_authority:
 308                 record.stale=False
 309
 310         for record in all_records:
 311             try:        stale=record.stale
 312             except:
 313                 stale=True
 314                 self.logger.warning("stale not found with %s"%record)
 315             if stale:
 316                 self.logger.info("NitosImporter: deleting stale record: %s" % record)
 317                 dbsession.delete(record)
 318                 dbsession.commit()
 319
 320
 321
 322 if __name__ == "__main__":
 323        from sfa.util.sfalogging import logger
 324        nitosimporter = NitosImporter("pla.nitos", logger)
 325        nitosimporter.run(None)