sfa/importer/slabimporter.py

   1 import sys
   2
   3 from sfa.util.config import Config
   4 from sfa.util.xrn import Xrn, get_authority, hrn_to_urn
   5
   6 from sfa.senslab.slabdriver import SlabDriver
   7
   8 from sfa.trust.certificate import Keypair, convert_public_key
   9 from sfa.trust.gid import create_uuid
  10
  11 from sfa.storage.alchemy import dbsession
  12 from sfa.storage.model import RegRecord, RegAuthority, RegSlice, RegNode, \
  13                                                     RegUser, RegKey
  14
  15
  16 from sqlalchemy.exc import SQLAlchemyError
  17
  18
  19 def _get_site_hrn(site):
  20     hrn = site['name']
  21     return hrn
  22
  23 class SlabImporter:
  24
  25     def __init__ (self, auth_hierarchy, loc_logger):
  26         self.auth_hierarchy = auth_hierarchy
  27         self.logger = loc_logger
  28         self.logger.setLevelDebug()
  29         #retrieve all existing SFA objects
  30         self.all_records = dbsession.query(RegRecord).all()
  31
  32         # initialize record.stale to True by default,
  33         # then mark stale=False on the ones that are in use
  34         for record in self.all_records:
  35             record.stale = True
  36         #create hash by (type,hrn)
  37         #used  to know if a given record is already known to SFA
  38         self.records_by_type_hrn = \
  39             dict([( (record.type,record.hrn), record) \
  40                                         for record in self.all_records])
  41
  42         self.users_rec_by_email = \
  43             dict([ (record.email, record) \
  44                 for record in self.all_records if record.type == 'user'])
  45
  46         # create hash by (type,pointer)
  47         self.records_by_type_pointer = \
  48             dict([ ( (str(record.type), record.pointer) , record) \
  49                 for record in self.all_records  if record.pointer != -1])
  50
  51
  52
  53     @staticmethod
  54     def hostname_to_hrn_escaped(root_auth, hostname):
  55         return '.'.join( [root_auth, Xrn.escape(hostname)] )
  56
  57
  58     @staticmethod
  59     def slicename_to_hrn(person_hrn):
  60         return  (person_hrn +'_slice')
  61
  62     def add_options (self, parser):
  63         # we don't have any options for now
  64         pass
  65
  66     def find_record_by_type_hrn(self, record_type, hrn):
  67         return self.records_by_type_hrn.get ( (record_type, hrn), None)
  68
  69     def locate_by_type_pointer (self, record_type, pointer):
  70         ret = self.records_by_type_pointer.get ( (record_type, pointer), None)
  71         return ret
  72
  73     def update_just_added_records_dict (self, record):
  74         rec_tuple = (record.type, record.hrn)
  75         if rec_tuple in self.records_by_type_hrn:
  76             self.logger.warning ("SlabImporter.update_just_added_records_dict:\
  77                         duplicate (%s,%s)"%rec_tuple)
  78             return
  79         self.records_by_type_hrn [ rec_tuple ] = record
  80
  81     def import_sites_and_nodes(self, slabdriver):
  82         sites_listdict  = slabdriver.slab_api.GetSites()
  83         nodes_listdict  = slabdriver.slab_api.GetNodes()
  84         nodes_by_id = dict([(node['node_id'],node) for node in nodes_listdict])
  85         for site in sites_listdict:
  86             site_hrn = _get_site_hrn(site)
  87             site_record = self.find_record_by_type_hrn ('authority', site_hrn)
  88             if not site_record:
  89                 try:
  90                     urn = hrn_to_urn(site_hrn, 'authority')
  91                     if not self.auth_hierarchy.auth_exists(urn):
  92                         self.auth_hierarchy.create_auth(urn)
  93
  94                     auth_info = self.auth_hierarchy.get_auth_info(urn)
  95                     site_record = RegAuthority(hrn=site_hrn, \
  96                                             gid=auth_info.get_gid_object(),
  97                                             pointer='-1',
  98                                             authority=get_authority(site_hrn))
  99                     site_record.just_created()
 100                     dbsession.add(site_record)
 101                     dbsession.commit()
 102                     self.logger.info("SlabImporter: imported authority (site) \
 103                          %s" % site_record)
 104                     self.update_just_added_records_dict(site_record)
 105                 except SQLAlchemyError:
 106                     # if the site import fails then there is no point in
 107                     # trying to import the
 108                     # site's child records(node, slices, persons), so skip them.
 109                     self.logger.log_exc("SlabImporter: failed to import site. \
 110                         Skipping child records")
 111                     continue
 112             else:
 113                 # xxx update the record ...
 114                 pass
 115
 116
 117             site_record.stale = False
 118             self.import_nodes(site['node_ids'], nodes_by_id, slabdriver)
 119
 120             return
 121
 122     def import_nodes(self, node_ids, nodes_by_id, slabdriver) :
 123
 124         for node_id in node_ids:
 125             try:
 126                 node = nodes_by_id[node_id]
 127             except KeyError:
 128                 self.logger.warning ("SlabImporter: cannot find node_id %s \
 129                         - ignored" %(node_id))
 130                 continue
 131             escaped_hrn =  \
 132             self.hostname_to_hrn_escaped(slabdriver.slab_api.root_auth, \
 133             node['hostname'])
 134             print>>sys.stderr, "\r\n \r\n SLABIMPORTER node %s " %(node)
 135             hrn =  node['hrn']
 136
 137
 138             # xxx this sounds suspicious
 139             if len(hrn) > 64: hrn = hrn[:64]
 140             node_record = self.find_record_by_type_hrn( 'node', hrn )
 141             if not node_record:
 142                 pkey = Keypair(create=True)
 143                 urn = hrn_to_urn(escaped_hrn, 'node')
 144                 node_gid = \
 145                     self.auth_hierarchy.create_gid(urn, \
 146                     create_uuid(), pkey)
 147
 148                 def slab_get_authority(hrn):
 149                     return hrn.split(".")[0]
 150
 151                 node_record = RegNode(hrn=hrn, gid=node_gid,
 152                                     pointer = '-1',
 153                                     authority=slab_get_authority(hrn))
 154                 try:
 155
 156                     node_record.just_created()
 157                     dbsession.add(node_record)
 158                     dbsession.commit()
 159                     self.logger.info("SlabImporter: imported node: %s" \
 160                                 % node_record)
 161                     self.update_just_added_records_dict(node_record)
 162                 except SQLAlchemyError:
 163                     self.logger.log_exc("SlabImporter: \
 164                                     failed to import node")
 165             else:
 166                 # xxx update the record ...
 167                 pass
 168             node_record.stale=False
 169
 170      # return a tuple pubkey (a plc key object) and pkey (a Keypair object)
 171
 172     def init_person_key (self, person, slab_key):
 173         pubkey = None
 174         if  person['pkey']:
 175             # randomly pick first key in set
 176             pubkey = slab_key
 177
 178             try:
 179                 pkey = convert_public_key(pubkey)
 180             except TypeError:
 181                 #key not good. create another pkey
 182                 self.logger.warn('SlabImporter: \
 183                                     unable to convert public \
 184                                     key for %s' %person['hrn'])
 185                 pkey = Keypair(create=True)
 186
 187         else:
 188             # the user has no keys.
 189             #Creating a random keypair for the user's gid
 190             self.logger.warn("SlabImporter: person %s does not have a  \
 191                         public key" %(person['hrn']))
 192             pkey = Keypair(create=True)
 193         return (pubkey, pkey)
 194
 195
 196     def import_persons_and_slices(self, slabdriver):
 197         ldap_person_listdict = slabdriver.slab_api.GetPersons()
 198         print>>sys.stderr,"\r\n SLABIMPORT \t ldap_person_listdict %s \r\n" \
 199                 %(ldap_person_listdict)
 200
 201          # import persons
 202         for person in ldap_person_listdict :
 203
 204             self.logger.info("SlabImporter: person :" %(person))
 205             if 'ssh-rsa' not in person['pkey']:
 206                 #people with invalid ssh key (ssh-dss, empty, bullshit keys...)
 207                 #won't be imported
 208                 continue
 209             person_hrn = person['hrn']
 210             slice_hrn = self.slicename_to_hrn(person['hrn'])
 211
 212             # xxx suspicious again
 213             if len(person_hrn) > 64: person_hrn = person_hrn[:64]
 214             person_urn = hrn_to_urn(person_hrn, 'user')
 215
 216
 217             self.logger.info("SlabImporter: users_rec_by_email %s " \
 218                                             %(self.users_rec_by_email))
 219
 220             #Check if user using person['email'] form LDAP is already registered
 221             #in SFA. One email = one person. In this case, do not create another
 222             #record for this person
 223             #person_hrn returned by GetPerson based on senslab root auth +
 224             #uid ldap
 225             user_record = self.find_record_by_type_hrn('user', person_hrn)
 226
 227             if not user_record and  person['email'] in self.users_rec_by_email:
 228                 user_record = self.users_rec_by_email[person['email']]
 229                 person_hrn = user_record.hrn
 230                 person_urn = hrn_to_urn(person_hrn, 'user')
 231
 232
 233             slice_record = self.find_record_by_type_hrn ('slice', slice_hrn)
 234
 235             slab_key = person['pkey']
 236             # new person
 237             if not user_record:
 238                 (pubkey,pkey) = self.init_person_key(person, slab_key)
 239                 if pubkey is not None and pkey is not None :
 240                     person_gid = \
 241                     self.auth_hierarchy.create_gid(person_urn, \
 242                     create_uuid(), pkey)
 243                     if person['email']:
 244                         print>>sys.stderr, "\r\n \r\n SLAB IMPORTER \
 245                             PERSON EMAIL OK email %s " %(person['email'])
 246                         person_gid.set_email(person['email'])
 247                         user_record = RegUser(hrn=person_hrn, \
 248                                                 gid=person_gid,
 249                                                 pointer='-1',
 250                                                 authority=get_authority(person_hrn),
 251                                                 email=person['email'])
 252                     else:
 253                         user_record = RegUser(hrn=person_hrn, \
 254                                                 gid=person_gid,
 255                                                 pointer='-1',
 256                                                 authority=get_authority(person_hrn))
 257
 258                     if pubkey:
 259                         user_record.reg_keys = [RegKey(pubkey)]
 260                     else:
 261                         self.logger.warning("No key found for user %s" \
 262                         %(user_record))
 263
 264                         try:
 265                             user_record.just_created()
 266                             dbsession.add (user_record)
 267                             dbsession.commit()
 268                             self.logger.info("SlabImporter: imported person: %s"\
 269                             %(user_record))
 270                             self.update_just_added_records_dict( user_record )
 271
 272                         except SQLAlchemyError:
 273                             self.logger.log_exc("SlabImporter: \
 274                                 failed to import person  %s"%(person))
 275             else:
 276                 # update the record ?
 277                 # if user's primary key has changed then we need to update
 278                 # the users gid by forcing an update here
 279                 sfa_keys = user_record.reg_keys
 280
 281                 new_key=False
 282                 if slab_key is not sfa_keys :
 283                     new_key = True
 284                 if new_key:
 285                     print>>sys.stderr,"SlabImporter: \t \t USER UPDATE \
 286                         person: %s" %(person['hrn'])
 287                     (pubkey,pkey) = self.init_person_key (person, slab_key)
 288                     person_gid = \
 289                         self.auth_hierarchy.create_gid(person_urn, \
 290                         create_uuid(), pkey)
 291                     if not pubkey:
 292                         user_record.reg_keys = []
 293                     else:
 294                         user_record.reg_keys = [RegKey(pubkey)]
 295                     self.logger.info("SlabImporter: updated person: %s" \
 296                     % (user_record))
 297
 298                 if person['email']:
 299                     user_record.email = person['email']
 300
 301             try:
 302                 dbsession.commit()
 303                 user_record.stale = False
 304             except SQLAlchemyError:
 305                 self.logger.log_exc("SlabImporter: \
 306                 failed to update person  %s"%(person))
 307
 308             self.import_slice(slice_hrn, slice_record,user_record)
 309
 310
 311     def import_slice(self, slice_hrn, slice_record, user_record):
 312
 313         if not slice_record :
 314
 315             pkey = Keypair(create=True)
 316             urn = hrn_to_urn(slice_hrn, 'slice')
 317             slice_gid = \
 318                 self.auth_hierarchy.create_gid(urn, \
 319                 create_uuid(), pkey)
 320             slice_record = RegSlice (hrn=slice_hrn, gid=slice_gid,
 321                                         pointer='-1',
 322                                         authority=get_authority(slice_hrn))
 323             try:
 324                 slice_record.just_created()
 325                 dbsession.add(slice_record)
 326                 dbsession.commit()
 327
 328                 #Serial id created after commit
 329                 #Get it
 330                 #sl_rec = dbsession.query(RegSlice).filter(RegSlice.hrn.match(slice_hrn)).all()
 331
 332
 333                 self.update_just_added_records_dict ( slice_record )
 334
 335             except SQLAlchemyError:
 336                 self.logger.log_exc("SlabImporter: failed to import slice")
 337
 338         #No slice update upon import in senslab
 339         else:
 340             # xxx update the record ...
 341             self.logger.warning ("Slice update not yet implemented")
 342             pass
 343         # record current users affiliated with the slice
 344
 345
 346         slice_record.reg_researchers =  [user_record]
 347         try:
 348             dbsession.commit()
 349             slice_record.stale = False
 350         except SQLAlchemyError:
 351             self.logger.log_exc("SlabImporter: failed to update slice")
 352
 353
 354     def run (self, options):
 355         config = Config()
 356
 357         slabdriver = SlabDriver(config)
 358
 359         #Create special slice table for senslab
 360
 361         if not slabdriver.db.exists('slab_xp'):
 362             slabdriver.db.createtable()
 363             self.logger.info ("SlabImporter.run:  slab_xp table created ")
 364
 365
 366         self.import_sites_and_nodes(slabdriver)
 367
 368         self.import_persons_and_slices(slabdriver)
 369         #slices_listdict = slabdriver.slab_api.GetSlices()
 370         #try:
 371             #slices_by_userid = \
 372                 #dict([(one_slice['reg_researchers']['record_id'], one_slice ) \
 373                 #for one_slice in slices_listdict ])
 374         #except TypeError:
 375             #self.logger.log_exc("SlabImporter: failed to create list \
 376                         #of slices by user id.")
 377             #pass
 378
 379
 380
 381          # import node records in site
 382
 383
 384
 385
 386
 387
 388          ### remove stale records
 389         # special records must be preserved
 390         system_hrns = [slabdriver.hrn, slabdriver.slab_api.root_auth,  \
 391                                         slabdriver.hrn+ '.slicemanager']
 392         for record in self.all_records:
 393             if record.hrn in system_hrns:
 394                 record.stale = False
 395             if record.peer_authority:
 396                 record.stale = False
 397
 398
 399         for record in self.all_records:
 400             if record.type == 'user':
 401                 print>>sys.stderr,"SlabImporter: stale records: hrn %s %s" \
 402                                             %(record.hrn,record.stale)
 403             try:
 404                 stale = record.stale
 405             except :
 406                 stale = True
 407                 self.logger.warning("stale not found with %s"%record)
 408             if stale:
 409                 self.logger.info("SlabImporter: deleting stale record: %s" \
 410                 %(record))
 411
 412                 try:
 413                     dbsession.delete(record)
 414                     dbsession.commit()
 415                 except SQLAlchemyError:
 416                     self.logger.log_exc("SlabImporter: failed to delete stale \
 417                     record %s" %(record) )
 418
 419