sfa/openstack/nova_driver.py

   1 import time
   2 import datetime
   3 #
   4 from sfa.util.faults import MissingSfaInfo, UnknownSfaType, \
   5     RecordNotFound, SfaNotImplemented, SliverDoesNotExist
   6 from sfa.util.sfalogging import logger
   7 from sfa.util.defaultdict import defaultdict
   8 from sfa.util.sfatime import utcparse, datetime_to_string, datetime_to_epoch
   9 from sfa.util.xrn import Xrn, hrn_to_urn, get_leaf, urn_to_sliver_id
  10 from sfa.util.cache import Cache
  11 # used to be used in get_ticket
  12 #from sfa.trust.sfaticket import SfaTicket
  13 from sfa.rspecs.version_manager import VersionManager
  14 from sfa.rspecs.rspec import RSpec
  15 # the driver interface, mostly provides default behaviours
  16 from sfa.managers.driver import Driver
  17 from sfa.openstack.nova_shell import NovaShell
  18 from sfa.openstack.osaggregate import OSAggregate
  19 from sfa.plc.plslices import PlSlices
  20 from sfa.util.osxrn import OSXrn
  21
  22
  23 def list_to_dict(recs, key):
  24     """
  25     convert a list of dictionaries into a dictionary keyed on the
  26     specified dictionary key
  27     """
  28     return dict ( [ (rec[key],rec) for rec in recs ] )
  29
  30 #
  31 # PlShell is just an xmlrpc serverproxy where methods
  32 # can be sent as-is; it takes care of authentication
  33 # from the global config
  34 #
  35 class NovaDriver (Driver):
  36
  37     # the cache instance is a class member so it survives across incoming requests
  38     cache = None
  39
  40     def __init__ (self, config):
  41         Driver.__init__ (self, config)
  42         self.shell = NovaShell (config)
  43         self.cache=None
  44         if config.SFA_AGGREGATE_CACHING:
  45             if NovaDriver.cache is None:
  46                 NovaDriver.cache = Cache()
  47             self.cache = NovaDriver.cache
  48
  49     ########################################
  50     ########## registry oriented
  51     ########################################
  52
  53     ########## disabled users
  54     def is_enabled (self, record):
  55         # all records are enabled
  56         return True
  57
  58     def augment_records_with_testbed_info (self, sfa_records):
  59         return self.fill_record_info (sfa_records)
  60
  61     ##########
  62     def register (self, sfa_record, hrn, pub_key):
  63         type = sfa_record['type']
  64         pl_record = self.sfa_fields_to_pl_fields(type, hrn, sfa_record)
  65
  66         if type == 'slice':
  67             acceptable_fields=['url', 'instantiation', 'name', 'description']
  68             # add slice description, name, researchers, PI
  69             pass
  70
  71         elif type == 'user':
  72             # add person roles, projects and keys
  73             pass
  74         return pointer
  75
  76     ##########
  77     # xxx actually old_sfa_record comes filled with plc stuff as well in the original code
  78     def update (self, old_sfa_record, new_sfa_record, hrn, new_key):
  79         pointer = old_sfa_record['pointer']
  80         type = old_sfa_record['type']
  81
  82         # new_key implemented for users only
  83         if new_key and type not in [ 'user' ]:
  84             raise UnknownSfaType(type)
  85
  86         elif type == "slice":
  87             # can update description, researchers and PI
  88             pass
  89         elif type == "user":
  90             # can update  slices, keys and roles
  91             pass
  92         return True
  93
  94
  95     ##########
  96     def remove (self, sfa_record):
  97         type=sfa_record['type']
  98         name = Xrn(sfa_record['hrn']).get_leaf()
  99         if type == 'user':
 100             if self.shell.user_get(name):
 101                 self.shell.user_delete(name)
 102         elif type == 'slice':
 103             if self.shell.project_get(name):
 104                 self.shell.project_delete(name)
 105         return True
 106
 107
 108     ####################
 109     def fill_record_info(self, records):
 110         """
 111         Given a (list of) SFA record, fill in the PLC specific
 112         and SFA specific fields in the record.
 113         """
 114         if not isinstance(records, list):
 115             records = [records]
 116
 117         for record in records:
 118             name = Xrn(record['hrn']).get_leaf()
 119             os_record = None
 120             if record['type'] == 'user':
 121                 os_record = self.shell.user_get(name)
 122                 record['slices'] = [self.hrn + "." + proj.name for \
 123                                     proj in os_record.projects]
 124                 record['roles'] = [role for role in os_record.roles]
 125                 keys = self.shell.key_pair_get_all_by_user(name)
 126                 record['keys'] = [key.public_key for key in keys]
 127             elif record['type'] == 'slice':
 128                 os_record = self.shell.project_get(name)
 129                 record['description'] = os_record.description
 130                 record['PI'] = self.hrn + "." + os_record.project_manager
 131                 record['geni_creator'] = record['PI']
 132                 record['researcher'] = [self.hrn + "." + user.name for \
 133                                          user in os_record.members]
 134             else:
 135                 continue
 136             record['geni_urn'] = hrn_to_urn(record['hrn'], record['type'])
 137             record['geni_certificate'] = record['gid']
 138             record['name'] = os_record.name
 139             if os_record.created_at is not None:
 140                 record['date_created'] = datetime_to_string(utcparse(os_record.created_at))
 141             if os_record.updated_at is not None:
 142                 record['last_updated'] = datetime_to_string(utcparse(os_record.updated_at))
 143
 144         return records
 145
 146
 147     ####################
 148     # plcapi works by changes, compute what needs to be added/deleted
 149     def update_relation (self, subject_type, target_type, subject_id, target_ids):
 150         # hard-wire the code for slice/user for now, could be smarter if needed
 151         if subject_type =='slice' and target_type == 'user':
 152             subject=self.shell.project_get(subject_id)[0]
 153             current_target_ids = [user.name for user in subject.members]
 154             add_target_ids = list ( set (target_ids).difference(current_target_ids))
 155             del_target_ids = list ( set (current_target_ids).difference(target_ids))
 156             logger.debug ("subject_id = %s (type=%s)"%(subject_id,type(subject_id)))
 157             for target_id in add_target_ids:
 158                 self.shell.project_add_member(target_id,subject_id)
 159                 logger.debug ("add_target_id = %s (type=%s)"%(target_id,type(target_id)))
 160             for target_id in del_target_ids:
 161                 logger.debug ("del_target_id = %s (type=%s)"%(target_id,type(target_id)))
 162                 self.shell.project_remove_member(target_id, subject_id)
 163         else:
 164             logger.info('unexpected relation to maintain, %s -> %s'%(subject_type,target_type))
 165
 166
 167     ########################################
 168     ########## aggregate oriented
 169     ########################################
 170
 171     def testbed_name (self): return "openstack"
 172
 173     # 'geni_request_rspec_versions' and 'geni_ad_rspec_versions' are mandatory
 174     def aggregate_version (self):
 175         version_manager = VersionManager()
 176         ad_rspec_versions = []
 177         request_rspec_versions = []
 178         for rspec_version in version_manager.versions:
 179             if rspec_version.content_type in ['*', 'ad']:
 180                 ad_rspec_versions.append(rspec_version.to_dict())
 181             if rspec_version.content_type in ['*', 'request']:
 182                 request_rspec_versions.append(rspec_version.to_dict())
 183         return {
 184             'testbed':self.testbed_name(),
 185             'geni_request_rspec_versions': request_rspec_versions,
 186             'geni_ad_rspec_versions': ad_rspec_versions,
 187             }
 188
 189     def list_slices (self, creds, options):
 190         # look in cache first
 191         if self.cache:
 192             slices = self.cache.get('slices')
 193             if slices:
 194                 logger.debug("OpenStackDriver.list_slices returns from cache")
 195                 return slices
 196
 197         # get data from db
 198         projs = self.shell.auth_manager.get_projects()
 199         slice_urns = [OSXrn(proj.name, 'slice').urn for proj in projs]
 200
 201         # cache the result
 202         if self.cache:
 203             logger.debug ("OpenStackDriver.list_slices stores value in cache")
 204             self.cache.add('slices', slice_urns)
 205
 206         return slice_urns
 207
 208     # first 2 args are None in case of resource discovery
 209     def list_resources (self, slice_urn, slice_hrn, creds, options):
 210         cached_requested = options.get('cached', True)
 211
 212         version_manager = VersionManager()
 213         # get the rspec's return format from options
 214         rspec_version = version_manager.get_version(options.get('geni_rspec_version'))
 215         version_string = "rspec_%s" % (rspec_version)
 216
 217         #panos adding the info option to the caching key (can be improved)
 218         if options.get('info'):
 219             version_string = version_string + "_"+options.get('info', 'default')
 220
 221         # look in cache first
 222         if cached_requested and self.cache and not slice_hrn:
 223             rspec = self.cache.get(version_string)
 224             if rspec:
 225                 logger.debug("OpenStackDriver.ListResources: returning cached advertisement")
 226                 return rspec
 227
 228         #panos: passing user-defined options
 229         #print "manager options = ",options
 230         aggregate = OSAggregate(self)
 231         rspec =  aggregate.get_rspec(slice_xrn=slice_urn, version=rspec_version,
 232                                      options=options)
 233
 234         # cache the result
 235         if self.cache and not slice_hrn:
 236             logger.debug("OpenStackDriver.ListResources: stores advertisement in cache")
 237             self.cache.add(version_string, rspec)
 238
 239         return rspec
 240
 241     def sliver_status (self, slice_urn, slice_hrn):
 242         # find out where this slice is currently running
 243         slicename = hrn_to_pl_slicename(slice_hrn)
 244
 245         slices = self.shell.GetSlices([slicename], ['slice_id', 'node_ids','person_ids','name','expires'])
 246         if len(slices) == 0:
 247             raise SliverDoesNotExist("%s (used %s as slicename internally)" % (slice_hrn, slicename))
 248         slice = slices[0]
 249
 250         # report about the local nodes only
 251         nodes = self.shell.GetNodes({'node_id':slice['node_ids'],'peer_id':None},
 252                               ['node_id', 'hostname', 'site_id', 'boot_state', 'last_contact'])
 253
 254         if len(nodes) == 0:
 255             raise SliverDoesNotExist("You have not allocated any slivers here")
 256
 257         site_ids = [node['site_id'] for node in nodes]
 258
 259         result = {}
 260         top_level_status = 'unknown'
 261         if nodes:
 262             top_level_status = 'ready'
 263         result['geni_urn'] = slice_urn
 264         result['pl_login'] = slice['name']
 265         result['pl_expires'] = datetime_to_string(utcparse(slice['expires']))
 266
 267         resources = []
 268         for node in nodes:
 269             res = {}
 270             res['pl_hostname'] = node['hostname']
 271             res['pl_boot_state'] = node['boot_state']
 272             res['pl_last_contact'] = node['last_contact']
 273             if node['last_contact'] is not None:
 274
 275                 res['pl_last_contact'] = datetime_to_string(utcparse(node['last_contact']))
 276             sliver_id = urn_to_sliver_id(slice_urn, slice['slice_id'], node['node_id'])
 277             res['geni_urn'] = sliver_id
 278             if node['boot_state'] == 'boot':
 279                 res['geni_status'] = 'ready'
 280             else:
 281                 res['geni_status'] = 'failed'
 282                 top_level_status = 'failed'
 283
 284             res['geni_error'] = ''
 285
 286             resources.append(res)
 287
 288         result['geni_status'] = top_level_status
 289         result['geni_resources'] = resources
 290         return result
 291
 292     def create_sliver (self, slice_urn, slice_hrn, creds, rspec_string, users, options):
 293
 294         aggregate = OSAggregate(self)
 295         slicename = get_leaf(slice_hrn)
 296
 297         # parse rspec
 298         rspec = RSpec(rspec_string)
 299         requested_attributes = rspec.version.get_slice_attributes()
 300
 301         # ensure slice record exists
 302         slice = aggregate.verify_slice(slicename, users, options=options)
 303         # ensure person records exists
 304         persons = aggregate.verify_slice_users(slicename, users, options=options)
 305         # add/remove slice from nodes
 306         slices.verify_instances(slicename, rspec)
 307
 308         return aggregate.get_rspec(slice_xrn=slice_urn, version=rspec.version)
 309
 310     def delete_sliver (self, slice_urn, slice_hrn, creds, options):
 311         name = OSXrn(xrn=slice_urn).name
 312         slice = self.shell.project_get(name)
 313         if not slice:
 314             return 1
 315
 316         self.shell.DeleteSliceFromNodes(slicename, slice['node_ids'])
 317         instances = self.shell.db.instance_get_all_by_project(name)
 318         for instance in instances:
 319             self.shell.db.instance_destroy(instance.instance_id)
 320         return 1
 321
 322     def renew_sliver (self, slice_urn, slice_hrn, creds, expiration_time, options):
 323         return True
 324
 325     def start_slice (self, slice_urn, slice_hrn, creds):
 326         return 1
 327
 328     def stop_slice (self, slice_urn, slice_hrn, creds):
 329         name = OSXrn(xrn=slice_urn).name
 330         slice = self.shell.get_project(name)
 331         instances = self.shell.db.instance_get_all_by_project(name)
 332         for instance in instances:
 333             self.shell.db.instance_stop(instance.instance_id)
 334         return 1
 335
 336     def reset_slice (self, slice_urn, slice_hrn, creds):
 337         raise SfaNotImplemented ("reset_slice not available at this interface")
 338
 339     # xxx this code is quite old and has not run for ages
 340     # it is obviously totally broken and needs a rewrite
 341     def get_ticket (self, slice_urn, slice_hrn, creds, rspec_string, options):
 342         raise SfaNotImplemented,"OpenStackDriver.get_ticket needs a rewrite"
 343 # please keep this code for future reference
 344 #        slices = PlSlices(self)
 345 #        peer = slices.get_peer(slice_hrn)
 346 #        sfa_peer = slices.get_sfa_peer(slice_hrn)
 347 #
 348 #        # get the slice record
 349 #        credential = api.getCredential()
 350 #        interface = api.registries[api.hrn]
 351 #        registry = api.server_proxy(interface, credential)
 352 #        records = registry.Resolve(xrn, credential)
 353 #
 354 #        # make sure we get a local slice record
 355 #        record = None
 356 #        for tmp_record in records:
 357 #            if tmp_record['type'] == 'slice' and \
 358 #               not tmp_record['peer_authority']:
 359 #    #Error (E0602, GetTicket): Undefined variable 'SliceRecord'
 360 #                slice_record = SliceRecord(dict=tmp_record)
 361 #        if not record:
 362 #            raise RecordNotFound(slice_hrn)
 363 #
 364 #        # similar to CreateSliver, we must verify that the required records exist
 365 #        # at this aggregate before we can issue a ticket
 366 #        # parse rspec
 367 #        rspec = RSpec(rspec_string)
 368 #        requested_attributes = rspec.version.get_slice_attributes()
 369 #
 370 #        # ensure site record exists
 371 #        site = slices.verify_site(slice_hrn, slice_record, peer, sfa_peer)
 372 #        # ensure slice record exists
 373 #        slice = slices.verify_slice(slice_hrn, slice_record, peer, sfa_peer)
 374 #        # ensure person records exists
 375 #    # xxx users is undefined in this context
 376 #        persons = slices.verify_persons(slice_hrn, slice, users, peer, sfa_peer)
 377 #        # ensure slice attributes exists
 378 #        slices.verify_slice_attributes(slice, requested_attributes)
 379 #
 380 #        # get sliver info
 381 #        slivers = slices.get_slivers(slice_hrn)
 382 #
 383 #        if not slivers:
 384 #            raise SliverDoesNotExist(slice_hrn)
 385 #
 386 #        # get initscripts
 387 #        initscripts = []
 388 #        data = {
 389 #            'timestamp': int(time.time()),
 390 #            'initscripts': initscripts,
 391 #            'slivers': slivers
 392 #        }
 393 #
 394 #        # create the ticket
 395 #        object_gid = record.get_gid_object()
 396 #        new_ticket = SfaTicket(subject = object_gid.get_subject())
 397 #        new_ticket.set_gid_caller(api.auth.client_gid)
 398 #        new_ticket.set_gid_object(object_gid)
 399 #        new_ticket.set_issuer(key=api.key, subject=self.hrn)
 400 #        new_ticket.set_pubkey(object_gid.get_pubkey())
 401 #        new_ticket.set_attributes(data)
 402 #        new_ticket.set_rspec(rspec)
 403 #        #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 404 #        new_ticket.encode()
 405 #        new_ticket.sign()
 406 #
 407 #        return new_ticket.save_to_string(save_parents=True)