sfa/managers/v2_to_v3_adapter.py

   1 #
   2 # an adapter on top of driver implementing AM API v2 to be AM API v3 compliant
   3 #
   4 import sys
   5 from sfa.util.sfalogging import logger
   6 from sfa.util.xrn import Xrn, urn_to_hrn, hrn_to_urn, get_leaf, get_authority
   7 from sfa.util.cache import Cache
   8 from sfa.rspecs.rspec import RSpec
   9 from sfa.storage.model import SliverAllocation
  10
  11
  12 class V2ToV3Adapter:
  13
  14     def __init__(self, api):
  15         config = api.config
  16         flavour = config.SFA_GENERIC_FLAVOUR
  17         # to be cleaned
  18         if flavour == "nitos":
  19             from sfa.nitos.nitosdriver import NitosDriver
  20             self.driver = NitosDriver(api)
  21         else:
  22             logger.error(
  23                 "V2ToV3Adapter: Unknown Flavour !!!\n Supported Flavours: nitos")
  24
  25         # Caching
  26         if config.SFA_AGGREGATE_CACHING:
  27             if self.driver.cache:
  28                 self.cache = self.driver.cache
  29             else:
  30                 self.cache = Cache()
  31
  32     def __getattr__(self, name):
  33         def func(*args, **kwds):
  34             if name == "list_resources":
  35                 (version, options) = args
  36                 slice_urn = slice_hrn = None
  37                 creds = []
  38                 rspec = getattr(self.driver, "list_resources")(
  39                     slice_urn, slice_hrn, [], options)
  40                 result = rspec
  41
  42             elif name == "describe":
  43                 (urns, version, options) = args
  44                 slice_urn = urns[0]
  45                 slice_hrn, type = urn_to_hrn(slice_urn)
  46                 creds = []
  47                 rspec = getattr(self.driver, "list_resources")(
  48                     slice_urn, slice_hrn, creds, options)
  49
  50                 # SliverAllocation
  51                 if len(urns) == 1 and Xrn(xrn=urns[0]).type == 'slice':
  52                     constraint = SliverAllocation.slice_urn.in_(urns)
  53                 else:
  54                     constraint = SliverAllocation.sliver_id.in_(urns)
  55
  56                 sliver_allocations = self.driver.api.dbsession().query(
  57                     SliverAllocation).filter(constraint)
  58                 sliver_status = getattr(self.driver, "sliver_status")(
  59                     slice_urn, slice_hrn)
  60                 if 'geni_expires' in sliver_status.keys():
  61                     geni_expires = sliver_status['geni_expires']
  62                 else:
  63                     geni_expires = ''
  64
  65                 geni_slivers = []
  66                 for sliver_allocation in sliver_allocations:
  67                     geni_sliver = {}
  68                     geni_sliver['geni_expires'] = geni_expires
  69                     geni_sliver[
  70                         'geni_allocation'] = sliver_allocation.allocation_state
  71                     geni_sliver[
  72                         'geni_sliver_urn'] = sliver_allocation.sliver_id
  73                     geni_sliver['geni_error'] = ''
  74                     if geni_sliver['geni_allocation'] == 'geni_allocated':
  75                         geni_sliver[
  76                             'geni_operational_status'] = 'geni_pending_allocation'
  77                     else:
  78                         geni_sliver['geni_operational_status'] = 'geni_ready'
  79                     geni_slivers.append(geni_sliver)
  80
  81                 result = {'geni_urn': slice_urn,
  82                           'geni_rspec': rspec,
  83                           'geni_slivers': geni_slivers}
  84
  85             elif name == "allocate":
  86                 (slice_urn, rspec_string, expiration, options) = args
  87                 slice_hrn, type = urn_to_hrn(slice_urn)
  88                 creds = []
  89                 users = options.get('sfa_users', [])
  90                 manifest_string = getattr(self.driver, "create_sliver")(
  91                     slice_urn, slice_hrn, creds, rspec_string, users, options)
  92
  93                 # slivers allocation
  94                 rspec = RSpec(manifest_string)
  95                 slivers = rspec.version.get_nodes_with_slivers()
  96
  97                 # SliverAllocation
  98                 for sliver in slivers:
  99                     client_id = sliver['client_id']
 100                     component_id = sliver['component_id']
 101                     component_name = sliver['component_name']
 102                     slice_name = slice_hrn.replace('.', '-')
 103                     component_short_name = component_name.split('.')[0]
 104                     # self.driver.hrn
 105                     sliver_hrn = '%s.%s-%s' % (self.driver.hrn,
 106                                                slice_name, component_short_name)
 107                     sliver_id = Xrn(sliver_hrn, type='sliver').urn
 108                     record = SliverAllocation(sliver_id=sliver_id,
 109                                               client_id=client_id,
 110                                               component_id=component_id,
 111                                               slice_urn=slice_urn,
 112                                               allocation_state='geni_allocated')
 113
 114                     record.sync(self.driver.api.dbsession())
 115
 116                 # return manifest
 117                 rspec_version = RSpec(rspec_string).version
 118                 rspec_version_str = "%s" % rspec_version
 119                 options['geni_rspec_version'] = {'version': rspec_version_str.split(
 120                     ' ')[1], 'type': rspec_version_str.lower().split(' ')[0]}
 121                 result = self.describe([slice_urn], rspec_version, options)
 122
 123             elif name == "provision":
 124                 (urns, options) = args
 125                 if len(urns) == 1 and Xrn(xrn=urns[0]).type == 'slice':
 126                     constraint = SliverAllocation.slice_urn.in_(urns)
 127                 else:
 128                     constraint = SliverAllocation.sliver_id.in_(urns)
 129
 130                 dbsession = self.driver.api.dbsession()
 131                 sliver_allocations = dbsession.query(
 132                     SliverAllocation).filter(constraint)
 133                 for sliver_allocation in sliver_allocations:
 134                     sliver_allocation.allocation_state = 'geni_provisioned'
 135
 136                 dbsession.commit()
 137                 result = self.describe(urns, '', options)
 138
 139             elif name == "status":
 140                 urns = args
 141                 options = {}
 142                 options['geni_rspec_version'] = {
 143                     'version': '3', 'type': 'GENI'}
 144                 descr = self.describe(urns[0], '', options)
 145                 result = {'geni_urn': descr['geni_urn'],
 146                           'geni_slivers': descr['geni_slivers']}
 147
 148             elif name == "delete":
 149                 (urns, options) = args
 150                 slice_urn = urns[0]
 151                 slice_hrn, type = urn_to_hrn(slice_urn)
 152                 creds = []
 153                 options['geni_rspec_version'] = {
 154                     'version': '3', 'type': 'GENI'}
 155                 descr = self.describe(urns, '', options)
 156                 result = []
 157                 for sliver_allocation in descr['geni_slivers']:
 158                     geni_sliver = {'geni_sliver_urn': sliver_allocation['geni_sliver_urn'],
 159                                    'geni_allocation_status': 'geni_unallocated',
 160                                    'geni_expires': sliver_allocation['geni_expires'],
 161                                    'geni_error': sliver_allocation['geni_error']}
 162
 163                     result.append(geni_sliver)
 164
 165                 getattr(self.driver, "delete_sliver")(
 166                     slice_urn, slice_hrn, creds, options)
 167
 168                 # SliverAllocation
 169                 constraints = SliverAllocation.slice_urn.in_(urns)
 170                 dbsession = self.driver.api.dbsession()
 171                 sliver_allocations = dbsession.query(
 172                     SliverAllocation).filter(constraints)
 173                 sliver_ids = [
 174                     sliver_allocation.sliver_id for sliver_allocation in sliver_allocations]
 175                 SliverAllocation.delete_allocations(sliver_ids, dbsession)
 176
 177             elif name == "renew":
 178                 (urns, expiration_time, options) = args
 179                 slice_urn = urns[0]
 180                 slice_hrn, type = urn_to_hrn(slice_urn)
 181                 creds = []
 182
 183                 getattr(self.driver, "renew_sliver")(
 184                     slice_urn, slice_hrn, creds, expiration_time, options)
 185
 186                 options['geni_rspec_version'] = {
 187                     'version': '3', 'type': 'GENI'}
 188                 descr = self.describe(urns, '', options)
 189                 result = descr['geni_slivers']
 190
 191             elif name == "perform_operational_action":
 192                 (urns, action, options) = args
 193                 options['geni_rspec_version'] = {
 194                     'version': '3', 'type': 'GENI'}
 195                 result = self.describe(urns, '', options)['geni_slivers']
 196
 197             else:
 198                 # same as v2 ( registry methods)
 199                 result = getattr(self.driver, name)(*args, **kwds)
 200             return result
 201         return func