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