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         elif flavour == "iotlab":
  24             from sfa.iotlab.iotlabdriver import IotlabDriver
  25             self.driver = IotlabDriver(api)
  26         else:
  27           logger.info("DriverV2Adapter unknown flavour !!!\n supported flavours: pl, nitos, fd, iotlab")
  28
  29         # Caching
  30         if config.SFA_AGGREGATE_CACHING:
  31             if self.driver.cache:
  32                 self.cache = self.driver.cache
  33             else:
  34                 self.cache = Cache()
  35
  36
  37     def __getattr__(self, name):
  38         def func(*args, **kwds):
  39             if name == "list_resources":
  40                 (version, options) = args
  41                 slice_urn = slice_hrn = None
  42                 creds = []
  43                 rspec = getattr(self.driver, "list_resources")(slice_urn, slice_hrn, [], options)
  44                 result = rspec
  45
  46             elif name == "describe":
  47                 (urns, version, options) = args
  48                 slice_urn = urns[0]
  49                 slice_hrn, type = urn_to_hrn(slice_urn)
  50                 creds = []
  51                 rspec = getattr(self.driver, "list_resources")(slice_urn, slice_hrn, creds, options)
  52
  53                 # SliverAllocation
  54                 if len(urns) == 1 and Xrn(xrn=urns[0]).type == 'slice':
  55                     constraint = SliverAllocation.slice_urn.in_(urns)
  56                 else:
  57                     constraint = SliverAllocation.sliver_id.in_(urns)
  58
  59                 sliver_allocations = self.driver.api.dbsession().query (SliverAllocation).filter        (constraint)
  60                 sliver_status = getattr(self.driver, "sliver_status")(slice_urn, slice_hrn)
  61                 if 'geni_expires' in sliver_status.keys():
  62                     geni_expires = sliver_status['geni_expires']
  63                 else:
  64                     geni_expires = ''
  65
  66                 geni_slivers = []
  67                 for sliver_allocation in sliver_allocations:
  68                     geni_sliver = {}
  69                     geni_sliver['geni_expires'] = geni_expires
  70                     geni_sliver['geni_allocation'] = sliver_allocation.allocation_state
  71                     geni_sliver['geni_sliver_urn'] = sliver_allocation.sliver_id
  72                     geni_sliver['geni_error'] = ''
  73                     if geni_sliver['geni_allocation'] == 'geni_allocated':
  74                         geni_sliver['geni_operational_status'] = 'geni_pending_allocation'
  75                     else:
  76                         geni_sliver['geni_operational_status'] = 'geni_ready'
  77                     geni_slivers.append(geni_sliver)
  78
  79
  80                 result = {'geni_urn': slice_urn,
  81                 'geni_rspec': rspec,
  82                 'geni_slivers': geni_slivers}
  83
  84             elif name == "allocate":
  85                 (slice_urn, rspec_string, expiration, options) = args
  86                 slice_hrn, type = urn_to_hrn(slice_urn)
  87                 creds = []
  88                 users = options.get('sfa_users', [])
  89                 manifest_string = getattr(self.driver, "create_sliver")(slice_urn, slice_hrn, creds, rspec_string, users, options)
  90
  91                 # slivers allocation
  92                 rspec = RSpec(manifest_string)
  93                 slivers = rspec.version.get_nodes_with_slivers()
  94
  95                 ##SliverAllocation
  96                 for sliver in slivers:
  97                      client_id = sliver['client_id']
  98                      component_id = sliver['component_id']
  99                      component_name = sliver['component_name']
 100                      slice_name = slice_hrn.replace('.','-')
 101                      component_short_name = component_name.split('.')[0]
 102                      # self.driver.hrn
 103                      sliver_hrn = '%s.%s-%s' % (self.driver.hrn, slice_name, component_short_name)
 104                      sliver_id = Xrn(sliver_hrn, type='sliver').urn
 105                      record = SliverAllocation(sliver_id=sliver_id,
 106                                       client_id=client_id,
 107                                       component_id=component_id,
 108                                       slice_urn = slice_urn,
 109                                       allocation_state='geni_allocated')
 110
 111                      record.sync()
 112
 113
 114                 # return manifest
 115                 rspec_version = RSpec(rspec_string).version
 116                 rspec_version_str = "%s"%rspec_version
 117                 options['geni_rspec_version'] = {'version': rspec_version_str.split(' ')[1], 'type': rspec_version_str.lower().split(' ')[0]}
 118                 result = self.describe([slice_urn], rspec_version, options)
 119
 120             elif name == "provision":
 121                 (urns, options) = args
 122                 if len(urns) == 1 and Xrn(xrn=urns[0]).type == 'slice':
 123                    constraint = SliverAllocation.slice_urn.in_(urns)
 124                 else:
 125                    constraint = SliverAllocation.sliver_id.in_(urns)
 126
 127                 dbsession = self.driver.api.dbsession()
 128                 sliver_allocations = dbsession.query (SliverAllocation).filter(constraint)
 129                 for sliver_allocation in sliver_allocations:
 130                      sliver_allocation.allocation_state = 'geni_provisioned'
 131
 132                 dbsession.commit()
 133                 result = self.describe(urns, '', options)
 134
 135             elif name == "status":
 136                 urns = args
 137                 options = {}
 138                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 139                 descr = self.describe(urns[0], '', options)
 140                 result = {'geni_urn': descr['geni_urn'],
 141                           'geni_slivers': descr['geni_slivers']}
 142
 143             elif name == "delete":
 144                 (urns, options) = args
 145                 slice_urn = urns[0]
 146                 slice_hrn, type = urn_to_hrn(slice_urn)
 147                 creds = []
 148                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 149                 descr = self.describe(urns, '', options)
 150                 result = []
 151                 for sliver_allocation in descr['geni_slivers']:
 152                      geni_sliver = {'geni_sliver_urn': sliver_allocation['geni_sliver_urn'],
 153                                     'geni_allocation_status': 'geni_unallocated',
 154                                     'geni_expires': sliver_allocation['geni_expires'],
 155                                     'geni_error': sliver_allocation['geni_error']}
 156
 157                      result.append(geni_sliver)
 158
 159                 getattr(self.driver, "delete_sliver")(slice_urn, slice_hrn, creds, options)
 160
 161                 #SliverAllocation
 162                 constraints = SliverAllocation.slice_urn.in_(urns)
 163                 dbsession = self.driver.api.dbsession()
 164                 sliver_allocations = dbsession.query(SliverAllocation).filter(constraints)
 165                 sliver_ids = [sliver_allocation.sliver_id for sliver_allocation in sliver_allocations]
 166                 SliverAllocation.delete_allocations(sliver_ids, dbsession)
 167
 168
 169             elif name == "renew":
 170                 (urns, expiration_time, options) = args
 171                 slice_urn = urns[0]
 172                 slice_hrn, type = urn_to_hrn(slice_urn)
 173                 creds = []
 174
 175                 getattr(self.driver, "renew_sliver")(slice_urn, slice_hrn, creds, expiration_time, options)
 176
 177                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 178                 descr = self.describe(urns, '', options)
 179                 result = descr['geni_slivers']
 180
 181
 182             elif name == "perform_operational_action":
 183                 (urns, action, options) = args
 184                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 185                 result = self.describe(urns, '', options)['geni_slivers']
 186
 187
 188             else:
 189                 # same as v2 ( registry methods)
 190                 result=getattr(self.driver, name)(*args, **kwds)
 191             return result
 192         return func