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 from sfa.storage.alchemy import dbsession
  11
  12 class V2ToV3Adapter:
  13
  14     def __init__ (self, 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(config)
  20         elif flavour == "fd":
  21             from sfa.federica.fddriver import FdDriver
  22             self.driver = FdDriver(config)
  23         elif flavour == "dummy":
  24             from sfa.dummy.dummydriver import DummyDriver
  25             self.driver = DummyDriver(config)
  26         elif flavour == "slab":
  27             from sfa.senslab.slabdriver import SlabDriver
  28             self.driver = SlabDriver(config)
  29         else:
  30           logger.info("DriverV2Adapter unknown flavour !!!\n supported flavours: pl, nitos, fd, dummy, slab")
  31
  32         # Caching
  33         if config.SFA_AGGREGATE_CACHING:
  34             if self.driver.cache:
  35                 self.cache = self.driver.cache
  36             else:
  37                 self.cache = Cache()
  38
  39
  40     def __getattr__(self, name):
  41         def func(*args, **kwds):
  42             if name == "list_resources":
  43                 (version, options) = args
  44                 slice_urn = slice_hrn = None
  45                 creds = []
  46                 rspec = getattr(self.driver, "list_resources")(slice_urn, slice_hrn, [], options)
  47                 result = rspec
  48
  49             elif name == "describe":
  50                 (urns, version, options) = args
  51                 slice_urn = urns[0]
  52                 slice_hrn, type = urn_to_hrn(slice_urn)
  53                 creds = []
  54                 rspec = getattr(self.driver, "list_resources")(slice_urn, slice_hrn, creds, options)
  55
  56                 # SliverAllocation
  57                 if len(urns) == 1 and Xrn(xrn=urns[0]).type == 'slice':
  58                     constraint = SliverAllocation.slice_urn.in_(urns)
  59                 else:
  60                     constraint = SliverAllocation.sliver_id.in_(urns)
  61
  62                 sliver_allocations = dbsession.query (SliverAllocation).filter        (constraint)
  63                 sliver_status = getattr(self.driver, "sliver_status")(slice_urn, slice_hrn)
  64                 if 'geni_expires' in sliver_status.keys():
  65                     geni_expires = sliver_status['geni_expires']
  66                 else:
  67                     geni_expires = ''
  68
  69                 geni_slivers = []
  70                 for sliver_allocation in sliver_allocations:
  71                     geni_sliver = {}
  72                     geni_sliver['geni_expires'] = geni_expires
  73                     geni_sliver['geni_allocation'] = sliver_allocation.allocation_state
  74                     geni_sliver['geni_sliver_urn'] = sliver_allocation.sliver_id
  75                     geni_sliver['geni_error'] = ''
  76                     if geni_sliver['geni_allocation'] == 'geni_allocated':
  77                         geni_sliver['geni_operational_status'] = 'geni_pending_allocation'
  78                     else:
  79                         geni_sliver['geni_operational_status'] = 'geni_ready'
  80                     geni_slivers.append(geni_sliver)
  81
  82
  83                 result = {'geni_urn': slice_urn,
  84                 'geni_rspec': rspec,
  85                 'geni_slivers': geni_slivers}
  86
  87             elif name == "allocate":
  88                 (slice_urn, rspec_string, expiration, options) = args
  89                 slice_hrn, type = urn_to_hrn(slice_urn)
  90                 creds = []
  91                 users = options.get('sfa_users', [])
  92                 manifest_string = getattr(self.driver, "create_sliver")(slice_urn, slice_hrn, creds, rspec_string, users, options)
  93
  94                 # slivers allocation
  95                 rspec = RSpec(manifest_string)
  96                 slivers = rspec.version.get_nodes_with_slivers()
  97
  98                 ##SliverAllocation
  99                 for sliver in slivers:
 100                      client_id = sliver['client_id']
 101                      component_id = sliver['component_id']
 102                      component_name = sliver['component_name']
 103                      slice_name = slice_hrn.replace('.','-')
 104                      component_short_name = component_name.split('.')[0]
 105                      # self.driver.hrn
 106                      sliver_hrn = '%s.%s-%s' % (self.driver.hrn, 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()
 115
 116
 117                 # return manifest
 118                 rspec_version = RSpec(rspec_string).version
 119                 rspec_version_str = "%s"%rspec_version
 120                 options['geni_rspec_version'] = {'version': rspec_version_str.split(' ')[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                 sliver_allocations = dbsession.query (SliverAllocation).filter(constraint)
 131                 for sliver_allocation in sliver_allocations:
 132                      sliver_allocation.allocation_state = 'geni_provisioned'
 133
 134                 dbsession.commit()
 135                 result = self.describe(urns, '', options)
 136
 137             elif name == "status":
 138                 urns = args
 139                 options = {}
 140                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 141                 descr = self.describe(urns[0], '', options)
 142                 result = {'geni_urn': descr['geni_urn'],
 143                           'geni_slivers': descr['geni_slivers']}
 144
 145             elif name == "delete":
 146                 (urns, options) = args
 147                 slice_urn = urns[0]
 148                 slice_hrn, type = urn_to_hrn(slice_urn)
 149                 creds = []
 150                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 151                 descr = self.describe(urns, '', options)
 152                 result = []
 153                 for sliver_allocation in descr['geni_slivers']:
 154                      geni_sliver = {'geni_sliver_urn': sliver_allocation['geni_sliver_urn'],
 155                                     'geni_allocation_status': 'geni_unallocated',
 156                                     'geni_expires': sliver_allocation['geni_expires'],
 157                                     'geni_error': sliver_allocation['geni_error']}
 158
 159                      result.append(geni_sliver)
 160
 161                 getattr(self.driver, "delete_sliver")(slice_urn, slice_hrn, creds, options)
 162
 163                 #SliverAllocation
 164                 constraints = SliverAllocation.slice_urn.in_(urns)
 165                 sliver_allocations = dbsession.query(SliverAllocation).filter(constraints)
 166                 sliver_ids = [sliver_allocation.sliver_id for sliver_allocation in sliver_allocations]
 167                 SliverAllocation.delete_allocations(sliver_ids)
 168
 169
 170             elif name == "renew":
 171                 (urns, expiration_time, options) = args
 172                 slice_urn = urns[0]
 173                 slice_hrn, type = urn_to_hrn(slice_urn)
 174                 creds = []
 175
 176                 getattr(self.driver, "renew_sliver")(slice_urn, slice_hrn, creds, expiration_time, options)
 177
 178                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 179                 descr = self.describe(urns, '', options)
 180                 result = descr['geni_slivers']
 181
 182
 183             elif name == "perform_operational_action":
 184                 (urns, action, options) = args
 185                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 186                 result = self.describe(urns, '', options)['geni_slivers']
 187
 188
 189             else:
 190                 # same as v2 ( registry methods)
 191                 result=getattr(self.driver, name)(*args, **kwds)
 192             return result
 193         return func