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 # xxx 1-dbsession-per-request
  11 from sfa.storage.alchemy import dbsession
  12
  13 class V2ToV3Adapter:
  14
  15     def __init__ (self, 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(config)
  21         elif flavour == "fd":
  22             from sfa.federica.fddriver import FdDriver
  23             self.driver = FdDriver(config)
  24         elif flavour == "dummy":
  25             from sfa.dummy.dummydriver import DummyDriver
  26             self.driver = DummyDriver(config)
  27         elif flavour == "slab":
  28             from sfa.senslab.slabdriver import SlabDriver
  29             self.driver = SlabDriver(config)
  30         else:
  31           logger.info("DriverV2Adapter unknown flavour !!!\n supported flavours: pl, nitos, fd, dummy, slab")
  32
  33         # Caching
  34         if config.SFA_AGGREGATE_CACHING:
  35             if self.driver.cache:
  36                 self.cache = self.driver.cache
  37             else:
  38                 self.cache = Cache()
  39
  40
  41     def __getattr__(self, name):
  42         def func(*args, **kwds):
  43             if name == "list_resources":
  44                 (version, options) = args
  45                 slice_urn = slice_hrn = None
  46                 creds = []
  47                 rspec = getattr(self.driver, "list_resources")(slice_urn, slice_hrn, [], options)
  48                 result = rspec
  49
  50             elif name == "describe":
  51                 (urns, version, options) = args
  52                 slice_urn = urns[0]
  53                 slice_hrn, type = urn_to_hrn(slice_urn)
  54                 creds = []
  55                 rspec = getattr(self.driver, "list_resources")(slice_urn, slice_hrn, creds, options)
  56
  57                 # SliverAllocation
  58                 if len(urns) == 1 and Xrn(xrn=urns[0]).type == 'slice':
  59                     constraint = SliverAllocation.slice_urn.in_(urns)
  60                 else:
  61                     constraint = SliverAllocation.sliver_id.in_(urns)
  62
  63                 sliver_allocations = dbsession.query (SliverAllocation).filter        (constraint)
  64                 sliver_status = getattr(self.driver, "sliver_status")(slice_urn, slice_hrn)
  65                 if 'geni_expires' in sliver_status.keys():
  66                     geni_expires = sliver_status['geni_expires']
  67                 else:
  68                     geni_expires = ''
  69
  70                 geni_slivers = []
  71                 for sliver_allocation in sliver_allocations:
  72                     geni_sliver = {}
  73                     geni_sliver['geni_expires'] = geni_expires
  74                     geni_sliver['geni_allocation'] = sliver_allocation.allocation_state
  75                     geni_sliver['geni_sliver_urn'] = sliver_allocation.sliver_id
  76                     geni_sliver['geni_error'] = ''
  77                     if geni_sliver['geni_allocation'] == 'geni_allocated':
  78                         geni_sliver['geni_operational_status'] = 'geni_pending_allocation'
  79                     else:
  80                         geni_sliver['geni_operational_status'] = 'geni_ready'
  81                     geni_slivers.append(geni_sliver)
  82
  83
  84                 result = {'geni_urn': slice_urn,
  85                 'geni_rspec': rspec,
  86                 'geni_slivers': geni_slivers}
  87
  88             elif name == "allocate":
  89                 (slice_urn, rspec_string, expiration, options) = args
  90                 slice_hrn, type = urn_to_hrn(slice_urn)
  91                 creds = []
  92                 users = options.get('sfa_users', [])
  93                 manifest_string = getattr(self.driver, "create_sliver")(slice_urn, slice_hrn, creds, rspec_string, users, options)
  94
  95                 # slivers allocation
  96                 rspec = RSpec(manifest_string)
  97                 slivers = rspec.version.get_nodes_with_slivers()
  98
  99                 ##SliverAllocation
 100                 for sliver in slivers:
 101                      client_id = sliver['client_id']
 102                      component_id = sliver['component_id']
 103                      component_name = sliver['component_name']
 104                      slice_name = slice_hrn.replace('.','-')
 105                      component_short_name = component_name.split('.')[0]
 106                      # self.driver.hrn
 107                      sliver_hrn = '%s.%s-%s' % (self.driver.hrn, slice_name, component_short_name)
 108                      sliver_id = Xrn(sliver_hrn, type='sliver').urn
 109                      record = SliverAllocation(sliver_id=sliver_id,
 110                                       client_id=client_id,
 111                                       component_id=component_id,
 112                                       slice_urn = slice_urn,
 113                                       allocation_state='geni_allocated')
 114
 115                      record.sync()
 116
 117
 118                 # return manifest
 119                 rspec_version = RSpec(rspec_string).version
 120                 rspec_version_str = "%s"%rspec_version
 121                 options['geni_rspec_version'] = {'version': rspec_version_str.split(' ')[1], 'type': rspec_version_str.lower().split(' ')[0]}
 122                 result = self.describe([slice_urn], rspec_version, options)
 123
 124             elif name == "provision":
 125                 (urns, options) = args
 126                 if len(urns) == 1 and Xrn(xrn=urns[0]).type == 'slice':
 127                    constraint = SliverAllocation.slice_urn.in_(urns)
 128                 else:
 129                    constraint = SliverAllocation.sliver_id.in_(urns)
 130
 131                 sliver_allocations = dbsession.query (SliverAllocation).filter(constraint)
 132                 for sliver_allocation in sliver_allocations:
 133                      sliver_allocation.allocation_state = 'geni_provisioned'
 134
 135                 dbsession.commit()
 136                 result = self.describe(urns, '', options)
 137
 138             elif name == "status":
 139                 urns = args
 140                 options = {}
 141                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 142                 descr = self.describe(urns[0], '', options)
 143                 result = {'geni_urn': descr['geni_urn'],
 144                           'geni_slivers': descr['geni_slivers']}
 145
 146             elif name == "delete":
 147                 (urns, options) = args
 148                 slice_urn = urns[0]
 149                 slice_hrn, type = urn_to_hrn(slice_urn)
 150                 creds = []
 151                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 152                 descr = self.describe(urns, '', options)
 153                 result = []
 154                 for sliver_allocation in descr['geni_slivers']:
 155                      geni_sliver = {'geni_sliver_urn': sliver_allocation['geni_sliver_urn'],
 156                                     'geni_allocation_status': 'geni_unallocated',
 157                                     'geni_expires': sliver_allocation['geni_expires'],
 158                                     'geni_error': sliver_allocation['geni_error']}
 159
 160                      result.append(geni_sliver)
 161
 162                 getattr(self.driver, "delete_sliver")(slice_urn, slice_hrn, creds, options)
 163
 164                 #SliverAllocation
 165                 constraints = SliverAllocation.slice_urn.in_(urns)
 166                 sliver_allocations = dbsession.query(SliverAllocation).filter(constraints)
 167                 sliver_ids = [sliver_allocation.sliver_id for sliver_allocation in sliver_allocations]
 168                 SliverAllocation.delete_allocations(sliver_ids)
 169
 170
 171             elif name == "renew":
 172                 (urns, expiration_time, options) = args
 173                 slice_urn = urns[0]
 174                 slice_hrn, type = urn_to_hrn(slice_urn)
 175                 creds = []
 176
 177                 getattr(self.driver, "renew_sliver")(slice_urn, slice_hrn, creds, expiration_time, options)
 178
 179                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 180                 descr = self.describe(urns, '', options)
 181                 result = descr['geni_slivers']
 182
 183
 184             elif name == "perform_operational_action":
 185                 (urns, action, options) = args
 186                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 187                 result = self.describe(urns, '', options)['geni_slivers']
 188
 189
 190             else:
 191                 # same as v2 ( registry methods)
 192                 result=getattr(self.driver, name)(*args, **kwds)
 193             return result
 194         return func