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, api):
  16         config = api.config
  17         flavour = config.SFA_GENERIC_FLAVOUR
  18         # to be cleaned
  19         if flavour == "nitos":
  20             from sfa.nitos.nitosdriver import NitosDriver
  21             self.driver = NitosDriver(api)
  22         elif flavour == "fd":
  23             from sfa.federica.fddriver import FdDriver
  24             self.driver = FdDriver(api)
  25         elif flavour == "iotlab":
  26             from sfa.iotlab.iotlabdriver import IotlabDriver
  27             self.driver = IotlabDriver(api)
  28         else:
  29           logger.info("DriverV2Adapter unknown flavour !!!\n supported flavours: pl, nitos, fd, iotlab")
  30
  31         # Caching
  32         if config.SFA_AGGREGATE_CACHING:
  33             if self.driver.cache:
  34                 self.cache = self.driver.cache
  35             else:
  36                 self.cache = Cache()
  37
  38
  39     def __getattr__(self, name):
  40         def func(*args, **kwds):
  41             if name == "list_resources":
  42                 (version, options) = args
  43                 slice_urn = slice_hrn = None
  44                 creds = []
  45                 rspec = getattr(self.driver, "list_resources")(slice_urn, slice_hrn, [], options)
  46                 result = rspec
  47
  48             elif name == "describe":
  49                 (urns, version, options) = args
  50                 slice_urn = urns[0]
  51                 slice_hrn, type = urn_to_hrn(slice_urn)
  52                 creds = []
  53                 rspec = getattr(self.driver, "list_resources")(slice_urn, slice_hrn, creds, options)
  54
  55                 # SliverAllocation
  56                 if len(urns) == 1 and Xrn(xrn=urns[0]).type == 'slice':
  57                     constraint = SliverAllocation.slice_urn.in_(urns)
  58                 else:
  59                     constraint = SliverAllocation.sliver_id.in_(urns)
  60
  61                 sliver_allocations = dbsession.query (SliverAllocation).filter        (constraint)
  62                 sliver_status = getattr(self.driver, "sliver_status")(slice_urn, slice_hrn)
  63                 if 'geni_expires' in sliver_status.keys():
  64                     geni_expires = sliver_status['geni_expires']
  65                 else:
  66                     geni_expires = ''
  67
  68                 geni_slivers = []
  69                 for sliver_allocation in sliver_allocations:
  70                     geni_sliver = {}
  71                     geni_sliver['geni_expires'] = geni_expires
  72                     geni_sliver['geni_allocation'] = sliver_allocation.allocation_state
  73                     geni_sliver['geni_sliver_urn'] = sliver_allocation.sliver_id
  74                     geni_sliver['geni_error'] = ''
  75                     if geni_sliver['geni_allocation'] == 'geni_allocated':
  76                         geni_sliver['geni_operational_status'] = 'geni_pending_allocation'
  77                     else:
  78                         geni_sliver['geni_operational_status'] = 'geni_ready'
  79                     geni_slivers.append(geni_sliver)
  80
  81
  82                 result = {'geni_urn': slice_urn,
  83                 'geni_rspec': rspec,
  84                 'geni_slivers': geni_slivers}
  85
  86             elif name == "allocate":
  87                 (slice_urn, rspec_string, expiration, options) = args
  88                 slice_hrn, type = urn_to_hrn(slice_urn)
  89                 creds = []
  90                 users = options.get('sfa_users', [])
  91                 manifest_string = getattr(self.driver, "create_sliver")(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, slice_name, component_short_name)
 106                      sliver_id = Xrn(sliver_hrn, type='sliver').urn
 107                      record = SliverAllocation(sliver_id=sliver_id,
 108                                       client_id=client_id,
 109                                       component_id=component_id,
 110                                       slice_urn = slice_urn,
 111                                       allocation_state='geni_allocated')
 112
 113                      record.sync()
 114
 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(' ')[1], 'type': rspec_version_str.lower().split(' ')[0]}
 120                 result = self.describe([slice_urn], rspec_version, options)
 121
 122             elif name == "provision":
 123                 (urns, options) = args
 124                 if len(urns) == 1 and Xrn(xrn=urns[0]).type == 'slice':
 125                    constraint = SliverAllocation.slice_urn.in_(urns)
 126                 else:
 127                    constraint = SliverAllocation.sliver_id.in_(urns)
 128
 129                 sliver_allocations = dbsession.query (SliverAllocation).filter(constraint)
 130                 for sliver_allocation in sliver_allocations:
 131                      sliver_allocation.allocation_state = 'geni_provisioned'
 132
 133                 dbsession.commit()
 134                 result = self.describe(urns, '', options)
 135
 136             elif name == "status":
 137                 urns = args
 138                 options = {}
 139                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 140                 descr = self.describe(urns[0], '', options)
 141                 result = {'geni_urn': descr['geni_urn'],
 142                           'geni_slivers': descr['geni_slivers']}
 143
 144             elif name == "delete":
 145                 (urns, options) = args
 146                 slice_urn = urns[0]
 147                 slice_hrn, type = urn_to_hrn(slice_urn)
 148                 creds = []
 149                 options['geni_rspec_version'] = {'version': '3', 'type': 'GENI'}
 150                 descr = self.describe(urns, '', options)
 151                 result = []
 152                 for sliver_allocation in descr['geni_slivers']:
 153                      geni_sliver = {'geni_sliver_urn': sliver_allocation['geni_sliver_urn'],
 154                                     'geni_allocation_status': 'geni_unallocated',
 155                                     'geni_expires': sliver_allocation['geni_expires'],
 156                                     'geni_error': sliver_allocation['geni_error']}
 157
 158                      result.append(geni_sliver)
 159
 160                 getattr(self.driver, "delete_sliver")(slice_urn, slice_hrn, creds, options)
 161
 162                 #SliverAllocation
 163                 constraints = SliverAllocation.slice_urn.in_(urns)
 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)
 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