sfa/methods/create_slice.py

   1 ### $Id$
   2 ### $URL$
   3
   4 from sfa.util.faults import *
   5 from sfa.util.misc import *
   6 from sfa.util.method import Method
   7 from sfa.util.parameter import Parameter, Mixed
   8 from sfa.trust.auth import Auth
   9 from sfa.plc.slices import Slices
  10 from sfa.util.config import Config
  11 # RSpecManager_pl is not used. This is just to resolve issues with the dynamic __import__ that comes later.
  12 import sfa.rspecs.aggregates.rspec_manager_pl
  13 from sfa.trust.credential import Credential
  14
  15
  16 class create_slice(Method):
  17     """
  18     Instantiate the specified slice according to whats defined in the specified rspec
  19
  20     @param cred credential string specifying the rights of the caller
  21     @param hrn human readable name of slice to instantiate
  22     @param rspec resource specification
  23     @return 1 is successful, faults otherwise
  24     """
  25
  26     interfaces = ['aggregate', 'slicemgr']
  27
  28     accepts = [
  29         Parameter(str, "Credential string"),
  30         Parameter(str, "Human readable name of slice to instantiate"),
  31         Parameter(str, "Resource specification"),
  32         ]
  33
  34     returns = Parameter(int, "1 if successful")
  35
  36     def call(self, cred, hrn, rspec, caller_cred=None):
  37         if caller_cred==None:
  38            caller_cred=cred
  39         #log the call
  40         self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, Credential(string=caller_cred).get_gid_caller().get_hrn(), hrn, self.name))
  41
  42         sfa_aggregate_type = Config().get_aggregate_rspec_type()
  43         self.api.auth.check(cred, 'createslice')
  44         if (sfa_aggregate_type == 'pl'):
  45             slices = Slices(self.api, caller_cred=caller_cred)
  46             slices.create_slice(hrn, rspec)
  47         else:
  48             # To clean up after July 21 - SB
  49             rspec_manager = __import__("sfa.rspecs.aggregates.rspec_manager_"+sfa_aggregate_type, fromlist = ["sfa.rspecs.aggregates"])
  50             rspec = rspec_manager.create_slice(self.api, hrn, rspec)
  51
  52         return 1