sfa/methods/Resolve.py

   1 from sfa.util.faults import *
   2 from sfa.util.namespace import *
   3 from sfa.util.method import Method
   4 from sfa.util.parameter import Parameter
   5 from sfa.trust.credential import Credential
   6
   7 class Resolve(Method):
   8     """
   9     Lookup a URN and return information about the corresponding object.
  10     @param slice_urn (string) URN of slice to renew
  11     @param credentials ([string]) of credentials
  12
  13     """
  14     interfaces = ['registry']
  15     accepts = [
  16         Parameter(str, "URN"),
  17         Parameter(type([str]), "List of credentials"),
  18         ]
  19     returns = Parameter(bool, "Success or Failure")
  20
  21     def call(self, xrn, creds):
  22         for cred in creds:
  23             try:
  24                 self.api.auth.check(cred, 'resolve')
  25                 # Make sure it's an authority and not a user
  26                 if cred.get_gid_caller().get_type() != 'authority':
  27                     raise 'NotAuthority'
  28                 found = True
  29                 break
  30             except:
  31                 continue
  32
  33         if not found:
  34             raise InsufficientRights('Resolve: Credentials either did not verify, were no longer valid, or did not have appropriate privileges')
  35
  36
  37         manager_base = 'sfa.managers'
  38
  39         if self.api.interface in ['registry']:
  40             mgr_type = self.api.config.SFA_REGISTRY_TYPE
  41             manager_module = manager_base + ".registry_manager_%s" % mgr_type
  42             manager = __import__(manager_module, fromlist=[manager_base])
  43             return manager.Resolve(self.api, xrn, creds)
  44
  45         return {}