sfa/methods/Resolve.py

   1 import types
   2
   3 from sfa.util.xrn import Xrn, urn_to_hrn
   4 from sfa.util.method import Method
   5 from sfa.util.parameter import Parameter, Mixed
   6 from sfa.trust.credential import Credential
   7 from sfa.util.record import SfaRecord
   8
   9 class Resolve(Method):
  10     """
  11     Resolve a record.
  12
  13     @param cred credential string authorizing the caller
  14     @param hrn human readable name to resolve (hrn or urn)
  15     @return a list of record dictionaries or empty list
  16     """
  17
  18     interfaces = ['registry']
  19
  20     accepts = [
  21         Mixed(Parameter(str, "Human readable name (hrn or urn)"),
  22               Parameter(list, "List of Human readable names ([hrn])")),
  23         Mixed(Parameter(str, "Credential string"),
  24               Parameter(list, "List of credentials)"))
  25         ]
  26
  27     returns = [SfaRecord]
  28
  29     def call(self, xrns, creds):
  30         type = None
  31         if not isinstance(xrns, types.ListType):
  32             type = Xrn(xrns).get_type()
  33             xrns=[xrns]
  34         hrns = [urn_to_hrn(xrn)[0] for xrn in xrns]
  35         #find valid credentials
  36         valid_creds = self.api.auth.checkCredentials(creds, 'resolve')
  37
  38         #log the call
  39         origin_hrn = Credential(string=valid_creds[0]).get_gid_caller().get_hrn()
  40         self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, origin_hrn, hrns, self.name))
  41
  42         # send the call to the right manager
  43         return self.api.manager.Resolve(self.api, xrns, type)
  44