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
   6 from sfa.trust.credential import Credential
   7
   8 from sfa.storage.parameter import Parameter, Mixed
   9 from sfa.storage.record import SfaRecord
  10
  11 class Resolve(Method):
  12     """
  13     Resolve a record.
  14
  15     @param cred credential string authorizing the caller
  16     @param hrn human readable name to resolve (hrn or urn)
  17     @return a list of record dictionaries or empty list
  18     """
  19
  20     interfaces = ['registry']
  21
  22     accepts = [
  23         Mixed(Parameter(str, "Human readable name (hrn or urn)"),
  24               Parameter(list, "List of Human readable names ([hrn])")),
  25         Mixed(Parameter(str, "Credential string"),
  26               Parameter(list, "List of credentials)"))
  27         ]
  28
  29     returns = [SfaRecord]
  30
  31     def call(self, xrns, creds):
  32         type = None
  33         if not isinstance(xrns, types.ListType):
  34             type = Xrn(xrns).get_type()
  35             xrns=[xrns]
  36         hrns = [urn_to_hrn(xrn)[0] for xrn in xrns]
  37         #find valid credentials
  38         valid_creds = self.api.auth.checkCredentials(creds, 'resolve')
  39
  40         #log the call
  41         origin_hrn = Credential(string=valid_creds[0]).get_gid_caller().get_hrn()
  42         self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, origin_hrn, hrns, self.name))
  43
  44         # send the call to the right manager
  45         return self.api.manager.Resolve(self.api, xrns, type)
  46