sfa/methods/Resolve.py

   1 import traceback
   2 import types
   3 from sfa.util.faults import *
   4 from sfa.util.xrn import Xrn, urn_to_hrn
   5 from sfa.util.method import Method
   6 from sfa.util.parameter import Parameter, Mixed
   7 from sfa.trust.credential import Credential
   8 from sfa.util.record import SfaRecord
   9
  10 class Resolve(Method):
  11     """
  12     Resolve a record.
  13
  14     @param cred credential string authorizing the caller
  15     @param hrn human readable name to resolve (hrn or urn)
  16     @return a list of record dictionaries or empty list
  17     """
  18
  19     interfaces = ['registry']
  20
  21     accepts = [
  22         Mixed(Parameter(str, "Human readable name (hrn or urn)"),
  23               Parameter(list, "List of Human readable names ([hrn])")),
  24         Mixed(Parameter(str, "Credential string"),
  25               Parameter(list, "List of credentials)"))
  26         ]
  27
  28     returns = [SfaRecord]
  29
  30     def call(self, xrns, creds):
  31         type = None
  32         if not isinstance(xrns, types.ListType):
  33             type = Xrn(xrns).get_type()
  34             xrns=[xrns]
  35         hrns = [urn_to_hrn(xrn)[0] for xrn in xrns]
  36         #find valid credentials
  37         valid_creds = self.api.auth.checkCredentials(creds, 'resolve')
  38
  39         #log the call
  40         origin_hrn = Credential(string=valid_creds[0]).get_gid_caller().get_hrn()
  41         self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, origin_hrn, hrns, self.name))
  42
  43         # send the call to the right manager
  44         manager = self.api.get_interface_manager()
  45         return manager.resolve(self.api, xrns, type)
  46
  47
  48