geni/methods/resolve.py

   1 ### $Id$
   2 ### $URL$
   3
   4 from geni.util.faults import *
   5 from geni.util.method import Method
   6 from geni.util.parameter import Parameter, Mixed
   7 from geni.util.auth import Auth
   8 from geni.util.record import GeniRecord
   9 from geni.registry import Registries
  10 from geni.util.debug import log
  11
  12 class resolve(Method):
  13     """
  14     Resolve a record.
  15
  16     @param cred credential string authorizing the caller
  17     @param hrn human readable name to resolve
  18     @return a list of record dictionaries or empty list
  19     """
  20
  21     interfaces = ['registry']
  22
  23     accepts = [
  24         Parameter(str, "Credential string"),
  25         Parameter(str, "Human readable name (hrn)")
  26         ]
  27
  28     returns = [GeniRecord]
  29
  30     def call(self, cred, hrn):
  31
  32         self.api.auth.check(cred, 'resolve')
  33         good_records = []
  34         try:
  35             auth_hrn = self.api.auth.get_authority(hrn)
  36             if not auth_hrn:
  37                 auth_hrn = hrn
  38             table = self.api.auth.get_auth_table(auth_hrn)
  39             records = table.resolve('*', hrn)
  40             if not records:
  41                 raise RecordNotFound(hrn)
  42             good_records = []
  43             for record in records:
  44                 try:
  45                     self.api.fill_record_info(record)
  46                     good_records.append(record)
  47                 except PlanetLabRecordDoesNotExist:
  48                     # silently drop the ones that are missing in PL
  49                     print >> log, "ignoring geni record ", record.get_name(), \
  50                               " because pl record does not exist"
  51                     table.remove(record)
  52         except:
  53             # is this a foreign record
  54             registries = Registries(self.api)
  55             credential = self.api.getCredential()
  56             for registry in registries:
  57                 if hrn.startswith(registry) and not registry in [self.api.hrn]:
  58                     records = registries[registry].resolve(credential, hrn)
  59                     good_records = records
  60         dicts = [record.as_dict() for record in good_records]
  61
  62         return dicts
  63