geni/methods/resolve.py

   1
   2
   3
   4 from geni.util.faults import *
   5 from geni.util.excep import *
   6 from geni.util.method import Method
   7 from geni.util.parameter import Parameter, Mixed
   8 from geni.util.auth import Auth
   9 from geni.util.record import GeniRecord
  10 from geni.registry import Registries
  11 from geni.util.debug import log
  12
  13 class resolve(Method):
  14     """
  15     Resolve a record.
  16
  17     @param cred credential string authorizing the caller
  18     @param hrn human readable name to resolve
  19     @return a list of record dictionaries or empty list
  20     """
  21
  22     interfaces = ['registry']
  23
  24     accepts = [
  25         Parameter(str, "Credential string"),
  26         Parameter(str, "Human readable name (hrn)")
  27         ]
  28
  29     returns = [GeniRecord]
  30
  31     def call(self, cred, hrn):
  32
  33         self.api.auth.check(cred, 'resolve')
  34
  35         # is this a foreign record
  36         if not hrn.startswith(self.api.hrn):
  37             registries = Registries(self.api)
  38             credential = self.api.getCredential()
  39             for registry in registries:
  40                 if hrn.startswith(registry):
  41                     records = registries[registry].resolve(credential, hrn)
  42                     good_records = records
  43         else:
  44             auth_hrn = self.api.auth.get_authority(hrn)
  45             if not auth_hrn:
  46                 auth_hrn = hrn
  47             table = self.api.auth.get_auth_table(auth_hrn)
  48             records = table.resolve('*', hrn)
  49             if not records:
  50                 raise RecordNotFound(hrn)
  51             good_records = []
  52             for record in records:
  53                 try:
  54                     self.api.fill_record_info(record)
  55                     good_records.append(record)
  56                 except PlanetLabRecordDoesNotExist:
  57                     # silently drop the ones that are missing in PL
  58                     print >> log, "ignoring geni record ", record.get_name(), \
  59                               " because pl record does not exist"
  60                     table.remove(record)
  61
  62         print good_records
  63         dicts = [record.as_dict() for record in good_records]
  64
  65         return dicts
  66