sfa/methods/RegisterPeerObject.py

   1 from sfa.util.faults import SfaInvalidArgument
   2 from sfa.util.xrn import get_authority
   3 from sfa.util.method import Method
   4 from sfa.util.parameter import Parameter, Mixed
   5 from sfa.util.record import SfaRecord
   6 from sfa.util.table import SfaTable
   7 from sfa.trust.credential import Credential
   8
   9 class RegisterPeerObject(Method):
  10     """
  11     Register a peer object with the registry. In addition to being stored in the
  12     SFA database, the appropriate records will also be created in the
  13     PLC databases
  14
  15     @param cred credential string
  16     @param record_dict dictionary containing record fields
  17     @return gid string representation
  18     """
  19
  20     interfaces = ['registry']
  21
  22     accepts = [
  23         Parameter(str, "Credential string"),
  24         Parameter(dict, "Record dictionary containing record fields"),
  25         Mixed(Parameter(str, "Human readable name of the original caller"),
  26               Parameter(None, "Origin hrn not specified"))
  27         ]
  28
  29     returns = Parameter(int, "1 if successful")
  30
  31     def call(self, cred, record_dict, origin_hrn=None):
  32         user_cred = Credential(string=cred)
  33
  34         #log the call
  35         if not origin_hrn:
  36             origin_hrn = user_cred.get_gid_caller().get_hrn()
  37         self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, origin_hrn, None, self.name))
  38
  39         # validate the cred
  40         self.api.auth.check(cred, "register")
  41
  42         # make sure this is a peer record
  43         if 'peer_authority' not in record_dict or \
  44            not record_dict['peer_authority']:
  45             raise SfaInvalidArgument, "peer_authority must be specified"
  46
  47         record = SfaRecord(dict = record_dict)
  48         type, hrn, peer_authority = record['type'], record['hrn'], record['peer_authority']
  49         record['authority'] = get_authority(record['hrn'])
  50         # verify permissions
  51         self.api.auth.verify_cred_is_me(cred)
  52
  53         # check if record already exists
  54         table = SfaTable()
  55         existing_records = table.find({'type': type, 'hrn': hrn, 'peer_authority': peer_authority})
  56         if existing_records:
  57             for existing_record in existing_records:
  58                 if existing_record['pointer'] != record['pointer']:
  59                     record['record_id'] = existing_record['record_id']
  60                     table.update(record)
  61         else:
  62             record_id = table.insert(record)
  63
  64         return 1