sfa/methods/RemovePeerObject.py

   1 from sfa.util.faults import UnknownSfaType, SfaInvalidArgument
   2 from sfa.util.method import Method
   3 from sfa.util.parameter import Parameter, Mixed
   4 from sfa.util.table import SfaTable
   5 from sfa.trust.credential import Credential
   6
   7 class RemovePeerObject(Method):
   8     """
   9     Remove an peer object from the PLC records of a local aggregate.
  10     This method will be called by registry.remove() while removing
  11     a record from the local aggreage's PLCDB and sfa table. This
  12     method need not be directly called by end-user.
  13
  14     @param cred credential string
  15     @param record record as stored in the local registry
  16
  17     @return 1 if successful, faults otherwise
  18     """
  19
  20     interfaces = ['registry']
  21
  22     accepts = [
  23         Parameter(str, "Credential string"),
  24         Parameter(dict, "Record dictionary"),
  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, 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, record['hrn'], self.name))
  38
  39         self.api.auth.check(cred, "remove")
  40
  41         # Only allow the local interface or record owner to delete peer_records
  42         try: self.api.auth.verify_object_permission(record['hrn'])
  43         except: self.api.auth.verify_cred_is_me(cred)
  44
  45         table = SfaTable()
  46         hrn, type = record['hrn'], record['type']
  47         records = table.find({'hrn': hrn, 'type': type })
  48         for record in records:
  49             if record['peer_authority']:
  50                 self.remove_plc_record(record)
  51                 table.remove(record)
  52
  53         return 1
  54
  55     def remove_plc_record(self, record):
  56         type = record['type']
  57         if type == "user":
  58             persons = self.api.plshell.GetPersons(self.api.plauth, {'person_id' : record['pointer']})
  59             if not persons:
  60                 return 1
  61             person = persons[0]
  62             if person['peer_id']:
  63                 peer = self.get_peer_name(person['peer_id'])
  64                 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'person', person['person_id'], peer)
  65             self.api.plshell.DeletePerson(self.api.plauth, person['person_id'])
  66
  67         elif type == "slice":
  68             slices=self.api.plshell.GetSlices(self.api.plauth, {'slice_id' : record['pointer']})
  69             if not slices:
  70                 return 1
  71             slice=slices[0]
  72             if slice['peer_id']:
  73                 peer = self.get_peer_name(slice['peer_id'])
  74                 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'slice', slice['slice_id'], peer)
  75             self.api.plshell.DeleteSlice(self.api.plauth, slice['slice_id'])
  76         elif type == "authority":
  77             sites=self.api.plshell.GetSites(self.api.plauth, {'site_id' : record['pointer']})
  78             if not sites:
  79                 return 1
  80             site=sites[0]
  81             if site['peer_id']:
  82                 peer = self.get_peer_name(site['peer_id'])
  83                 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'site', site['site_id'], peer)
  84             self.api.plshell.DeleteSite(self.api.plauth, site['site_id'])
  85
  86         else:
  87             raise UnknownSfaType(type)
  88
  89         return 1
  90
  91     def get_peer_name(self, peer_id):
  92         peers = self.api.plshell.GetPeers(self.api.plauth, [peer_id], ['peername', 'shortname', 'hrn_root'])
  93         if not peers:
  94             raise SfaInvalidArgument, "No such peer"
  95         peer = peers[0]
  96         return peer['shortname']
  97
  98
  99