sfa/methods/remove_peer_object.py

   1 from sfa.util.faults import *
   2 from sfa.util.method import Method
   3 from sfa.util.parameter import Parameter, Mixed
   4 from sfa.trust.auth import Auth
   5 from sfa.util.record import SfaRecord
   6 from sfa.util.table import SfaTable
   7 from sfa.util.debug import log
   8 from sfa.trust.credential import Credential
   9 from types import StringTypes
  10
  11 class remove_peer_object(Method):
  12     """
  13     Remove an peer object from the PLC records of a local aggregate.
  14     This method will be called by registry.remove() while removing
  15     a record from the local aggreage's PLCDB and sfa table. This
  16     method need not be directly called by end-user.
  17
  18     @param cred credential string
  19     @param record record as stored in the local registry
  20
  21     @return 1 if successful, faults otherwise
  22     """
  23
  24     interfaces = ['registry']
  25
  26     accepts = [
  27         Parameter(str, "Credential string"),
  28         Parameter(dict, "Record dictionary"),
  29         Mixed(Parameter(str, "Human readable name of the original caller"),
  30               Parameter(None, "Origin hrn not specified"))
  31         ]
  32
  33     returns = Parameter(int, "1 if successful")
  34
  35     def call(self, cred, record, origin_hrn=None):
  36         user_cred = Credential(string=cred)
  37
  38         #log the call
  39         if not origin_hrn:
  40             origin_hrn = user_cred.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, hrn, self.name))
  42
  43         self.api.auth.check(cred, "remove")
  44
  45         # Only allow the local interface or record owner to delete peer_records
  46         try: self.api.auth.verify_object_permission(record['hrn'])
  47         except: self.api.auth.verify_cred_is_me(cred)
  48
  49         table = SfaTable()
  50         hrn, type = record['hrn'], record['type']
  51         records = table.find({'hrn': hrn, 'type': type })
  52         for record in records:
  53           if record['peer_authority']:
  54             self.remove_plc_record(record)
  55             table.remove(record)
  56
  57         return 1
  58
  59     def remove_plc_record(self, record):
  60         type = record['type']
  61         if type == "user":
  62             persons = self.api.plshell.GetPersons(self.api.plauth, {'person_id' : record['pointer']})
  63             if not persons:
  64                 return 1
  65             person = persons[0]
  66             if person['peer_id']:
  67                 peer = self.get_peer_name(person['peer_id'])
  68                 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'person', person['person_id'], peer)
  69             self.api.plshell.DeletePerson(self.api.plauth, person['person_id'])
  70
  71         elif type == "slice":
  72             slices=self.api.plshell.GetSlices(self.api.plauth, {'slice_id' : record['pointer']})
  73             if not slices:
  74                 return 1
  75             slice=slices[0]
  76             if slice['peer_id']:
  77                 peer = self.get_peer_name(slice['peer_id'])
  78                 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'slice', slice['slice_id'], peer)
  79             self.api.plshell.DeleteSlice(self.api.plauth, slice['slice_id'])
  80         elif type == "authority":
  81             sites=self.api.plshell.GetSites(self.api.plauth, {'site_id' : record['pointer']})
  82             if not sites:
  83                 return 1
  84             site=sites[0]
  85             if site['peer_id']:
  86                 peer = self.get_peer_name(site['peer_id'])
  87                 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'site', site['site_id'], peer)
  88             self.api.plshell.DeleteSite(self.api.plauth, site['site_id'])
  89
  90         else:
  91             raise UnknownSfaType(type)
  92
  93         return 1
  94
  95     def get_peer_name(self, peer_id):
  96         peers = self.api.plshell.GetPeers(self.api.plauth, [peer_id], ['peername', 'shortname', 'hrn_root'])
  97         if not peers:
  98             raise SfaInvalidArgument, "No such peer"
  99         peer = peers[0]
 100         return peer['shortname']
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