1 ### $Id: get_credential.py 17576 2010-04-05 20:56:15Z tmack $
2 ### $URL: https://svn.planet-lab.org/svn/sfa/trunk/sfa/methods/get_credential.py $
4 from sfa.trust.credential import *
5 from sfa.trust.rights import *
6 from sfa.util.faults import *
7 from sfa.util.namespace import *
8 from sfa.util.method import Method
9 from sfa.util.parameter import Parameter, Mixed
10 from sfa.util.debug import log
11 from sfa.trust.credential import Credential
13 class GetCredential(Method):
15 Retrive a credential for an object
16 If cred == None then the behavior reverts to get_self_credential
18 @param hrn human readable name of object (hrn or urn)
19 @param cred credential object specifying rights of the caller
20 @param type type of object (user | slice | node | authority )
22 @return the string representation of a credential object
25 interfaces = ['registry']
28 Mixed(Parameter(str, "Credential string"),
29 Parameter(type([str]), "List of credentials")),
30 Parameter(str, "Human readable name (hrn or urn)"),
31 Mixed(Parameter(str, "Record type"),
32 Parameter(None, "Type not specified")),
35 returns = Parameter(str, "String representation of a credential object")
37 def call(self, creds, xrn, type):
40 hrn = urn_to_hrn(xrn)[0]
42 hrn, type = urn_to_hrn(xrn)
45 valid_creds = self.api.auth.checkCredentials(creds, 'getcredential')
46 self.api.auth.verify_object_belongs_to_me(hrn)
49 origin_hrn = Credential(string=valid_creds[0]).get_gid_caller().get_hrn()
50 self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, origin_hrn, hrn, self.name))
52 manager = self.api.get_interface_manager()
54 return manager.get_credential(self.api, xrn, type)