1 ### $Id: get_ticket.py 17732 2010-04-19 21:10:45Z tmack $
2 ### $URL: https://svn.planet-lab.org/svn/sfa/trunk/sfa/methods/get_ticket.py $
4 from sfa.util.faults import *
5 from sfa.util.xrn import urn_to_hrn
6 from sfa.util.method import Method
7 from sfa.util.parameter import Parameter, Mixed
8 from sfa.trust.auth import Auth
9 from sfa.util.config import Config
10 from sfa.trust.credential import Credential
11 from sfa.util.sfatablesRuntime import run_sfatables
13 class GetTicket(Method):
15 Retrieve a ticket. This operation is currently implemented on PLC
16 only (see SFA, engineering decisions); it is not implemented on
19 The ticket is filled in with information from the PLC database. This
20 information includes resources, and attributes such as user keys and
23 @param cred credential string
24 @param name name of the slice to retrieve a ticket for (hrn or urn)
25 @param rspec resource specification dictionary
27 @return the string representation of a ticket object
30 interfaces = ['aggregate', 'slicemgr']
33 Parameter(str, "Human readable name of slice to retrive a ticket for (hrn or urn)"),
34 Mixed(Parameter(str, "Credential string"),
35 Parameter(type([str]), "List of credentials")),
36 Parameter(str, "Resource specification (rspec)"),
37 Parameter(type([]), "List of user information")
40 returns = Parameter(str, "String representation of a ticket object")
42 def call(self, xrn, creds, rspec, users):
43 hrn, type = urn_to_hrn(xrn)
44 # Find the valid credentials
45 valid_creds = self.api.auth.checkCredentials(creds, 'getticket', hrn)
46 origin_hrn = Credential(string=valid_creds[0]).get_gid_caller().get_hrn()
49 self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, origin_hrn, hrn, self.name))
51 manager = self.api.get_interface_manager()
53 # filter rspec through sfatables
54 if self.api.interface in ['aggregate']:
55 chain_name = 'OUTGOING'
56 elif self.api.interface in ['slicemgr']:
57 chain_name = 'FORWARD-OUTGOING'
58 rspec = run_sfatables(chain_name, hrn, origin_hrn, rspec)
60 # remove nodes that are not available at this interface from the rspec
61 ticket = manager.get_ticket(self.api, xrn, creds, rspec, users)