1 from sfa.util.xrn import urn_to_hrn
2 from sfa.util.method import Method
3 from sfa.util.parameter import Parameter, Mixed
4 from sfa.util.sfatablesRuntime import run_sfatables
6 from sfa.trust.credential import Credential
8 class GetTicket(Method):
10 Retrieve a ticket. This operation is currently implemented on PLC
11 only (see SFA, engineering decisions); it is not implemented on
14 The ticket is filled in with information from the PLC database. This
15 information includes resources, and attributes such as user keys and
18 @param cred credential string
19 @param name name of the slice to retrieve a ticket for (hrn or urn)
20 @param rspec resource specification dictionary
22 @return the string representation of a ticket object
25 interfaces = ['aggregate', 'slicemgr']
28 Parameter(str, "Human readable name of slice to retrive a ticket for (hrn or urn)"),
29 Mixed(Parameter(str, "Credential string"),
30 Parameter(type([str]), "List of credentials")),
31 Parameter(str, "Resource specification (rspec)"),
32 Parameter(type([]), "List of user information")
35 returns = Parameter(str, "String representation of a ticket object")
37 def call(self, xrn, creds, rspec, users):
38 hrn, type = urn_to_hrn(xrn)
39 # Find the valid credentials
40 valid_creds = self.api.auth.checkCredentials(creds, 'getticket', hrn)
41 origin_hrn = Credential(string=valid_creds[0]).get_gid_caller().get_hrn()
44 self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, origin_hrn, hrn, self.name))
46 manager = self.api.get_interface_manager()
48 # filter rspec through sfatables
49 if self.api.interface in ['aggregate']:
50 chain_name = 'OUTGOING'
51 elif self.api.interface in ['slicemgr']:
52 chain_name = 'FORWARD-OUTGOING'
53 rspec = run_sfatables(chain_name, hrn, origin_hrn, rspec)
55 # remove nodes that are not available at this interface from the rspec
56 ticket = manager.get_ticket(self.api, xrn, creds, rspec, users)