get caller's hrn from the credentials gid_origin_caller object
[sfa.git] / sfa / methods / start_slice.py
1 ### $Id$
2 ### $URL$
3
4 from sfa.util.faults import *
5 from sfa.util.misc import *
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.trust.credential import Credential
10
11 class start_slice(Method):
12     """
13     Start the specified slice      
14
15     @param cred credential string specifying the rights of the caller
16     @param hrn human readable name of slice to instantiate
17     @return 1 is successful, faults otherwise  
18     """
19
20     interfaces = ['aggregate', 'slicemgr', 'component']
21     
22     accepts = [
23         Parameter(str, "Credential string"),
24         Parameter(str, "Human readable name of slice to instantiate"),
25         Mixed(Parameter(str, "Request hash"),
26               Parameter(None, "Request hash not specified"))
27         ]
28
29     returns = [Parameter(int, "1 if successful")]
30     
31     def call(self, cred, hrn, request_hash=None):
32         user_cred = Credential(string=cred)
33
34         #log the call
35         gid_origin_caller = user_cred.get_gid_origin_caller()
36         origin_hrn = gid_origin_caller.get_hrn()
37         self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, origin_hrn, hrn, self.name))
38
39         # This cred will be an slice cred, not a user, so we cant use it to
40         # authenticate the caller's request_hash. Let just get the caller's gid
41         # from the cred and authenticate using that
42         client_gid = Credential(string=cred).get_gid_caller()
43         client_gid_str = client_gid.save_to_string(save_parents=True)
44         self.api.auth.authenticateGid(client_gid_str, [cred, hrn], request_hash)
45         self.api.auth.check(cred, 'startslice')
46        
47         # send the call to the right manager
48         manager_base = 'sfa.managers'
49         if self.api.interface in ['component']:
50             mgr_type = self.api.config.SFA_CM_TYPE
51             manager_module = manager_base + ".component_manager_%s" % mgr_type
52             manager = __import__(manager_module, fromlist=[manager_base])
53             manager.start_slice(self.api, hrn)
54         elif self.api.interface in ['aggregate']:
55             mgr_type = self.api.config.SFA_AGGREGATE_TYPE
56             manager_module = manager_base + ".aggregate_manager_%s" % mgr_type
57             manager = __import__(manager_module, fromlist=[manager_base])
58             manager.start_slice(self.api, hrn)
59         elif self.api.interface in ['slicemgr']:
60             mgr_type = self.api.config.SFA_SM_TYPE
61             manager_module = manager_base + ".slice_manager_%s" % mgr_type
62             manager = __import__(manager_module, fromlist=[manager_base])
63             manager.start_slice(self.api, hrn)
64  
65         return 1