Looks like that in the recent release of util-vserver, these variables cannot be...
[sfa.git] / sfa / methods / create_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.plc.slices import Slices
10 from sfa.util.config import Config
11 # RSpecManager_pl is not used. It's used to make sure the module is in place.
12 import sfa.rspecs.aggregates.rspec_manager_pl
13 from sfa.trust.credential import Credential
14 from sfatables.runtime import SFATablesRules
15
16
17 class create_slice(Method):
18     """
19     Instantiate the specified slice according to whats defined in the specified rspec      
20
21     @param cred credential string specifying the rights of the caller
22     @param hrn human readable name of slice to instantiate
23     @param rspec resource specification
24     @return 1 is successful, faults otherwise  
25     """
26
27     interfaces = ['aggregate', 'slicemgr']
28     
29     accepts = [
30         Parameter(str, "Credential string"),
31         Parameter(str, "Human readable name of slice to instantiate"),
32         Parameter(str, "Resource specification"),
33         Mixed(Parameter(str, "Request hash"),
34               Parameter(None, "Request hash not specified"))
35         ]
36
37     returns = Parameter(int, "1 if successful")
38     
39     def call(self, cred, hrn, requested_rspec, request_hash=None, origin_hrn=None):
40         if origin_hrn==None:
41             origin_hrn=Credential(string=cred).get_gid_caller().get_hrn()
42         
43         # This cred will be an slice cred, not a user, so we cant use it to
44         # authenticate the caller's request_hash. Let just get the caller's gid
45         # from the cred and authenticate using that
46         client_gid = Credential(string=cred).get_gid_caller()
47         client_gid_str = client_gid.save_to_string(save_parents=True)
48         self.api.auth.authenticateGid(client_gid_str, [cred, hrn, requested_rspec], request_hash)
49         self.api.auth.check(cred, 'createslice')
50
51         #log the call
52         self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, origin_hrn, hrn, self.name))
53
54         sfa_aggregate_type = Config().get_aggregate_rspec_type()
55         rspec_manager = __import__("sfa.rspecs.aggregates.rspec_manager_"+sfa_aggregate_type, fromlist = ["sfa.rspecs.aggregates"])
56         #Filter the incoming rspec using sfatables
57         if self.api.interface in ['slicemgr']:
58             incoming_rules = SFATablesRules('FORWARD-INCOMING')
59         elif self.api.interface in ['aggregate']:
60             incoming_rules = SFATablesRules('INCOMING')
61
62         if incoming_rules.sorted_rule_list:
63             #incoming_rules.set_slice(hrn) # This is a temporary kludge. Eventually, we'd like to fetch the context requested by the match/target
64
65             contexts = incoming_rules.contexts
66             request_context = rspec_manager.fetch_context(hrn, origin_hrn, contexts)
67             incoming_rules.set_context(request_context)
68             rspec = incoming_rules.apply(requested_rspec)
69         else:   
70             rspec = requested_rspec
71
72         # send the call to the right manager
73         if sfa_aggregate_type not in ['pl']:
74             # To clean up after July 21 - SB
75             rspec = rspec_manager.create_slice(self.api, hrn, rspec)
76             return 1
77
78         manager_base = 'sfa.managers'
79         if self.api.interface in ['aggregate']:
80             mgr_type = self.api.config.SFA_AGGREGATE_TYPE
81             manager_module = manager_base + ".aggregate_manager_%s" % mgr_type
82             manager = __import__(manager_module, fromlist=[manager_base])
83             manager.create_slice(self.api, hrn, rspec)
84         elif self.api.interface in ['slicemgr']:
85             mgr_type = self.api.config.SFA_SM_TYPE
86             manager_module = manager_base + ".slice_manager_%s" % mgr_type
87             manager = __import__(manager_module, fromlist=[manager_base])
88             manager.create_slice(self.api, hrn, rspec, origin_hrn)
89
90         return 1