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
17 class create_slice(Method):
19 Instantiate the specified slice according to whats defined in the specified rspec
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
27 interfaces = ['aggregate', 'slicemgr']
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"))
37 returns = Parameter(int, "1 if successful")
39 def call(self, cred, hrn, requested_rspec, request_hash=None, origin_hrn=None):
41 origin_hrn=Credential(string=cred).get_gid_caller().get_hrn()
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')
52 self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, origin_hrn, hrn, self.name))
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 if incoming_rules.sorted_rule_list:
62 #incoming_rules.set_slice(hrn) # This is a temporary kludge. Eventually, we'd like to fetch the context requested by the match/target
64 contexts = incoming_rules.contexts
65 request_context = rspec_manager.fetch_context(hrn, origin_hrn, contexts)
66 incoming_rules.set_context(request_context)
67 rspec = incoming_rules.apply(requested_rspec)
69 rspec = requested_rspec
71 # send the call to the right manager
72 if sfa_aggregate_type not in ['pl']:
73 # To clean up after July 21 - SB
74 rspec = rspec_manager.create_slice(self.api, hrn, rspec)
77 manager_base = 'sfa.managers'
78 if self.api.interface in ['aggregate']:
79 mgr_type = self.api.config.SFA_AGGREGATE_TYPE
80 manager_module = manager_base + ".aggregate_manager_%s" % mgr_type
81 manager = __import__(manager_module, fromlist=[manager_base])
82 manager.create_slice(self.api, hrn, rspec)
83 elif self.api.interface in ['slicemgr']:
84 mgr_type = self.api.config.SFA_SM_TYPE
85 manager_module = manager_base + ".slice_manager_%s" % mgr_type
86 manager = __import__(manager_module, fromlist=[manager_base])
87 manager.create_slice(self.api, hrn, rspec, origin_hrn)