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')
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
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)
70 rspec = requested_rspec
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)
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)