d2654b2c3f7af036cefeaf3661a085a17b914001
[sfa.git] / sfa / methods / CreateSliver.py
1 from sfa.util.faults import *
2 from sfa.util.namespace import *
3 from sfa.util.method import Method
4 from sfa.util.parameter import Parameter, Mixed
5 from sfa.util.sfatablesRuntime import run_sfatables
6 import sys
7 from sfa.trust.credential import Credential
8 from sfa.util.sfalogging import logger
9
10 class CreateSliver(Method):
11     """
12     Allocate resources to a slice.  This operation is expected to
13     start the allocated resources asynchornously after the operation
14     has successfully completed.  Callers can check on the status of
15     the resources using SliverStatus.
16
17     @param slice_urn (string) URN of slice to allocate to
18     @param credentials ([string]) of credentials
19     @param rspec (string) rspec to allocate
20     
21     """
22     interfaces = ['aggregate', 'slicemgr']
23     accepts = [
24         Parameter(str, "Slice URN"),
25         Mixed(Parameter(str, "Credential string"),
26               Parameter(type([str]), "List of credentials")),
27         Parameter(str, "RSpec"),
28         Parameter(type([]), "List of user information")
29         ]
30     returns = Parameter(str, "Allocated RSpec")
31
32     def call(self, slice_xrn, creds, rspec, users):
33         hrn, type = urn_to_hrn(slice_xrn)
34
35         self.api.logger.info("interface: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, hrn, self.name))
36
37         # Find the valid credentials
38         valid_creds = self.api.auth.checkCredentials(creds, 'createsliver', hrn)
39         origin_hrn = Credential(string=valid_creds[0]).get_gid_caller().get_hrn()
40
41         manager = self.api.get_interface_manager()
42         
43         # flter rspec through sfatables
44         if self.api.interface in ['aggregate']:
45             chain_name = 'INCOMING'
46         elif self.api.interface in ['slicemgr']:
47             chain_name = 'FORWARD-INCOMING'
48         rspec = run_sfatables(chain_name, hrn, origin_hrn, rspec)
49         allocated = manager.create_slice(self.api, slice_xrn, creds, rspec, users)
50
51         return rspec 
52