sfa/methods/ListResources.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.trust.credential import Credential
   6 from sfatables.runtime import SFATablesRules
   7 import sys
   8 import zlib
   9
  10 class ListResources(Method):
  11     """
  12     Returns information about available resources or resources allocated to this slice
  13     @param credential list
  14     @param options dictionary
  15     @return string
  16     """
  17     interfaces = ['geni_am']
  18     accepts = [
  19         Parameter(type([str]), "List of credentials"),
  20         Parameter(dict, "Options")
  21         ]
  22     returns = Parameter(str, "List of resources")
  23
  24     def call(self, creds, options):
  25         self.api.logger.info("interface: %s\tmethod-name: %s" % (self.api.interface, self.name))
  26
  27         # Find the valid credentials
  28         hrn = None
  29         if options.has_key('geni_slice_urn'):
  30             xrn = options['geni_slice_urn']
  31             hrn, _ = urn_to_hrn(xrn)
  32
  33         ValidCreds = self.api.auth.checkCredentials(creds, '', hrn)
  34         origin_hrn = Credential(string=ValidCreds[0]).get_gid_caller().get_hrn()
  35
  36
  37         manager_base = 'sfa.managers'
  38
  39         if self.api.interface in ['geni_am']:
  40             mgr_type = self.api.config.SFA_GENI_AGGREGATE_TYPE
  41             manager_module = manager_base + ".geni_am_%s" % mgr_type
  42             manager = __import__(manager_module, fromlist=[manager_base])
  43             rspec = manager.ListResources(self.api, ValidCreds, options)
  44             outgoing_rules = SFATablesRules('OUTGOING')
  45
  46
  47         filtered_rspec = rspec
  48         if outgoing_rules.sorted_rule_list:
  49             context = {'sfa':{'user':{'hrn':origin_hrn}, 'slice':{'hrn':None}}}
  50             outgoing_rules.set_context(context)
  51             filtered_rspec = outgoing_rules.apply(rspec)
  52
  53         if options.has_key('geni_compressed') and options['geni_compressed'] == True:
  54             filtered_rspec = zlib.compress(rspec).encode('base64')
  55
  56
  57         return filtered_rspec
  58
  59