sfa/managers/aggregate_manager.py

   1 import socket
   2 from sfa.rspecs.version_manager import VersionManager
   3 from sfa.util.version import version_core
   4 from sfa.util.xrn import Xrn
   5 from sfa.util.callids import Callids
   6 from sfa.util.sfalogging import logger
   7 from sfa.util.faults import SfaInvalidArgument, InvalidRSpecVersion
   8
   9
  10 class AggregateManager:
  11
  12     def __init__ (self, config): pass
  13
  14     # essentially a union of the core version, the generic version (this code) and
  15     # whatever the driver needs to expose
  16
  17     def rspec_versions(self):
  18         version_manager = VersionManager()
  19         ad_rspec_versions = []
  20         request_rspec_versions = []
  21         for rspec_version in version_manager.versions:
  22             if rspec_version.content_type in ['*', 'ad']:
  23                 ad_rspec_versions.append(rspec_version.to_dict())
  24             if rspec_version.content_type in ['*', 'request']:
  25                 request_rspec_versions.append(rspec_version.to_dict())
  26         return {
  27             'geni_request_rspec_versions': request_rspec_versions,
  28             'geni_ad_rspec_versions': ad_rspec_versions,
  29             }
  30
  31     def get_rspec_version_string(self, rspec_version, options={}):
  32         version_string = "rspec_%s" % (rspec_version)
  33
  34         #panos adding the info option to the caching key (can be improved)
  35         if options.get('info'):
  36             version_string = version_string + "_"+options.get('info', 'default')
  37
  38         # Adding the list_leases option to the caching key
  39         if options.get('list_leases'):
  40             version_string = version_string + "_"+options.get('list_leases', 'default')
  41
  42         # Adding geni_available to caching key
  43         if options.get('geni_available'):
  44             version_string = version_string + "_" + str(options.get('geni_available'))
  45
  46         return version_string
  47
  48     def GetVersion(self, api, options):
  49         xrn=Xrn(api.hrn, type='authority')
  50         version = version_core()
  51         cred_types = [{'geni_type': 'geni_sfa', 'geni_version': str(i)} for i in range(4)[-2:]]
  52         version_generic = {
  53             'testbed': self.driver.testbed_name(),
  54             'interface':'aggregate',
  55             'hrn':xrn.get_hrn(),
  56             'urn':xrn.get_urn(),
  57             'geni_api': 3,
  58             'geni_api_versions': {'3': 'http://%s:%s' % (socket.gethostname(), api.config.sfa_aggregate_port)},
  59             'geni_single_allocation': 0, # Accept operations that act on as subset of slivers in a given state.
  60             'geni_allocate': 'geni_many',# Multiple slivers can exist and be incrementally added, including those which connect or overlap in some way.
  61             'geni_best_effort': 'true',
  62             'geni_credential_types': cred_types,
  63         }
  64         version.update(version_generic)
  65         version.update(self.rspec_versions())
  66         testbed_version = self.driver.aggregate_version()
  67         version.update(testbed_version)
  68         return version
  69
  70     def ListResources(self, api, creds, options):
  71         call_id = options.get('call_id')
  72         if Callids().already_handled(call_id): return ""
  73
  74         # get the rspec's return format from options
  75         version_manager = VersionManager()
  76         rspec_version = version_manager.get_version(options.get('geni_rspec_version'))
  77         version_string = self.get_rspec_version_string(rspec_version, options)
  78
  79         # look in cache first
  80         cached_requested = options.get('cached', True)
  81         if cached_requested and self.driver.cache:
  82             rspec = self.driver.cache.get(version_string)
  83             if rspec:
  84                 logger.debug("%s.ListResources returning cached advertisement" % (self.driver.__module__))
  85                 return rspec
  86
  87         rspec = self.driver.list_resources (rspec_version, options)
  88         if self.driver.cache:
  89             logger.debug("%s.ListResources stores advertisement in cache" % (self.driver.__module__))
  90             self.driver.cache.add(version_string, rspec)
  91         return rspec
  92
  93     def Describe(self, api, creds, urns, options):
  94         call_id = options.get('call_id')
  95         if Callids().already_handled(call_id): return ""
  96
  97         version_manager = VersionManager()
  98         rspec_version = version_manager.get_version(options.get('geni_rspec_version'))
  99         return self.driver.describe(urns, rspec_version, options)
 100
 101
 102     def Status (self, api, urns, creds, options):
 103         call_id = options.get('call_id')
 104         if Callids().already_handled(call_id): return {}
 105         return self.driver.status (urns, options=options)
 106
 107
 108     def Allocate(self, api, xrn, creds, rspec_string, options):
 109         """
 110         Allocate resources as described in a request RSpec argument
 111         to a slice with the named URN.
 112         """
 113         call_id = options.get('call_id')
 114         if Callids().already_handled(call_id): return ""
 115         return self.driver.allocate(xrn, rspec_string, options)
 116
 117     def Provision(self, api, xrns, creds, options):
 118         """
 119         Create the sliver[s] (slice) at this aggregate.
 120         Verify HRN and initialize the slice record in PLC if necessary.
 121         """
 122         call_id = options.get('call_id')
 123         if Callids().already_handled(call_id): return ""
 124
 125         # make sure geni_rspec_version is specified in options
 126         if 'geni_rspec_version' not in options:
 127             msg = 'geni_rspec_version is required and must be set in options struct'
 128             raise SfaInvalidArgument(msg, 'geni_rspec_version')
 129         # make sure we support the requested rspec version
 130         version_manager = VersionManager()
 131         rspec_version = version_manager.get_version(options['geni_rspec_version'])
 132         if not rspec_version:
 133             raise InvalidRSpecVersion(options['geni_rspec_version'])
 134
 135         return self.driver.provision(xrns, options)
 136
 137     def Delete(self, api, xrns, creds, options):
 138         call_id = options.get('call_id')
 139         if Callids().already_handled(call_id): return True
 140         return self.driver.delete(xrns, options)
 141
 142     def Renew(self, api, xrns, creds, expiration_time, options):
 143         call_id = options.get('call_id')
 144         if Callids().already_handled(call_id): return True
 145         return self.driver.renew(xrns, expiration_time, options)
 146
 147     def PerformOperationalAction(self, api, xrns, creds, action, options={}):
 148         call_id = options.get('call_id')
 149         if Callids().already_handled(call_id): return True
 150         return self.driver.perform_operational_action(xrns, action, options)
 151
 152     def Shutdown(self, api, xrn, creds, options={}):
 153         call_id = options.get('call_id')
 154         if Callids().already_handled(call_id): return True
 155         return self.driver.shutdown(xrn, options)
 156