sfa/managers/aggregate_manager.py

   1 # pylint: disable=c0111, c0103, r0201
   2
   3 from sfa.rspecs.version_manager import VersionManager
   4 from sfa.util.version import version_core
   5 from sfa.util.xrn import Xrn
   6 from sfa.util.callids import Callids
   7 from sfa.util.sfalogging import logger
   8 from sfa.util.faults import SfaInvalidArgument, InvalidRSpecVersion
   9 from sfa.server.api_versions import ApiVersions
  10
  11
  12 class AggregateManager:
  13
  14     def __init__(self, config):
  15         pass
  16
  17     # essentially a union of the core version, the generic version (this code) and
  18     # whatever the driver needs to expose
  19
  20     def rspec_versions(self):
  21         version_manager = VersionManager()
  22         ad_rspec_versions = []
  23         request_rspec_versions = []
  24         for rspec_version in version_manager.versions:
  25             # avoid publishing non-relevant entries
  26             # but stay safe however
  27             try:
  28                 if not rspec_version.extensions \
  29                   and not rspec_version.namespace \
  30                   and not rspec_version.schema:
  31                     continue
  32             except Exception as exc:
  33                 pass
  34             if rspec_version.content_type in ['*', 'ad']:
  35                 ad_rspec_versions.append(rspec_version.to_dict())
  36             if rspec_version.content_type in ['*', 'request']:
  37                 request_rspec_versions.append(rspec_version.to_dict())
  38         return {
  39             'geni_request_rspec_versions': request_rspec_versions,
  40             'geni_ad_rspec_versions': ad_rspec_versions,
  41         }
  42
  43     def get_rspec_version_string(self, rspec_version, options=None):
  44         if options is None:
  45             options = {}
  46         version_string = "rspec_%s" % (rspec_version)
  47
  48         # panos adding the info option to the caching key (can be improved)
  49         if options.get('info'):
  50             version_string = version_string + \
  51                 "_" + options.get('info', 'default')
  52
  53         # Adding the list_leases option to the caching key
  54         if options.get('list_leases'):
  55             version_string = version_string + "_" + \
  56                 options.get('list_leases', 'default')
  57
  58         # Adding geni_available to caching key
  59         if options.get('geni_available'):
  60             version_string = version_string + "_" + \
  61                 str(options.get('geni_available'))
  62
  63         return version_string
  64
  65     def GetVersion(self, api, options):
  66         xrn = Xrn(api.hrn, type='authority+am')
  67         version = version_core()
  68         cred_types = [{'geni_type': 'geni_sfa',
  69                        'geni_version': str(i)} for i in range(4)[-2:]]
  70         geni_api_versions = ApiVersions().get_versions()
  71         geni_api_versions[
  72             '3'] = 'http://%s:%s' % (api.config.sfa_aggregate_host, api.config.sfa_aggregate_port)
  73         version_generic = {
  74             'testbed': api.driver.testbed_name(),
  75             'interface': 'aggregate',
  76             'sfa': 3,
  77             'hrn': xrn.get_hrn(),
  78             'urn': xrn.get_urn(),
  79             'geni_api': 3,
  80             'geni_api_versions': geni_api_versions,
  81             # Accept operations that act on as subset of slivers in a given
  82             # state.
  83             'geni_single_allocation': 0,
  84             # Multiple slivers can exist and be incrementally added, including
  85             # those which connect or overlap in some way.
  86             'geni_allocate': 'geni_many',
  87             'geni_credential_types': cred_types,
  88             'geni_handles_speaksfor': True,     # supports 'speaks for' credentials
  89         }
  90         version.update(version_generic)
  91         version.update(self.rspec_versions())
  92         testbed_version = api.driver.aggregate_version()
  93         version.update(testbed_version)
  94         return version
  95
  96     def ListResources(self, api, creds, options):
  97         call_id = options.get('call_id')
  98         if Callids().already_handled(call_id):
  99             return ""
 100
 101         # get the rspec's return format from options
 102         version_manager = VersionManager()
 103         rspec_version = version_manager.get_version(
 104             options.get('geni_rspec_version'))
 105         version_string = self.get_rspec_version_string(rspec_version, options)
 106
 107         # look in cache first
 108         cached_requested = options.get('cached', True)
 109         if cached_requested and api.driver.cache:
 110             rspec = api.driver.cache.get(version_string)
 111             if rspec:
 112                 logger.debug("%s.ListResources returning cached advertisement" % (
 113                     api.driver.__module__))
 114                 return rspec
 115
 116         rspec = api.driver.list_resources(rspec_version, options)
 117         if api.driver.cache:
 118             logger.debug("%s.ListResources stores advertisement in cache" % (
 119                 api.driver.__module__))
 120             api.driver.cache.add(version_string, rspec)
 121         return rspec
 122
 123     def Describe(self, api, creds, urns, options):
 124         call_id = options.get('call_id')
 125         if Callids().already_handled(call_id):
 126             return ""
 127
 128         version_manager = VersionManager()
 129         rspec_version = version_manager.get_version(
 130             options.get('geni_rspec_version'))
 131         return api.driver.describe(urns, rspec_version, options)
 132
 133     def Status(self, api, urns, creds, options):
 134         call_id = options.get('call_id')
 135         if Callids().already_handled(call_id):
 136             return {}
 137         return api.driver.status(urns, options=options)
 138
 139     def Allocate(self, api, xrn, creds, rspec_string, expiration, options):
 140         """
 141         Allocate resources as described in a request RSpec argument
 142         to a slice with the named URN.
 143         """
 144         call_id = options.get('call_id')
 145         if Callids().already_handled(call_id):
 146             return ""
 147         return api.driver.allocate(xrn, rspec_string, expiration, options)
 148
 149     def Provision(self, api, xrns, creds, options):
 150         """
 151         Create the sliver[s] (slice) at this aggregate.
 152         Verify HRN and initialize the slice record in PLC if necessary.
 153         """
 154         call_id = options.get('call_id')
 155         if Callids().already_handled(call_id):
 156             return ""
 157
 158         # make sure geni_rspec_version is specified in options
 159         if 'geni_rspec_version' not in options:
 160             msg = 'geni_rspec_version is required and must be set in options struct'
 161             raise SfaInvalidArgument(msg, 'geni_rspec_version')
 162         # make sure we support the requested rspec version
 163         version_manager = VersionManager()
 164         rspec_version = version_manager.get_version(
 165             options['geni_rspec_version'])
 166         if not rspec_version:
 167             raise InvalidRSpecVersion(options['geni_rspec_version'])
 168
 169         return api.driver.provision(xrns, options)
 170
 171     def Delete(self, api, xrns, creds, options):
 172         call_id = options.get('call_id')
 173         if Callids().already_handled(call_id):
 174             return True
 175         return api.driver.delete(xrns, options)
 176
 177     def Renew(self, api, xrns, creds, expiration_time, options):
 178         call_id = options.get('call_id')
 179         if Callids().already_handled(call_id):
 180             return True
 181
 182         return api.driver.renew(xrns, expiration_time, options)
 183
 184     def PerformOperationalAction(self, api, xrns, creds, action, options=None):
 185         if options is None:
 186             options = {}
 187         call_id = options.get('call_id')
 188         if Callids().already_handled(call_id):
 189             return True
 190         return api.driver.perform_operational_action(xrns, action, options)
 191
 192     def Shutdown(self, api, xrn, creds, options=None):
 193         if options is None:
 194             options = {}
 195         call_id = options.get('call_id')
 196         if Callids().already_handled(call_id):
 197             return True
 198         return api.driver.shutdown(xrn, options)