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_credential_types': cred_types,
  62         }
  63         version.update(version_generic)
  64         version.update(self.rspec_versions())
  65         testbed_version = self.driver.aggregate_version()
  66         version.update(testbed_version)
  67         return version
  68
  69     def ListResources(self, api, creds, options):
  70         call_id = options.get('call_id')
  71         if Callids().already_handled(call_id): return ""
  72
  73         # get the rspec's return format from options
  74         version_manager = VersionManager()
  75         rspec_version = version_manager.get_version(options.get('geni_rspec_version'))
  76         version_string = self.get_rspec_version_string(rspec_version, options)
  77
  78         # look in cache first
  79         cached_requested = options.get('cached', True)
  80         if cached_requested and self.driver.cache:
  81             rspec = self.driver.cache.get(version_string)
  82             if rspec:
  83                 logger.debug("%s.ListResources returning cached advertisement" % (self.driver.__module__))
  84                 return rspec
  85
  86         rspec = self.driver.list_resources (rspec_version, options)
  87         if self.driver.cache:
  88             logger.debug("%s.ListResources stores advertisement in cache" % (self.driver.__module__))
  89             self.driver.cache.add(version_string, rspec)
  90         return rspec
  91
  92     def Describe(self, api, creds, urns, options):
  93         call_id = options.get('call_id')
  94         if Callids().already_handled(call_id): return ""
  95
  96         version_manager = VersionManager()
  97         rspec_version = version_manager.get_version(options.get('geni_rspec_version'))
  98         return self.driver.describe(urns, rspec_version, options)
  99
 100
 101     def Status (self, api, urns, creds, options):
 102         call_id = options.get('call_id')
 103         if Callids().already_handled(call_id): return {}
 104         return self.driver.status (urns, options=options)
 105
 106
 107     def Allocate(self, api, xrn, creds, rspec_string, expiration, options):
 108         """
 109         Allocate resources as described in a request RSpec argument
 110         to a slice with the named URN.
 111         """
 112         call_id = options.get('call_id')
 113         if Callids().already_handled(call_id): return ""
 114         return self.driver.allocate(xrn, rspec_string, expiration, options)
 115
 116     def Provision(self, api, xrns, creds, options):
 117         """
 118         Create the sliver[s] (slice) at this aggregate.
 119         Verify HRN and initialize the slice record in PLC if necessary.
 120         """
 121         call_id = options.get('call_id')
 122         if Callids().already_handled(call_id): return ""
 123
 124         # make sure geni_rspec_version is specified in options
 125         if 'geni_rspec_version' not in options:
 126             msg = 'geni_rspec_version is required and must be set in options struct'
 127             raise SfaInvalidArgument(msg, 'geni_rspec_version')
 128         # make sure we support the requested rspec version
 129         version_manager = VersionManager()
 130         rspec_version = version_manager.get_version(options['geni_rspec_version'])
 131         if not rspec_version:
 132             raise InvalidRSpecVersion(options['geni_rspec_version'])
 133
 134         return self.driver.provision(xrns, options)
 135
 136     def Delete(self, api, xrns, creds, options):
 137         call_id = options.get('call_id')
 138         if Callids().already_handled(call_id): return True
 139         return self.driver.delete(xrns, options)
 140
 141     def Renew(self, api, xrns, creds, expiration_time, options):
 142         call_id = options.get('call_id')
 143         if Callids().already_handled(call_id): return True
 144         return self.driver.renew(xrns, expiration_time, options)
 145
 146     def PerformOperationalAction(self, api, xrns, creds, action, options={}):
 147         call_id = options.get('call_id')
 148         if Callids().already_handled(call_id): return True
 149         return self.driver.perform_operational_action(xrns, action, options)
 150
 151     def Shutdown(self, api, xrn, creds, options={}):
 152         call_id = options.get('call_id')
 153         if Callids().already_handled(call_id): return True
 154         return self.driver.shutdown(xrn, options)
 155