sfa/managers/slice_manager_slab.py

   1 #
   2 import sys
   3 import time,datetime
   4 from StringIO import StringIO
   5 from types import StringTypes
   6 from copy import deepcopy
   7 from copy import copy
   8 from lxml import etree
   9
  10 from sfa.util.sfalogging import logger
  11 #from sfa.util.sfalogging import sfa_logger
  12 from sfa.util.rspecHelper import merge_rspecs
  13 from sfa.util.xrn import Xrn, urn_to_hrn, hrn_to_urn
  14 from sfa.util.plxrn import hrn_to_pl_slicename
  15 from sfa.util.rspec import *
  16 from sfa.util.specdict import *
  17 from sfa.util.faults import *
  18 from sfa.util.record import SfaRecord
  19 #from sfa.rspecs.pg_rspec import PGRSpec
  20 #from sfa.rspecs.sfa_rspec import SfaRSpec
  21 from sfa.rspecs.rspec_converter import RSpecConverter
  22 #from sfa.rspecs.rspec_parser import parse_rspec
  23 #from sfa.rspecs.rspec_version import RSpecVersion
  24 #from sfa.rspecs.sfa_rspec import sfa_rspec_version
  25 #from sfa.rspecs.pg_rspec import pg_rspec_ad_version, pg_rspec_request_version
  26 from sfa.client.client_helper import sfa_to_pg_users_arg
  27 from sfa.rspecs.version_manager import VersionManager
  28
  29 from sfa.rspecs.rspec import RSpec
  30 from sfa.util.policy import Policy
  31 from sfa.util.prefixTree import prefixTree
  32 from sfa.util.sfaticket import *
  33 from sfa.trust.credential import Credential
  34 from sfa.util.threadmanager import ThreadManager
  35 import sfa.util.xmlrpcprotocol as xmlrpcprotocol
  36 import sfa.plc.peers as peers
  37 from sfa.util.version import version_core
  38 from sfa.util.callids import Callids
  39
  40 # we have specialized xmlrpclib.ServerProxy to remember the input url
  41 # OTOH it's not clear if we're only dealing with XMLRPCServerProxy instances
  42 def get_serverproxy_url (server):
  43     try:
  44         return server.get_url()
  45     except:
  46         logger.warning("GetVersion, falling back to xmlrpclib.ServerProxy internals")
  47         return server._ServerProxy__host + server._ServerProxy__handler
  48
  49 def GetVersion(api):
  50     # peers explicitly in aggregates.xml
  51     peers =dict ([ (peername,get_serverproxy_url(v)) for (peername,v) in api.aggregates.iteritems()
  52                    if peername != api.hrn])
  53     version_manager = VersionManager()
  54     ad_rspec_versions = []
  55     request_rspec_versions = []
  56     for rspec_version in version_manager.versions:
  57         if rspec_version.content_type in ['*', 'ad']:
  58             ad_rspec_versions.append(rspec_version.to_dict())
  59         if rspec_version.content_type in ['*', 'request']:
  60             request_rspec_versions.append(rspec_version.to_dict())
  61     default_rspec_version = version_manager.get_version("sfa 1").to_dict()
  62     xrn=Xrn(api.hrn, 'authority+sa')
  63     version_more = {'interface':'slicemgr',
  64                     'hrn' : xrn.get_hrn(),
  65                     'urn' : xrn.get_urn(),
  66                     'peers': peers,
  67                     'request_rspec_versions': request_rspec_versions,
  68                     'ad_rspec_versions': ad_rspec_versions,
  69                     'default_ad_rspec': default_rspec_version
  70                     }
  71     sm_version=version_core(version_more)
  72     # local aggregate if present needs to have localhost resolved
  73     if api.hrn in api.aggregates:
  74         local_am_url=get_serverproxy_url(api.aggregates[api.hrn])
  75         sm_version['peers'][api.hrn]=local_am_url.replace('localhost',sm_version['hostname'])
  76     return sm_version
  77
  78
  79 #def GetVersion(api):
  80     ## peers explicitly in aggregates.xml
  81     #peers =dict ([ (peername,get_serverproxy_url(v)) for (peername,v) in api.aggregates.iteritems()
  82                    #if peername != api.hrn])
  83     #xrn=Xrn (api.hrn)
  84     #request_rspec_versions = [dict(pg_rspec_request_version), dict(sfa_rspec_version)]
  85     #ad_rspec_versions = [dict(pg_rspec_ad_version), dict(sfa_rspec_version)]
  86     #version_more = {'interface':'slicemgr',
  87                     #'hrn' : xrn.get_hrn(),
  88                     #'urn' : xrn.get_urn(),
  89                     #'peers': peers,
  90                     #'request_rspec_versions': request_rspec_versions,
  91                     #'ad_rspec_versions': ad_rspec_versions,
  92                     #'default_ad_rspec': dict(sfa_rspec_version)
  93                     #}
  94     #sm_version=version_core(version_more)
  95     ## local aggregate if present needs to have localhost resolved
  96     #if api.hrn in api.aggregates:
  97         #local_am_url=get_serverproxy_url(api.aggregates[api.hrn])
  98         #sm_version['peers'][api.hrn]=local_am_url.replace('localhost',sm_version['hostname'])
  99     #return sm_version
 100
 101
 102 def drop_slicemgr_stats(api,rspec):
 103         try:
 104                 stats_elements = rspec.xml.xpath('//statistics')
 105                 for node in stats_elements:
 106                         node.getparent().remove(node)
 107         except Exception, e:
 108                 api.logger.warn("drop_slicemgr_stats failed: %s " % (str(e)))
 109
 110
 111
 112
 113 def CreateSliver(api, xrn, creds, rspec_str, users, call_id):
 114         version_manager = VersionManager()
 115         def _CreateSliver(aggregate, xrn, credential, rspec, users, call_id):
 116         # Need to call ParseVersion at an aggregate to determine the supported
 117         # rspec type/format beofre calling CreateSliver at an Aggregate.
 118         # The Aggregate's verion info is cached
 119
 120                 tStart = time.time()
 121                 try:
 122                         # Need to call GetVersion at an aggregate to determine the supported
 123                         # rspec type/format beofre calling CreateSliver at an Aggregate.
 124                         server_version = api.get_cached_server_version(server)
 125                         requested_users = users
 126                         if 'sfa' not in server_version and 'geni_api' in server_version:
 127                                 # sfa aggregtes support both sfa and pg rspecs, no need to convert
 128                                 # if aggregate supports sfa rspecs. otherwise convert to pg rspec
 129                                 rspec = RSpec(RSpecConverter.to_pg_rspec(rspec, 'request'))
 130                                 filter = {'component_manager_id': server_version['urn']}
 131                                 rspec.filter(filter)
 132                                 rspec = rspec.toxml()
 133                                 requested_users = sfa_to_pg_users_arg(users)
 134                         args = [xrn, credential, rspec, requested_users]
 135                         if _call_id_supported(api, server):
 136                                 args.append(call_id)
 137                         rspec = server.CreateSliver(*args)
 138                         return {"aggregate": aggregate, "rspec": rspec, "elapsed": time.time()-tStart, "status": "success"}
 139                 except:
 140                         logger.log_exc('Something wrong in _CreateSliver with URL %s'%server.url)
 141                 return {"aggregate": aggregate, "elapsed": time.time()-tStart, "status": "exception"}
 142
 143
 144         if Callids().already_handled(call_id): return ""
 145
 146         # Validate the RSpec against PlanetLab's schema --disabled for now
 147         # The schema used here needs to aggregate the PL and VINI schemas
 148         # schema = "/var/www/html/schemas/pl.rng"
 149         rspec = RSpec(rspec_str)
 150         schema = None
 151         if schema:
 152                 rspec.validate(schema)
 153
 154         print>>sys.stderr, " \r\n \r\n \t\t =======SLICE MANAGER _CreateSliver api %s" %(api)
 155         # if there is a <statistics> section, the aggregates don't care about it,
 156         # so delete it.
 157         drop_slicemgr_stats(api,rspec)
 158
 159         # attempt to use delegated credential first
 160         credential = api.getDelegatedCredential(creds)
 161         if not credential:
 162                 credential = api.getCredential()
 163
 164         # get the callers hrn
 165         hrn, type = urn_to_hrn(xrn)
 166         valid_cred = api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
 167         caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 168         threads = ThreadManager()
 169
 170         for aggregate in api.aggregates:
 171         # prevent infinite loop. Dont send request back to caller
 172         # unless the caller is the aggregate's SM
 173                 if caller_hrn == aggregate and aggregate != api.hrn:
 174                         continue
 175                 interface = api.aggregates[aggregate]
 176                 server = api.get_server(interface, credential)
 177                 # Just send entire RSpec to each aggregate
 178                 threads.run(_CreateSliver, aggregate, xrn, [credential], rspec.toxml(), users, call_id)
 179
 180         results = threads.get_results()
 181         manifest_version = version_manager._get_version(rspec.version.type, rspec.version.version, 'manifest')
 182         result_rspec = RSpec(version=manifest_version)
 183     #rspec = SfaRSpec()
 184         for result in results:
 185                 add_slicemgr_stat(result_rspec, "CreateSliver", result["aggregate"], result["elapsed"], result["status"])
 186                 if result["status"]=="success":
 187                         try:
 188                                 result_rspec.version.merge(result["rspec"])
 189                         except:
 190                                 api.logger.log_exc("SM.CreateSliver: Failed to merge aggregate rspec")
 191         return result_rspec.toxml()
 192         #rspec.merge(result)
 193     #return rspec.toxml()
 194
 195 def RenewSliver(api, xrn, creds, expiration_time, call_id):
 196     if Callids().already_handled(call_id): return True
 197
 198     (hrn, type) = urn_to_hrn(xrn)
 199     # get the callers hrn
 200     valid_cred = api.auth.checkCredentials(creds, 'renewsliver', hrn)[0]
 201     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 202
 203     # attempt to use delegated credential first
 204     credential = api.getDelegatedCredential(creds)
 205     if not credential:
 206         credential = api.getCredential()
 207     threads = ThreadManager()
 208     for aggregate in api.aggregates:
 209         # prevent infinite loop. Dont send request back to caller
 210         # unless the caller is the aggregate's SM
 211         if caller_hrn == aggregate and aggregate != api.hrn:
 212             continue
 213
 214         server = api.aggregates[aggregate]
 215         threads.run(server.RenewSliver, xrn, [credential], expiration_time, call_id)
 216     # 'and' the results
 217     return reduce (lambda x,y: x and y, threads.get_results() , True)
 218
 219 def get_ticket(api, xrn, creds, rspec, users):
 220     slice_hrn, type = urn_to_hrn(xrn)
 221     # get the netspecs contained within the clients rspec
 222     aggregate_rspecs = {}
 223     tree= etree.parse(StringIO(rspec))
 224     elements = tree.findall('./network')
 225     for element in elements:
 226         aggregate_hrn = element.values()[0]
 227         aggregate_rspecs[aggregate_hrn] = rspec
 228
 229     # get the callers hrn
 230     valid_cred = api.auth.checkCredentials(creds, 'getticket', slice_hrn)[0]
 231     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 232
 233     # attempt to use delegated credential first
 234     credential = api.getDelegatedCredential(creds)
 235     if not credential:
 236         credential = api.getCredential()
 237     threads = ThreadManager()
 238     for (aggregate, aggregate_rspec) in aggregate_rspecs.iteritems():
 239         # prevent infinite loop. Dont send request back to caller
 240         # unless the caller is the aggregate's SM
 241         if caller_hrn == aggregate and aggregate != api.hrn:
 242             continue
 243         server = None
 244         if aggregate in api.aggregates:
 245             server = api.aggregates[aggregate]
 246         else:
 247             net_urn = hrn_to_urn(aggregate, 'authority')
 248             # we may have a peer that knows about this aggregate
 249             for agg in api.aggregates:
 250                 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
 251                 if not target_aggs or not 'hrn' in target_aggs[0]:
 252                     continue
 253                 # send the request to this address
 254                 url = target_aggs[0]['url']
 255                 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
 256                 # aggregate found, no need to keep looping
 257                 break
 258         if server is None:
 259             continue
 260         threads.run(server.ParseTicket, xrn, credential, aggregate_rspec, users)
 261
 262     results = threads.get_results()
 263
 264     # gather information from each ticket
 265     rspecs = []
 266     initscripts = []
 267     slivers = []
 268     object_gid = None
 269     for result in results:
 270         agg_ticket = SfaTicket(string=result)
 271         attrs = agg_ticket.get_attributes()
 272         if not object_gid:
 273             object_gid = agg_ticket.get_gid_object()
 274         rspecs.append(agg_ticket.get_rspec())
 275         initscripts.extend(attrs.get('initscripts', []))
 276         slivers.extend(attrs.get('slivers', []))
 277
 278     # merge info
 279     attributes = {'initscripts': initscripts,
 280                  'slivers': slivers}
 281     merged_rspec = merge_rspecs(rspecs)
 282
 283     # create a new ticket
 284     ticket = SfaTicket(subject = slice_hrn)
 285     ticket.set_gid_caller(api.auth.client_gid)
 286     ticket.set_issuer(key=api.key, subject=api.hrn)
 287     ticket.set_gid_object(object_gid)
 288     ticket.set_pubkey(object_gid.get_pubkey())
 289     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 290     ticket.set_attributes(attributes)
 291     ticket.set_rspec(merged_rspec)
 292     ticket.encode()
 293     ticket.sign()
 294     return ticket.save_to_string(save_parents=True)
 295
 296
 297 def DeleteSliver(api, xrn, creds, call_id):
 298     if Callids().already_handled(call_id): return ""
 299     (hrn, type) = urn_to_hrn(xrn)
 300     # get the callers hrn
 301     valid_cred = api.auth.checkCredentials(creds, 'deletesliver', hrn)[0]
 302     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 303
 304     # attempt to use delegated credential first
 305     credential = api.getDelegatedCredential(creds)
 306     if not credential:
 307         credential = api.getCredential()
 308     threads = ThreadManager()
 309     for aggregate in api.aggregates:
 310         # prevent infinite loop. Dont send request back to caller
 311         # unless the caller is the aggregate's SM
 312         if caller_hrn == aggregate and aggregate != api.hrn:
 313             continue
 314         server = api.aggregates[aggregate]
 315         threads.run(server.DeleteSliver, xrn, credential, call_id)
 316     threads.get_results()
 317     return 1
 318
 319 def start_slice(api, xrn, creds):
 320     hrn, type = urn_to_hrn(xrn)
 321
 322     # get the callers hrn
 323     valid_cred = api.auth.checkCredentials(creds, 'startslice', hrn)[0]
 324     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 325
 326     # attempt to use delegated credential first
 327     credential = api.getDelegatedCredential(creds)
 328     if not credential:
 329         credential = api.getCredential()
 330     threads = ThreadManager()
 331     for aggregate in api.aggregates:
 332         # prevent infinite loop. Dont send request back to caller
 333         # unless the caller is the aggregate's SM
 334         if caller_hrn == aggregate and aggregate != api.hrn:
 335             continue
 336         server = api.aggregates[aggregate]
 337         threads.run(server.Start, xrn, credential)
 338     threads.get_results()
 339     return 1
 340
 341 def stop_slice(api, xrn, creds):
 342     hrn, type = urn_to_hrn(xrn)
 343
 344     # get the callers hrn
 345     valid_cred = api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
 346     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 347
 348     # attempt to use delegated credential first
 349     credential = api.getDelegatedCredential(creds)
 350     if not credential:
 351         credential = api.getCredential()
 352     threads = ThreadManager()
 353     for aggregate in api.aggregates:
 354         # prevent infinite loop. Dont send request back to caller
 355         # unless the caller is the aggregate's SM
 356         if caller_hrn == aggregate and aggregate != api.hrn:
 357             continue
 358         server = api.aggregates[aggregate]
 359         threads.run(server.Stop, xrn, credential)
 360     threads.get_results()
 361     return 1
 362
 363 def reset_slice(api, xrn):
 364     """
 365     Not implemented
 366     """
 367     return 1
 368
 369 def shutdown(api, xrn, creds):
 370     """
 371     Not implemented
 372     """
 373     return 1
 374
 375 def status(api, xrn, creds):
 376     """
 377     Not implemented
 378     """
 379     return 1
 380
 381 # Thierry : caching at the slicemgr level makes sense to some extent
 382 #caching=True
 383 caching=False
 384 def ListSlices(api, creds, call_id):
 385
 386     if Callids().already_handled(call_id): return []
 387
 388     # look in cache first
 389     if caching and api.cache:
 390         slices = api.cache.get('slices')
 391         if slices:
 392             return slices
 393
 394     # get the callers hrn
 395     valid_cred = api.auth.checkCredentials(creds, 'listslices', None)[0]
 396     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 397
 398     # attempt to use delegated credential first
 399     credential = api.getDelegatedCredential(creds)
 400     if not credential:
 401         credential = api.getCredential()
 402     threads = ThreadManager()
 403     # fetch from aggregates
 404     for aggregate in api.aggregates:
 405         # prevent infinite loop. Dont send request back to caller
 406         # unless the caller is the aggregate's SM
 407         if caller_hrn == aggregate and aggregate != api.hrn:
 408             continue
 409         server = api.aggregates[aggregate]
 410         threads.run(server.ListSlices, credential, call_id)
 411
 412     # combime results
 413     results = threads.get_results()
 414     slices = []
 415     for result in results:
 416         slices.extend(result)
 417
 418     # cache the result
 419     if caching and api.cache:
 420         api.cache.add('slices', slices)
 421
 422     return slices
 423
 424 def add_slicemgr_stat(rspec, callname, aggname, elapsed, status):
 425         try:
 426                 stats_tags = rspec.xml.xpath('//statistics[@call="%s"]' % callname)
 427                 if stats_tags:
 428                         stats_tag = stats_tags[0]
 429                 else:
 430                         stats_tag = etree.SubElement(rspec.xml.root, "statistics", call=callname)
 431
 432                 etree.SubElement(stats_tag, "aggregate", name=str(aggname), elapsed=str(elapsed), status=str(status))
 433         except Exception, e:
 434                 api.logger.warn("add_slicemgr_stat failed on  %s: %s" %(aggname, str(e)))
 435
 436
 437
 438
 439 def ListResources(api, creds, options, call_id):
 440     version_manager = VersionManager()
 441     def _ListResources(aggregate, server, credential, opts, call_id):
 442
 443         my_opts = copy(opts)
 444         args = [credential, my_opts]
 445         tStart = time.time()
 446         try:
 447             if _call_id_supported(api, server):
 448                 args.append(call_id)
 449             version = api.get_cached_server_version(server)
 450             # force ProtoGENI aggregates to give us a v2 RSpec
 451             if 'sfa' not in version.keys():
 452                 my_opts['rspec_version'] = version_manager.get_version('ProtoGENI 2').to_dict()
 453             rspec = server.ListResources(*args)
 454             return {"aggregate": aggregate, "rspec": rspec, "elapsed": time.time()-tStart, "status": "success"}
 455         except Exception, e:
 456             api.logger.log_exc("ListResources failed at %s" %(server.url))
 457             return {"aggregate": aggregate, "elapsed": time.time()-tStart, "status": "exception"}
 458
 459     if Callids().already_handled(call_id): return ""
 460
 461     # get slice's hrn from options
 462     xrn = options.get('geni_slice_urn', '')
 463     (hrn, type) = urn_to_hrn(xrn)
 464     if 'geni_compressed' in options:
 465         del(options['geni_compressed'])
 466
 467     # get the rspec's return format from options
 468     rspec_version = version_manager.get_version(options.get('rspec_version'))
 469     version_string = "rspec_%s" % (rspec_version.to_string())
 470
 471     # look in cache first
 472     if caching and api.cache and not xrn:
 473         rspec =  api.cache.get(version_string)
 474         if rspec:
 475             return rspec
 476
 477     # get the callers hrn
 478     valid_cred = api.auth.checkCredentials(creds, 'listnodes', hrn)[0]
 479     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 480
 481     # attempt to use delegated credential first
 482     cred = api.getDelegatedCredential(creds)
 483     if not cred:
 484         cred = api.getCredential()
 485     threads = ThreadManager()
 486     for aggregate in api.aggregates:
 487         # prevent infinite loop. Dont send request back to caller
 488         # unless the caller is the aggregate's SM
 489         if caller_hrn == aggregate and aggregate != api.hrn:
 490             continue
 491
 492         # get the rspec from the aggregate
 493         interface = api.aggregates[aggregate]
 494         server = api.get_server(interface, cred)
 495         threads.run(_ListResources, aggregate, server, [cred], options, call_id)
 496
 497
 498     results = threads.get_results()
 499     rspec_version = version_manager.get_version(options.get('rspec_version'))
 500     if xrn:
 501         result_version = version_manager._get_version(rspec_version.type, rspec_version.version, 'manifest')
 502     else:
 503         result_version = version_manager._get_version(rspec_version.type, rspec_version.version, 'ad')
 504     rspec = RSpec(version=result_version)
 505     for result in results:
 506         add_slicemgr_stat(rspec, "ListResources", result["aggregate"], result["elapsed"], result["status"])
 507         if result["status"]=="success":
 508             try:
 509                 rspec.version.merge(result["rspec"])
 510             except:
 511                 api.logger.log_exc("SM.ListResources: Failed to merge aggregate rspec")
 512
 513     # cache the result
 514     if caching and api.cache and not xrn:
 515         api.cache.add(version_string, rspec.toxml())
 516
 517     print >>sys.stderr, "\r\n  slice_manager  \r\n"   , rspec
 518     return rspec.toxml()
 519
 520 #def ListResources(api, creds, options, call_id):
 521
 522     #if Callids().already_handled(call_id): return ""
 523
 524     ## get slice's hrn from options
 525     #xrn = options.get('geni_slice_urn', '')
 526     #(hrn, type) = urn_to_hrn(xrn)
 527     #print >>sys.stderr, " SM_ListResources xrn " , xrn
 528     ##print >>sys.stderr, " SM ListResources api.__dict__ " , api.__dict__.keys()
 529     ##print >>sys.stderr, " SM ListResources dir(api)" , dir(api)
 530     #print >>sys.stderr, "  \r\n avant RspecVersion \r\n \r\n"
 531     ## get the rspec's return format from options
 532     #rspec_version = RSpecVersion(options.get('rspec_version'))
 533     #print >>sys.stderr, " \r\n \r\n ListResources RSpecVersion ", rspec_version
 534     #version_string = "rspec_%s" % (rspec_version.get_version_name())
 535
 536     ##panos adding the info option to the caching key (can be improved)
 537     #if options.get('info'):
 538         #version_string = version_string + "_"+options.get('info')
 539
 540     #print>>sys.stderr,"version string = ",version_string
 541
 542     ## look in cache first
 543     #if caching and api.cache and not xrn:
 544         #print>>sys.stderr," \r\n  caching %s and api.cache %s and not xrn %s"%(caching , api.cache,xrn)
 545         #rspec =  api.cache.get(version_string)
 546         #if rspec:
 547             #return rspec
 548
 549     ## get the callers hrn
 550     #print >>sys.stderr, " SM ListResources get the callers hrn "
 551     #valid_cred = api.auth.checkCredentials(creds, 'listnodes', hrn)[0]
 552     #caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 553     #print >>sys.stderr, " \r\n SM ListResources get the callers caller_hrn hrn  %s "%(caller_hrn)
 554     ## attempt to use delegated credential first
 555     #credential = api.getDelegatedCredential(creds)
 556     #print >>sys.stderr, " \r\n SM ListResources get the callers credential  %s "%(credential)
 557     #if not credential:
 558         #credential = api.getCredential()
 559     #threads = ThreadManager()
 560     #print >>sys.stderr, " \r\n SM ListResources get the callers api.aggregates  %s "%(api.aggregates)
 561     #for aggregate in api.aggregates:
 562         ## prevent infinite loop. Dont send request back to caller
 563         ## unless the caller is the aggregate's SM
 564         #if caller_hrn == aggregate and aggregate != api.hrn:
 565             #continue
 566         ## get the rspec from the aggregate
 567         #server = api.aggregates[aggregate]
 568         #print >>sys.stderr, " Slice Mgr ListResources, server" ,server
 569         #my_opts = copy(options)
 570         #my_opts['geni_compressed'] = False
 571         #threads.run(server.ListResources, credential, my_opts, call_id)
 572         #print >>sys.stderr, "\r\n  !!!!!!!!!!!!!!!! \r\n"
 573     #results = threads.get_results()
 574     ##results.append(open('/root/protogeni.rspec', 'r').read())
 575     #rspec_version = RSpecVersion(my_opts.get('rspec_version'))
 576     #if rspec_version['type'].lower() == 'protogeni':
 577         #rspec = PGRSpec()
 578     #else:
 579         #rspec = SfaRSpec()
 580
 581     #for result in results:
 582         #print >>sys.stderr, "\r\n  slice_manager  result"   , result
 583         #try:
 584             #print >>sys.stderr, "avant merge"  , rspec
 585             #rspec.merge(result)
 586             #print >>sys.stderr, "AFTERMERGE" , rspec
 587         #except:
 588             #raise
 589             #api.logger.info("SM.ListResources: Failed to merge aggregate rspec")
 590
 591     ## cache the result
 592     #if caching and api.cache and not xrn:
 593         #api.cache.add(version_string, rspec.toxml())
 594
 595     #print >>sys.stderr, "\r\n  slice_manager  \r\n"   , rspec
 596     #return rspec.toxml()
 597
 598 # first draft at a merging SliverStatus
 599 def SliverStatus(api, slice_xrn, creds, call_id):
 600     if Callids().already_handled(call_id): return {}
 601     # attempt to use delegated credential first
 602     credential = api.getDelegatedCredential(creds)
 603     if not credential:
 604         credential = api.getCredential()
 605     threads = ThreadManager()
 606     for aggregate in api.aggregates:
 607         server = api.aggregates[aggregate]
 608         threads.run (server.SliverStatus, slice_xrn, credential, call_id)
 609     results = threads.get_results()
 610
 611     # get rid of any void result - e.g. when call_id was hit where by convention we return {}
 612     results = [ result for result in results if result and result['geni_resources']]
 613
 614     # do not try to combine if there's no result
 615     if not results : return {}
 616
 617     # otherwise let's merge stuff
 618     overall = {}
 619
 620     # mmh, it is expected that all results carry the same urn
 621     overall['geni_urn'] = results[0]['geni_urn']
 622
 623     # consolidate geni_status - simple model using max on a total order
 624     states = [ 'ready', 'configuring', 'failed', 'unknown' ]
 625     # hash name to index
 626     shash = dict ( zip ( states, range(len(states)) ) )
 627     def combine_status (x,y):
 628         return shash [ max (shash(x),shash(y)) ]
 629     overall['geni_status'] = reduce (combine_status, [ result['geni_status'] for result in results], 'ready' )
 630
 631     # {'ready':0,'configuring':1,'failed':2,'unknown':3}
 632     # append all geni_resources
 633     overall['geni_resources'] = \
 634         reduce (lambda x,y: x+y, [ result['geni_resources'] for result in results] , [])
 635
 636     return overall
 637
 638 def main():
 639     r = RSpec()
 640     r.parseFile(sys.argv[1])
 641     rspec = r.toDict()
 642     CreateSliver(None,'plc.princeton.tmacktestslice',rspec,'create-slice-tmacktestslice')
 643
 644 if __name__ == "__main__":
 645     main()
 646