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 def _call_id_supported(api, server):
  41     """
  42     Returns true if server support the optional call_id arg, false otherwise.
  43     """
  44     server_version = api.get_cached_server_version(server)
  45
  46     if 'sfa' in server_version:
  47         code_tag = server_version['code_tag']
  48         code_tag_parts = code_tag.split("-")
  49
  50         version_parts = code_tag_parts[0].split(".")
  51         major, minor = version_parts[0:2]
  52         rev = code_tag_parts[1]
  53         if int(major) > 1:
  54             if int(minor) > 0 or int(rev) > 20:
  55                 return True
  56     return False
  57
  58 # we have specialized xmlrpclib.ServerProxy to remember the input url
  59 # OTOH it's not clear if we're only dealing with XMLRPCServerProxy instances
  60 def get_serverproxy_url (server):
  61     try:
  62         return server.get_url()
  63     except:
  64         logger.warning("GetVersion, falling back to xmlrpclib.ServerProxy internals")
  65         return server._ServerProxy__host + server._ServerProxy__handler
  66
  67 def GetVersion(api):
  68     # peers explicitly in aggregates.xml
  69     peers =dict ([ (peername,get_serverproxy_url(v)) for (peername,v) in api.aggregates.iteritems()
  70                    if peername != api.hrn])
  71     version_manager = VersionManager()
  72     ad_rspec_versions = []
  73     request_rspec_versions = []
  74     for rspec_version in version_manager.versions:
  75         if rspec_version.content_type in ['*', 'ad']:
  76             ad_rspec_versions.append(rspec_version.to_dict())
  77         if rspec_version.content_type in ['*', 'request']:
  78             request_rspec_versions.append(rspec_version.to_dict())
  79     default_rspec_version = version_manager.get_version("sfa 1").to_dict()
  80     xrn=Xrn(api.hrn, 'authority+sa')
  81     version_more = {'interface':'slicemgr',
  82                     'hrn' : xrn.get_hrn(),
  83                     'urn' : xrn.get_urn(),
  84                     'peers': peers,
  85                     'request_rspec_versions': request_rspec_versions,
  86                     'ad_rspec_versions': ad_rspec_versions,
  87                     'default_ad_rspec': default_rspec_version
  88                     }
  89     sm_version=version_core(version_more)
  90     # local aggregate if present needs to have localhost resolved
  91     if api.hrn in api.aggregates:
  92         local_am_url=get_serverproxy_url(api.aggregates[api.hrn])
  93         sm_version['peers'][api.hrn]=local_am_url.replace('localhost',sm_version['hostname'])
  94     return sm_version
  95
  96
  97 #def GetVersion(api):
  98     ## peers explicitly in aggregates.xml
  99     #peers =dict ([ (peername,get_serverproxy_url(v)) for (peername,v) in api.aggregates.iteritems()
 100                    #if peername != api.hrn])
 101     #xrn=Xrn (api.hrn)
 102     #request_rspec_versions = [dict(pg_rspec_request_version), dict(sfa_rspec_version)]
 103     #ad_rspec_versions = [dict(pg_rspec_ad_version), dict(sfa_rspec_version)]
 104     #version_more = {'interface':'slicemgr',
 105                     #'hrn' : xrn.get_hrn(),
 106                     #'urn' : xrn.get_urn(),
 107                     #'peers': peers,
 108                     #'request_rspec_versions': request_rspec_versions,
 109                     #'ad_rspec_versions': ad_rspec_versions,
 110                     #'default_ad_rspec': dict(sfa_rspec_version)
 111                     #}
 112     #sm_version=version_core(version_more)
 113     ## local aggregate if present needs to have localhost resolved
 114     #if api.hrn in api.aggregates:
 115         #local_am_url=get_serverproxy_url(api.aggregates[api.hrn])
 116         #sm_version['peers'][api.hrn]=local_am_url.replace('localhost',sm_version['hostname'])
 117     #return sm_version
 118
 119
 120 def drop_slicemgr_stats(api,rspec):
 121         try:
 122                 stats_elements = rspec.xml.xpath('//statistics')
 123                 for node in stats_elements:
 124                         node.getparent().remove(node)
 125         except Exception, e:
 126                 api.logger.warn("drop_slicemgr_stats failed: %s " % (str(e)))
 127
 128
 129
 130
 131 def CreateSliver(api, xrn, creds, rspec_str, users, call_id):
 132
 133         version_manager = VersionManager()
 134         def _CreateSliver(aggregate, server, xrn, credential, rspec, users, call_id):
 135
 136                 tStart = time.time()
 137                 try:
 138                         # Need to call GetVersion at an aggregate to determine the supported
 139                         # rspec type/format beofre calling CreateSliver at an Aggregate.
 140                         print>>sys.stderr, " \r\n SLICE MANAGERSLAB _CreateSliver server "
 141                         server_version = api.get_cached_server_version(server)
 142                         requested_users = users
 143                         if 'sfa' not in server_version and 'geni_api' in server_version:
 144                                 # sfa aggregtes support both sfa and pg rspecs, no need to convert
 145                                 # if aggregate supports sfa rspecs. otherwise convert to pg rspec
 146                                 rspec = RSpec(RSpecConverter.to_pg_rspec(rspec, 'request'))
 147                                 filter = {'component_manager_id': server_version['urn']}
 148                                 rspec.filter(filter)
 149                                 rspec = rspec.toxml()
 150                                 requested_users = sfa_to_pg_users_arg(users)
 151                         args = [xrn, credential, rspec, requested_users]
 152                         if _call_id_supported(api, server):
 153                                 args.append(call_id)
 154                         rspec = server.CreateSliver(*args)
 155                         return {"aggregate": aggregate, "rspec": rspec, "elapsed": time.time()-tStart, "status": "success"}
 156                 except:
 157                         logger.log_exc('Something wrong in _CreateSliver with URL %s'%server.url)
 158                 return {"aggregate": aggregate, "elapsed": time.time()-tStart, "status": "exception"}
 159
 160
 161         if Callids().already_handled(call_id): return ""
 162
 163         # Validate the RSpec against PlanetLab's schema --disabled for now
 164         # The schema used here needs to aggregate the PL and VINI schemas
 165         # schema = "/var/www/html/schemas/pl.rng"
 166         rspec = RSpec(rspec_str)
 167         schema = None
 168         if schema:
 169                 rspec.validate(schema)
 170
 171         print>>sys.stderr, " \r\n \r\n \t\t =======SLICE MANAGER _CreateSliver api %s" %(api)
 172         # if there is a <statistics> section, the aggregates don't care about it,
 173         # so delete it.
 174         drop_slicemgr_stats(api,rspec)
 175
 176         # attempt to use delegated credential first
 177         credential = api.getDelegatedCredential(creds)
 178         if not credential:
 179                 credential = api.getCredential()
 180
 181         # get the callers hrn
 182         hrn, type = urn_to_hrn(xrn)
 183         valid_cred = api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
 184         caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 185         threads = ThreadManager()
 186         print>>sys.stderr, " \r\n \r\n \t\t =======SLICE MANAGER _CreateSliver api aggregates  %s \t caller_hrn %s api.hrn %s" %(api.aggregates, caller_hrn, api.hrn)
 187         for aggregate in api.aggregates:
 188         # prevent infinite loop. Dont send request back to caller
 189         # unless the caller is the aggregate's SM
 190                 if caller_hrn == aggregate and aggregate != api.hrn:
 191                         continue
 192                 interface = api.aggregates[aggregate]
 193                 print>>sys.stderr, " \r\n \r\n \t\t =======SLICE MANAGER _CreateSliver aggregate %s interface %s" %(api.aggregates[aggregate],interface)
 194                 server = api.get_server(interface, credential)
 195                 if server is None:
 196                         print>>sys.stderr, " \r\n \r\n \t\t =======SLICE MANAGER _CreateSliver NOSERVERS "
 197                 # Just send entire RSpec to each aggregate
 198                 #threads.run(_CreateSliver, aggregate, xrn, [credential], rspec.toxml(), users, call_id)
 199                 threads.run(_CreateSliver, aggregate, server, xrn, [credential], rspec.toxml(), users, call_id)
 200         results = threads.get_results()
 201         manifest_version = version_manager._get_version(rspec.version.type, rspec.version.version, 'manifest')
 202         result_rspec = RSpec(version=manifest_version)
 203     #rspec = SfaRSpec()
 204         for result in results:
 205                 add_slicemgr_stat(result_rspec, "CreateSliver", result["aggregate"], result["elapsed"], result["status"])
 206                 if result["status"]=="success":
 207                         try:
 208                                 result_rspec.version.merge(result["rspec"])
 209                         except:
 210                                 api.logger.log_exc("SM.CreateSliver: Failed to merge aggregate rspec")
 211         return result_rspec.toxml()
 212         #rspec.merge(result)
 213     #return rspec.toxml()
 214
 215 def RenewSliver(api, xrn, creds, expiration_time, call_id):
 216     if Callids().already_handled(call_id): return True
 217
 218     (hrn, type) = urn_to_hrn(xrn)
 219     # get the callers hrn
 220     valid_cred = api.auth.checkCredentials(creds, 'renewsliver', hrn)[0]
 221     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 222
 223     # attempt to use delegated credential first
 224     credential = api.getDelegatedCredential(creds)
 225     if not credential:
 226         credential = api.getCredential()
 227     threads = ThreadManager()
 228     for aggregate in api.aggregates:
 229         # prevent infinite loop. Dont send request back to caller
 230         # unless the caller is the aggregate's SM
 231         if caller_hrn == aggregate and aggregate != api.hrn:
 232             continue
 233
 234         server = api.aggregates[aggregate]
 235         threads.run(server.RenewSliver, xrn, [credential], expiration_time, call_id)
 236     # 'and' the results
 237     return reduce (lambda x,y: x and y, threads.get_results() , True)
 238
 239 def get_ticket(api, xrn, creds, rspec, users):
 240     slice_hrn, type = urn_to_hrn(xrn)
 241     # get the netspecs contained within the clients rspec
 242     aggregate_rspecs = {}
 243     tree= etree.parse(StringIO(rspec))
 244     elements = tree.findall('./network')
 245     for element in elements:
 246         aggregate_hrn = element.values()[0]
 247         aggregate_rspecs[aggregate_hrn] = rspec
 248
 249     # get the callers hrn
 250     valid_cred = api.auth.checkCredentials(creds, 'getticket', slice_hrn)[0]
 251     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 252
 253     # attempt to use delegated credential first
 254     credential = api.getDelegatedCredential(creds)
 255     if not credential:
 256         credential = api.getCredential()
 257     threads = ThreadManager()
 258     for (aggregate, aggregate_rspec) in aggregate_rspecs.iteritems():
 259         # prevent infinite loop. Dont send request back to caller
 260         # unless the caller is the aggregate's SM
 261         if caller_hrn == aggregate and aggregate != api.hrn:
 262             continue
 263         server = None
 264         if aggregate in api.aggregates:
 265             server = api.aggregates[aggregate]
 266         else:
 267             net_urn = hrn_to_urn(aggregate, 'authority')
 268             # we may have a peer that knows about this aggregate
 269             for agg in api.aggregates:
 270                 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
 271                 if not target_aggs or not 'hrn' in target_aggs[0]:
 272                     continue
 273                 # send the request to this address
 274                 url = target_aggs[0]['url']
 275                 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
 276                 # aggregate found, no need to keep looping
 277                 break
 278         if server is None:
 279             continue
 280         threads.run(server.ParseTicket, xrn, credential, aggregate_rspec, users)
 281
 282     results = threads.get_results()
 283
 284     # gather information from each ticket
 285     rspecs = []
 286     initscripts = []
 287     slivers = []
 288     object_gid = None
 289     for result in results:
 290         agg_ticket = SfaTicket(string=result)
 291         attrs = agg_ticket.get_attributes()
 292         if not object_gid:
 293             object_gid = agg_ticket.get_gid_object()
 294         rspecs.append(agg_ticket.get_rspec())
 295         initscripts.extend(attrs.get('initscripts', []))
 296         slivers.extend(attrs.get('slivers', []))
 297
 298     # merge info
 299     attributes = {'initscripts': initscripts,
 300                  'slivers': slivers}
 301     merged_rspec = merge_rspecs(rspecs)
 302
 303     # create a new ticket
 304     ticket = SfaTicket(subject = slice_hrn)
 305     ticket.set_gid_caller(api.auth.client_gid)
 306     ticket.set_issuer(key=api.key, subject=api.hrn)
 307     ticket.set_gid_object(object_gid)
 308     ticket.set_pubkey(object_gid.get_pubkey())
 309     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 310     ticket.set_attributes(attributes)
 311     ticket.set_rspec(merged_rspec)
 312     ticket.encode()
 313     ticket.sign()
 314     return ticket.save_to_string(save_parents=True)
 315
 316
 317 def DeleteSliver(api, xrn, creds, call_id):
 318     if Callids().already_handled(call_id): return ""
 319     (hrn, type) = urn_to_hrn(xrn)
 320     # get the callers hrn
 321     valid_cred = api.auth.checkCredentials(creds, 'deletesliver', hrn)[0]
 322     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 323
 324     # attempt to use delegated credential first
 325     credential = api.getDelegatedCredential(creds)
 326     if not credential:
 327         credential = api.getCredential()
 328     threads = ThreadManager()
 329     for aggregate in api.aggregates:
 330         # prevent infinite loop. Dont send request back to caller
 331         # unless the caller is the aggregate's SM
 332         if caller_hrn == aggregate and aggregate != api.hrn:
 333             continue
 334         server = api.aggregates[aggregate]
 335         threads.run(server.DeleteSliver, xrn, credential, call_id)
 336     threads.get_results()
 337     return 1
 338
 339 def start_slice(api, xrn, creds):
 340     hrn, type = urn_to_hrn(xrn)
 341
 342     # get the callers hrn
 343     valid_cred = api.auth.checkCredentials(creds, 'startslice', hrn)[0]
 344     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 345
 346     # attempt to use delegated credential first
 347     credential = api.getDelegatedCredential(creds)
 348     if not credential:
 349         credential = api.getCredential()
 350     threads = ThreadManager()
 351     for aggregate in api.aggregates:
 352         # prevent infinite loop. Dont send request back to caller
 353         # unless the caller is the aggregate's SM
 354         if caller_hrn == aggregate and aggregate != api.hrn:
 355             continue
 356         server = api.aggregates[aggregate]
 357         threads.run(server.Start, xrn, credential)
 358     threads.get_results()
 359     return 1
 360
 361 def stop_slice(api, xrn, creds):
 362     hrn, type = urn_to_hrn(xrn)
 363
 364     # get the callers hrn
 365     valid_cred = api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
 366     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 367
 368     # attempt to use delegated credential first
 369     credential = api.getDelegatedCredential(creds)
 370     if not credential:
 371         credential = api.getCredential()
 372     threads = ThreadManager()
 373     for aggregate in api.aggregates:
 374         # prevent infinite loop. Dont send request back to caller
 375         # unless the caller is the aggregate's SM
 376         if caller_hrn == aggregate and aggregate != api.hrn:
 377             continue
 378         server = api.aggregates[aggregate]
 379         threads.run(server.Stop, xrn, credential)
 380     threads.get_results()
 381     return 1
 382
 383 def reset_slice(api, xrn):
 384     """
 385     Not implemented
 386     """
 387     return 1
 388
 389 def shutdown(api, xrn, creds):
 390     """
 391     Not implemented
 392     """
 393     return 1
 394
 395 def status(api, xrn, creds):
 396     """
 397     Not implemented
 398     """
 399     return 1
 400
 401 # Thierry : caching at the slicemgr level makes sense to some extent
 402 #caching=True
 403 caching=False
 404 def ListSlices(api, creds, call_id):
 405
 406     if Callids().already_handled(call_id): return []
 407
 408     # look in cache first
 409     if caching and api.cache:
 410         slices = api.cache.get('slices')
 411         if slices:
 412             return slices
 413
 414     # get the callers hrn
 415     valid_cred = api.auth.checkCredentials(creds, 'listslices', None)[0]
 416     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 417
 418     # attempt to use delegated credential first
 419     credential = api.getDelegatedCredential(creds)
 420     if not credential:
 421         credential = api.getCredential()
 422     threads = ThreadManager()
 423     # fetch from aggregates
 424     for aggregate in api.aggregates:
 425         # prevent infinite loop. Dont send request back to caller
 426         # unless the caller is the aggregate's SM
 427         if caller_hrn == aggregate and aggregate != api.hrn:
 428             continue
 429         server = api.aggregates[aggregate]
 430         threads.run(server.ListSlices, credential, call_id)
 431
 432     # combime results
 433     results = threads.get_results()
 434     slices = []
 435     for result in results:
 436         slices.extend(result)
 437
 438     # cache the result
 439     if caching and api.cache:
 440         api.cache.add('slices', slices)
 441
 442     return slices
 443
 444 def add_slicemgr_stat(rspec, callname, aggname, elapsed, status):
 445         try:
 446                 stats_tags = rspec.xml.xpath('//statistics[@call="%s"]' % callname)
 447                 if stats_tags:
 448                         stats_tag = stats_tags[0]
 449                 else:
 450                         stats_tag = etree.SubElement(rspec.xml.root, "statistics", call=callname)
 451
 452                 etree.SubElement(stats_tag, "aggregate", name=str(aggname), elapsed=str(elapsed), status=str(status))
 453         except Exception, e:
 454                 api.logger.warn("add_slicemgr_stat failed on  %s: %s" %(aggname, str(e)))
 455
 456
 457
 458
 459 def ListResources(api, creds, options, call_id):
 460     version_manager = VersionManager()
 461     def _ListResources(aggregate, server, credential, opts, call_id):
 462
 463         my_opts = copy(opts)
 464         args = [credential, my_opts]
 465         tStart = time.time()
 466         try:
 467             if _call_id_supported(api, server):
 468                 args.append(call_id)
 469             version = api.get_cached_server_version(server)
 470             # force ProtoGENI aggregates to give us a v2 RSpec
 471             if 'sfa' not in version.keys():
 472                 my_opts['rspec_version'] = version_manager.get_version('ProtoGENI 2').to_dict()
 473             rspec = server.ListResources(*args)
 474             return {"aggregate": aggregate, "rspec": rspec, "elapsed": time.time()-tStart, "status": "success"}
 475         except Exception, e:
 476             api.logger.log_exc("ListResources failed at %s" %(server.url))
 477             return {"aggregate": aggregate, "elapsed": time.time()-tStart, "status": "exception"}
 478
 479     if Callids().already_handled(call_id): return ""
 480
 481     # get slice's hrn from options
 482     xrn = options.get('geni_slice_urn', '')
 483     (hrn, type) = urn_to_hrn(xrn)
 484     if 'geni_compressed' in options:
 485         del(options['geni_compressed'])
 486
 487     # get the rspec's return format from options
 488     rspec_version = version_manager.get_version(options.get('rspec_version'))
 489     version_string = "rspec_%s" % (rspec_version.to_string())
 490
 491     # look in cache first
 492     if caching and api.cache and not xrn:
 493         rspec =  api.cache.get(version_string)
 494         if rspec:
 495             return rspec
 496
 497     # get the callers hrn
 498     valid_cred = api.auth.checkCredentials(creds, 'listnodes', hrn)[0]
 499     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 500
 501     # attempt to use delegated credential first
 502     cred = api.getDelegatedCredential(creds)
 503     if not cred:
 504         cred = api.getCredential()
 505     threads = ThreadManager()
 506     for aggregate in api.aggregates:
 507         # prevent infinite loop. Dont send request back to caller
 508         # unless the caller is the aggregate's SM
 509         if caller_hrn == aggregate and aggregate != api.hrn:
 510             continue
 511
 512         # get the rspec from the aggregate
 513         interface = api.aggregates[aggregate]
 514         server = api.get_server(interface, cred)
 515         threads.run(_ListResources, aggregate, server, [cred], options, call_id)
 516
 517
 518     results = threads.get_results()
 519     rspec_version = version_manager.get_version(options.get('rspec_version'))
 520     if xrn:
 521         result_version = version_manager._get_version(rspec_version.type, rspec_version.version, 'manifest')
 522     else:
 523         result_version = version_manager._get_version(rspec_version.type, rspec_version.version, 'ad')
 524     rspec = RSpec(version=result_version)
 525     for result in results:
 526         add_slicemgr_stat(rspec, "ListResources", result["aggregate"], result["elapsed"], result["status"])
 527         if result["status"]=="success":
 528             try:
 529                 rspec.version.merge(result["rspec"])
 530             except:
 531                 api.logger.log_exc("SM.ListResources: Failed to merge aggregate rspec")
 532
 533     # cache the result
 534     if caching and api.cache and not xrn:
 535         api.cache.add(version_string, rspec.toxml())
 536
 537     print >>sys.stderr, "\r\n  slice_manager  \r\n"   , rspec
 538     return rspec.toxml()
 539
 540 #def ListResources(api, creds, options, call_id):
 541
 542     #if Callids().already_handled(call_id): return ""
 543
 544     ## get slice's hrn from options
 545     #xrn = options.get('geni_slice_urn', '')
 546     #(hrn, type) = urn_to_hrn(xrn)
 547     #print >>sys.stderr, " SM_ListResources xrn " , xrn
 548     ##print >>sys.stderr, " SM ListResources api.__dict__ " , api.__dict__.keys()
 549     ##print >>sys.stderr, " SM ListResources dir(api)" , dir(api)
 550     #print >>sys.stderr, "  \r\n avant RspecVersion \r\n \r\n"
 551     ## get the rspec's return format from options
 552     #rspec_version = RSpecVersion(options.get('rspec_version'))
 553     #print >>sys.stderr, " \r\n \r\n ListResources RSpecVersion ", rspec_version
 554     #version_string = "rspec_%s" % (rspec_version.get_version_name())
 555
 556     ##panos adding the info option to the caching key (can be improved)
 557     #if options.get('info'):
 558         #version_string = version_string + "_"+options.get('info')
 559
 560     #print>>sys.stderr,"version string = ",version_string
 561
 562     ## look in cache first
 563     #if caching and api.cache and not xrn:
 564         #print>>sys.stderr," \r\n  caching %s and api.cache %s and not xrn %s"%(caching , api.cache,xrn)
 565         #rspec =  api.cache.get(version_string)
 566         #if rspec:
 567             #return rspec
 568
 569     ## get the callers hrn
 570     #print >>sys.stderr, " SM ListResources get the callers hrn "
 571     #valid_cred = api.auth.checkCredentials(creds, 'listnodes', hrn)[0]
 572     #caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 573     #print >>sys.stderr, " \r\n SM ListResources get the callers caller_hrn hrn  %s "%(caller_hrn)
 574     ## attempt to use delegated credential first
 575     #credential = api.getDelegatedCredential(creds)
 576     #print >>sys.stderr, " \r\n SM ListResources get the callers credential  %s "%(credential)
 577     #if not credential:
 578         #credential = api.getCredential()
 579     #threads = ThreadManager()
 580     #print >>sys.stderr, " \r\n SM ListResources get the callers api.aggregates  %s "%(api.aggregates)
 581     #for aggregate in api.aggregates:
 582         ## prevent infinite loop. Dont send request back to caller
 583         ## unless the caller is the aggregate's SM
 584         #if caller_hrn == aggregate and aggregate != api.hrn:
 585             #continue
 586         ## get the rspec from the aggregate
 587         #server = api.aggregates[aggregate]
 588         #print >>sys.stderr, " Slice Mgr ListResources, server" ,server
 589         #my_opts = copy(options)
 590         #my_opts['geni_compressed'] = False
 591         #threads.run(server.ListResources, credential, my_opts, call_id)
 592         #print >>sys.stderr, "\r\n  !!!!!!!!!!!!!!!! \r\n"
 593     #results = threads.get_results()
 594     ##results.append(open('/root/protogeni.rspec', 'r').read())
 595     #rspec_version = RSpecVersion(my_opts.get('rspec_version'))
 596     #if rspec_version['type'].lower() == 'protogeni':
 597         #rspec = PGRSpec()
 598     #else:
 599         #rspec = SfaRSpec()
 600
 601     #for result in results:
 602         #print >>sys.stderr, "\r\n  slice_manager  result"   , result
 603         #try:
 604             #print >>sys.stderr, "avant merge"  , rspec
 605             #rspec.merge(result)
 606             #print >>sys.stderr, "AFTERMERGE" , rspec
 607         #except:
 608             #raise
 609             #api.logger.info("SM.ListResources: Failed to merge aggregate rspec")
 610
 611     ## cache the result
 612     #if caching and api.cache and not xrn:
 613         #api.cache.add(version_string, rspec.toxml())
 614
 615     #print >>sys.stderr, "\r\n  slice_manager  \r\n"   , rspec
 616     #return rspec.toxml()
 617
 618 # first draft at a merging SliverStatus
 619 def SliverStatus(api, slice_xrn, creds, call_id):
 620     if Callids().already_handled(call_id): return {}
 621     # attempt to use delegated credential first
 622     credential = api.getDelegatedCredential(creds)
 623     if not credential:
 624         credential = api.getCredential()
 625     threads = ThreadManager()
 626     for aggregate in api.aggregates:
 627         server = api.aggregates[aggregate]
 628         threads.run (server.SliverStatus, slice_xrn, credential, call_id)
 629     results = threads.get_results()
 630
 631     # get rid of any void result - e.g. when call_id was hit where by convention we return {}
 632     results = [ result for result in results if result and result['geni_resources']]
 633
 634     # do not try to combine if there's no result
 635     if not results : return {}
 636
 637     # otherwise let's merge stuff
 638     overall = {}
 639
 640     # mmh, it is expected that all results carry the same urn
 641     overall['geni_urn'] = results[0]['geni_urn']
 642
 643     # consolidate geni_status - simple model using max on a total order
 644     states = [ 'ready', 'configuring', 'failed', 'unknown' ]
 645     # hash name to index
 646     shash = dict ( zip ( states, range(len(states)) ) )
 647     def combine_status (x,y):
 648         return shash [ max (shash(x),shash(y)) ]
 649     overall['geni_status'] = reduce (combine_status, [ result['geni_status'] for result in results], 'ready' )
 650
 651     # {'ready':0,'configuring':1,'failed':2,'unknown':3}
 652     # append all geni_resources
 653     overall['geni_resources'] = \
 654         reduce (lambda x,y: x+y, [ result['geni_resources'] for result in results] , [])
 655
 656     return overall
 657
 658 def main():
 659     r = RSpec()
 660     r.parseFile(sys.argv[1])
 661     rspec = r.toDict()
 662     CreateSliver(None,'plc.princeton.tmacktestslice',rspec,'create-slice-tmacktestslice')
 663
 664 if __name__ == "__main__":
 665     main()
 666