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