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                 requested_users = sfa_to_pg_users_arg(users)
 206             args = [xrn, credential, rspec, requested_users]
 207             if _call_id_supported(api, server):
 208                 args.append(call_id)
 209             rspec = server.CreateSliver(*args)
 210             return {"aggregate": aggregate, "rspec": rspec, "elapsed": time.time()-tStart, "status": "success"}
 211         except:
 212             logger.log_exc('Something wrong in _CreateSliver with URL %s'%server.url)
 213             return {"aggregate": aggregate, "elapsed": time.time()-tStart, "status": "exception"}
 214
 215     if Callids().already_handled(call_id): return ""
 216     # Validate the RSpec against PlanetLab's schema --disabled for now
 217     # The schema used here needs to aggregate the PL and VINI schemas
 218     # schema = "/var/www/html/schemas/pl.rng"
 219     rspec = RSpec(rspec_str)
 220     schema = None
 221     if schema:
 222         rspec.validate(schema)
 223
 224     # if there is a <statistics> section, the aggregates don't care about it,
 225     # so delete it.
 226     drop_slicemgr_stats(rspec)
 227
 228     # attempt to use delegated credential first
 229     credential = api.getDelegatedCredential(creds)
 230     if not credential:
 231         credential = api.getCredential()
 232
 233     # get the callers hrn
 234     hrn, type = urn_to_hrn(xrn)
 235     valid_cred = api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
 236     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 237     threads = ThreadManager()
 238     for aggregate in api.aggregates:
 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 = api.aggregates[aggregate]
 244         # Just send entire RSpec to each aggregate
 245         threads.run(_CreateSliver, aggregate, server, xrn, credential, rspec.toxml(), users, call_id)
 246
 247     results = threads.get_results()
 248     manifest_version = version_manager._get_version(rspec.version.type, rspec.version.version, 'manifest')
 249     result_rspec = RSpec(version=manifest_version)
 250     for result in results:
 251         add_slicemgr_stat(result_rspec, "CreateSliver", result["aggregate"], result["elapsed"], result["status"])
 252         if result["status"]=="success":
 253             try:
 254                 result_rspec.version.merge(result["rspec"])
 255             except:
 256                 api.logger.log_exc("SM.CreateSliver: Failed to merge aggregate rspec")
 257     return result_rspec.toxml()
 258
 259 def RenewSliver(api, xrn, creds, expiration_time, call_id):
 260     def _RenewSliver(server, xrn, creds, expiration_time, call_id):
 261         server_version = api.get_cached_server_version(server)
 262         args =  [xrn, creds, expiration_time, call_id]
 263         if _call_id_supported(api, server):
 264             args.append(call_id)
 265         return server.RenewSliver(*args)
 266
 267     if Callids().already_handled(call_id): return True
 268
 269     (hrn, type) = urn_to_hrn(xrn)
 270     # get the callers hrn
 271     valid_cred = api.auth.checkCredentials(creds, 'renewsliver', hrn)[0]
 272     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 273
 274     # attempt to use delegated credential first
 275     credential = api.getDelegatedCredential(creds)
 276     if not credential:
 277         credential = api.getCredential()
 278     threads = ThreadManager()
 279     for aggregate in api.aggregates:
 280         # prevent infinite loop. Dont send request back to caller
 281         # unless the caller is the aggregate's SM
 282         if caller_hrn == aggregate and aggregate != api.hrn:
 283             continue
 284         server = api.aggregates[aggregate]
 285         threads.run(_RenewSliver, server, xrn, [credential], expiration_time, call_id)
 286     # 'and' the results
 287     return reduce (lambda x,y: x and y, threads.get_results() , True)
 288
 289 def DeleteSliver(api, xrn, creds, call_id):
 290     def _DeleteSliver(server, xrn, creds, call_id):
 291         server_version = api.get_cached_server_version(server)
 292         args =  [xrn, creds]
 293         if _call_id_supported(api, server):
 294             args.append(call_id)
 295         return server.DeleteSliver(*args)
 296
 297     if Callids().already_handled(call_id): return ""
 298     (hrn, type) = urn_to_hrn(xrn)
 299     # get the callers hrn
 300     valid_cred = api.auth.checkCredentials(creds, 'deletesliver', hrn)[0]
 301     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 302
 303     # attempt to use delegated credential first
 304     credential = api.getDelegatedCredential(creds)
 305     if not credential:
 306         credential = api.getCredential()
 307     threads = ThreadManager()
 308     for aggregate in api.aggregates:
 309         # prevent infinite loop. Dont send request back to caller
 310         # unless the caller is the aggregate's SM
 311         if caller_hrn == aggregate and aggregate != api.hrn:
 312             continue
 313         server = api.aggregates[aggregate]
 314         threads.run(_DeleteSliver, server, xrn, credential, call_id)
 315     threads.get_results()
 316     return 1
 317
 318
 319 # first draft at a merging SliverStatus
 320 def SliverStatus(api, slice_xrn, creds, call_id):
 321     def _SliverStatus(server, xrn, creds, call_id):
 322         server_version = api.get_cached_server_version(server)
 323         args =  [xrn, creds]
 324         if _call_id_supported(api, server):
 325             args.append(call_id)
 326         return server.SliverStatus(*args)
 327
 328     if Callids().already_handled(call_id): return {}
 329     # attempt to use delegated credential first
 330     credential = api.getDelegatedCredential(creds)
 331     if not credential:
 332         credential = api.getCredential()
 333     threads = ThreadManager()
 334     for aggregate in api.aggregates:
 335         server = api.aggregates[aggregate]
 336         threads.run (_SliverStatus, server, slice_xrn, credential, call_id)
 337     results = threads.get_results()
 338
 339     # get rid of any void result - e.g. when call_id was hit where by convention we return {}
 340     results = [ result for result in results if result and result['geni_resources']]
 341
 342     # do not try to combine if there's no result
 343     if not results : return {}
 344
 345     # otherwise let's merge stuff
 346     overall = {}
 347
 348     # mmh, it is expected that all results carry the same urn
 349     overall['geni_urn'] = results[0]['geni_urn']
 350     overall['pl_login'] = results[0]['pl_login']
 351     # append all geni_resources
 352     overall['geni_resources'] = \
 353         reduce (lambda x,y: x+y, [ result['geni_resources'] for result in results] , [])
 354     overall['status'] = 'unknown'
 355     if overall['geni_resources']:
 356         overall['status'] = 'ready'
 357
 358     return overall
 359
 360 caching=True
 361 #caching=False
 362 def ListSlices(api, creds, call_id):
 363     def _ListSlices(server, creds, call_id):
 364         server_version = api.get_cached_server_version(server)
 365         args =  [creds]
 366         if _call_id_supported(api, server):
 367             args.append(call_id)
 368         return server.ListSlices(*args)
 369
 370     if Callids().already_handled(call_id): return []
 371
 372     # look in cache first
 373     if caching and api.cache:
 374         slices = api.cache.get('slices')
 375         if slices:
 376             return slices
 377
 378     # get the callers hrn
 379     valid_cred = api.auth.checkCredentials(creds, 'listslices', None)[0]
 380     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 381
 382     # attempt to use delegated credential first
 383     credential = api.getDelegatedCredential(creds)
 384     if not credential:
 385         credential = api.getCredential()
 386     threads = ThreadManager()
 387     # fetch from aggregates
 388     for aggregate in api.aggregates:
 389         # prevent infinite loop. Dont send request back to caller
 390         # unless the caller is the aggregate's SM
 391         if caller_hrn == aggregate and aggregate != api.hrn:
 392             continue
 393         server = api.aggregates[aggregate]
 394         threads.run(_ListSlices, server, credential, call_id)
 395
 396     # combime results
 397     results = threads.get_results()
 398     slices = []
 399     for result in results:
 400         slices.extend(result)
 401
 402     # cache the result
 403     if caching and api.cache:
 404         api.cache.add('slices', slices)
 405
 406     return slices
 407
 408
 409 def get_ticket(api, xrn, creds, rspec, users):
 410     slice_hrn, type = urn_to_hrn(xrn)
 411     # get the netspecs contained within the clients rspec
 412     aggregate_rspecs = {}
 413     tree= etree.parse(StringIO(rspec))
 414     elements = tree.findall('./network')
 415     for element in elements:
 416         aggregate_hrn = element.values()[0]
 417         aggregate_rspecs[aggregate_hrn] = rspec
 418
 419     # get the callers hrn
 420     valid_cred = api.auth.checkCredentials(creds, 'getticket', slice_hrn)[0]
 421     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 422
 423     # attempt to use delegated credential first
 424     credential = api.getDelegatedCredential(creds)
 425     if not credential:
 426         credential = api.getCredential()
 427     threads = ThreadManager()
 428     for (aggregate, aggregate_rspec) in aggregate_rspecs.iteritems():
 429         # prevent infinite loop. Dont send request back to caller
 430         # unless the caller is the aggregate's SM
 431         if caller_hrn == aggregate and aggregate != api.hrn:
 432             continue
 433         server = None
 434         if aggregate in api.aggregates:
 435             server = api.aggregates[aggregate]
 436         else:
 437             net_urn = hrn_to_urn(aggregate, 'authority')
 438             # we may have a peer that knows about this aggregate
 439             for agg in api.aggregates:
 440                 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
 441                 if not target_aggs or not 'hrn' in target_aggs[0]:
 442                     continue
 443                 # send the request to this address
 444                 url = target_aggs[0]['url']
 445                 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file, timeout=30)
 446                 # aggregate found, no need to keep looping
 447                 break
 448         if server is None:
 449             continue
 450         threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
 451
 452     results = threads.get_results()
 453
 454     # gather information from each ticket
 455     rspecs = []
 456     initscripts = []
 457     slivers = []
 458     object_gid = None
 459     for result in results:
 460         agg_ticket = SfaTicket(string=result)
 461         attrs = agg_ticket.get_attributes()
 462         if not object_gid:
 463             object_gid = agg_ticket.get_gid_object()
 464         rspecs.append(agg_ticket.get_rspec())
 465         initscripts.extend(attrs.get('initscripts', []))
 466         slivers.extend(attrs.get('slivers', []))
 467
 468     # merge info
 469     attributes = {'initscripts': initscripts,
 470                  'slivers': slivers}
 471     merged_rspec = merge_rspecs(rspecs)
 472
 473     # create a new ticket
 474     ticket = SfaTicket(subject = slice_hrn)
 475     ticket.set_gid_caller(api.auth.client_gid)
 476     ticket.set_issuer(key=api.key, subject=api.hrn)
 477     ticket.set_gid_object(object_gid)
 478     ticket.set_pubkey(object_gid.get_pubkey())
 479     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 480     ticket.set_attributes(attributes)
 481     ticket.set_rspec(merged_rspec)
 482     ticket.encode()
 483     ticket.sign()
 484     return ticket.save_to_string(save_parents=True)
 485
 486 def start_slice(api, xrn, creds):
 487     hrn, type = urn_to_hrn(xrn)
 488
 489     # get the callers hrn
 490     valid_cred = api.auth.checkCredentials(creds, 'startslice', hrn)[0]
 491     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 492
 493     # attempt to use delegated credential first
 494     credential = api.getDelegatedCredential(creds)
 495     if not credential:
 496         credential = api.getCredential()
 497     threads = ThreadManager()
 498     for aggregate in api.aggregates:
 499         # prevent infinite loop. Dont send request back to caller
 500         # unless the caller is the aggregate's SM
 501         if caller_hrn == aggregate and aggregate != api.hrn:
 502             continue
 503         server = api.aggregates[aggregate]
 504         threads.run(server.Start, xrn, credential)
 505     threads.get_results()
 506     return 1
 507
 508 def stop_slice(api, xrn, creds):
 509     hrn, type = urn_to_hrn(xrn)
 510
 511     # get the callers hrn
 512     valid_cred = api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
 513     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 514
 515     # attempt to use delegated credential first
 516     credential = api.getDelegatedCredential(creds)
 517     if not credential:
 518         credential = api.getCredential()
 519     threads = ThreadManager()
 520     for aggregate in api.aggregates:
 521         # prevent infinite loop. Dont send request back to caller
 522         # unless the caller is the aggregate's SM
 523         if caller_hrn == aggregate and aggregate != api.hrn:
 524             continue
 525         server = api.aggregates[aggregate]
 526         threads.run(server.Stop, xrn, credential)
 527     threads.get_results()
 528     return 1
 529
 530 def reset_slice(api, xrn):
 531     """
 532     Not implemented
 533     """
 534     return 1
 535
 536 def shutdown(api, xrn, creds):
 537     """
 538     Not implemented
 539     """
 540     return 1
 541
 542 def status(api, xrn, creds):
 543     """
 544     Not implemented
 545     """
 546     return 1
 547
 548 def main():
 549     r = RSpec()
 550     r.parseFile(sys.argv[1])
 551     rspec = r.toDict()
 552     CreateSliver(None,'plc.princeton.tmacktestslice',rspec,'create-slice-tmacktestslice')
 553
 554 if __name__ == "__main__":
 555     main()
 556