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.pg_rspec import PGRSpec
  19 from sfa.rspecs.sfa_rspec import SfaRSpec
  20 from sfa.rspecs.rspec_converter import RSpecConverter
  21 from sfa.rspecs.rspec_parser import parse_rspec
  22 from sfa.rspecs.rspec_version import RSpecVersion
  23 from sfa.rspecs.sfa_rspec import sfa_rspec_version
  24 from sfa.rspecs.pg_rspec import pg_rspec_ad_version, pg_rspec_request_version
  25 from sfa.util.policy import Policy
  26 from sfa.util.prefixTree import prefixTree
  27 from sfa.util.sfaticket import *
  28 from sfa.trust.credential import Credential
  29 from sfa.util.threadmanager import ThreadManager
  30 import sfa.util.xmlrpcprotocol as xmlrpcprotocol
  31 import sfa.plc.peers as peers
  32 from sfa.util.version import version_core
  33 from sfa.util.callids import Callids
  34
  35
  36 def _call_id_supported(api, server):
  37     """
  38     Returns true if server support the optional call_id arg, false otherwise.
  39     """
  40     cache_key = server.url + "-version"
  41     server_version = api.cache.get(cache_key)
  42     if not server_version:
  43         server_version = server.GetVersion()
  44         # cache version for 24 hours
  45         cache.add(cache_key, server_version, ttl= 60*60*24)
  46
  47     if 'sfa' in server_version:
  48         code_tag = server_version['code_tag']
  49         code_tag_parts = code_tag.split("-")
  50
  51         version_parts = code_tag_parts[0].split(".")
  52         major, minor = version_parts[0], version_parts[1]
  53         rev = code_tag_parts[1]
  54         if int(major) > 1:
  55             if int(minor) > 0 or int(rev) > 20:
  56                 return True
  57     return False
  58
  59 # we have specialized xmlrpclib.ServerProxy to remember the input url
  60 # OTOH it's not clear if we're only dealing with XMLRPCServerProxy instances
  61 def get_serverproxy_url (server):
  62     try:
  63         return server.url
  64     except:
  65         logger.warning("GetVersion, falling back to xmlrpclib.ServerProxy internals")
  66         return server._ServerProxy__host + server._ServerProxy__handler
  67
  68 def GetVersion(api):
  69     # peers explicitly in aggregates.xml
  70     peers =dict ([ (peername,get_serverproxy_url(v)) for (peername,v) in api.aggregates.iteritems()
  71                    if peername != api.hrn])
  72     xrn=Xrn (api.hrn)
  73     request_rspec_versions = [dict(pg_rspec_request_version), dict(sfa_rspec_version)]
  74     ad_rspec_versions = [dict(pg_rspec_ad_version), dict(sfa_rspec_version)]
  75     version_more = {'interface':'slicemgr',
  76                     'hrn' : xrn.get_hrn(),
  77                     'urn' : xrn.get_urn(),
  78                     'peers': peers,
  79                     'request_rspec_versions': request_rspec_versions,
  80                     'ad_rspec_versions': ad_rspec_versions,
  81                     'default_ad_rspec': dict(sfa_rspec_version)
  82                     }
  83     sm_version=version_core(version_more)
  84     # local aggregate if present needs to have localhost resolved
  85     if api.hrn in api.aggregates:
  86         local_am_url=get_serverproxy_url(api.aggregates[api.hrn])
  87         sm_version['peers'][api.hrn]=local_am_url.replace('localhost',sm_version['hostname'])
  88     return sm_version
  89
  90
  91 def ListResources(api, creds, options, call_id):
  92     def _ListResources(server, credential, my_opts, call_id):
  93         args = [credential, my_opts]
  94         if _call_id_supported(api, server):
  95             args.append(call_id)
  96         return server.ListResources(*args)
  97
  98     if Callids().already_handled(call_id): return ""
  99
 100     # get slice's hrn from options
 101     xrn = options.get('geni_slice_urn', '')
 102     (hrn, type) = urn_to_hrn(xrn)
 103     my_opts = copy(options)
 104     my_opts['geni_compressed'] = False
 105
 106     # get the rspec's return format from options
 107     rspec_version = RSpecVersion(options.get('rspec_version'))
 108     version_string = "rspec_%s" % (rspec_version.get_version_name())
 109
 110     # look in cache first
 111     if caching and api.cache and not xrn:
 112         rspec =  api.cache.get(version_string)
 113         if rspec:
 114             return rspec
 115
 116     # get the callers hrn
 117     valid_cred = api.auth.checkCredentials(creds, 'listnodes', hrn)[0]
 118     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 119
 120     # attempt to use delegated credential first
 121     credential = api.getDelegatedCredential(creds)
 122     if not credential:
 123         credential = api.getCredential()
 124     threads = ThreadManager()
 125     for aggregate in api.aggregates:
 126         # prevent infinite loop. Dont send request back to caller
 127         # unless the caller is the aggregate's SM
 128         if caller_hrn == aggregate and aggregate != api.hrn:
 129             continue
 130         # get the rspec from the aggregate
 131         server = api.aggregates[aggregate]
 132         #threads.run(server.ListResources, credential, my_opts, call_id)
 133         threads.run(_ListResources, server, credential, my_opts, call_id)
 134
 135     results = threads.get_results()
 136     rspec_version = RSpecVersion(my_opts.get('rspec_version'))
 137     if rspec_version['type'] == pg_rspec_ad_version['type']:
 138         rspec = PGRSpec()
 139     else:
 140         rspec = SfaRSpec()
 141     for result in results:
 142         try:
 143             rspec.merge(result)
 144         except:
 145             api.logger.info("SM.ListResources: Failed to merge aggregate rspec")
 146
 147     # cache the result
 148     if caching and api.cache and not xrn:
 149         api.cache.add(version_string, rspec.toxml())
 150
 151     return rspec.toxml()
 152
 153
 154 def CreateSliver(api, xrn, creds, rspec_str, users, call_id):
 155
 156     def _CreateSliver(server, xrn, credential, rspec, users, call_id):
 157             # Need to call GetVersion at an aggregate to determine the supported
 158             # rspec type/format beofre calling CreateSliver at an Aggregate.
 159             server_version = _get_server_version(api, server)
 160             if 'sfa' not in aggregate_version and 'geni_api' in aggregate_version:
 161                 # sfa aggregtes support both sfa and pg rspecs, no need to convert
 162                 # if aggregate supports sfa rspecs. othewise convert to pg rspec
 163                 rspec = RSpecConverter.to_pg_rspec(rspec)
 164             args = [xrn, credential, rspec, users]
 165             if _call_id_supported(api, server):
 166                 args.append(call_id)
 167             return server.CreateSliver(*args)
 168
 169     if Callids().already_handled(call_id): return ""
 170     # Validate the RSpec against PlanetLab's schema --disabled for now
 171     # The schema used here needs to aggregate the PL and VINI schemas
 172     # schema = "/var/www/html/schemas/pl.rng"
 173     rspec = parse_rspec(rspec_str)
 174     schema = None
 175     if schema:
 176         rspec.validate(schema)
 177
 178     # attempt to use delegated credential first
 179     credential = api.getDelegatedCredential(creds)
 180     if not credential:
 181         credential = api.getCredential()
 182
 183     # get the callers hrn
 184     hrn, type = urn_to_hrn(xrn)
 185     valid_cred = api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
 186     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 187     threads = ThreadManager()
 188     for aggregate in api.aggregates:
 189         # prevent infinite loop. Dont send request back to caller
 190         # unless the caller is the aggregate's SM
 191         if caller_hrn == aggregate and aggregate != api.hrn:
 192             continue
 193         server = api.aggregates[aggregate]
 194         # Just send entire RSpec to each aggregate
 195         threads.run(_CreateSliver, server, xrn, credential, rspec.toxml(), users, call_id)
 196
 197     results = threads.get_results()
 198     rspec = SfaRSpec()
 199     for result in results:
 200         rspec.merge(result)
 201     return rspec.toxml()
 202
 203 def RenewSliver(api, xrn, creds, expiration_time, call_id):
 204     def _RenewSliver(server, xrn, creds, expiration_time, call_id):
 205         server_version = _get_server_version(api, server)
 206         args =  [xrn, creds, expiration_time, call_id]
 207         if _call_id_supported(api, server):
 208             args.append(call_id)
 209         return server.RenewSliver(*args)
 210
 211     if Callids().already_handled(call_id): return True
 212
 213     (hrn, type) = urn_to_hrn(xrn)
 214     # get the callers hrn
 215     valid_cred = api.auth.checkCredentials(creds, 'renewsliver', hrn)[0]
 216     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 217
 218     # attempt to use delegated credential first
 219     credential = api.getDelegatedCredential(creds)
 220     if not credential:
 221         credential = api.getCredential()
 222     threads = ThreadManager()
 223     for aggregate in api.aggregates:
 224         # prevent infinite loop. Dont send request back to caller
 225         # unless the caller is the aggregate's SM
 226         if caller_hrn == aggregate and aggregate != api.hrn:
 227             continue
 228         server = api.aggregates[aggregate]
 229         threads.run(_RenewSliver, server, xrn, [credential], expiration_time, call_id)
 230     # 'and' the results
 231     return reduce (lambda x,y: x and y, threads.get_results() , True)
 232
 233 def DeleteSliver(api, xrn, creds, call_id):
 234     def _DeleteSliver(server, xrn, creds, call_id):
 235         server_version = _get_server_version(api, server)
 236         args =  [xrn, creds]
 237         if _call_id_supported(api, server):
 238             args.append(call_id)
 239         return server.DeleteSliver(*args)
 240
 241     if Callids().already_handled(call_id): return ""
 242     (hrn, type) = urn_to_hrn(xrn)
 243     # get the callers hrn
 244     valid_cred = api.auth.checkCredentials(creds, 'deletesliver', hrn)[0]
 245     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 246
 247     # attempt to use delegated credential first
 248     credential = api.getDelegatedCredential(creds)
 249     if not credential:
 250         credential = api.getCredential()
 251     threads = ThreadManager()
 252     for aggregate in api.aggregates:
 253         # prevent infinite loop. Dont send request back to caller
 254         # unless the caller is the aggregate's SM
 255         if caller_hrn == aggregate and aggregate != api.hrn:
 256             continue
 257         server = api.aggregates[aggregate]
 258         threads.run(_DeleteSliver, server, xrn, credential, call_id)
 259     threads.get_results()
 260     return 1
 261
 262
 263 # first draft at a merging SliverStatus
 264 def SliverStatus(api, slice_xrn, creds, call_id):
 265     def _SliverStatus(server, xrn, creds, call_id):
 266         server_version = _get_server_version(api, server)
 267         args =  [xrn, creds]
 268         if _call_id_supported(api, server):
 269             args.append(call_id)
 270         return server.SliverStatus(*args)
 271
 272     if Callids().already_handled(call_id): return {}
 273     # attempt to use delegated credential first
 274     credential = api.getDelegatedCredential(creds)
 275     if not credential:
 276         credential = api.getCredential()
 277     threads = ThreadManager()
 278     for aggregate in api.aggregates:
 279         server = api.aggregates[aggregate]
 280         threads.run (_SliverStatus, server, slice_xrn, credential, call_id)
 281     results = threads.get_results()
 282
 283     # get rid of any void result - e.g. when call_id was hit where by convention we return {}
 284     results = [ result for result in results if result and result['geni_resources']]
 285
 286     # do not try to combine if there's no result
 287     if not results : return {}
 288
 289     # otherwise let's merge stuff
 290     overall = {}
 291
 292     # mmh, it is expected that all results carry the same urn
 293     overall['geni_urn'] = results[0]['geni_urn']
 294     overall['pl_login'] = results[0]['pl_login']
 295     # append all geni_resources
 296     overall['geni_resources'] = \
 297         reduce (lambda x,y: x+y, [ result['geni_resources'] for result in results] , [])
 298     overall['status'] = 'unknown'
 299     if overall['geni_resources']:
 300         overall['status'] = 'ready'
 301
 302     return overall
 303
 304 caching=True
 305 #caching=False
 306 def ListSlices(api, creds, call_id):
 307     def _ListSlices(server, creds, call_id):
 308         server_version = _get_server_version(api, server)
 309         args =  [creds]
 310         if _call_id_supported(api, server):
 311             args.append(call_id)
 312         return server.ListSlices(*args)
 313
 314     if Callids().already_handled(call_id): return []
 315
 316     # look in cache first
 317     if caching and api.cache:
 318         slices = api.cache.get('slices')
 319         if slices:
 320             return slices
 321
 322     # get the callers hrn
 323     valid_cred = api.auth.checkCredentials(creds, 'listslices', None)[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     # fetch from aggregates
 332     for aggregate in api.aggregates:
 333         # prevent infinite loop. Dont send request back to caller
 334         # unless the caller is the aggregate's SM
 335         if caller_hrn == aggregate and aggregate != api.hrn:
 336             continue
 337         server = api.aggregates[aggregate]
 338         threads.run(_ListSlices, server, credential, call_id)
 339
 340     # combime results
 341     results = threads.get_results()
 342     slices = []
 343     for result in results:
 344         slices.extend(result)
 345
 346     # cache the result
 347     if caching and api.cache:
 348         api.cache.add('slices', slices)
 349
 350     return slices
 351
 352
 353     if rspec_version['type'] == pg_rspec_ad_version['type']:
 354         rspec = PGRSpec()
 355     else:
 356         rspec = SfaRSpec()
 357     for result in results:
 358         try:
 359             rspec.merge(result)
 360         except:
 361             api.logger.info("SM.ListResources: Failed to merge aggregate rspec")
 362
 363     # cache the result
 364     if caching and api.cache and not xrn:
 365         api.cache.add(version_string, rspec.toxml())
 366
 367     return rspec.toxml()
 368
 369
 370 def get_ticket(api, xrn, creds, rspec, users):
 371     slice_hrn, type = urn_to_hrn(xrn)
 372     # get the netspecs contained within the clients rspec
 373     aggregate_rspecs = {}
 374     tree= etree.parse(StringIO(rspec))
 375     elements = tree.findall('./network')
 376     for element in elements:
 377         aggregate_hrn = element.values()[0]
 378         aggregate_rspecs[aggregate_hrn] = rspec
 379
 380     # get the callers hrn
 381     valid_cred = api.auth.checkCredentials(creds, 'getticket', slice_hrn)[0]
 382     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 383
 384     # attempt to use delegated credential first
 385     credential = api.getDelegatedCredential(creds)
 386     if not credential:
 387         credential = api.getCredential()
 388     threads = ThreadManager()
 389     for (aggregate, aggregate_rspec) in aggregate_rspecs.iteritems():
 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 = None
 395         if aggregate in api.aggregates:
 396             server = api.aggregates[aggregate]
 397         else:
 398             net_urn = hrn_to_urn(aggregate, 'authority')
 399             # we may have a peer that knows about this aggregate
 400             for agg in api.aggregates:
 401                 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
 402                 if not target_aggs or not 'hrn' in target_aggs[0]:
 403                     continue
 404                 # send the request to this address
 405                 url = target_aggs[0]['url']
 406                 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
 407                 # aggregate found, no need to keep looping
 408                 break
 409         if server is None:
 410             continue
 411         threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
 412
 413     results = threads.get_results()
 414
 415     # gather information from each ticket
 416     rspecs = []
 417     initscripts = []
 418     slivers = []
 419     object_gid = None
 420     for result in results:
 421         agg_ticket = SfaTicket(string=result)
 422         attrs = agg_ticket.get_attributes()
 423         if not object_gid:
 424             object_gid = agg_ticket.get_gid_object()
 425         rspecs.append(agg_ticket.get_rspec())
 426         initscripts.extend(attrs.get('initscripts', []))
 427         slivers.extend(attrs.get('slivers', []))
 428
 429     # merge info
 430     attributes = {'initscripts': initscripts,
 431                  'slivers': slivers}
 432     merged_rspec = merge_rspecs(rspecs)
 433
 434     # create a new ticket
 435     ticket = SfaTicket(subject = slice_hrn)
 436     ticket.set_gid_caller(api.auth.client_gid)
 437     ticket.set_issuer(key=api.key, subject=api.hrn)
 438     ticket.set_gid_object(object_gid)
 439     ticket.set_pubkey(object_gid.get_pubkey())
 440     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 441     ticket.set_attributes(attributes)
 442     ticket.set_rspec(merged_rspec)
 443     ticket.encode()
 444     ticket.sign()
 445     return ticket.save_to_string(save_parents=True)
 446
 447 def start_slice(api, xrn, creds):
 448     hrn, type = urn_to_hrn(xrn)
 449
 450     # get the callers hrn
 451     valid_cred = api.auth.checkCredentials(creds, 'startslice', hrn)[0]
 452     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 453
 454     # attempt to use delegated credential first
 455     credential = api.getDelegatedCredential(creds)
 456     if not credential:
 457         credential = api.getCredential()
 458     threads = ThreadManager()
 459     for aggregate in api.aggregates:
 460         # prevent infinite loop. Dont send request back to caller
 461         # unless the caller is the aggregate's SM
 462         if caller_hrn == aggregate and aggregate != api.hrn:
 463             continue
 464         server = api.aggregates[aggregate]
 465         threads.run(server.Start, xrn, credential)
 466     threads.get_results()
 467     return 1
 468
 469 def stop_slice(api, xrn, creds):
 470     hrn, type = urn_to_hrn(xrn)
 471
 472     # get the callers hrn
 473     valid_cred = api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
 474     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 475
 476     # attempt to use delegated credential first
 477     credential = api.getDelegatedCredential(creds)
 478     if not credential:
 479         credential = api.getCredential()
 480     threads = ThreadManager()
 481     for aggregate in api.aggregates:
 482         # prevent infinite loop. Dont send request back to caller
 483         # unless the caller is the aggregate's SM
 484         if caller_hrn == aggregate and aggregate != api.hrn:
 485             continue
 486         server = api.aggregates[aggregate]
 487         threads.run(server.Stop, xrn, credential)
 488     threads.get_results()
 489     return 1
 490
 491 def reset_slice(api, xrn):
 492     """
 493     Not implemented
 494     """
 495     return 1
 496
 497 def shutdown(api, xrn, creds):
 498     """
 499     Not implemented
 500     """
 501     return 1
 502
 503 def status(api, xrn, creds):
 504     """
 505     Not implemented
 506     """
 507     return 1
 508
 509 def main():
 510     r = RSpec()
 511     r.parseFile(sys.argv[1])
 512     rspec = r.toDict()
 513     CreateSliver(None,'plc.princeton.tmacktestslice',rspec,'create-slice-tmacktestslice')
 514
 515 if __name__ == "__main__":
 516     main()
 517