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     server_version = api.get_cached_server_version(server)
  41
  42     if 'sfa' in server_version:
  43         code_tag = server_version['code_tag']
  44         code_tag_parts = code_tag.split("-")
  45
  46         version_parts = code_tag_parts[0].split(".")
  47         major, minor = version_parts[0], version_parts[1]
  48         rev = code_tag_parts[1]
  49         if int(major) > 1:
  50             if int(minor) > 0 or int(rev) > 20:
  51                 return True
  52     return False
  53
  54 # we have specialized xmlrpclib.ServerProxy to remember the input url
  55 # OTOH it's not clear if we're only dealing with XMLRPCServerProxy instances
  56 def get_serverproxy_url (server):
  57     try:
  58         return server.url
  59     except:
  60         logger.warning("GetVersion, falling back to xmlrpclib.ServerProxy internals")
  61         return server._ServerProxy__host + server._ServerProxy__handler
  62
  63 def GetVersion(api):
  64     # peers explicitly in aggregates.xml
  65     peers =dict ([ (peername,get_serverproxy_url(v)) for (peername,v) in api.aggregates.iteritems()
  66                    if peername != api.hrn])
  67     xrn=Xrn (api.hrn)
  68     request_rspec_versions = [dict(pg_rspec_request_version), dict(sfa_rspec_version)]
  69     ad_rspec_versions = [dict(pg_rspec_ad_version), dict(sfa_rspec_version)]
  70     version_more = {'interface':'slicemgr',
  71                     'hrn' : xrn.get_hrn(),
  72                     'urn' : xrn.get_urn(),
  73                     'peers': peers,
  74                     'request_rspec_versions': request_rspec_versions,
  75                     'ad_rspec_versions': ad_rspec_versions,
  76                     'default_ad_rspec': dict(sfa_rspec_version)
  77                     }
  78     sm_version=version_core(version_more)
  79     # local aggregate if present needs to have localhost resolved
  80     if api.hrn in api.aggregates:
  81         local_am_url=get_serverproxy_url(api.aggregates[api.hrn])
  82         sm_version['peers'][api.hrn]=local_am_url.replace('localhost',sm_version['hostname'])
  83     return sm_version
  84
  85
  86 def ListResources(api, creds, options, call_id):
  87     def _ListResources(server, credential, my_opts, call_id):
  88         args = [credential, my_opts]
  89         if _call_id_supported(api, server):
  90             args.append(call_id)
  91         try:
  92             return server.ListResources(*args)
  93         except Exception, e:
  94             api.logger.warn("ListResources failed at %s: %s" %(server.url, str(e)))
  95
  96     if Callids().already_handled(call_id): return ""
  97
  98     # get slice's hrn from options
  99     xrn = options.get('geni_slice_urn', '')
 100     (hrn, type) = urn_to_hrn(xrn)
 101     my_opts = copy(options)
 102     my_opts['geni_compressed'] = False
 103     if 'rspec_version' in my_opts:
 104         del my_opts['rspec_version']
 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     credentials = [credential]
 125     threads = ThreadManager()
 126     for aggregate in api.aggregates:
 127         # prevent infinite loop. Dont send request back to caller
 128         # unless the caller is the aggregate's SM
 129         if caller_hrn == aggregate and aggregate != api.hrn:
 130             continue
 131
 132         # For GENICloud
 133         if aggregate == api.hrn:
 134             continue
 135
 136         # get the rspec from the aggregate
 137         server = api.aggregates[aggregate]
 138         #threads.run(server.ListResources, credentials, my_opts, call_id)
 139         threads.run(_ListResources, server, credentials, my_opts, call_id)
 140
 141     results = threads.get_results()
 142     rspec_version = RSpecVersion(my_opts.get('rspec_version'))
 143     if rspec_version['type'] == pg_rspec_ad_version['type']:
 144         rspec = PGRSpec()
 145     else:
 146         rspec = SfaRSpec()
 147     for result in results:
 148         try:
 149             rspec.merge(result)
 150         except:
 151             api.logger.info("SM.ListResources: Failed to merge aggregate rspec")
 152
 153     # cache the result
 154     if caching and api.cache and not xrn:
 155         api.cache.add(version_string, rspec.toxml())
 156
 157     return rspec.toxml()
 158
 159
 160 def CreateSliver(api, xrn, creds, rspec_str, users, call_id):
 161
 162     def _CreateSliver(server, xrn, credential, rspec, users, call_id):
 163         try:
 164             # Need to call GetVersion at an aggregate to determine the supported
 165             # rspec type/format beofre calling CreateSliver at an Aggregate.
 166             server_version = api.get_cached_server_version(server)
 167             if 'sfa' not in aggregate_version and 'geni_api' in aggregate_version:
 168                 # sfa aggregtes support both sfa and pg rspecs, no need to convert
 169                 # if aggregate supports sfa rspecs. otherwise convert to pg rspec
 170                 rspec = RSpecConverter.to_pg_rspec(rspec)
 171             args = [xrn, credential, rspec, users]
 172             if _call_id_supported(api, server):
 173                 args.append(call_id)
 174             try:
 175                 return server.CreateSliver(*args)
 176             except Exception, e:
 177                 api.logger.warn("CreateSliver failed at %s: %s" %(server.url, str(e)))
 178         except:
 179             logger.log_exc('Something wrong in _CreateSliver')
 180
 181     if Callids().already_handled(call_id): return ""
 182     # Validate the RSpec against PlanetLab's schema --disabled for now
 183     # The schema used here needs to aggregate the PL and VINI schemas
 184     # schema = "/var/www/html/schemas/pl.rng"
 185     rspec = parse_rspec(rspec_str)
 186     schema = None
 187     if schema:
 188         rspec.validate(schema)
 189
 190     # attempt to use delegated credential first
 191     credential = api.getDelegatedCredential(creds)
 192     if not credential:
 193         credential = api.getCredential()
 194
 195     # get the callers hrn
 196     hrn, type = urn_to_hrn(xrn)
 197     valid_cred = api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
 198     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 199     threads = ThreadManager()
 200     for aggregate in api.aggregates:
 201         # prevent infinite loop. Dont send request back to caller
 202         # unless the caller is the aggregate's SM
 203         if caller_hrn == aggregate and aggregate != api.hrn:
 204             continue
 205         server = api.aggregates[aggregate]
 206         # Just send entire RSpec to each aggregate
 207         threads.run(_CreateSliver, server, xrn, credential, rspec.toxml(), users, call_id)
 208
 209     results = threads.get_results()
 210     rspec = SfaRSpec()
 211     for result in results:
 212         rspec.merge(result)
 213     return rspec.toxml()
 214
 215 def RenewSliver(api, xrn, creds, expiration_time, call_id):
 216     def _RenewSliver(server, xrn, creds, expiration_time, call_id):
 217         server_version = _get_server_version(api, server)
 218         args =  [xrn, creds, expiration_time, call_id]
 219         if _call_id_supported(api, server):
 220             args.append(call_id)
 221         return server.RenewSliver(*args)
 222
 223     if Callids().already_handled(call_id): return True
 224
 225     (hrn, type) = urn_to_hrn(xrn)
 226     # get the callers hrn
 227     valid_cred = api.auth.checkCredentials(creds, 'renewsliver', hrn)[0]
 228     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 229
 230     # attempt to use delegated credential first
 231     credential = api.getDelegatedCredential(creds)
 232     if not credential:
 233         credential = api.getCredential()
 234     threads = ThreadManager()
 235     for aggregate in api.aggregates:
 236         # prevent infinite loop. Dont send request back to caller
 237         # unless the caller is the aggregate's SM
 238         if caller_hrn == aggregate and aggregate != api.hrn:
 239             continue
 240         server = api.aggregates[aggregate]
 241         threads.run(_RenewSliver, server, xrn, [credential], expiration_time, call_id)
 242     # 'and' the results
 243     return reduce (lambda x,y: x and y, threads.get_results() , True)
 244
 245 def DeleteSliver(api, xrn, creds, call_id):
 246     def _DeleteSliver(server, xrn, creds, call_id):
 247         server_version = _get_server_version(api, server)
 248         args =  [xrn, creds]
 249         if _call_id_supported(api, server):
 250             args.append(call_id)
 251         return server.DeleteSliver(*args)
 252
 253     if Callids().already_handled(call_id): return ""
 254     (hrn, type) = urn_to_hrn(xrn)
 255     # get the callers hrn
 256     valid_cred = api.auth.checkCredentials(creds, 'deletesliver', hrn)[0]
 257     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 258
 259     # attempt to use delegated credential first
 260     credential = api.getDelegatedCredential(creds)
 261     if not credential:
 262         credential = api.getCredential()
 263     threads = ThreadManager()
 264     for aggregate in api.aggregates:
 265         # prevent infinite loop. Dont send request back to caller
 266         # unless the caller is the aggregate's SM
 267         if caller_hrn == aggregate and aggregate != api.hrn:
 268             continue
 269         server = api.aggregates[aggregate]
 270         threads.run(_DeleteSliver, server, xrn, credential, call_id)
 271     threads.get_results()
 272     return 1
 273
 274
 275 # first draft at a merging SliverStatus
 276 def SliverStatus(api, slice_xrn, creds, call_id):
 277     def _SliverStatus(server, xrn, creds, call_id):
 278         server_version = _get_server_version(api, server)
 279         args =  [xrn, creds]
 280         if _call_id_supported(api, server):
 281             args.append(call_id)
 282         return server.SliverStatus(*args)
 283
 284     if Callids().already_handled(call_id): return {}
 285     # attempt to use delegated credential first
 286     credential = api.getDelegatedCredential(creds)
 287     if not credential:
 288         credential = api.getCredential()
 289     threads = ThreadManager()
 290     for aggregate in api.aggregates:
 291         server = api.aggregates[aggregate]
 292         threads.run (_SliverStatus, server, slice_xrn, credential, call_id)
 293     results = threads.get_results()
 294
 295     # get rid of any void result - e.g. when call_id was hit where by convention we return {}
 296     results = [ result for result in results if result and result['geni_resources']]
 297
 298     # do not try to combine if there's no result
 299     if not results : return {}
 300
 301     # otherwise let's merge stuff
 302     overall = {}
 303
 304     # mmh, it is expected that all results carry the same urn
 305     overall['geni_urn'] = results[0]['geni_urn']
 306     overall['pl_login'] = results[0]['pl_login']
 307     # append all geni_resources
 308     overall['geni_resources'] = \
 309         reduce (lambda x,y: x+y, [ result['geni_resources'] for result in results] , [])
 310     overall['status'] = 'unknown'
 311     if overall['geni_resources']:
 312         overall['status'] = 'ready'
 313
 314     return overall
 315
 316 caching=True
 317 #caching=False
 318 def ListSlices(api, creds, call_id):
 319     def _ListSlices(server, creds, call_id):
 320         server_version = _get_server_version(api, server)
 321         args =  [creds]
 322         if _call_id_supported(api, server):
 323             args.append(call_id)
 324         return server.ListSlices(*args)
 325
 326     if Callids().already_handled(call_id): return []
 327
 328     # look in cache first
 329     if caching and api.cache:
 330         slices = api.cache.get('slices')
 331         if slices:
 332             return slices
 333
 334     # get the callers hrn
 335     valid_cred = api.auth.checkCredentials(creds, 'listslices', None)[0]
 336     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 337
 338     # attempt to use delegated credential first
 339     credential = api.getDelegatedCredential(creds)
 340     if not credential:
 341         credential = api.getCredential()
 342     threads = ThreadManager()
 343     # fetch from aggregates
 344     for aggregate in api.aggregates:
 345         # prevent infinite loop. Dont send request back to caller
 346         # unless the caller is the aggregate's SM
 347         if caller_hrn == aggregate and aggregate != api.hrn:
 348             continue
 349         server = api.aggregates[aggregate]
 350         threads.run(_ListSlices, server, credential, call_id)
 351
 352     # combime results
 353     results = threads.get_results()
 354     slices = []
 355     for result in results:
 356         slices.extend(result)
 357
 358     # cache the result
 359     if caching and api.cache:
 360         api.cache.add('slices', slices)
 361
 362     return slices
 363
 364
 365 def get_ticket(api, xrn, creds, rspec, users):
 366     slice_hrn, type = urn_to_hrn(xrn)
 367     # get the netspecs contained within the clients rspec
 368     aggregate_rspecs = {}
 369     tree= etree.parse(StringIO(rspec))
 370     elements = tree.findall('./network')
 371     for element in elements:
 372         aggregate_hrn = element.values()[0]
 373         aggregate_rspecs[aggregate_hrn] = rspec
 374
 375     # get the callers hrn
 376     valid_cred = api.auth.checkCredentials(creds, 'getticket', slice_hrn)[0]
 377     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 378
 379     # attempt to use delegated credential first
 380     credential = api.getDelegatedCredential(creds)
 381     if not credential:
 382         credential = api.getCredential()
 383     threads = ThreadManager()
 384     for (aggregate, aggregate_rspec) in aggregate_rspecs.iteritems():
 385         # prevent infinite loop. Dont send request back to caller
 386         # unless the caller is the aggregate's SM
 387         if caller_hrn == aggregate and aggregate != api.hrn:
 388             continue
 389         server = None
 390         if aggregate in api.aggregates:
 391             server = api.aggregates[aggregate]
 392         else:
 393             net_urn = hrn_to_urn(aggregate, 'authority')
 394             # we may have a peer that knows about this aggregate
 395             for agg in api.aggregates:
 396                 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
 397                 if not target_aggs or not 'hrn' in target_aggs[0]:
 398                     continue
 399                 # send the request to this address
 400                 url = target_aggs[0]['url']
 401                 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
 402                 # aggregate found, no need to keep looping
 403                 break
 404         if server is None:
 405             continue
 406         threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
 407
 408     results = threads.get_results()
 409
 410     # gather information from each ticket
 411     rspecs = []
 412     initscripts = []
 413     slivers = []
 414     object_gid = None
 415     for result in results:
 416         agg_ticket = SfaTicket(string=result)
 417         attrs = agg_ticket.get_attributes()
 418         if not object_gid:
 419             object_gid = agg_ticket.get_gid_object()
 420         rspecs.append(agg_ticket.get_rspec())
 421         initscripts.extend(attrs.get('initscripts', []))
 422         slivers.extend(attrs.get('slivers', []))
 423
 424     # merge info
 425     attributes = {'initscripts': initscripts,
 426                  'slivers': slivers}
 427     merged_rspec = merge_rspecs(rspecs)
 428
 429     # create a new ticket
 430     ticket = SfaTicket(subject = slice_hrn)
 431     ticket.set_gid_caller(api.auth.client_gid)
 432     ticket.set_issuer(key=api.key, subject=api.hrn)
 433     ticket.set_gid_object(object_gid)
 434     ticket.set_pubkey(object_gid.get_pubkey())
 435     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 436     ticket.set_attributes(attributes)
 437     ticket.set_rspec(merged_rspec)
 438     ticket.encode()
 439     ticket.sign()
 440     return ticket.save_to_string(save_parents=True)
 441
 442 def start_slice(api, xrn, creds):
 443     hrn, type = urn_to_hrn(xrn)
 444
 445     # get the callers hrn
 446     valid_cred = api.auth.checkCredentials(creds, 'startslice', hrn)[0]
 447     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 448
 449     # attempt to use delegated credential first
 450     credential = api.getDelegatedCredential(creds)
 451     if not credential:
 452         credential = api.getCredential()
 453     threads = ThreadManager()
 454     for aggregate in api.aggregates:
 455         # prevent infinite loop. Dont send request back to caller
 456         # unless the caller is the aggregate's SM
 457         if caller_hrn == aggregate and aggregate != api.hrn:
 458             continue
 459         server = api.aggregates[aggregate]
 460         threads.run(server.Start, xrn, credential)
 461     threads.get_results()
 462     return 1
 463
 464 def stop_slice(api, xrn, creds):
 465     hrn, type = urn_to_hrn(xrn)
 466
 467     # get the callers hrn
 468     valid_cred = api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
 469     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 470
 471     # attempt to use delegated credential first
 472     credential = api.getDelegatedCredential(creds)
 473     if not credential:
 474         credential = api.getCredential()
 475     threads = ThreadManager()
 476     for aggregate in api.aggregates:
 477         # prevent infinite loop. Dont send request back to caller
 478         # unless the caller is the aggregate's SM
 479         if caller_hrn == aggregate and aggregate != api.hrn:
 480             continue
 481         server = api.aggregates[aggregate]
 482         threads.run(server.Stop, xrn, credential)
 483     threads.get_results()
 484     return 1
 485
 486 def reset_slice(api, xrn):
 487     """
 488     Not implemented
 489     """
 490     return 1
 491
 492 def shutdown(api, xrn, creds):
 493     """
 494     Not implemented
 495     """
 496     return 1
 497
 498 def status(api, xrn, creds):
 499     """
 500     Not implemented
 501     """
 502     return 1
 503
 504 def main():
 505     r = RSpec()
 506     r.parseFile(sys.argv[1])
 507     rspec = r.toDict()
 508     CreateSliver(None,'plc.princeton.tmacktestslice',rspec,'create-slice-tmacktestslice')
 509
 510 if __name__ == "__main__":
 511     main()
 512