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             # Need to call GetVersion at an aggregate to determine the supported
 164             # rspec type/format beofre calling CreateSliver at an Aggregate.
 165             server_version = _get_server_version(api, server)
 166             if 'sfa' not in aggregate_version and 'geni_api' in aggregate_version:
 167                 # sfa aggregtes support both sfa and pg rspecs, no need to convert
 168                 # if aggregate supports sfa rspecs. othewise convert to pg rspec
 169                 rspec = RSpecConverter.to_pg_rspec(rspec)
 170             args = [xrn, credential, rspec, users]
 171             if _call_id_supported(api, server):
 172                 args.append(call_id)
 173             try:
 174                 return server.CreateSliver(*args)
 175             except Exception, e:
 176                 api.logger.warn("CreateSliver failed at %s: %s" %(server.url, str(e)))
 177
 178     if Callids().already_handled(call_id): return ""
 179     # Validate the RSpec against PlanetLab's schema --disabled for now
 180     # The schema used here needs to aggregate the PL and VINI schemas
 181     # schema = "/var/www/html/schemas/pl.rng"
 182     rspec = parse_rspec(rspec_str)
 183     schema = None
 184     if schema:
 185         rspec.validate(schema)
 186
 187     # attempt to use delegated credential first
 188     credential = api.getDelegatedCredential(creds)
 189     if not credential:
 190         credential = api.getCredential()
 191
 192     # get the callers hrn
 193     hrn, type = urn_to_hrn(xrn)
 194     valid_cred = api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
 195     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 196     threads = ThreadManager()
 197     for aggregate in api.aggregates:
 198         # prevent infinite loop. Dont send request back to caller
 199         # unless the caller is the aggregate's SM
 200         if caller_hrn == aggregate and aggregate != api.hrn:
 201             continue
 202         server = api.aggregates[aggregate]
 203         # Just send entire RSpec to each aggregate
 204         threads.run(_CreateSliver, server, xrn, credential, rspec.toxml(), users, call_id)
 205
 206     results = threads.get_results()
 207     rspec = SfaRSpec()
 208     for result in results:
 209         rspec.merge(result)
 210     return rspec.toxml()
 211
 212 def RenewSliver(api, xrn, creds, expiration_time, call_id):
 213     def _RenewSliver(server, xrn, creds, expiration_time, call_id):
 214         server_version = _get_server_version(api, server)
 215         args =  [xrn, creds, expiration_time, call_id]
 216         if _call_id_supported(api, server):
 217             args.append(call_id)
 218         return server.RenewSliver(*args)
 219
 220     if Callids().already_handled(call_id): return True
 221
 222     (hrn, type) = urn_to_hrn(xrn)
 223     # get the callers hrn
 224     valid_cred = api.auth.checkCredentials(creds, 'renewsliver', hrn)[0]
 225     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 226
 227     # attempt to use delegated credential first
 228     credential = api.getDelegatedCredential(creds)
 229     if not credential:
 230         credential = api.getCredential()
 231     threads = ThreadManager()
 232     for aggregate in api.aggregates:
 233         # prevent infinite loop. Dont send request back to caller
 234         # unless the caller is the aggregate's SM
 235         if caller_hrn == aggregate and aggregate != api.hrn:
 236             continue
 237         server = api.aggregates[aggregate]
 238         threads.run(_RenewSliver, server, xrn, [credential], expiration_time, call_id)
 239     # 'and' the results
 240     return reduce (lambda x,y: x and y, threads.get_results() , True)
 241
 242 def DeleteSliver(api, xrn, creds, call_id):
 243     def _DeleteSliver(server, xrn, creds, call_id):
 244         server_version = _get_server_version(api, server)
 245         args =  [xrn, creds]
 246         if _call_id_supported(api, server):
 247             args.append(call_id)
 248         return server.DeleteSliver(*args)
 249
 250     if Callids().already_handled(call_id): return ""
 251     (hrn, type) = urn_to_hrn(xrn)
 252     # get the callers hrn
 253     valid_cred = api.auth.checkCredentials(creds, 'deletesliver', hrn)[0]
 254     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 255
 256     # attempt to use delegated credential first
 257     credential = api.getDelegatedCredential(creds)
 258     if not credential:
 259         credential = api.getCredential()
 260     threads = ThreadManager()
 261     for aggregate in api.aggregates:
 262         # prevent infinite loop. Dont send request back to caller
 263         # unless the caller is the aggregate's SM
 264         if caller_hrn == aggregate and aggregate != api.hrn:
 265             continue
 266         server = api.aggregates[aggregate]
 267         threads.run(_DeleteSliver, server, xrn, credential, call_id)
 268     threads.get_results()
 269     return 1
 270
 271
 272 # first draft at a merging SliverStatus
 273 def SliverStatus(api, slice_xrn, creds, call_id):
 274     def _SliverStatus(server, xrn, creds, call_id):
 275         server_version = _get_server_version(api, server)
 276         args =  [xrn, creds]
 277         if _call_id_supported(api, server):
 278             args.append(call_id)
 279         return server.SliverStatus(*args)
 280
 281     if Callids().already_handled(call_id): return {}
 282     # attempt to use delegated credential first
 283     credential = api.getDelegatedCredential(creds)
 284     if not credential:
 285         credential = api.getCredential()
 286     threads = ThreadManager()
 287     for aggregate in api.aggregates:
 288         server = api.aggregates[aggregate]
 289         threads.run (_SliverStatus, server, slice_xrn, credential, call_id)
 290     results = threads.get_results()
 291
 292     # get rid of any void result - e.g. when call_id was hit where by convention we return {}
 293     results = [ result for result in results if result and result['geni_resources']]
 294
 295     # do not try to combine if there's no result
 296     if not results : return {}
 297
 298     # otherwise let's merge stuff
 299     overall = {}
 300
 301     # mmh, it is expected that all results carry the same urn
 302     overall['geni_urn'] = results[0]['geni_urn']
 303     overall['pl_login'] = results[0]['pl_login']
 304     # append all geni_resources
 305     overall['geni_resources'] = \
 306         reduce (lambda x,y: x+y, [ result['geni_resources'] for result in results] , [])
 307     overall['status'] = 'unknown'
 308     if overall['geni_resources']:
 309         overall['status'] = 'ready'
 310
 311     return overall
 312
 313 caching=True
 314 #caching=False
 315 def ListSlices(api, creds, call_id):
 316     def _ListSlices(server, creds, call_id):
 317         server_version = _get_server_version(api, server)
 318         args =  [creds]
 319         if _call_id_supported(api, server):
 320             args.append(call_id)
 321         return server.ListSlices(*args)
 322
 323     if Callids().already_handled(call_id): return []
 324
 325     # look in cache first
 326     if caching and api.cache:
 327         slices = api.cache.get('slices')
 328         if slices:
 329             return slices
 330
 331     # get the callers hrn
 332     valid_cred = api.auth.checkCredentials(creds, 'listslices', None)[0]
 333     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 334
 335     # attempt to use delegated credential first
 336     credential = api.getDelegatedCredential(creds)
 337     if not credential:
 338         credential = api.getCredential()
 339     threads = ThreadManager()
 340     # fetch from aggregates
 341     for aggregate in api.aggregates:
 342         # prevent infinite loop. Dont send request back to caller
 343         # unless the caller is the aggregate's SM
 344         if caller_hrn == aggregate and aggregate != api.hrn:
 345             continue
 346         server = api.aggregates[aggregate]
 347         threads.run(_ListSlices, server, credential, call_id)
 348
 349     # combime results
 350     results = threads.get_results()
 351     slices = []
 352     for result in results:
 353         slices.extend(result)
 354
 355     # cache the result
 356     if caching and api.cache:
 357         api.cache.add('slices', slices)
 358
 359     return slices
 360
 361
 362 def get_ticket(api, xrn, creds, rspec, users):
 363     slice_hrn, type = urn_to_hrn(xrn)
 364     # get the netspecs contained within the clients rspec
 365     aggregate_rspecs = {}
 366     tree= etree.parse(StringIO(rspec))
 367     elements = tree.findall('./network')
 368     for element in elements:
 369         aggregate_hrn = element.values()[0]
 370         aggregate_rspecs[aggregate_hrn] = rspec
 371
 372     # get the callers hrn
 373     valid_cred = api.auth.checkCredentials(creds, 'getticket', slice_hrn)[0]
 374     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 375
 376     # attempt to use delegated credential first
 377     credential = api.getDelegatedCredential(creds)
 378     if not credential:
 379         credential = api.getCredential()
 380     threads = ThreadManager()
 381     for (aggregate, aggregate_rspec) in aggregate_rspecs.iteritems():
 382         # prevent infinite loop. Dont send request back to caller
 383         # unless the caller is the aggregate's SM
 384         if caller_hrn == aggregate and aggregate != api.hrn:
 385             continue
 386         server = None
 387         if aggregate in api.aggregates:
 388             server = api.aggregates[aggregate]
 389         else:
 390             net_urn = hrn_to_urn(aggregate, 'authority')
 391             # we may have a peer that knows about this aggregate
 392             for agg in api.aggregates:
 393                 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
 394                 if not target_aggs or not 'hrn' in target_aggs[0]:
 395                     continue
 396                 # send the request to this address
 397                 url = target_aggs[0]['url']
 398                 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
 399                 # aggregate found, no need to keep looping
 400                 break
 401         if server is None:
 402             continue
 403         threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
 404
 405     results = threads.get_results()
 406
 407     # gather information from each ticket
 408     rspecs = []
 409     initscripts = []
 410     slivers = []
 411     object_gid = None
 412     for result in results:
 413         agg_ticket = SfaTicket(string=result)
 414         attrs = agg_ticket.get_attributes()
 415         if not object_gid:
 416             object_gid = agg_ticket.get_gid_object()
 417         rspecs.append(agg_ticket.get_rspec())
 418         initscripts.extend(attrs.get('initscripts', []))
 419         slivers.extend(attrs.get('slivers', []))
 420
 421     # merge info
 422     attributes = {'initscripts': initscripts,
 423                  'slivers': slivers}
 424     merged_rspec = merge_rspecs(rspecs)
 425
 426     # create a new ticket
 427     ticket = SfaTicket(subject = slice_hrn)
 428     ticket.set_gid_caller(api.auth.client_gid)
 429     ticket.set_issuer(key=api.key, subject=api.hrn)
 430     ticket.set_gid_object(object_gid)
 431     ticket.set_pubkey(object_gid.get_pubkey())
 432     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 433     ticket.set_attributes(attributes)
 434     ticket.set_rspec(merged_rspec)
 435     ticket.encode()
 436     ticket.sign()
 437     return ticket.save_to_string(save_parents=True)
 438
 439 def start_slice(api, xrn, creds):
 440     hrn, type = urn_to_hrn(xrn)
 441
 442     # get the callers hrn
 443     valid_cred = api.auth.checkCredentials(creds, 'startslice', hrn)[0]
 444     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 445
 446     # attempt to use delegated credential first
 447     credential = api.getDelegatedCredential(creds)
 448     if not credential:
 449         credential = api.getCredential()
 450     threads = ThreadManager()
 451     for aggregate in api.aggregates:
 452         # prevent infinite loop. Dont send request back to caller
 453         # unless the caller is the aggregate's SM
 454         if caller_hrn == aggregate and aggregate != api.hrn:
 455             continue
 456         server = api.aggregates[aggregate]
 457         threads.run(server.Start, xrn, credential)
 458     threads.get_results()
 459     return 1
 460
 461 def stop_slice(api, xrn, creds):
 462     hrn, type = urn_to_hrn(xrn)
 463
 464     # get the callers hrn
 465     valid_cred = api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
 466     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 467
 468     # attempt to use delegated credential first
 469     credential = api.getDelegatedCredential(creds)
 470     if not credential:
 471         credential = api.getCredential()
 472     threads = ThreadManager()
 473     for aggregate in api.aggregates:
 474         # prevent infinite loop. Dont send request back to caller
 475         # unless the caller is the aggregate's SM
 476         if caller_hrn == aggregate and aggregate != api.hrn:
 477             continue
 478         server = api.aggregates[aggregate]
 479         threads.run(server.Stop, xrn, credential)
 480     threads.get_results()
 481     return 1
 482
 483 def reset_slice(api, xrn):
 484     """
 485     Not implemented
 486     """
 487     return 1
 488
 489 def shutdown(api, xrn, creds):
 490     """
 491     Not implemented
 492     """
 493     return 1
 494
 495 def status(api, xrn, creds):
 496     """
 497     Not implemented
 498     """
 499     return 1
 500
 501 def main():
 502     r = RSpec()
 503     r.parseFile(sys.argv[1])
 504     rspec = r.toDict()
 505     CreateSliver(None,'plc.princeton.tmacktestslice',rspec,'create-slice-tmacktestslice')
 506
 507 if __name__ == "__main__":
 508     main()
 509