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 sfa_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.rspec import *
  14 from sfa.util.specdict import *
  15 from sfa.util.faults import *
  16 from sfa.util.record import SfaRecord
  17 from sfa.util.policy import Policy
  18 from sfa.util.prefixTree import prefixTree
  19 from sfa.util.sfaticket import *
  20 from sfa.trust.credential import Credential
  21 from sfa.util.threadmanager import ThreadManager
  22 import sfa.util.xmlrpcprotocol as xmlrpcprotocol
  23 import sfa.plc.peers as peers
  24 from sfa.util.version import version_core
  25
  26 def GetVersion(api):
  27     peers =dict ([ (peername,v._ServerProxy__host) for (peername,v) in api.aggregates.items()
  28                    if peername != api.hrn])
  29     xrn=Xrn (api.hrn)
  30     return version_core({'interface':'slicemgr',
  31                          'hrn' : xrn.get_hrn(),
  32                          'urn' : xrn.get_urn(),
  33                          'peers': peers,
  34                          })
  35
  36 def slice_status(api, slice_xrn, creds ):
  37     hrn, type = urn_to_hrn(slice_xrn)
  38     # find out where this slice is currently running
  39     api.logger.info(hrn)
  40     slicename = hrn_to_pl_slicename(hrn)
  41     api.logger.info("Checking status for %s" % slicename)
  42     slices = api.plshell.GetSlices(api.plauth, [slicename], ['node_ids','person_ids','name','expires'])
  43     if len(slices) == 0:
  44         raise Exception("Slice %s not found (used %s as slicename internally)" % (slice_xrn, slicename))
  45     slice = slices[0]
  46
  47     nodes = api.plshell.GetNodes(api.plauth, slice['node_ids'],
  48                                     ['hostname', 'boot_state', 'last_contact'])
  49     api.logger.info(slice)
  50     api.logger.info(nodes)
  51
  52     result = {}
  53     result['geni_urn'] = slice_xrn
  54     result['geni_status'] = 'unknown'
  55     result['pl_login'] = slice['name']
  56     result['pl_expires'] = slice['expires']
  57
  58     resources = []
  59
  60     for node in nodes:
  61         res = {}
  62         res['pl_hostname'] = node['hostname']
  63         res['pl_boot_state'] = node['boot_state']
  64         res['pl_last_contact'] = node['last_contact']
  65         res['geni_urn'] = ''
  66         res['geni_status'] = 'unknown'
  67         res['geni_error'] = ''
  68
  69         resources.append(res)
  70
  71     result['geni_resources'] = resources
  72     return result
  73
  74 def create_slice(api, xrn, creds, rspec, users):
  75     hrn, type = urn_to_hrn(xrn)
  76
  77     # Validate the RSpec against PlanetLab's schema --disabled for now
  78     # The schema used here needs to aggregate the PL and VINI schemas
  79     # schema = "/var/www/html/schemas/pl.rng"
  80     schema = None
  81     if schema:
  82         try:
  83             tree = etree.parse(StringIO(rspec))
  84         except etree.XMLSyntaxError:
  85             message = str(sys.exc_info()[1])
  86             raise InvalidRSpec(message)
  87
  88         relaxng_doc = etree.parse(schema)
  89         relaxng = etree.RelaxNG(relaxng_doc)
  90
  91         if not relaxng(tree):
  92             error = relaxng.error_log.last_error
  93             message = "%s (line %s)" % (error.message, error.line)
  94             raise InvalidRSpec(message)
  95
  96     # get the callers hrn
  97     valid_cred = api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
  98     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
  99
 100     # attempt to use delegated credential first
 101     credential = api.getDelegatedCredential(creds)
 102     if not credential:
 103         credential = api.getCredential()
 104     threads = ThreadManager()
 105     for aggregate in api.aggregates:
 106         # prevent infinite loop. Dont send request back to caller
 107         # unless the caller is the aggregate's SM
 108         if caller_hrn == aggregate and aggregate != api.hrn:
 109             continue
 110
 111         # Just send entire RSpec to each aggregate
 112         server = api.aggregates[aggregate]
 113         threads.run(server.CreateSliver, xrn, credential, rspec, users)
 114
 115     results = threads.get_results()
 116     merged_rspec = merge_rspecs(results)
 117     return merged_rspec
 118
 119 def renew_slice(api, xrn, creds, expiration_time):
 120     hrn, type = urn_to_hrn(xrn)
 121
 122     # get the callers hrn
 123     valid_cred = api.auth.checkCredentials(creds, 'renewesliver', hrn)[0]
 124     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 125
 126     # attempt to use delegated credential first
 127     credential = api.getDelegatedCredential(creds)
 128     if not credential:
 129         credential = api.getCredential()
 130     threads = ThreadManager()
 131     for aggregate in api.aggregates:
 132         # prevent infinite loop. Dont send request back to caller
 133         # unless the caller is the aggregate's SM
 134         if caller_hrn == aggregate and aggregate != api.hrn:
 135             continue
 136
 137         server = api.aggregates[aggregate]
 138         threads.run(server.RenewSliver, xrn, credential, expiration_time)
 139     threads.get_results()
 140     return 1
 141
 142 def get_ticket(api, xrn, creds, rspec, users):
 143     slice_hrn, type = urn_to_hrn(xrn)
 144     # get the netspecs contained within the clients rspec
 145     aggregate_rspecs = {}
 146     tree= etree.parse(StringIO(rspec))
 147     elements = tree.findall('./network')
 148     for element in elements:
 149         aggregate_hrn = element.values()[0]
 150         aggregate_rspecs[aggregate_hrn] = rspec
 151
 152     # get the callers hrn
 153     valid_cred = api.auth.checkCredentials(creds, 'getticket', slice_hrn)[0]
 154     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 155
 156     # attempt to use delegated credential first
 157     credential = api.getDelegatedCredential(creds)
 158     if not credential:
 159         credential = api.getCredential()
 160     threads = ThreadManager()
 161     for aggregate, aggregate_rspec in aggregate_rspecs.items():
 162         # prevent infinite loop. Dont send request back to caller
 163         # unless the caller is the aggregate's SM
 164         if caller_hrn == aggregate and aggregate != api.hrn:
 165             continue
 166         server = None
 167         if aggregate in api.aggregates:
 168             server = api.aggregates[aggregate]
 169         else:
 170             net_urn = hrn_to_urn(aggregate, 'authority')
 171             # we may have a peer that knows about this aggregate
 172             for agg in api.aggregates:
 173                 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
 174                 if not target_aggs or not 'hrn' in target_aggs[0]:
 175                     continue
 176                 # send the request to this address
 177                 url = target_aggs[0]['url']
 178                 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
 179                 # aggregate found, no need to keep looping
 180                 break
 181         if server is None:
 182             continue
 183         threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
 184
 185     results = threads.get_results()
 186
 187     # gather information from each ticket
 188     rspecs = []
 189     initscripts = []
 190     slivers = []
 191     object_gid = None
 192     for result in results:
 193         agg_ticket = SfaTicket(string=result)
 194         attrs = agg_ticket.get_attributes()
 195         if not object_gid:
 196             object_gid = agg_ticket.get_gid_object()
 197         rspecs.append(agg_ticket.get_rspec())
 198         initscripts.extend(attrs.get('initscripts', []))
 199         slivers.extend(attrs.get('slivers', []))
 200
 201     # merge info
 202     attributes = {'initscripts': initscripts,
 203                  'slivers': slivers}
 204     merged_rspec = merge_rspecs(rspecs)
 205
 206     # create a new ticket
 207     ticket = SfaTicket(subject = slice_hrn)
 208     ticket.set_gid_caller(api.auth.client_gid)
 209     ticket.set_issuer(key=api.key, subject=api.hrn)
 210     ticket.set_gid_object(object_gid)
 211     ticket.set_pubkey(object_gid.get_pubkey())
 212     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 213     ticket.set_attributes(attributes)
 214     ticket.set_rspec(merged_rspec)
 215     ticket.encode()
 216     ticket.sign()
 217     return ticket.save_to_string(save_parents=True)
 218
 219
 220 def delete_slice(api, xrn, creds):
 221     hrn, type = urn_to_hrn(xrn)
 222
 223     # get the callers hrn
 224     valid_cred = api.auth.checkCredentials(creds, 'deletesliver', 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(server.DeleteSliver, xrn, credential)
 239     threads.get_results()
 240     return 1
 241
 242 def start_slice(api, xrn, creds):
 243     hrn, type = urn_to_hrn(xrn)
 244
 245     # get the callers hrn
 246     valid_cred = api.auth.checkCredentials(creds, 'startslice', hrn)[0]
 247     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 248
 249     # attempt to use delegated credential first
 250     credential = api.getDelegatedCredential(creds)
 251     if not credential:
 252         credential = api.getCredential()
 253     threads = ThreadManager()
 254     for aggregate in api.aggregates:
 255         # prevent infinite loop. Dont send request back to caller
 256         # unless the caller is the aggregate's SM
 257         if caller_hrn == aggregate and aggregate != api.hrn:
 258             continue
 259         server = api.aggregates[aggregate]
 260         threads.run(server.Start, xrn, credential)
 261     threads.get_results()
 262     return 1
 263
 264 def stop_slice(api, xrn, creds):
 265     hrn, type = urn_to_hrn(xrn)
 266
 267     # get the callers hrn
 268     valid_cred = api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
 269     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 270
 271     # attempt to use delegated credential first
 272     credential = api.getDelegatedCredential(creds)
 273     if not credential:
 274         credential = api.getCredential()
 275     threads = ThreadManager()
 276     for aggregate in api.aggregates:
 277         # prevent infinite loop. Dont send request back to caller
 278         # unless the caller is the aggregate's SM
 279         if caller_hrn == aggregate and aggregate != api.hrn:
 280             continue
 281         server = api.aggregates[aggregate]
 282         threads.run(server.Stop, xrn, credential)
 283     threads.get_results()
 284     return 1
 285
 286 def reset_slice(api, xrn):
 287     """
 288     Not implemented
 289     """
 290     return 1
 291
 292 def shutdown(api, xrn, creds):
 293     """
 294     Not implemented
 295     """
 296     return 1
 297
 298 def status(api, xrn, creds):
 299     """
 300     Not implemented
 301     """
 302     return 1
 303
 304 def get_slices(api, creds):
 305
 306     # look in cache first
 307     if api.cache:
 308         slices = api.cache.get('slices')
 309         if slices:
 310             return slices
 311
 312     # get the callers hrn
 313     valid_cred = api.auth.checkCredentials(creds, 'listslices', None)[0]
 314     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 315
 316     # attempt to use delegated credential first
 317     credential = api.getDelegatedCredential(creds)
 318     if not credential:
 319         credential = api.getCredential()
 320     threads = ThreadManager()
 321     # fetch from aggregates
 322     for aggregate in api.aggregates:
 323         # prevent infinite loop. Dont send request back to caller
 324         # unless the caller is the aggregate's SM
 325         if caller_hrn == aggregate and aggregate != api.hrn:
 326             continue
 327         server = api.aggregates[aggregate]
 328         threads.run(server.ListSlices, credential)
 329
 330     # combime results
 331     results = threads.get_results()
 332     slices = []
 333     for result in results:
 334         slices.extend(result)
 335
 336     # cache the result
 337     if api.cache:
 338         api.cache.add('slices', slices)
 339
 340     return slices
 341
 342 def get_rspec(api, creds, options):
 343
 344     # get slice's hrn from options
 345     xrn = options.get('geni_slice_urn', '')
 346     hrn, type = urn_to_hrn(xrn)
 347
 348     # get hrn of the original caller
 349     origin_hrn = options.get('origin_hrn', None)
 350     if not origin_hrn:
 351         origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
 352
 353     # look in cache first
 354     if api.cache and not xrn:
 355         rspec =  api.cache.get('nodes')
 356         if rspec:
 357             return rspec
 358
 359     hrn, type = urn_to_hrn(xrn)
 360     rspec = None
 361
 362     # get the callers hrn
 363     valid_cred = api.auth.checkCredentials(creds, 'listnodes', hrn)[0]
 364     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 365
 366     # attempt to use delegated credential first
 367     credential = api.getDelegatedCredential(creds)
 368     if not credential:
 369         credential = api.getCredential()
 370     threads = ThreadManager()
 371     for aggregate in api.aggregates:
 372         # prevent infinite loop. Dont send request back to caller
 373         # unless the caller is the aggregate's SM
 374         if caller_hrn == aggregate and aggregate != api.hrn:
 375             continue
 376         # get the rspec from the aggregate
 377         server = api.aggregates[aggregate]
 378         my_opts = copy(options)
 379         my_opts['geni_compressed'] = False
 380         threads.run(server.ListResources, credential, my_opts)
 381         #threads.run(server.get_resources, cred, xrn, origin_hrn)
 382
 383     results = threads.get_results()
 384     # combine the rspecs into a single rspec
 385     for agg_rspec in results:
 386         try:
 387             tree = etree.parse(StringIO(agg_rspec))
 388         except etree.XMLSyntaxError:
 389             message = str(agg_rspec) + ": " + str(sys.exc_info()[1])
 390             raise InvalidRSpec(message)
 391
 392         root = tree.getroot()
 393         if root.get("type") in ["SFA"]:
 394             if rspec == None:
 395                 rspec = root
 396             else:
 397                 for network in root.iterfind("./network"):
 398                     rspec.append(deepcopy(network))
 399                 for request in root.iterfind("./request"):
 400                     rspec.append(deepcopy(request))
 401
 402     sfa_logger().debug('get_rspec: rspec=%r'%rspec)
 403     rspec =  etree.tostring(rspec, xml_declaration=True, pretty_print=True)
 404     # cache the result
 405     if api.cache and not xrn:
 406         api.cache.add('nodes', rspec)
 407
 408     return rspec
 409
 410 def main():
 411     r = RSpec()
 412     r.parseFile(sys.argv[1])
 413     rspec = r.toDict()
 414     create_slice(None,'plc.princeton.tmacktestslice',rspec)
 415
 416 if __name__ == "__main__":
 417     main()
 418