sfa/managers/slice_manager_pl.py

   1 ### $Id: slices.py 15842 2009-11-22 09:56:13Z anil $
   2 ### $URL: https://svn.planet-lab.org/svn/sfa/trunk/sfa/plc/slices.py $
   3
   4 import datetime
   5 import time
   6 import traceback
   7 import sys
   8 from copy import deepcopy
   9 from lxml import etree
  10 from StringIO import StringIO
  11 from types import StringTypes
  12 from sfa.util.rspecHelper import merge_rspecs
  13 from sfa.util.namespace import *
  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.util.policy import Policy
  19 from sfa.util.prefixTree import prefixTree
  20 from sfa.util.sfaticket import *
  21 from sfa.trust.credential import Credential
  22 from sfa.util.threadmanager import ThreadManager
  23 import sfa.util.xmlrpcprotocol as xmlrpcprotocol
  24 from sfa.util.debug import log
  25 import sfa.plc.peers as peers
  26
  27 def get_version():
  28     version = {}
  29     version['geni_api'] = 1
  30     return version
  31
  32 def slice_status(api, slice_xrn, creds ):
  33     result = {}
  34     result['geni_urn'] = slice_xrn
  35     result['geni_status'] = 'unknown'
  36     result['geni_resources'] = {}
  37     return result
  38
  39 def create_slice(api, xrn, creds, rspec, users):
  40     hrn, type = urn_to_hrn(xrn)
  41
  42     # Validate the RSpec against PlanetLab's schema --disabled for now
  43     # The schema used here needs to aggregate the PL and VINI schemas
  44     # schema = "/var/www/html/schemas/pl.rng"
  45     schema = None
  46     if schema:
  47         try:
  48             tree = etree.parse(StringIO(rspec))
  49         except etree.XMLSyntaxError:
  50             message = str(sys.exc_info()[1])
  51             raise InvalidRSpec(message)
  52
  53         relaxng_doc = etree.parse(schema)
  54         relaxng = etree.RelaxNG(relaxng_doc)
  55
  56         if not relaxng(tree):
  57             error = relaxng.error_log.last_error
  58             message = "%s (line %s)" % (error.message, error.line)
  59             raise InvalidRSpec(message)
  60
  61     # XX
  62     # XX TODO: Should try to use delegated credential first
  63     # XX
  64     cred = api.getCredential()
  65     threads = ThreadManager()
  66     for aggregate in api.aggregates:
  67         if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
  68             server = api.aggregates[aggregate]
  69             # Just send entire RSpec to each aggregate
  70             threads.run(server.CreateSliver, xrn, cred, rspec, users)
  71
  72     results = threads.get_results()
  73     merged_rspec = merge_rspecs(results)
  74     return merged_rspec
  75
  76 def renew_slice(api, xrn, creds, expiration_time):
  77     # XX
  78     # XX TODO: Should try to use delegated credential first
  79     # XX
  80     credential = api.getCredential()
  81     threads = ThreadManager()
  82     for aggregate in api.aggregates:
  83         server = api.aggregates[aggregate]
  84         threads.run(server.RenewSliver, xrn, credential, expiration_time)
  85     threads.get_results()
  86     return 1
  87
  88 def get_ticket(api, xrn, creds, rspec, users):
  89     slice_hrn, type = urn_to_hrn(xrn)
  90     # get the netspecs contained within the clients rspec
  91     aggregate_rspecs = {}
  92     tree= etree.parse(StringIO(rspec))
  93     elements = tree.findall('./network')
  94     for element in elements:
  95         aggregate_hrn = element.values()[0]
  96         aggregate_rspecs[aggregate_hrn] = rspec
  97
  98     # get a ticket from each aggregate
  99     credential = api.getCredential()
 100     threads = ThreadManager()
 101     for aggregate, aggregate_rspec in aggregate_rspecs.items():
 102         server = None
 103         if aggregate in api.aggregates:
 104             server = api.aggregates[aggregate]
 105         else:
 106             net_urn = hrn_to_urn(aggregate, 'authority')
 107             # we may have a peer that knows about this aggregate
 108             for agg in api.aggregates:
 109                 agg_info = api.aggregates[agg].get_aggregates(credential, net_urn)
 110                 if agg_info:
 111                     # send the request to this address
 112                     url = 'http://%s:%s' % (agg_info['addr'], agg_info['port'])
 113                     server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
 114                     break
 115         if server is None:
 116             continue
 117         threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
 118
 119     results = threads.get_results()
 120
 121     # gather information from each ticket
 122     rspecs = []
 123     initscripts = []
 124     slivers = []
 125     object_gid = None
 126     for result in results:
 127         agg_ticket = SfaTicket(string=result)
 128         attrs = agg_ticket.get_attributes()
 129         if not object_gid:
 130             object_gid = agg_ticket.get_gid_object()
 131         rspecs.append(agg_ticket.get_rspec())
 132         initscripts.extend(attrs.get('initscripts', []))
 133         slivers.extend(attrs.get('slivers', []))
 134
 135     # merge info
 136     attributes = {'initscripts': initscripts,
 137                  'slivers': slivers}
 138     merged_rspec = merge_rspecs(rspecs)
 139
 140     # create a new ticket
 141     ticket = SfaTicket(subject = slice_hrn)
 142     ticket.set_gid_caller(api.auth.client_gid)
 143     ticket.set_issuer(key=api.key, subject=api.hrn)
 144     ticket.set_gid_object(object_gid)
 145     ticket.set_pubkey(object_gid.get_pubkey())
 146     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 147     ticket.set_attributes(attributes)
 148     ticket.set_rspec(merged_rspec)
 149     ticket.encode()
 150     ticket.sign()
 151     return ticket.save_to_string(save_parents=True)
 152
 153
 154 def delete_slice(api, xrn, origin_hrn=None):
 155     # XX
 156     # XX TODO: Should try to use delegated credential first
 157     # XX
 158     credential = api.getCredential()
 159     threads = ThreadManager()
 160     for aggregate in api.aggregates:
 161         server = api.aggregates[aggregate]
 162         threads.run(server.DeleteSliver, xrn, credential)
 163     threads.get_results()
 164     return 1
 165
 166 def start_slice(api, xrn, creds):
 167     # XX
 168     # XX TODO: Should try to use delegated credential first
 169     # XX
 170     credential = api.getCredential()
 171     threads = ThreadManager()
 172     for aggregate in api.aggregates:
 173         server = api.aggregates[aggregate]
 174         threads.run(server.Start, xrn, credential)
 175     threads.get_results()
 176     return 1
 177
 178 def stop_slice(api, xrn, creds):
 179     # XX
 180     # XX TODO: Should try to use delegated credential first
 181     # XX
 182     credential = api.getCredential()
 183     threads = ThreadManager()
 184     for aggregate in api.aggregates:
 185         server = api.aggregates[aggregate]
 186         threads.run(server.Stop, xrn, credential)
 187     threads.get_results()
 188     return 1
 189
 190 def reset_slice(api, xrn):
 191     """
 192     Not implemented
 193     """
 194     return 1
 195
 196 def shutdown(api, xrn, creds):
 197     """
 198     Not implemented
 199     """
 200     return 1
 201
 202 def status(api, xrn, creds):
 203     """
 204     Not implemented
 205     """
 206     return 1
 207
 208 def get_slices(api, creds):
 209     # look in cache first
 210     if api.cache:
 211         slices = api.cache.get('slices')
 212         if slices:
 213             return slices
 214
 215     # fetch from aggregates
 216     slices = []
 217     credential = api.getCredential()
 218     threads = ThreadManager()
 219     for aggregate in api.aggregates:
 220         server = api.aggregates[aggregate]
 221         threads.run(server.ListSlices, credential)
 222
 223     # combime results
 224     results = threads.get_results()
 225     slices = []
 226     for result in results:
 227         slices.extend(result)
 228
 229     # cache the result
 230     if api.cache:
 231         api.cache.add('slices', slices)
 232
 233     return slices
 234
 235 def get_rspec(api, creds, options):
 236     # get slice's hrn from options
 237     xrn = options.get('geni_slice_urn', None)
 238     hrn, type = urn_to_hrn(xrn)
 239
 240     # get hrn of the original caller
 241     origin_hrn = options.get('origin_hrn', None)
 242     if not origin_hrn:
 243         origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
 244
 245     # look in cache first
 246     if api.cache and not xrn:
 247         rspec =  api.cache.get('nodes')
 248         if rspec:
 249             return rspec
 250
 251     hrn, type = urn_to_hrn(xrn)
 252     rspec = None
 253     # XX
 254     # XX TODO: Should try to use delegated credential first
 255     # XX
 256     cred = api.getCredential()
 257     threads = ThreadManager()
 258
 259     for aggregate in api.aggregates:
 260         if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
 261             # get the rspec from the aggregate
 262             server = api.aggregates[aggregate]
 263             threads.run(server.ListResources, cred, options)
 264             #threads.run(server.get_resources, cred, xrn, origin_hrn)
 265
 266
 267     results = threads.get_results()
 268     # combine the rspecs into a single rspec
 269     for agg_rspec in results:
 270         try:
 271             tree = etree.parse(StringIO(agg_rspec))
 272         except etree.XMLSyntaxError:
 273             message = str(agg_rspec) + ": " + str(sys.exc_info()[1])
 274             raise InvalidRSpec(message)
 275
 276         root = tree.getroot()
 277         if root.get("type") in ["SFA"]:
 278             if rspec == None:
 279                 rspec = root
 280             else:
 281                 for network in root.iterfind("./network"):
 282                     rspec.append(deepcopy(network))
 283                 for request in root.iterfind("./request"):
 284                     rspec.append(deepcopy(request))
 285
 286     rspec =  etree.tostring(rspec, xml_declaration=True, pretty_print=True)
 287     # cache the result
 288     if api.cache and not xrn:
 289         api.cache.add('nodes', rspec)
 290
 291     return rspec
 292
 293 def main():
 294     r = RSpec()
 295     r.parseFile(sys.argv[1])
 296     rspec = r.toDict()
 297     create_slice(None,'plc.princeton.tmacktestslice',rspec)
 298
 299 if __name__ == "__main__":
 300     main()
 301