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     threads.get_results()
  73     return 1
  74
  75 def renew_slice(api, xrn, creds, expiration_time):
  76     # XX
  77     # XX TODO: Should try to use delegated credential first
  78     # XX
  79     credential = api.getCredential()
  80     threads = ThreadManager()
  81     for aggregate in api.aggregates:
  82         server = api.aggregates[aggregate]
  83         threads.run(server.RenewSliver, xrn, credential, expiration_time)
  84     threads.get_results()
  85     return 1
  86
  87 def get_ticket(api, xrn, rspec, origin_hrn=None):
  88     slice_hrn, type = urn_to_hrn(xrn)
  89     # get the netspecs contained within the clients rspec
  90     aggregate_rspecs = {}
  91     tree= etree.parse(StringIO(rspec))
  92     elements = tree.findall('./network')
  93     for element in elements:
  94         aggregate_hrn = element.values()[0]
  95         aggregate_rspecs[aggregate_hrn] = rspec
  96
  97     # get a ticket from each aggregate
  98     credential = api.getCredential()
  99     threads = ThreadManager()
 100     for aggregate, aggregate_rspec in aggregate_rspecs.items():
 101         server = None
 102         if aggregate in api.aggregates:
 103             server = api.aggregates[aggregate]
 104         else:
 105             net_urn = hrn_to_urn(aggregate, 'authority')
 106             # we may have a peer that knows about this aggregate
 107             for agg in api.aggregates:
 108                 agg_info = api.aggregates[agg].get_aggregates(credential, net_urn)
 109                 if agg_info:
 110                     # send the request to this address
 111                     url = 'http://%s:%s' % (agg_info['addr'], agg_info['port'])
 112                     server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
 113                     break
 114         if server is None:
 115             continue
 116         threads.run(server.get_ticket, credential, xrn, aggregate_rspec, origin_hrn)
 117     results = threads.get_results()
 118
 119     # gather information from each ticket
 120     rspecs = []
 121     initscripts = []
 122     slivers = []
 123     object_gid = None
 124     for result in results:
 125         agg_ticket = SfaTicket(string=result)
 126         attrs = agg_ticket.get_attributes()
 127         if not object_gid:
 128             object_gid = agg_ticket.get_gid_object()
 129         rspecs.append(agg_ticket.get_rspec())
 130         initscripts.extend(attrs.get('initscripts', []))
 131         slivers.extend(attrs.get('slivers', []))
 132
 133     # merge info
 134     attributes = {'initscripts': initscripts,
 135                  'slivers': slivers}
 136     merged_rspec = merge_rspecs(rspecs)
 137
 138     # create a new ticket
 139     ticket = SfaTicket(subject = slice_hrn)
 140     ticket.set_gid_caller(api.auth.client_gid)
 141     ticket.set_issuer(key=api.key, subject=api.hrn)
 142     ticket.set_gid_object(object_gid)
 143     ticket.set_pubkey(object_gid.get_pubkey())
 144     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 145     ticket.set_attributes(attributes)
 146     ticket.set_rspec(merged_rspec)
 147     ticket.encode()
 148     ticket.sign()
 149     return ticket.save_to_string(save_parents=True)
 150
 151
 152 def delete_slice(api, xrn, origin_hrn=None):
 153     # XX
 154     # XX TODO: Should try to use delegated credential first
 155     # XX
 156     credential = api.getCredential()
 157     threads = ThreadManager()
 158     for aggregate in api.aggregates:
 159         server = api.aggregates[aggregate]
 160         threads.run(server.DeleteSliver, xrn, credential)
 161     threads.get_results()
 162     return 1
 163
 164 def start_slice(api, xrn, creds):
 165     # XX
 166     # XX TODO: Should try to use delegated credential first
 167     # XX
 168     credential = api.getCredential()
 169     threads = ThreadManager()
 170     for aggregate in api.aggregates:
 171         server = api.aggregates[aggregate]
 172         threads.run(server.Start, xrn, credential)
 173     threads.get_results()
 174     return 1
 175
 176 def stop_slice(api, xrn, creds):
 177     # XX
 178     # XX TODO: Should try to use delegated credential first
 179     # XX
 180     credential = api.getCredential()
 181     threads = ThreadManager()
 182     for aggregate in api.aggregates:
 183         server = api.aggregates[aggregate]
 184         threads.run(server.Stop, xrn, credential)
 185     threads.get_results()
 186     return 1
 187
 188 def reset_slice(api, xrn):
 189     """
 190     Not implemented
 191     """
 192     return 1
 193
 194 def shutdown(api, xrn, creds):
 195     """
 196     Not implemented
 197     """
 198     return 1
 199
 200 def status(api, xrn, creds):
 201     """
 202     Not implemented
 203     """
 204     return 1
 205
 206 def get_slices(api, creds):
 207     # look in cache first
 208     if api.cache:
 209         slices = api.cache.get('slices')
 210         if slices:
 211             return slices
 212
 213     # fetch from aggregates
 214     slices = []
 215     credential = api.getCredential()
 216     threads = ThreadManager()
 217     for aggregate in api.aggregates:
 218         server = api.aggregates[aggregate]
 219         threads.run(server.ListSlices, credential)
 220
 221     # combime results
 222     results = threads.get_results()
 223     slices = []
 224     for result in results:
 225         slices.extend(result)
 226
 227     # cache the result
 228     if api.cache:
 229         api.cache.add('slices', slices)
 230
 231     return slices
 232
 233 def get_rspec(api, creds, options):
 234     # get slice's hrn from options
 235     xrn = options.get('geni_slice_urn', None)
 236     hrn, type = urn_to_hrn(xrn)
 237
 238     # get hrn of the original caller
 239     origin_hrn = options.get('origin_hrn', None)
 240     if not origin_hrn:
 241         origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
 242
 243     # look in cache first
 244     if api.cache and not xrn:
 245         rspec =  api.cache.get('nodes')
 246         if rspec:
 247             return rspec
 248
 249     hrn, type = urn_to_hrn(xrn)
 250     rspec = None
 251     # XX
 252     # XX TODO: Should try to use delegated credential first
 253     # XX
 254     cred = api.getCredential()
 255     threads = ThreadManager()
 256
 257     for aggregate in api.aggregates:
 258         if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
 259             # get the rspec from the aggregate
 260             server = api.aggregates[aggregate]
 261             threads.run(server.ListResources, cred, options)
 262             #threads.run(server.get_resources, cred, xrn, origin_hrn)
 263
 264
 265     results = threads.get_results()
 266     # combine the rspecs into a single rspec
 267     for agg_rspec in results:
 268         try:
 269             tree = etree.parse(StringIO(agg_rspec))
 270         except etree.XMLSyntaxError:
 271             message = str(agg_rspec) + ": " + str(sys.exc_info()[1])
 272             raise InvalidRSpec(message)
 273
 274         root = tree.getroot()
 275         if root.get("type") in ["SFA"]:
 276             if rspec == None:
 277                 rspec = root
 278             else:
 279                 for network in root.iterfind("./network"):
 280                     rspec.append(deepcopy(network))
 281                 for request in root.iterfind("./request"):
 282                     rspec.append(deepcopy(request))
 283
 284     rspec =  etree.tostring(rspec, xml_declaration=True, pretty_print=True)
 285     # cache the result
 286     if api.cache and not xrn:
 287         api.cache.add('nodes', rspec)
 288
 289     return rspec
 290
 291 def main():
 292     r = RSpec()
 293     r.parseFile(sys.argv[1])
 294     rspec = r.toDict()
 295     create_slice(None,'plc.princeton.tmacktestslice',rspec)
 296
 297 if __name__ == "__main__":
 298     main()
 299