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     version['sfa'] = 1
  31     return version
  32
  33 def slice_status(api, slice_xrn, creds ):
  34     result = {}
  35     result['geni_urn'] = slice_xrn
  36     result['geni_status'] = 'unknown'
  37     result['geni_resources'] = {}
  38     return result
  39
  40 def create_slice(api, xrn, creds, rspec, users):
  41     hrn, type = urn_to_hrn(xrn)
  42
  43     # Validate the RSpec against PlanetLab's schema --disabled for now
  44     # The schema used here needs to aggregate the PL and VINI schemas
  45     # schema = "/var/www/html/schemas/pl.rng"
  46     schema = None
  47     if schema:
  48         try:
  49             tree = etree.parse(StringIO(rspec))
  50         except etree.XMLSyntaxError:
  51             message = str(sys.exc_info()[1])
  52             raise InvalidRSpec(message)
  53
  54         relaxng_doc = etree.parse(schema)
  55         relaxng = etree.RelaxNG(relaxng_doc)
  56
  57         if not relaxng(tree):
  58             error = relaxng.error_log.last_error
  59             message = "%s (line %s)" % (error.message, error.line)
  60             raise InvalidRSpec(message)
  61
  62     # XX
  63     # XX TODO: Should try to use delegated credential first
  64     # XX
  65     cred = api.getCredential()
  66     threads = ThreadManager()
  67     for aggregate in api.aggregates:
  68         if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
  69             server = api.aggregates[aggregate]
  70             # Just send entire RSpec to each aggregate
  71             threads.run(server.CreateSliver, xrn, cred, rspec, users)
  72
  73     results = threads.get_results()
  74     merged_rspec = merge_rspecs(results)
  75     return merged_rspec
  76
  77 def renew_slice(api, xrn, creds, expiration_time):
  78     # XX
  79     # XX TODO: Should try to use delegated credential first
  80     # XX
  81     credential = api.getCredential()
  82     threads = ThreadManager()
  83     for aggregate in api.aggregates:
  84         server = api.aggregates[aggregate]
  85         threads.run(server.RenewSliver, xrn, credential, expiration_time)
  86     threads.get_results()
  87     return 1
  88
  89 def get_ticket(api, xrn, creds, rspec, users):
  90     slice_hrn, type = urn_to_hrn(xrn)
  91     # get the netspecs contained within the clients rspec
  92     aggregate_rspecs = {}
  93     tree= etree.parse(StringIO(rspec))
  94     elements = tree.findall('./network')
  95     for element in elements:
  96         aggregate_hrn = element.values()[0]
  97         aggregate_rspecs[aggregate_hrn] = rspec
  98
  99     # get a ticket from each aggregate
 100     credential = api.getCredential()
 101     threads = ThreadManager()
 102     for aggregate, aggregate_rspec in aggregate_rspecs.items():
 103         server = None
 104         if aggregate in api.aggregates:
 105             server = api.aggregates[aggregate]
 106         else:
 107             net_urn = hrn_to_urn(aggregate, 'authority')
 108             # we may have a peer that knows about this aggregate
 109             for agg in api.aggregates:
 110                 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
 111                 if not target_aggs or not 'hrn' not target_aggs[0]:
 112                     continue
 113                 # send the request to this address
 114                 url = target_aggs[0]['url']
 115                 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
 116                 # aggregate found, no need to keep looping
 117                 break
 118         if server is None:
 119             continue
 120         threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
 121
 122     results = threads.get_results()
 123
 124     # gather information from each ticket
 125     rspecs = []
 126     initscripts = []
 127     slivers = []
 128     object_gid = None
 129     for result in results:
 130         agg_ticket = SfaTicket(string=result)
 131         attrs = agg_ticket.get_attributes()
 132         if not object_gid:
 133             object_gid = agg_ticket.get_gid_object()
 134         rspecs.append(agg_ticket.get_rspec())
 135         initscripts.extend(attrs.get('initscripts', []))
 136         slivers.extend(attrs.get('slivers', []))
 137
 138     # merge info
 139     attributes = {'initscripts': initscripts,
 140                  'slivers': slivers}
 141     merged_rspec = merge_rspecs(rspecs)
 142
 143     # create a new ticket
 144     ticket = SfaTicket(subject = slice_hrn)
 145     ticket.set_gid_caller(api.auth.client_gid)
 146     ticket.set_issuer(key=api.key, subject=api.hrn)
 147     ticket.set_gid_object(object_gid)
 148     ticket.set_pubkey(object_gid.get_pubkey())
 149     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 150     ticket.set_attributes(attributes)
 151     ticket.set_rspec(merged_rspec)
 152     ticket.encode()
 153     ticket.sign()
 154     return ticket.save_to_string(save_parents=True)
 155
 156
 157 def delete_slice(api, xrn, origin_hrn=None):
 158     # XX
 159     # XX TODO: Should try to use delegated credential first
 160     # XX
 161     credential = api.getCredential()
 162     threads = ThreadManager()
 163     for aggregate in api.aggregates:
 164         server = api.aggregates[aggregate]
 165         threads.run(server.DeleteSliver, xrn, credential)
 166     threads.get_results()
 167     return 1
 168
 169 def start_slice(api, xrn, creds):
 170     # XX
 171     # XX TODO: Should try to use delegated credential first
 172     # XX
 173     credential = api.getCredential()
 174     threads = ThreadManager()
 175     for aggregate in api.aggregates:
 176         server = api.aggregates[aggregate]
 177         threads.run(server.Start, xrn, credential)
 178     threads.get_results()
 179     return 1
 180
 181 def stop_slice(api, xrn, creds):
 182     # XX
 183     # XX TODO: Should try to use delegated credential first
 184     # XX
 185     credential = api.getCredential()
 186     threads = ThreadManager()
 187     for aggregate in api.aggregates:
 188         server = api.aggregates[aggregate]
 189         threads.run(server.Stop, xrn, credential)
 190     threads.get_results()
 191     return 1
 192
 193 def reset_slice(api, xrn):
 194     """
 195     Not implemented
 196     """
 197     return 1
 198
 199 def shutdown(api, xrn, creds):
 200     """
 201     Not implemented
 202     """
 203     return 1
 204
 205 def status(api, xrn, creds):
 206     """
 207     Not implemented
 208     """
 209     return 1
 210
 211 def get_slices(api, creds):
 212     # look in cache first
 213     if api.cache:
 214         slices = api.cache.get('slices')
 215         if slices:
 216             return slices
 217
 218     # fetch from aggregates
 219     slices = []
 220     credential = api.getCredential()
 221     threads = ThreadManager()
 222     for aggregate in api.aggregates:
 223         server = api.aggregates[aggregate]
 224         threads.run(server.ListSlices, credential)
 225
 226     # combime results
 227     results = threads.get_results()
 228     slices = []
 229     for result in results:
 230         slices.extend(result)
 231
 232     # cache the result
 233     if api.cache:
 234         api.cache.add('slices', slices)
 235
 236     return slices
 237
 238 def get_rspec(api, creds, options):
 239     # get slice's hrn from options
 240     xrn = options.get('geni_slice_urn', None)
 241     hrn, type = urn_to_hrn(xrn)
 242
 243     # get hrn of the original caller
 244     origin_hrn = options.get('origin_hrn', None)
 245     if not origin_hrn:
 246         origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
 247
 248     # look in cache first
 249     if api.cache and not xrn:
 250         rspec =  api.cache.get('nodes')
 251         if rspec:
 252             return rspec
 253
 254     hrn, type = urn_to_hrn(xrn)
 255     rspec = None
 256     # XX
 257     # XX TODO: Should try to use delegated credential first
 258     # XX
 259     cred = api.getCredential()
 260     threads = ThreadManager()
 261
 262     for aggregate in api.aggregates:
 263         if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
 264             # get the rspec from the aggregate
 265             server = api.aggregates[aggregate]
 266             threads.run(server.ListResources, cred, options)
 267             #threads.run(server.get_resources, cred, xrn, origin_hrn)
 268
 269
 270     results = threads.get_results()
 271     # combine the rspecs into a single rspec
 272     for agg_rspec in results:
 273         try:
 274             tree = etree.parse(StringIO(agg_rspec))
 275         except etree.XMLSyntaxError:
 276             message = str(agg_rspec) + ": " + str(sys.exc_info()[1])
 277             raise InvalidRSpec(message)
 278
 279         root = tree.getroot()
 280         if root.get("type") in ["SFA"]:
 281             if rspec == None:
 282                 rspec = root
 283             else:
 284                 for network in root.iterfind("./network"):
 285                     rspec.append(deepcopy(network))
 286                 for request in root.iterfind("./request"):
 287                     rspec.append(deepcopy(request))
 288
 289     rspec =  etree.tostring(rspec, xml_declaration=True, pretty_print=True)
 290     # cache the result
 291     if api.cache and not xrn:
 292         api.cache.add('nodes', rspec)
 293
 294     return rspec
 295
 296 def main():
 297     r = RSpec()
 298     r.parseFile(sys.argv[1])
 299     rspec = r.toDict()
 300     create_slice(None,'plc.princeton.tmacktestslice',rspec)
 301
 302 if __name__ == "__main__":
 303     main()
 304