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