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 $
8 from copy import deepcopy
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
29 version['geni_api'] = 1
33 def slice_status(api, slice_xrn, creds ):
35 result['geni_urn'] = slice_xrn
36 result['geni_status'] = 'unknown'
37 result['geni_resources'] = {}
40 def create_slice(api, xrn, creds, rspec, users):
41 hrn, type = urn_to_hrn(xrn)
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"
49 tree = etree.parse(StringIO(rspec))
50 except etree.XMLSyntaxError:
51 message = str(sys.exc_info()[1])
52 raise InvalidRSpec(message)
54 relaxng_doc = etree.parse(schema)
55 relaxng = etree.RelaxNG(relaxng_doc)
58 error = relaxng.error_log.last_error
59 message = "%s (line %s)" % (error.message, error.line)
60 raise InvalidRSpec(message)
63 # XX TODO: Should try to use delegated credential first
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)
73 results = threads.get_results()
74 merged_rspec = merge_rspecs(results)
77 def renew_slice(api, xrn, creds, expiration_time):
79 # XX TODO: Should try to use delegated credential first
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)
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
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
99 # get a ticket from each aggregate
100 credential = api.getCredential()
101 threads = ThreadManager()
102 for aggregate, aggregate_rspec in aggregate_rspecs.items():
104 if aggregate in api.aggregates:
105 server = api.aggregates[aggregate]
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]:
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
120 threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
122 results = threads.get_results()
124 # gather information from each ticket
129 for result in results:
130 agg_ticket = SfaTicket(string=result)
131 attrs = agg_ticket.get_attributes()
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', []))
139 attributes = {'initscripts': initscripts,
141 merged_rspec = merge_rspecs(rspecs)
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)
154 return ticket.save_to_string(save_parents=True)
157 def delete_slice(api, xrn, origin_hrn=None):
159 # XX TODO: Should try to use delegated credential first
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()
169 def start_slice(api, xrn, creds):
171 # XX TODO: Should try to use delegated credential first
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()
181 def stop_slice(api, xrn, creds):
183 # XX TODO: Should try to use delegated credential first
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()
193 def reset_slice(api, xrn):
199 def shutdown(api, xrn, creds):
205 def status(api, xrn, creds):
211 def get_slices(api, creds):
212 # look in cache first
214 slices = api.cache.get('slices')
218 # fetch from aggregates
220 credential = api.getCredential()
221 threads = ThreadManager()
222 for aggregate in api.aggregates:
223 server = api.aggregates[aggregate]
224 threads.run(server.ListSlices, credential)
227 results = threads.get_results()
229 for result in results:
230 slices.extend(result)
234 api.cache.add('slices', slices)
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)
243 # get hrn of the original caller
244 origin_hrn = options.get('origin_hrn', None)
246 origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
248 # look in cache first
249 if api.cache and not xrn:
250 rspec = api.cache.get('nodes')
254 hrn, type = urn_to_hrn(xrn)
257 # XX TODO: Should try to use delegated credential first
259 cred = api.getCredential()
260 threads = ThreadManager()
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)
270 results = threads.get_results()
271 # combine the rspecs into a single rspec
272 for agg_rspec in results:
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)
279 root = tree.getroot()
280 if root.get("type") in ["SFA"]:
284 for network in root.iterfind("./network"):
285 rspec.append(deepcopy(network))
286 for request in root.iterfind("./request"):
287 rspec.append(deepcopy(request))
289 rspec = etree.tostring(rspec, xml_declaration=True, pretty_print=True)
291 if api.cache and not xrn:
292 api.cache.add('nodes', rspec)
298 r.parseFile(sys.argv[1])
300 create_slice(None,'plc.princeton.tmacktestslice',rspec)
302 if __name__ == "__main__":