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
30 version['geni_api'] = 1
34 def slice_status(api, slice_xrn, creds ):
36 result['geni_urn'] = slice_xrn
37 result['geni_status'] = 'unknown'
38 result['geni_resources'] = {}
41 def create_slice(api, xrn, creds, rspec, users):
42 hrn, type = urn_to_hrn(xrn)
44 # Validate the RSpec against PlanetLab's schema --disabled for now
45 # The schema used here needs to aggregate the PL and VINI schemas
46 # schema = "/var/www/html/schemas/pl.rng"
50 tree = etree.parse(StringIO(rspec))
51 except etree.XMLSyntaxError:
52 message = str(sys.exc_info()[1])
53 raise InvalidRSpec(message)
55 relaxng_doc = etree.parse(schema)
56 relaxng = etree.RelaxNG(relaxng_doc)
59 error = relaxng.error_log.last_error
60 message = "%s (line %s)" % (error.message, error.line)
61 raise InvalidRSpec(message)
64 # XX TODO: Should try to use delegated credential first
66 cred = api.getCredential()
67 threads = ThreadManager()
68 for aggregate in api.aggregates:
69 if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
70 server = api.aggregates[aggregate]
71 # Just send entire RSpec to each aggregate
72 threads.run(server.CreateSliver, xrn, cred, rspec, users)
74 results = threads.get_results()
75 merged_rspec = merge_rspecs(results)
78 def renew_slice(api, xrn, creds, expiration_time):
80 # XX TODO: Should try to use delegated credential first
82 credential = api.getCredential()
83 threads = ThreadManager()
84 for aggregate in api.aggregates:
85 server = api.aggregates[aggregate]
86 threads.run(server.RenewSliver, xrn, credential, expiration_time)
90 def get_ticket(api, xrn, creds, rspec, users):
91 slice_hrn, type = urn_to_hrn(xrn)
92 # get the netspecs contained within the clients rspec
94 tree= etree.parse(StringIO(rspec))
95 elements = tree.findall('./network')
96 for element in elements:
97 aggregate_hrn = element.values()[0]
98 aggregate_rspecs[aggregate_hrn] = rspec
100 # get a ticket from each aggregate
101 credential = api.getCredential()
102 threads = ThreadManager()
103 for aggregate, aggregate_rspec in aggregate_rspecs.items():
105 if aggregate in api.aggregates:
106 server = api.aggregates[aggregate]
108 net_urn = hrn_to_urn(aggregate, 'authority')
109 # we may have a peer that knows about this aggregate
110 for agg in api.aggregates:
111 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
112 if not target_aggs or not 'hrn' in target_aggs[0]:
114 # send the request to this address
115 url = target_aggs[0]['url']
116 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
117 # aggregate found, no need to keep looping
121 threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
123 results = threads.get_results()
125 # gather information from each ticket
130 for result in results:
131 agg_ticket = SfaTicket(string=result)
132 attrs = agg_ticket.get_attributes()
134 object_gid = agg_ticket.get_gid_object()
135 rspecs.append(agg_ticket.get_rspec())
136 initscripts.extend(attrs.get('initscripts', []))
137 slivers.extend(attrs.get('slivers', []))
140 attributes = {'initscripts': initscripts,
142 merged_rspec = merge_rspecs(rspecs)
144 # create a new ticket
145 ticket = SfaTicket(subject = slice_hrn)
146 ticket.set_gid_caller(api.auth.client_gid)
147 ticket.set_issuer(key=api.key, subject=api.hrn)
148 ticket.set_gid_object(object_gid)
149 ticket.set_pubkey(object_gid.get_pubkey())
150 #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
151 ticket.set_attributes(attributes)
152 ticket.set_rspec(merged_rspec)
155 return ticket.save_to_string(save_parents=True)
158 def delete_slice(api, xrn, origin_hrn=None):
160 # XX TODO: Should try to use delegated credential first
162 credential = api.getCredential()
163 threads = ThreadManager()
164 for aggregate in api.aggregates:
165 server = api.aggregates[aggregate]
166 threads.run(server.DeleteSliver, xrn, credential)
167 threads.get_results()
170 def start_slice(api, xrn, creds):
172 # XX TODO: Should try to use delegated credential first
174 credential = api.getCredential()
175 threads = ThreadManager()
176 for aggregate in api.aggregates:
177 server = api.aggregates[aggregate]
178 threads.run(server.Start, xrn, credential)
179 threads.get_results()
182 def stop_slice(api, xrn, creds):
184 # XX TODO: Should try to use delegated credential first
186 credential = api.getCredential()
187 threads = ThreadManager()
188 for aggregate in api.aggregates:
189 server = api.aggregates[aggregate]
190 threads.run(server.Stop, xrn, credential)
191 threads.get_results()
194 def reset_slice(api, xrn):
200 def shutdown(api, xrn, creds):
206 def status(api, xrn, creds):
212 def get_slices(api, creds):
213 # look in cache first
215 slices = api.cache.get('slices')
219 # fetch from aggregates
221 credential = api.getCredential()
222 threads = ThreadManager()
223 for aggregate in api.aggregates:
224 server = api.aggregates[aggregate]
225 threads.run(server.ListSlices, credential)
228 results = threads.get_results()
230 for result in results:
231 slices.extend(result)
235 api.cache.add('slices', slices)
239 def get_rspec(api, creds, options):
240 # get slice's hrn from options
241 xrn = options.get('geni_slice_urn', None)
242 hrn, type = urn_to_hrn(xrn)
244 # get hrn of the original caller
245 origin_hrn = options.get('origin_hrn', None)
247 origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
249 # look in cache first
250 if api.cache and not xrn:
251 rspec = api.cache.get('nodes')
255 hrn, type = urn_to_hrn(xrn)
258 # XX TODO: Should try to use delegated credential first
260 cred = api.getCredential()
261 threads = ThreadManager()
263 for aggregate in api.aggregates:
264 if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
265 # get the rspec from the aggregate
266 server = api.aggregates[aggregate]
267 my_opts = copy(options)
268 my_opts['geni_compressed'] = False
269 threads.run(server.ListResources, cred, my_opts)
270 #threads.run(server.get_resources, cred, xrn, origin_hrn)
273 results = threads.get_results()
274 # combine the rspecs into a single rspec
275 for agg_rspec in results:
277 tree = etree.parse(StringIO(agg_rspec))
278 except etree.XMLSyntaxError:
279 message = str(agg_rspec) + ": " + str(sys.exc_info()[1])
280 raise InvalidRSpec(message)
282 root = tree.getroot()
283 if root.get("type") in ["SFA"]:
287 for network in root.iterfind("./network"):
288 rspec.append(deepcopy(network))
289 for request in root.iterfind("./request"):
290 rspec.append(deepcopy(request))
292 rspec = etree.tostring(rspec, xml_declaration=True, pretty_print=True)
294 if api.cache and not xrn:
295 api.cache.add('nodes', rspec)
301 r.parseFile(sys.argv[1])
303 create_slice(None,'plc.princeton.tmacktestslice',rspec)
305 if __name__ == "__main__":