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 agg_info = api.aggregates[agg].get_aggregates(credential, net_urn)
112 # send the request to this address
113 url = 'http://%s:%s' % (agg_info['addr'], agg_info['port'])
114 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
118 threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
120 results = threads.get_results()
122 # gather information from each ticket
127 for result in results:
128 agg_ticket = SfaTicket(string=result)
129 attrs = agg_ticket.get_attributes()
131 object_gid = agg_ticket.get_gid_object()
132 rspecs.append(agg_ticket.get_rspec())
133 initscripts.extend(attrs.get('initscripts', []))
134 slivers.extend(attrs.get('slivers', []))
137 attributes = {'initscripts': initscripts,
139 merged_rspec = merge_rspecs(rspecs)
141 # create a new ticket
142 ticket = SfaTicket(subject = slice_hrn)
143 ticket.set_gid_caller(api.auth.client_gid)
144 ticket.set_issuer(key=api.key, subject=api.hrn)
145 ticket.set_gid_object(object_gid)
146 ticket.set_pubkey(object_gid.get_pubkey())
147 #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
148 ticket.set_attributes(attributes)
149 ticket.set_rspec(merged_rspec)
152 return ticket.save_to_string(save_parents=True)
155 def delete_slice(api, xrn, origin_hrn=None):
157 # XX TODO: Should try to use delegated credential first
159 credential = api.getCredential()
160 threads = ThreadManager()
161 for aggregate in api.aggregates:
162 server = api.aggregates[aggregate]
163 threads.run(server.DeleteSliver, xrn, credential)
164 threads.get_results()
167 def start_slice(api, xrn, creds):
169 # XX TODO: Should try to use delegated credential first
171 credential = api.getCredential()
172 threads = ThreadManager()
173 for aggregate in api.aggregates:
174 server = api.aggregates[aggregate]
175 threads.run(server.Start, xrn, credential)
176 threads.get_results()
179 def stop_slice(api, xrn, creds):
181 # XX TODO: Should try to use delegated credential first
183 credential = api.getCredential()
184 threads = ThreadManager()
185 for aggregate in api.aggregates:
186 server = api.aggregates[aggregate]
187 threads.run(server.Stop, xrn, credential)
188 threads.get_results()
191 def reset_slice(api, xrn):
197 def shutdown(api, xrn, creds):
203 def status(api, xrn, creds):
209 def get_slices(api, creds):
210 # look in cache first
212 slices = api.cache.get('slices')
216 # fetch from aggregates
218 credential = api.getCredential()
219 threads = ThreadManager()
220 for aggregate in api.aggregates:
221 server = api.aggregates[aggregate]
222 threads.run(server.ListSlices, credential)
225 results = threads.get_results()
227 for result in results:
228 slices.extend(result)
232 api.cache.add('slices', slices)
236 def get_rspec(api, creds, options):
237 # get slice's hrn from options
238 xrn = options.get('geni_slice_urn', None)
239 hrn, type = urn_to_hrn(xrn)
241 # get hrn of the original caller
242 origin_hrn = options.get('origin_hrn', None)
244 origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
246 # look in cache first
247 if api.cache and not xrn:
248 rspec = api.cache.get('nodes')
252 hrn, type = urn_to_hrn(xrn)
255 # XX TODO: Should try to use delegated credential first
257 cred = api.getCredential()
258 threads = ThreadManager()
260 for aggregate in api.aggregates:
261 if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
262 # get the rspec from the aggregate
263 server = api.aggregates[aggregate]
264 threads.run(server.ListResources, cred, options)
265 #threads.run(server.get_resources, cred, xrn, origin_hrn)
268 results = threads.get_results()
269 # combine the rspecs into a single rspec
270 for agg_rspec in results:
272 tree = etree.parse(StringIO(agg_rspec))
273 except etree.XMLSyntaxError:
274 message = str(agg_rspec) + ": " + str(sys.exc_info()[1])
275 raise InvalidRSpec(message)
277 root = tree.getroot()
278 if root.get("type") in ["SFA"]:
282 for network in root.iterfind("./network"):
283 rspec.append(deepcopy(network))
284 for request in root.iterfind("./request"):
285 rspec.append(deepcopy(request))
287 rspec = etree.tostring(rspec, xml_declaration=True, pretty_print=True)
289 if api.cache and not xrn:
290 api.cache.add('nodes', rspec)
296 r.parseFile(sys.argv[1])
298 create_slice(None,'plc.princeton.tmacktestslice',rspec)
300 if __name__ == "__main__":