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)
63 # attempt to use delegated credential first
64 credential = api.getDelegatedCredential(creds)
66 credential = api.getCredential()
67 threads = ThreadManager()
68 for aggregate in api.aggregates:
69 # Just send entire RSpec to each aggregate
70 server = api.aggregates[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):
78 # attempt to use delegated credential first
79 credential = api.getDelegatedCredential(creds)
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 # attempt to use delegated credential first
100 credential = api.getDelegatedCredential(creds)
102 credential = api.getCredential()
103 threads = ThreadManager()
104 for aggregate, aggregate_rspec in aggregate_rspecs.items():
106 if aggregate in api.aggregates:
107 server = api.aggregates[aggregate]
109 net_urn = hrn_to_urn(aggregate, 'authority')
110 # we may have a peer that knows about this aggregate
111 for agg in api.aggregates:
112 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
113 if not target_aggs or not 'hrn' in target_aggs[0]:
115 # send the request to this address
116 url = target_aggs[0]['url']
117 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
118 # aggregate found, no need to keep looping
122 threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
124 results = threads.get_results()
126 # gather information from each ticket
131 for result in results:
132 agg_ticket = SfaTicket(string=result)
133 attrs = agg_ticket.get_attributes()
135 object_gid = agg_ticket.get_gid_object()
136 rspecs.append(agg_ticket.get_rspec())
137 initscripts.extend(attrs.get('initscripts', []))
138 slivers.extend(attrs.get('slivers', []))
141 attributes = {'initscripts': initscripts,
143 merged_rspec = merge_rspecs(rspecs)
145 # create a new ticket
146 ticket = SfaTicket(subject = slice_hrn)
147 ticket.set_gid_caller(api.auth.client_gid)
148 ticket.set_issuer(key=api.key, subject=api.hrn)
149 ticket.set_gid_object(object_gid)
150 ticket.set_pubkey(object_gid.get_pubkey())
151 #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
152 ticket.set_attributes(attributes)
153 ticket.set_rspec(merged_rspec)
156 return ticket.save_to_string(save_parents=True)
159 def delete_slice(api, xrn, origin_hrn=None):
160 # attempt to use delegated credential first
161 credential = api.getDelegatedCredential(creds)
163 credential = api.getCredential()
164 threads = ThreadManager()
165 for aggregate in api.aggregates:
166 server = api.aggregates[aggregate]
167 threads.run(server.DeleteSliver, xrn, credential)
168 threads.get_results()
171 def start_slice(api, xrn, creds):
172 # attempt to use delegated credential first
173 credential = api.getDelegatedCredential(creds)
175 credential = api.getCredential()
176 threads = ThreadManager()
177 for aggregate in api.aggregates:
178 server = api.aggregates[aggregate]
179 threads.run(server.Start, xrn, credential)
180 threads.get_results()
183 def stop_slice(api, xrn, creds):
184 # attempt to use delegated credential first
185 credential = api.getDelegatedCredential(creds)
187 credential = api.getCredential()
188 threads = ThreadManager()
189 for aggregate in api.aggregates:
190 server = api.aggregates[aggregate]
191 threads.run(server.Stop, xrn, credential)
192 threads.get_results()
195 def reset_slice(api, xrn):
201 def shutdown(api, xrn, creds):
207 def status(api, xrn, creds):
213 def get_slices(api, creds):
214 # look in cache first
216 slices = api.cache.get('slices')
220 # attempt to use delegated credential first
221 credential = api.getDelegatedCredential(creds)
223 credential = api.getCredential()
224 threads = ThreadManager()
225 # fetch from aggregates
226 for aggregate in api.aggregates:
227 server = api.aggregates[aggregate]
228 threads.run(server.ListSlices, credential)
231 results = threads.get_results()
233 for result in results:
234 slices.extend(result)
238 api.cache.add('slices', slices)
242 def get_rspec(api, creds, options):
243 # get slice's hrn from options
244 xrn = options.get('geni_slice_urn', None)
245 hrn, type = urn_to_hrn(xrn)
247 # get hrn of the original caller
248 origin_hrn = options.get('origin_hrn', None)
250 origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
252 # look in cache first
253 if api.cache and not xrn:
254 rspec = api.cache.get('nodes')
258 hrn, type = urn_to_hrn(xrn)
261 # attempt to use delegated credential first
262 credential = api.getDelegatedCredential(creds)
264 credential = api.getCredential()
265 threads = ThreadManager()
266 for aggregate in api.aggregates:
267 # get the rspec from the aggregate
268 server = api.aggregates[aggregate]
269 my_opts = copy(options)
270 my_opts['geni_compressed'] = False
271 threads.run(server.ListResources, credential, my_opts)
272 #threads.run(server.get_resources, cred, xrn, origin_hrn)
274 results = threads.get_results()
275 # combine the rspecs into a single rspec
276 for agg_rspec in results:
278 tree = etree.parse(StringIO(agg_rspec))
279 except etree.XMLSyntaxError:
280 message = str(agg_rspec) + ": " + str(sys.exc_info()[1])
281 raise InvalidRSpec(message)
283 root = tree.getroot()
284 if root.get("type") in ["SFA"]:
288 for network in root.iterfind("./network"):
289 rspec.append(deepcopy(network))
290 for request in root.iterfind("./request"):
291 rspec.append(deepcopy(request))
293 rspec = etree.tostring(rspec, xml_declaration=True, pretty_print=True)
295 if api.cache and not xrn:
296 api.cache.add('nodes', rspec)
302 r.parseFile(sys.argv[1])
304 create_slice(None,'plc.princeton.tmacktestslice',rspec)
306 if __name__ == "__main__":