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 valid_cred = self.api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
65 caller_hrn = valid_cred.get_gid_caller().get_hrn()
67 # attempt to use delegated credential first
68 credential = api.getDelegatedCredential(creds)
70 credential = api.getCredential()
71 threads = ThreadManager()
72 for aggregate in api.aggregates:
73 # prevent infinite loop. Dont send request back to caller
74 # unless the caller is the aggregate's SM
75 if caller_hrn == aggrgate and aggregate =! api.hrn:
78 # Just send entire RSpec to each aggregate
79 server = api.aggregates[aggregate]
80 threads.run(server.CreateSliver, xrn, credential, rspec, users)
82 results = threads.get_results()
83 merged_rspec = merge_rspecs(results)
86 def renew_slice(api, xrn, creds, expiration_time):
88 valid_cred = self.api.auth.checkCredentials(creds, 'renewesliver', hrn)[0]
89 caller_hrn = valid_cred.get_gid_caller().get_hrn()
91 # attempt to use delegated credential first
92 credential = api.getDelegatedCredential(creds)
94 credential = api.getCredential()
95 threads = ThreadManager()
96 for aggregate in api.aggregates:
97 # prevent infinite loop. Dont send request back to caller
98 # unless the caller is the aggregate's SM
99 if caller_hrn == aggrgate and aggregate =! api.hrn:
102 server = api.aggregates[aggregate]
103 threads.run(server.RenewSliver, xrn, credential, expiration_time)
104 threads.get_results()
107 def get_ticket(api, xrn, creds, rspec, users):
108 slice_hrn, type = urn_to_hrn(xrn)
109 # get the netspecs contained within the clients rspec
110 aggregate_rspecs = {}
111 tree= etree.parse(StringIO(rspec))
112 elements = tree.findall('./network')
113 for element in elements:
114 aggregate_hrn = element.values()[0]
115 aggregate_rspecs[aggregate_hrn] = rspec
117 # get the callers hrn
118 valid_cred = self.api.auth.checkCredentials(creds, 'getticket', hrn)[0]
119 caller_hrn = valid_cred.get_gid_caller().get_hrn()
121 # attempt to use delegated credential first
122 credential = api.getDelegatedCredential(creds)
124 credential = api.getCredential()
125 threads = ThreadManager()
126 for aggregate, aggregate_rspec in aggregate_rspecs.items():
127 # prevent infinite loop. Dont send request back to caller
128 # unless the caller is the aggregate's SM
129 if caller_hrn == aggrgate and aggregate =! api.hrn:
132 if aggregate in api.aggregates:
133 server = api.aggregates[aggregate]
135 net_urn = hrn_to_urn(aggregate, 'authority')
136 # we may have a peer that knows about this aggregate
137 for agg in api.aggregates:
138 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
139 if not target_aggs or not 'hrn' in target_aggs[0]:
141 # send the request to this address
142 url = target_aggs[0]['url']
143 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
144 # aggregate found, no need to keep looping
148 threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
150 results = threads.get_results()
152 # gather information from each ticket
157 for result in results:
158 agg_ticket = SfaTicket(string=result)
159 attrs = agg_ticket.get_attributes()
161 object_gid = agg_ticket.get_gid_object()
162 rspecs.append(agg_ticket.get_rspec())
163 initscripts.extend(attrs.get('initscripts', []))
164 slivers.extend(attrs.get('slivers', []))
167 attributes = {'initscripts': initscripts,
169 merged_rspec = merge_rspecs(rspecs)
171 # create a new ticket
172 ticket = SfaTicket(subject = slice_hrn)
173 ticket.set_gid_caller(api.auth.client_gid)
174 ticket.set_issuer(key=api.key, subject=api.hrn)
175 ticket.set_gid_object(object_gid)
176 ticket.set_pubkey(object_gid.get_pubkey())
177 #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
178 ticket.set_attributes(attributes)
179 ticket.set_rspec(merged_rspec)
182 return ticket.save_to_string(save_parents=True)
185 def delete_slice(api, xrn, creds):
186 # get the callers hrn
187 valid_cred = self.api.auth.checkCredentials(creds, 'deletesliver', hrn)[0]
188 caller_hrn = valid_cred.get_gid_caller().get_hrn()
190 # attempt to use delegated credential first
191 credential = api.getDelegatedCredential(creds)
193 credential = api.getCredential()
194 threads = ThreadManager()
195 for aggregate in api.aggregates:
196 # prevent infinite loop. Dont send request back to caller
197 # unless the caller is the aggregate's SM
198 if caller_hrn == aggrgate and aggregate =! api.hrn:
200 server = api.aggregates[aggregate]
201 threads.run(server.DeleteSliver, xrn, credential)
202 threads.get_results()
205 def start_slice(api, xrn, creds):
206 # get the callers hrn
207 valid_cred = self.api.auth.checkCredentials(creds, 'startslice', hrn)[0]
208 caller_hrn = valid_cred.get_gid_caller().get_hrn()
210 # attempt to use delegated credential first
211 credential = api.getDelegatedCredential(creds)
213 credential = api.getCredential()
214 threads = ThreadManager()
215 for aggregate in api.aggregates:
216 # prevent infinite loop. Dont send request back to caller
217 # unless the caller is the aggregate's SM
218 if caller_hrn == aggrgate and aggregate =! api.hrn:
220 server = api.aggregates[aggregate]
221 threads.run(server.Start, xrn, credential)
222 threads.get_results()
225 def stop_slice(api, xrn, creds):
226 # get the callers hrn
227 valid_cred = self.api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
228 caller_hrn = valid_cred.get_gid_caller().get_hrn()
230 # attempt to use delegated credential first
231 credential = api.getDelegatedCredential(creds)
233 credential = api.getCredential()
234 threads = ThreadManager()
235 for aggregate in api.aggregates:
236 # prevent infinite loop. Dont send request back to caller
237 # unless the caller is the aggregate's SM
238 if caller_hrn == aggrgate and aggregate =! api.hrn:
240 server = api.aggregates[aggregate]
241 threads.run(server.Stop, xrn, credential)
242 threads.get_results()
245 def reset_slice(api, xrn):
251 def shutdown(api, xrn, creds):
257 def status(api, xrn, creds):
263 def get_slices(api, creds):
265 # look in cache first
267 slices = api.cache.get('slices')
271 # get the callers hrn
272 valid_cred = self.api.auth.checkCredentials(creds, 'listslices', hrn)[0]
273 caller_hrn = valid_cred.get_gid_caller().get_hrn()
275 # attempt to use delegated credential first
276 credential = api.getDelegatedCredential(creds)
278 credential = api.getCredential()
279 threads = ThreadManager()
280 # fetch from aggregates
281 for aggregate in api.aggregates:
282 # prevent infinite loop. Dont send request back to caller
283 # unless the caller is the aggregate's SM
284 if caller_hrn == aggrgate and aggregate =! api.hrn:
286 server = api.aggregates[aggregate]
287 threads.run(server.ListSlices, credential)
290 results = threads.get_results()
292 for result in results:
293 slices.extend(result)
297 api.cache.add('slices', slices)
301 def get_rspec(api, creds, options):
303 # get slice's hrn from options
304 xrn = options.get('geni_slice_urn', None)
305 hrn, type = urn_to_hrn(xrn)
307 # get hrn of the original caller
308 origin_hrn = options.get('origin_hrn', None)
310 origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
312 # look in cache first
313 if api.cache and not xrn:
314 rspec = api.cache.get('nodes')
318 hrn, type = urn_to_hrn(xrn)
321 # get the callers hrn
322 valid_cred = self.api.auth.checkCredentials(creds, 'listnodes', hrn)[0]
323 caller_hrn = valid_cred.get_gid_caller().get_hrn()
325 # attempt to use delegated credential first
326 credential = api.getDelegatedCredential(creds)
328 credential = api.getCredential()
329 threads = ThreadManager()
330 for aggregate in api.aggregates:
331 # prevent infinite loop. Dont send request back to caller
332 # unless the caller is the aggregate's SM
333 if caller_hrn == aggrgate and aggregate =! api.hrn:
335 # get the rspec from the aggregate
336 server = api.aggregates[aggregate]
337 my_opts = copy(options)
338 my_opts['geni_compressed'] = False
339 threads.run(server.ListResources, credential, my_opts)
340 #threads.run(server.get_resources, cred, xrn, origin_hrn)
342 results = threads.get_results()
343 # combine the rspecs into a single rspec
344 for agg_rspec in results:
346 tree = etree.parse(StringIO(agg_rspec))
347 except etree.XMLSyntaxError:
348 message = str(agg_rspec) + ": " + str(sys.exc_info()[1])
349 raise InvalidRSpec(message)
351 root = tree.getroot()
352 if root.get("type") in ["SFA"]:
356 for network in root.iterfind("./network"):
357 rspec.append(deepcopy(network))
358 for request in root.iterfind("./request"):
359 rspec.append(deepcopy(request))
361 rspec = etree.tostring(rspec, xml_declaration=True, pretty_print=True)
363 if api.cache and not xrn:
364 api.cache.add('nodes', rspec)
370 r.parseFile(sys.argv[1])
372 create_slice(None,'plc.princeton.tmacktestslice',rspec)
374 if __name__ == "__main__":