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 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 valid_cred = api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
64 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
66 # attempt to use delegated credential first
67 credential = api.getDelegatedCredential(creds)
69 credential = api.getCredential()
70 threads = ThreadManager()
71 for aggregate in api.aggregates:
72 # prevent infinite loop. Dont send request back to caller
73 # unless the caller is the aggregate's SM
74 if caller_hrn == aggregate and aggregate != api.hrn:
77 # Just send entire RSpec to each aggregate
78 server = api.aggregates[aggregate]
79 threads.run(server.CreateSliver, xrn, credential, rspec, users)
81 results = threads.get_results()
82 merged_rspec = merge_rspecs(results)
85 def renew_slice(api, xrn, creds, expiration_time):
87 valid_cred = api.auth.checkCredentials(creds, 'renewesliver', hrn)[0]
88 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
90 # attempt to use delegated credential first
91 credential = api.getDelegatedCredential(creds)
93 credential = api.getCredential()
94 threads = ThreadManager()
95 for aggregate in api.aggregates:
96 # prevent infinite loop. Dont send request back to caller
97 # unless the caller is the aggregate's SM
98 if caller_hrn == aggregate and aggregate != api.hrn:
101 server = api.aggregates[aggregate]
102 threads.run(server.RenewSliver, xrn, credential, expiration_time)
103 threads.get_results()
106 def get_ticket(api, xrn, creds, rspec, users):
107 slice_hrn, type = urn_to_hrn(xrn)
108 # get the netspecs contained within the clients rspec
109 aggregate_rspecs = {}
110 tree= etree.parse(StringIO(rspec))
111 elements = tree.findall('./network')
112 for element in elements:
113 aggregate_hrn = element.values()[0]
114 aggregate_rspecs[aggregate_hrn] = rspec
116 # get the callers hrn
117 valid_cred = api.auth.checkCredentials(creds, 'getticket', hrn)[0]
118 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
120 # attempt to use delegated credential first
121 credential = api.getDelegatedCredential(creds)
123 credential = api.getCredential()
124 threads = ThreadManager()
125 for aggregate, aggregate_rspec in aggregate_rspecs.items():
126 # prevent infinite loop. Dont send request back to caller
127 # unless the caller is the aggregate's SM
128 if caller_hrn == aggregate and aggregate != api.hrn:
131 if aggregate in api.aggregates:
132 server = api.aggregates[aggregate]
134 net_urn = hrn_to_urn(aggregate, 'authority')
135 # we may have a peer that knows about this aggregate
136 for agg in api.aggregates:
137 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
138 if not target_aggs or not 'hrn' in target_aggs[0]:
140 # send the request to this address
141 url = target_aggs[0]['url']
142 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
143 # aggregate found, no need to keep looping
147 threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
149 results = threads.get_results()
151 # gather information from each ticket
156 for result in results:
157 agg_ticket = SfaTicket(string=result)
158 attrs = agg_ticket.get_attributes()
160 object_gid = agg_ticket.get_gid_object()
161 rspecs.append(agg_ticket.get_rspec())
162 initscripts.extend(attrs.get('initscripts', []))
163 slivers.extend(attrs.get('slivers', []))
166 attributes = {'initscripts': initscripts,
168 merged_rspec = merge_rspecs(rspecs)
170 # create a new ticket
171 ticket = SfaTicket(subject = slice_hrn)
172 ticket.set_gid_caller(api.auth.client_gid)
173 ticket.set_issuer(key=api.key, subject=api.hrn)
174 ticket.set_gid_object(object_gid)
175 ticket.set_pubkey(object_gid.get_pubkey())
176 #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
177 ticket.set_attributes(attributes)
178 ticket.set_rspec(merged_rspec)
181 return ticket.save_to_string(save_parents=True)
184 def delete_slice(api, xrn, creds):
185 # get the callers hrn
186 valid_cred = api.auth.checkCredentials(creds, 'deletesliver', hrn)[0]
187 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
189 # attempt to use delegated credential first
190 credential = api.getDelegatedCredential(creds)
192 credential = api.getCredential()
193 threads = ThreadManager()
194 for aggregate in api.aggregates:
195 # prevent infinite loop. Dont send request back to caller
196 # unless the caller is the aggregate's SM
197 if caller_hrn == aggregate and aggregate != api.hrn:
199 server = api.aggregates[aggregate]
200 threads.run(server.DeleteSliver, xrn, credential)
201 threads.get_results()
204 def start_slice(api, xrn, creds):
205 # get the callers hrn
206 valid_cred = api.auth.checkCredentials(creds, 'startslice', hrn)[0]
207 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
209 # attempt to use delegated credential first
210 credential = api.getDelegatedCredential(creds)
212 credential = api.getCredential()
213 threads = ThreadManager()
214 for aggregate in api.aggregates:
215 # prevent infinite loop. Dont send request back to caller
216 # unless the caller is the aggregate's SM
217 if caller_hrn == aggregate and aggregate != api.hrn:
219 server = api.aggregates[aggregate]
220 threads.run(server.Start, xrn, credential)
221 threads.get_results()
224 def stop_slice(api, xrn, creds):
225 # get the callers hrn
226 valid_cred = api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
227 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
229 # attempt to use delegated credential first
230 credential = api.getDelegatedCredential(creds)
232 credential = api.getCredential()
233 threads = ThreadManager()
234 for aggregate in api.aggregates:
235 # prevent infinite loop. Dont send request back to caller
236 # unless the caller is the aggregate's SM
237 if caller_hrn == aggregate and aggregate != api.hrn:
239 server = api.aggregates[aggregate]
240 threads.run(server.Stop, xrn, credential)
241 threads.get_results()
244 def reset_slice(api, xrn):
250 def shutdown(api, xrn, creds):
256 def status(api, xrn, creds):
262 def get_slices(api, creds):
264 # look in cache first
266 slices = api.cache.get('slices')
270 # get the callers hrn
271 valid_cred = api.auth.checkCredentials(creds, 'listslices', hrn)[0]
272 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
274 # attempt to use delegated credential first
275 credential = api.getDelegatedCredential(creds)
277 credential = api.getCredential()
278 threads = ThreadManager()
279 # fetch from aggregates
280 for aggregate in api.aggregates:
281 # prevent infinite loop. Dont send request back to caller
282 # unless the caller is the aggregate's SM
283 if caller_hrn == aggregate and aggregate != api.hrn:
285 server = api.aggregates[aggregate]
286 threads.run(server.ListSlices, credential)
289 results = threads.get_results()
291 for result in results:
292 slices.extend(result)
296 api.cache.add('slices', slices)
300 def get_rspec(api, creds, options):
302 # get slice's hrn from options
303 xrn = options.get('geni_slice_urn', None)
304 hrn, type = urn_to_hrn(xrn)
306 # get hrn of the original caller
307 origin_hrn = options.get('origin_hrn', None)
309 origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
311 # look in cache first
312 if api.cache and not xrn:
313 rspec = api.cache.get('nodes')
317 hrn, type = urn_to_hrn(xrn)
320 # get the callers hrn
321 valid_cred = api.auth.checkCredentials(creds, 'listnodes', hrn)[0]
322 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
324 # attempt to use delegated credential first
325 credential = api.getDelegatedCredential(creds)
327 credential = api.getCredential()
328 threads = ThreadManager()
329 for aggregate in api.aggregates:
330 # prevent infinite loop. Dont send request back to caller
331 # unless the caller is the aggregate's SM
332 if caller_hrn == aggregate and aggregate != api.hrn:
334 # get the rspec from the aggregate
335 server = api.aggregates[aggregate]
336 my_opts = copy(options)
337 my_opts['geni_compressed'] = False
338 threads.run(server.ListResources, credential, my_opts)
339 #threads.run(server.get_resources, cred, xrn, origin_hrn)
341 results = threads.get_results()
342 # combine the rspecs into a single rspec
343 for agg_rspec in results:
345 tree = etree.parse(StringIO(agg_rspec))
346 except etree.XMLSyntaxError:
347 message = str(agg_rspec) + ": " + str(sys.exc_info()[1])
348 raise InvalidRSpec(message)
350 root = tree.getroot()
351 if root.get("type") in ["SFA"]:
355 for network in root.iterfind("./network"):
356 rspec.append(deepcopy(network))
357 for request in root.iterfind("./request"):
358 rspec.append(deepcopy(request))
360 rspec = etree.tostring(rspec, xml_declaration=True, pretty_print=True)
362 if api.cache and not xrn:
363 api.cache.add('nodes', rspec)
369 r.parseFile(sys.argv[1])
371 create_slice(None,'plc.princeton.tmacktestslice',rspec)
373 if __name__ == "__main__":