4 from StringIO import StringIO
8 from sfa.trust.sfaticket import SfaTicket
9 from sfa.trust.credential import Credential
11 from sfa.util.sfalogging import logger
12 from sfa.util.xrn import Xrn, urn_to_hrn
13 from sfa.util.version import version_core
14 from sfa.util.callids import Callids
15 from sfa.util.cache import Cache
17 from sfa.server.threadmanager import ThreadManager
19 from sfa.rspecs.rspec_converter import RSpecConverter
20 from sfa.rspecs.version_manager import VersionManager
21 from sfa.rspecs.rspec import RSpec
23 from sfa.client.client_helper import sfa_to_pg_users_arg
24 from sfa.client.return_value import ReturnValue
28 # the cache instance is a class member so it survives across incoming requests
31 def __init__ (self, config):
33 if config.SFA_SM_CACHING:
34 if SliceManager.cache is None:
35 SliceManager.cache = Cache()
36 self.cache = SliceManager.cache
38 def GetVersion(self, api, options):
39 # peers explicitly in aggregates.xml
40 peers =dict ([ (peername,interface.get_url()) for (peername,interface) in api.aggregates.iteritems()
41 if peername != api.hrn])
42 version_manager = VersionManager()
43 ad_rspec_versions = []
44 request_rspec_versions = []
45 for rspec_version in version_manager.versions:
46 if rspec_version.content_type in ['*', 'ad']:
47 ad_rspec_versions.append(rspec_version.to_dict())
48 if rspec_version.content_type in ['*', 'request']:
49 request_rspec_versions.append(rspec_version.to_dict())
50 xrn=Xrn(api.hrn, 'authority+sa')
52 'interface':'slicemgr',
55 'geni_api_versions': {'2': 'http://%s:%s' % (api.config.SFA_SM_HOST, api.config.SFA_SM_PORT)},
56 'hrn' : xrn.get_hrn(),
57 'urn' : xrn.get_urn(),
59 'geni_request_rspec_versions': request_rspec_versions,
60 'geni_ad_rspec_versions': ad_rspec_versions,
62 sm_version=version_core(version_more)
63 # local aggregate if present needs to have localhost resolved
64 if api.hrn in api.aggregates:
65 local_am_url=api.aggregates[api.hrn].get_url()
66 sm_version['peers'][api.hrn]=local_am_url.replace('localhost',sm_version['hostname'])
69 def drop_slicemgr_stats(self, rspec):
71 stats_elements = rspec.xml.xpath('//statistics')
72 for node in stats_elements:
73 node.getparent().remove(node)
75 logger.warn("drop_slicemgr_stats failed: %s " % (str(e)))
77 def add_slicemgr_stat(self, rspec, callname, aggname, elapsed, status, exc_info=None):
79 stats_tags = rspec.xml.xpath('//statistics[@call="%s"]' % callname)
81 stats_tag = stats_tags[0]
83 stats_tag = rspec.xml.root.add_element("statistics", call=callname)
85 stat_tag = stats_tag.add_element("aggregate", name=str(aggname),
86 elapsed=str(elapsed), status=str(status))
89 exc_tag = stat_tag.add_element("exc_info", name=str(exc_info[1]))
91 # formats the traceback as one big text blob
92 #exc_tag.text = "\n".join(traceback.format_exception(exc_info[0], exc_info[1], exc_info[2]))
94 # formats the traceback as a set of xml elements
95 tb = traceback.extract_tb(exc_info[2])
97 exc_frame = exc_tag.add_element("tb_frame", filename=str(item[0]),
98 line=str(item[1]), func=str(item[2]), code=str(item[3]))
101 logger.warn("add_slicemgr_stat failed on %s: %s" %(aggname, str(e)))
103 def ListResources(self, api, creds, options):
104 call_id = options.get('call_id')
105 if Callids().already_handled(call_id): return ""
107 version_manager = VersionManager()
109 def _ListResources(aggregate, server, credential, options):
110 forward_options = copy(options)
113 version = api.get_cached_server_version(server)
114 # force ProtoGENI aggregates to give us a v2 RSpec
115 if 'sfa' in version.keys():
116 forward_options['rspec_version'] = version_manager.get_version('SFA 1').to_dict()
118 forward_options['rspec_version'] = version_manager.get_version('ProtoGENI 2').to_dict()
119 rspec = server.ListResources(credential, forward_options)
120 return {"aggregate": aggregate, "rspec": rspec, "elapsed": time.time()-tStart, "status": "success"}
122 api.logger.log_exc("ListResources failed at %s" %(server.url))
123 return {"aggregate": aggregate, "elapsed": time.time()-tStart, "status": "exception", "exc_info": sys.exc_info()}
125 # get slice's hrn from options
126 xrn = options.get('geni_slice_urn', '')
127 (hrn, type) = urn_to_hrn(xrn)
128 if 'geni_compressed' in options:
129 del(options['geni_compressed'])
131 # get the rspec's return format from options
132 rspec_version = version_manager.get_version(options.get('geni_rspec_version'))
133 version_string = "rspec_%s" % (rspec_version)
135 # look in cache first
136 cached_requested = options.get('cached', True)
137 if not xrn and self.cache and cached_request:
138 rspec = self.cache.get(version_string)
140 api.logger.debug("SliceManager.ListResources returns cached advertisement")
143 # get the callers hrn
144 valid_cred = api.auth.checkCredentials(creds, 'listnodes', hrn)[0]
145 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
147 # attempt to use delegated credential first
148 cred = api.getDelegatedCredential(creds)
150 cred = api.getCredential()
151 threads = ThreadManager()
152 for aggregate in api.aggregates:
153 # prevent infinite loop. Dont send request back to caller
154 # unless the caller is the aggregate's SM
155 if caller_hrn == aggregate and aggregate != api.hrn:
158 # get the rspec from the aggregate
159 interface = api.aggregates[aggregate]
160 server = api.server_proxy(interface, cred)
161 threads.run(_ListResources, aggregate, server, [cred], options)
164 results = threads.get_results()
165 rspec_version = version_manager.get_version(options.get('geni_rspec_version'))
167 result_version = version_manager._get_version(rspec_version.type, rspec_version.version, 'manifest')
169 result_version = version_manager._get_version(rspec_version.type, rspec_version.version, 'ad')
170 rspec = RSpec(version=result_version)
171 for result in results:
172 self.add_slicemgr_stat(rspec, "ListResources", result["aggregate"], result["elapsed"],
173 result["status"], result.get("exc_info",None))
174 if result["status"]=="success":
176 rspec.version.merge(ReturnValue.get_value(result["rspec"]))
178 api.logger.log_exc("SM.ListResources: Failed to merge aggregate rspec")
181 if self.cache and not xrn:
182 api.logger.debug("SliceManager.ListResources caches advertisement")
183 self.cache.add(version_string, rspec.toxml())
188 def CreateSliver(self, api, xrn, creds, rspec_str, users, options):
189 call_id = options.get('call_id')
190 if Callids().already_handled(call_id): return ""
192 version_manager = VersionManager()
193 def _CreateSliver(aggregate, server, xrn, credential, rspec, users, options):
196 # Need to call GetVersion at an aggregate to determine the supported
197 # rspec type/format beofre calling CreateSliver at an Aggregate.
198 server_version = api.get_cached_server_version(server)
199 requested_users = users
200 if 'sfa' not in server_version and 'geni_api' in server_version:
201 # sfa aggregtes support both sfa and pg rspecs, no need to convert
202 # if aggregate supports sfa rspecs. otherwise convert to pg rspec
203 rspec = RSpec(RSpecConverter.to_pg_rspec(rspec, 'request'))
204 filter = {'component_manager_id': server_version['urn']}
206 rspec = rspec.toxml()
207 requested_users = sfa_to_pg_users_arg(users)
208 rspec = server.CreateSliver(xrn, credential, rspec, requested_users, options)
209 return {"aggregate": aggregate, "rspec": rspec, "elapsed": time.time()-tStart, "status": "success"}
211 logger.log_exc('Something wrong in _CreateSliver with URL %s'%server.url)
212 return {"aggregate": aggregate, "elapsed": time.time()-tStart, "status": "exception", "exc_info": sys.exc_info()}
214 # Validate the RSpec against PlanetLab's schema --disabled for now
215 # The schema used here needs to aggregate the PL and VINI schemas
216 # schema = "/var/www/html/schemas/pl.rng"
217 rspec = RSpec(rspec_str)
220 # rspec.validate(schema)
222 # if there is a <statistics> section, the aggregates don't care about it,
224 self.drop_slicemgr_stats(rspec)
226 # attempt to use delegated credential first
227 cred = api.getDelegatedCredential(creds)
229 cred = api.getCredential()
231 # get the callers hrn
232 hrn, type = urn_to_hrn(xrn)
233 valid_cred = api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
234 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
235 threads = ThreadManager()
236 for aggregate in api.aggregates:
237 # prevent infinite loop. Dont send request back to caller
238 # unless the caller is the aggregate's SM
239 if caller_hrn == aggregate and aggregate != api.hrn:
241 interface = api.aggregates[aggregate]
242 server = api.server_proxy(interface, cred)
243 # Just send entire RSpec to each aggregate
244 threads.run(_CreateSliver, aggregate, server, xrn, [cred], rspec.toxml(), users, options)
246 results = threads.get_results()
247 manifest_version = version_manager._get_version(rspec.version.type, rspec.version.version, 'manifest')
248 result_rspec = RSpec(version=manifest_version)
249 for result in results:
250 self.add_slicemgr_stat(result_rspec, "CreateSliver", result["aggregate"], result["elapsed"],
251 result["status"], result.get("exc_info",None))
252 if result["status"]=="success":
254 result_rspec.version.merge(ReturnValue.get_value(result["rspec"]))
256 api.logger.log_exc("SM.CreateSliver: Failed to merge aggregate rspec")
257 return result_rspec.toxml()
259 def RenewSliver(self, api, xrn, creds, expiration_time, options):
260 call_id = options.get('call_id')
261 if Callids().already_handled(call_id): return True
263 def _RenewSliver(server, xrn, creds, expiration_time, options):
264 return server.RenewSliver(xrn, creds, expiration_time, options)
266 (hrn, type) = urn_to_hrn(xrn)
267 # get the callers hrn
268 valid_cred = api.auth.checkCredentials(creds, 'renewsliver', hrn)[0]
269 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
271 # attempt to use delegated credential first
272 cred = api.getDelegatedCredential(creds)
274 cred = api.getCredential()
275 threads = ThreadManager()
276 for aggregate in api.aggregates:
277 # prevent infinite loop. Dont send request back to caller
278 # unless the caller is the aggregate's SM
279 if caller_hrn == aggregate and aggregate != api.hrn:
281 interface = api.aggregates[aggregate]
282 server = api.server_proxy(interface, cred)
283 threads.run(_RenewSliver, server, xrn, [cred], expiration_time, options)
285 results = [ReturnValue.get_value(result) for result in threads.get_results()]
286 return reduce (lambda x,y: x and y, results , True)
288 def DeleteSliver(self, api, xrn, creds, options):
289 call_id = options.get('call_id')
290 if Callids().already_handled(call_id): return ""
292 def _DeleteSliver(server, xrn, creds, options):
293 return server.DeleteSliver(xrn, creds, options)
295 (hrn, type) = urn_to_hrn(xrn)
296 # get the callers hrn
297 valid_cred = api.auth.checkCredentials(creds, 'deletesliver', hrn)[0]
298 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
300 # attempt to use delegated credential first
301 cred = api.getDelegatedCredential(creds)
303 cred = api.getCredential()
304 threads = ThreadManager()
305 for aggregate in api.aggregates:
306 # prevent infinite loop. Dont send request back to caller
307 # unless the caller is the aggregate's SM
308 if caller_hrn == aggregate and aggregate != api.hrn:
310 interface = api.aggregates[aggregate]
311 server = api.server_proxy(interface, cred)
312 threads.run(_DeleteSliver, server, xrn, [cred], options)
313 threads.get_results()
317 # first draft at a merging SliverStatus
318 def SliverStatus(self, api, slice_xrn, creds, options):
319 def _SliverStatus(server, xrn, creds, options):
320 return server.SliverStatus(xrn, creds, options)
322 call_id = options.get('call_id')
323 if Callids().already_handled(call_id): return {}
324 # attempt to use delegated credential first
325 cred = api.getDelegatedCredential(creds)
327 cred = api.getCredential()
328 threads = ThreadManager()
329 for aggregate in api.aggregates:
330 interface = api.aggregates[aggregate]
331 server = api.server_proxy(interface, cred)
332 threads.run (_SliverStatus, server, slice_xrn, [cred], options)
333 results = [ReturnValue.get_value(result) for result in threads.get_results()]
335 # get rid of any void result - e.g. when call_id was hit, where by convention we return {}
336 results = [ result for result in results if result and result['geni_resources']]
338 # do not try to combine if there's no result
339 if not results : return {}
341 # otherwise let's merge stuff
344 # mmh, it is expected that all results carry the same urn
345 overall['geni_urn'] = results[0]['geni_urn']
346 overall['pl_login'] = results[0]['pl_login']
347 # append all geni_resources
348 overall['geni_resources'] = \
349 reduce (lambda x,y: x+y, [ result['geni_resources'] for result in results] , [])
350 overall['status'] = 'unknown'
351 if overall['geni_resources']:
352 overall['status'] = 'ready'
356 def ListSlices(self, api, creds, options):
357 call_id = options.get('call_id')
358 if Callids().already_handled(call_id): return []
360 def _ListSlices(server, creds, options):
361 return server.ListSlices(creds, options)
363 # look in cache first
364 # xxx is this really frequent enough that it is worth being cached ?
366 slices = self.cache.get('slices')
368 api.logger.debug("SliceManager.ListSlices returns from cache")
371 # get the callers hrn
372 valid_cred = api.auth.checkCredentials(creds, 'listslices', None)[0]
373 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
375 # attempt to use delegated credential first
376 cred= api.getDelegatedCredential(creds)
378 cred = api.getCredential()
379 threads = ThreadManager()
380 # fetch from aggregates
381 for aggregate in api.aggregates:
382 # prevent infinite loop. Dont send request back to caller
383 # unless the caller is the aggregate's SM
384 if caller_hrn == aggregate and aggregate != api.hrn:
386 interface = api.aggregates[aggregate]
387 server = api.server_proxy(interface, cred)
388 threads.run(_ListSlices, server, [cred], options)
391 results = [ReturnValue.get_value(result) for result in threads.get_results()]
393 for result in results:
394 slices.extend(result)
398 api.logger.debug("SliceManager.ListSlices caches value")
399 self.cache.add('slices', slices)
404 def GetTicket(self, api, xrn, creds, rspec, users, options):
405 slice_hrn, type = urn_to_hrn(xrn)
406 # get the netspecs contained within the clients rspec
407 aggregate_rspecs = {}
408 tree= etree.parse(StringIO(rspec))
409 elements = tree.findall('./network')
410 for element in elements:
411 aggregate_hrn = element.values()[0]
412 aggregate_rspecs[aggregate_hrn] = rspec
414 # get the callers hrn
415 valid_cred = api.auth.checkCredentials(creds, 'getticket', slice_hrn)[0]
416 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
418 # attempt to use delegated credential first
419 cred = api.getDelegatedCredential(creds)
421 cred = api.getCredential()
422 threads = ThreadManager()
423 for (aggregate, aggregate_rspec) in aggregate_rspecs.iteritems():
424 # xxx sounds like using call_id here would be safer
425 # prevent infinite loop. Dont send request back to caller
426 # unless the caller is the aggregate's SM
427 if caller_hrn == aggregate and aggregate != api.hrn:
430 interface = api.aggregates[aggregate]
431 server = api.server_proxy(interface, cred)
432 threads.run(server.GetTicket, xrn, [cred], aggregate_rspec, users, options)
434 results = threads.get_results()
436 # gather information from each ticket
441 for result in results:
442 agg_ticket = SfaTicket(string=result)
443 attrs = agg_ticket.get_attributes()
445 object_gid = agg_ticket.get_gid_object()
447 rspec = RSpec(agg_ticket.get_rspec())
449 rspec.version.merge(agg_ticket.get_rspec())
450 initscripts.extend(attrs.get('initscripts', []))
451 slivers.extend(attrs.get('slivers', []))
454 attributes = {'initscripts': initscripts,
457 # create a new ticket
458 ticket = SfaTicket(subject = slice_hrn)
459 ticket.set_gid_caller(api.auth.client_gid)
460 ticket.set_issuer(key=api.key, subject=api.hrn)
461 ticket.set_gid_object(object_gid)
462 ticket.set_pubkey(object_gid.get_pubkey())
463 #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
464 ticket.set_attributes(attributes)
465 ticket.set_rspec(rspec.toxml())
468 return ticket.save_to_string(save_parents=True)
470 def start_slice(self, api, xrn, creds):
471 hrn, type = urn_to_hrn(xrn)
473 # get the callers hrn
474 valid_cred = api.auth.checkCredentials(creds, 'startslice', hrn)[0]
475 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
477 # attempt to use delegated credential first
478 cred = api.getDelegatedCredential(creds)
480 cred = api.getCredential()
481 threads = ThreadManager()
482 for aggregate in api.aggregates:
483 # prevent infinite loop. Dont send request back to caller
484 # unless the caller is the aggregate's SM
485 if caller_hrn == aggregate and aggregate != api.hrn:
487 interface = api.aggregates[aggregate]
488 server = api.server_proxy(interface, cred)
489 threads.run(server.Start, xrn, cred)
490 threads.get_results()
493 def stop_slice(self, api, xrn, creds):
494 hrn, type = urn_to_hrn(xrn)
496 # get the callers hrn
497 valid_cred = api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
498 caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
500 # attempt to use delegated credential first
501 cred = api.getDelegatedCredential(creds)
503 cred = api.getCredential()
504 threads = ThreadManager()
505 for aggregate in api.aggregates:
506 # prevent infinite loop. Dont send request back to caller
507 # unless the caller is the aggregate's SM
508 if caller_hrn == aggregate and aggregate != api.hrn:
510 interface = api.aggregates[aggregate]
511 server = api.server_proxy(interface, cred)
512 threads.run(server.Stop, xrn, cred)
513 threads.get_results()
516 def reset_slice(self, api, xrn):
522 def shutdown(self, api, xrn, creds):
528 def status(self, api, xrn, creds):