9 from types import StringTypes
10 from sfa.util.namespace import *
11 from sfa.util.rspec import *
12 from sfa.util.specdict import *
13 from sfa.util.faults import *
14 from sfa.util.storage import *
15 from sfa.util.record import SfaRecord
16 from sfa.util.policy import Policy
17 from sfa.util.prefixTree import prefixTree
18 from sfa.util.debug import log
22 class Slices(SimpleStorage):
24 rspec_to_slice_tag = {'max_rate':'net_max_rate'}
26 def __init__(self, api, ttl = .5, origin_hrn=None):
30 path = self.api.config.SFA_DATA_DIR
31 filename = ".".join([self.api.interface, self.api.hrn, "slices"])
32 filepath = path + os.sep + filename
33 self.slices_file = filepath
34 SimpleStorage.__init__(self, self.slices_file)
35 self.policy = Policy(self.api)
37 self.origin_hrn = origin_hrn
39 def get_slivers(self, xrn, node=None):
40 hrn, type = urn_to_hrn(xrn)
42 slice_name = hrn_to_pl_slicename(hrn)
43 # XX Should we just call PLCAPI.GetSliceTicket(slice_name) instead
44 # of doing all of this?
45 #return self.api.GetSliceTicket(self.auth, slice_name)
47 # from PLCAPI.GetSlivers.get_slivers()
48 slice_fields = ['slice_id', 'name', 'instantiation', 'expires', 'person_ids', 'slice_tag_ids']
49 slices = self.api.plshell.GetSlices(self.api.plauth, slice_name, slice_fields)
50 # Build up list of users and slice attributes
52 all_slice_tag_ids = set()
54 person_ids.update(slice['person_ids'])
55 all_slice_tag_ids.update(slice['slice_tag_ids'])
56 person_ids = list(person_ids)
57 all_slice_tag_ids = list(all_slice_tag_ids)
58 # Get user information
59 all_persons_list = self.api.plshell.GetPersons(self.api.plauth, {'person_id':person_ids,'enabled':True}, ['person_id', 'enabled', 'key_ids'])
61 for person in all_persons_list:
62 all_persons[person['person_id']] = person
64 # Build up list of keys
66 for person in all_persons.values():
67 key_ids.update(person['key_ids'])
68 key_ids = list(key_ids)
69 # Get user account keys
70 all_keys_list = self.api.plshell.GetKeys(self.api.plauth, key_ids, ['key_id', 'key', 'key_type'])
72 for key in all_keys_list:
73 all_keys[key['key_id']] = key
74 # Get slice attributes
75 all_slice_tags_list = self.api.plshell.GetSliceTags(self.api.plauth, all_slice_tag_ids)
77 for slice_tag in all_slice_tags_list:
78 all_slice_tags[slice_tag['slice_tag_id']] = slice_tag
83 for person_id in slice['person_ids']:
84 if person_id in all_persons:
85 person = all_persons[person_id]
86 if not person['enabled']:
88 for key_id in person['key_ids']:
89 if key_id in all_keys:
90 key = all_keys[key_id]
91 keys += [{'key_type': key['key_type'],
94 # All (per-node and global) attributes for this slice
96 for slice_tag_id in slice['slice_tag_ids']:
97 if slice_tag_id in all_slice_tags:
98 slice_tags.append(all_slice_tags[slice_tag_id])
99 # Per-node sliver attributes take precedence over global
100 # slice attributes, so set them first.
101 # Then comes nodegroup slice attributes
102 # Followed by global slice attributes
103 sliver_attributes = []
106 for sliver_attribute in filter(lambda a: a['node_id'] == node['node_id'], slice_tags):
107 sliver_attributes.append(sliver_attribute['tagname'])
108 attributes.append({'tagname': sliver_attribute['tagname'],
109 'value': sliver_attribute['value']})
111 # set nodegroup slice attributes
112 for slice_tag in filter(lambda a: a['nodegroup_id'] in node['nodegroup_ids'], slice_tags):
113 # Do not set any nodegroup slice attributes for
114 # which there is at least one sliver attribute
116 if slice_tag not in slice_tags:
117 attributes.append({'tagname': slice_tag['tagname'],
118 'value': slice_tag['value']})
120 for slice_tag in filter(lambda a: a['node_id'] is None, slice_tags):
121 # Do not set any global slice attributes for
122 # which there is at least one sliver attribute
124 if slice_tag['tagname'] not in sliver_attributes:
125 attributes.append({'tagname': slice_tag['tagname'],
126 'value': slice_tag['value']})
128 # XXX Sanity check; though technically this should be a system invariant
129 # checked with an assertion
130 if slice['expires'] > MAXINT: slice['expires']= MAXINT
134 'name': slice['name'],
135 'slice_id': slice['slice_id'],
136 'instantiation': slice['instantiation'],
137 'expires': slice['expires'],
139 'attributes': attributes
144 def get_peer(self, xrn):
145 hrn, type = urn_to_hrn(xrn)
146 # Becaues of myplc federation, we first need to determine if this
147 # slice belongs to out local plc or a myplc peer. We will assume it
148 # is a local site, unless we find out otherwise
151 # get this slice's authority (site)
152 slice_authority = get_authority(hrn)
154 # get this site's authority (sfa root authority or sub authority)
155 site_authority = get_authority(slice_authority).lower()
157 # check if we are already peered with this site_authority, if so
158 peers = self.api.plshell.GetPeers(self.api.plauth, {}, ['peer_id', 'peername', 'shortname', 'hrn_root'])
159 for peer_record in peers:
160 names = [name.lower() for name in peer_record.values() if isinstance(name, StringTypes)]
161 if site_authority in names:
162 peer = peer_record['shortname']
166 def get_sfa_peer(self, xrn):
167 hrn, type = urn_to_hrn(xrn)
169 # return the authority for this hrn or None if we are the authority
171 slice_authority = get_authority(hrn)
172 site_authority = get_authority(slice_authority)
174 if site_authority != self.api.hrn:
175 sfa_peer = site_authority
181 Update the cached list of slices
183 # Reload components list
184 now = datetime.datetime.now()
185 if not self.has_key('threshold') or not self.has_key('timestamp') or \
186 now > datetime.datetime.fromtimestamp(time.mktime(time.strptime(self['threshold'], self.api.time_format))):
187 if self.api.interface in ['aggregate']:
188 self.refresh_slices_aggregate()
189 elif self.api.interface in ['slicemgr']:
190 self.refresh_slices_smgr()
192 def refresh_slices_aggregate(self):
193 slices = self.api.plshell.GetSlices(self.api.plauth, {'peer_id': None}, ['name'])
194 slice_hrns = [slicename_to_hrn(self.api.hrn, slice['name']) for slice in slices]
196 # update timestamp and threshold
197 timestamp = datetime.datetime.now()
198 hr_timestamp = timestamp.strftime(self.api.time_format)
199 delta = datetime.timedelta(hours=self.ttl)
200 threshold = timestamp + delta
201 hr_threshold = threshold.strftime(self.api.time_format)
203 slice_details = {'hrn': slice_hrns,
204 'timestamp': hr_timestamp,
205 'threshold': hr_threshold
207 self.update(slice_details)
211 def refresh_slices_smgr(self):
213 credential = self.api.getCredential()
214 for aggregate in self.api.aggregates:
217 slices = self.api.aggregates[aggregate].get_slices(credential)
218 slice_hrns.extend(slices)
221 print >> log, "%s" % (traceback.format_exc())
222 print >> log, "Error calling slices at aggregate %(aggregate)s" % locals()
224 # update timestamp and threshold
225 timestamp = datetime.datetime.now()
226 hr_timestamp = timestamp.strftime(self.api.time_format)
227 delta = datetime.timedelta(hours=self.ttl)
228 threshold = timestamp + delta
229 hr_threshold = threshold.strftime(self.api.time_format)
231 slice_details = {'hrn': slice_hrns,
232 'timestamp': hr_timestamp,
233 'threshold': hr_threshold
235 self.update(slice_details)
239 def verify_site(self, registry, credential, slice_hrn, peer, sfa_peer):
240 authority = get_authority(slice_hrn)
241 authority_urn = hrn_to_urn(authority, 'authority')
242 site_records = registry.resolve(credential, authority_urn)
245 for site_record in site_records:
246 if site_record['type'] == 'authority':
249 raise RecordNotFound(authority)
250 remote_site_id = site.pop('site_id')
252 login_base = get_leaf(authority)
253 sites = self.api.plshell.GetSites(self.api.plauth, login_base)
255 site_id = self.api.plshell.AddSite(self.api.plauth, site)
257 self.api.plshell.BindObjectToPeer(self.api.plauth, 'site', site_id, peer, remote_site_id)
258 # mark this site as an sfa peer record
260 peer_dict = {'type': 'authority', 'hrn': authority, 'peer_authority': sfa_peer, 'pointer': site_id}
261 registry.register_peer_object(credential, peer_dict)
263 site_id = sites[0]['site_id']
264 remote_site_id = sites[0]['peer_site_id']
266 #the site is alredy on the remote agg. Let us update(e.g. max_slices field) it with the latest info.
267 self.sync_site(old_site, site, peer)
270 return (site_id, remote_site_id)
272 def verify_slice(self, registry, credential, slice_hrn, site_id, remote_site_id, peer, sfa_peer):
275 authority = get_authority(slice_hrn)
276 slice_records = registry.resolve(credential, slice_hrn)
278 for record in slice_records:
279 if record['type'] in ['slice']:
280 slice_record = record
282 raise RecordNotFound(hrn)
283 slicename = hrn_to_pl_slicename(slice_hrn)
284 parts = slicename.split("_")
285 login_base = parts[0]
286 slices = self.api.plshell.GetSlices(self.api.plauth, [slicename])
289 slice_keys = ['name', 'url', 'description']
290 for key in slice_keys:
291 if key in slice_record and slice_record[key]:
292 slice_fields[key] = slice_record[key]
295 slice_id = self.api.plshell.AddSlice(self.api.plauth, slice_fields)
297 slice['slice_id'] = slice_id
299 # mark this slice as an sfa peer record
301 peer_dict = {'type': 'slice', 'hrn': slice_hrn, 'peer_authority': sfa_peer, 'pointer': slice_id}
302 registry.register_peer_object(credential, peer_dict)
304 #this belongs to a peer
306 self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', slice_id, peer, slice_record['pointer'])
307 slice['node_ids'] = []
310 slice_id = slice['slice_id']
311 site_id = slice['site_id']
312 #the slice is alredy on the remote agg. Let us update(e.g. expires field) it with the latest info.
313 self.sync_slice(slice, slice_record, peer)
315 slice['peer_slice_id'] = slice_record['pointer']
316 self.verify_persons(registry, credential, slice_record, site_id, remote_site_id, peer, sfa_peer)
320 def verify_persons(self, registry, credential, slice_record, site_id, remote_site_id, peer, sfa_peer):
321 # get the list of valid slice users from the registry and make
322 # sure they are added to the slice
323 slicename = hrn_to_pl_slicename(slice_record['hrn'])
324 researchers = slice_record.get('researcher', [])
325 for researcher in researchers:
327 person_records = registry.resolve(credential, researcher)
328 for record in person_records:
329 if record['type'] in ['user'] and record['enabled']:
330 person_record = record
331 if not person_record:
333 person_dict = person_record
336 peer_id = self.api.plshell.GetPeers(self.api.plauth, {'shortname': peer}, ['peer_id'])[0]['peer_id']
337 persons = self.api.plshell.GetPersons(self.api.plauth, {'email': [person_dict['email']], 'peer_id': peer_id}, ['person_id', 'key_ids'])
339 persons = self.api.plshell.GetPersons(self.api.plauth, [person_dict['email']], ['person_id', 'key_ids'])
344 persons = self.api.plshell.GetPersons(self.api.plauth, [person_dict['email']], ['person_id', 'key_ids'])
347 person_id=self.api.plshell.AddPerson(self.api.plauth, person_dict)
348 self.api.plshell.UpdatePerson(self.api.plauth, person_id, {'enabled' : True})
350 # mark this person as an sfa peer record
352 peer_dict = {'type': 'user', 'hrn': researcher, 'peer_authority': sfa_peer, 'pointer': person_id}
353 registry.register_peer_object(credential, peer_dict)
356 self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person_id, peer, person_dict['pointer'])
359 person_id = persons[0]['person_id']
360 key_ids = persons[0]['key_ids']
363 # if this is a peer person, we must unbind them from the peer or PLCAPI will throw
366 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'person', person_id, peer)
367 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'site', site_id, peer)
369 self.api.plshell.AddPersonToSlice(self.api.plauth, person_dict['email'], slicename)
370 self.api.plshell.AddPersonToSite(self.api.plauth, person_dict['email'], site_id)
371 if peer and not local_person:
372 self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person_id, peer, person_dict['pointer'])
374 self.api.plshell.BindObjectToPeer(self.api.plauth, 'site', site_id, peer, remote_site_id)
376 self.verify_keys(registry, credential, person_dict, key_ids, person_id, peer, local_person)
378 def verify_keys(self, registry, credential, person_dict, key_ids, person_id, peer, local_person):
379 keylist = self.api.plshell.GetKeys(self.api.plauth, key_ids, ['key'])
380 keys = [key['key'] for key in keylist]
382 #add keys that arent already there
383 key_ids = person_dict['key_ids']
384 for personkey in person_dict['keys']:
385 if personkey not in keys:
386 key = {'key_type': 'ssh', 'key': personkey}
388 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'person', person_id, peer)
389 key_id = self.api.plshell.AddPersonKey(self.api.plauth, person_dict['email'], key)
390 if peer and not local_person:
391 self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person_id, peer, person_dict['pointer'])
393 try: self.api.plshell.BindObjectToPeer(self.api.plauth, 'key', key_id, peer, key_ids.pop(0))
397 def create_slice_aggregate(self, xrn, rspec):
398 hrn, type = urn_to_hrn(xrn)
399 # Determine if this is a peer slice
400 peer = self.get_peer(hrn)
401 sfa_peer = self.get_sfa_peer(hrn)
404 # Get the slice record from sfa
405 slicename = hrn_to_pl_slicename(hrn)
408 registry = self.api.registries[self.api.hrn]
409 credential = self.api.getCredential()
411 site_id, remote_site_id = self.verify_site(registry, credential, hrn, peer, sfa_peer)
412 slice = self.verify_slice(registry, credential, hrn, site_id, remote_site_id, peer, sfa_peer)
414 # find out where this slice is currently running
415 nodelist = self.api.plshell.GetNodes(self.api.plauth, slice['node_ids'], ['hostname'])
416 hostnames = [node['hostname'] for node in nodelist]
418 # get netspec details
419 nodespecs = spec.getDictsByTagName('NodeSpec')
421 # dict in which to store slice attributes to set for the nodes
423 for nodespec in nodespecs:
424 if isinstance(nodespec['name'], list):
425 for nodename in nodespec['name']:
427 for k in nodespec.keys():
428 rspec_attribute_value = nodespec[k]
429 if (self.rspec_to_slice_tag.has_key(k)):
430 slice_tag_name = self.rspec_to_slice_tag[k]
431 nodes[nodename][slice_tag_name] = rspec_attribute_value
432 elif isinstance(nodespec['name'], StringTypes):
433 nodename = nodespec['name']
435 for k in nodespec.keys():
436 rspec_attribute_value = nodespec[k]
437 if (self.rspec_to_slice_tag.has_key(k)):
438 slice_tag_name = self.rspec_to_slice_tag[k]
439 nodes[nodename][slice_tag_name] = rspec_attribute_value
441 for k in nodespec.keys():
442 rspec_attribute_value = nodespec[k]
443 if (self.rspec_to_slice_tag.has_key(k)):
444 slice_tag_name = self.rspec_to_slice_tag[k]
445 nodes[nodename][slice_tag_name] = rspec_attribute_value
447 node_names = nodes.keys()
448 # remove nodes not in rspec
449 deleted_nodes = list(set(hostnames).difference(node_names))
450 # add nodes from rspec
451 added_nodes = list(set(node_names).difference(hostnames))
454 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'slice', slice['slice_id'], peer)
456 self.api.plshell.AddSliceToNodes(self.api.plauth, slicename, added_nodes)
458 # Add recognized slice tags
459 for node_name in node_names:
460 node = nodes[node_name]
461 for slice_tag in node.keys():
462 value = node[slice_tag]
463 if (isinstance(value, list)):
466 self.api.plshell.AddSliceTag(self.api.plauth, slicename, slice_tag, value, node_name)
468 self.api.plshell.DeleteSliceFromNodes(self.api.plauth, slicename, deleted_nodes)
470 self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', slice['slice_id'], peer, slice['peer_slice_id'])
474 def sync_site(self, old_record, new_record, peer):
475 if old_record['max_slices'] != new_record['max_slices'] or old_record['max_slivers'] != new_record['max_slivers']:
477 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'site', old_record['site_id'], peer)
478 if old_record['max_slices'] != new_record['max_slices']:
479 self.api.plshell.UpdateSite(self.api.plauth, old_record['site_id'], {'max_slices' : new_record['max_slices']})
480 if old_record['max_slivers'] != new_record['max_slivers']:
481 self.api.plshell.UpdateSite(self.api.plauth, old_record['site_id'], {'max_slivers' : new_record['max_slivers']})
483 self.api.plshell.BindObjectToPeer(self.api.plauth, 'site', old_record['site_id'], peer, old_record['peer_site_id'])
486 def sync_slice(self, old_record, new_record, peer):
487 if old_record['expires'] != new_record['expires']:
489 self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'slice', old_record['slice_id'], peer)
490 self.api.plshell.UpdateSlice(self.api.plauth, old_record['slice_id'], {'expires' : new_record['expires']})
492 self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', old_record['slice_id'], peer, old_record['peer_slice_id'])