### $Id$ ### $URL$ import datetime import time import traceback import sys from types import StringTypes from sfa.util.namespace import * from sfa.util.rspec import * from sfa.util.specdict import * from sfa.util.faults import * from sfa.util.storage import * from sfa.util.record import SfaRecord from sfa.util.policy import Policy from sfa.util.prefixTree import prefixTree from sfa.util.debug import log from sfa.server.aggregate import Aggregates from sfa.server.registry import Registries MAXINT = 2L**31-1 class Slices(SimpleStorage): rspec_to_slice_tag = {'max_rate':'net_max_rate'} def __init__(self, api, ttl = .5, origin_hrn=None): self.api = api self.ttl = ttl self.threshold = None path = self.api.config.SFA_DATA_DIR filename = ".".join([self.api.interface, self.api.hrn, "slices"]) filepath = path + os.sep + filename self.slices_file = filepath SimpleStorage.__init__(self, self.slices_file) self.policy = Policy(self.api) self.load() self.origin_hrn = origin_hrn def get_slivers(self, hrn, node=None): slice_name = hrn_to_pl_slicename(hrn) # XX Should we just call PLCAPI.GetSliceTicket(slice_name) instead # of doing all of this? #return self.api.GetSliceTicket(self.auth, slice_name) # from PLCAPI.GetSlivers.get_slivers() slice_fields = ['slice_id', 'name', 'instantiation', 'expires', 'person_ids', 'slice_tag_ids'] slices = self.api.plshell.GetSlices(self.api.plauth, slice_name, slice_fields) # Build up list of users and slice attributes person_ids = set() all_slice_tag_ids = set() for slice in slices: person_ids.update(slice['person_ids']) all_slice_tag_ids.update(slice['slice_tag_ids']) person_ids = list(person_ids) all_slice_tag_ids = list(all_slice_tag_ids) # Get user information all_persons_list = self.api.plshell.GetPersons(self.api.plauth, {'person_id':person_ids,'enabled':True}, ['person_id', 'enabled', 'key_ids']) all_persons = {} for person in all_persons_list: all_persons[person['person_id']] = person # Build up list of keys key_ids = set() for person in all_persons.values(): key_ids.update(person['key_ids']) key_ids = list(key_ids) # Get user account keys all_keys_list = self.api.plshell.GetKeys(self.api.plauth, key_ids, ['key_id', 'key', 'key_type']) all_keys = {} for key in all_keys_list: all_keys[key['key_id']] = key # Get slice attributes all_slice_tags_list = self.api.plshell.GetSliceTags(self.api.plauth, all_slice_tag_ids) all_slice_tags = {} for slice_tag in all_slice_tags_list: all_slice_tags[slice_tag['slice_tag_id']] = slice_tag slivers = [] for slice in slices: keys = [] for person_id in slice['person_ids']: if person_id in all_persons: person = all_persons[person_id] if not person['enabled']: continue for key_id in person['key_ids']: if key_id in all_keys: key = all_keys[key_id] keys += [{'key_type': key['key_type'], 'key': key['key']}] attributes = [] # All (per-node and global) attributes for this slice slice_tags = [] for slice_tag_id in slice['slice_tag_ids']: if slice_tag_id in all_slice_tags: slice_tags.append(all_slice_tags[slice_tag_id]) # Per-node sliver attributes take precedence over global # slice attributes, so set them first. # Then comes nodegroup slice attributes # Followed by global slice attributes sliver_attributes = [] if node is not None: for sliver_attribute in filter(lambda a: a['node_id'] == node['node_id'], slice_tags): sliver_attributes.append(sliver_attribute['tagname']) attributes.append({'tagname': sliver_attribute['tagname'], 'value': sliver_attribute['value']}) # set nodegroup slice attributes for slice_tag in filter(lambda a: a['nodegroup_id'] in node['nodegroup_ids'], slice_tags): # Do not set any nodegroup slice attributes for # which there is at least one sliver attribute # already set. if slice_tag not in slice_tags: attributes.append({'tagname': slice_tag['tagname'], 'value': slice_tag['value']}) for slice_tag in filter(lambda a: a['node_id'] is None, slice_tags): # Do not set any global slice attributes for # which there is at least one sliver attribute # already set. if slice_tag['tagname'] not in sliver_attributes: attributes.append({'tagname': slice_tag['tagname'], 'value': slice_tag['value']}) # XXX Sanity check; though technically this should be a system invariant # checked with an assertion if slice['expires'] > MAXINT: slice['expires']= MAXINT slivers.append({ 'hrn': hrn, 'name': slice['name'], 'slice_id': slice['slice_id'], 'instantiation': slice['instantiation'], 'expires': slice['expires'], 'keys': keys, 'attributes': attributes }) return slivers def get_peer(self, hrn): # Becaues of myplc federation, we first need to determine if this # slice belongs to out local plc or a myplc peer. We will assume it # is a local site, unless we find out otherwise peer = None # get this slice's authority (site) slice_authority = get_authority(hrn) # get this site's authority (sfa root authority or sub authority) site_authority = get_authority(slice_authority).lower() # check if we are already peered with this site_authority, if so peers = self.api.plshell.GetPeers(self.api.plauth, {}, ['peer_id', 'peername', 'shortname', 'hrn_root']) for peer_record in peers: names = [name.lower() for name in peer_record.values() if isinstance(name, StringTypes)] if site_authority in names: peer = peer_record['shortname'] return peer def get_sfa_peer(self, hrn): # return the authority for this hrn or None if we are the authority sfa_peer = None slice_authority = get_authority(hrn) site_authority = get_authority(slice_authority) if site_authority != self.api.hrn: sfa_peer = site_authority return sfa_peer def refresh(self): """ Update the cached list of slices """ # Reload components list now = datetime.datetime.now() if not self.has_key('threshold') or not self.has_key('timestamp') or \ now > datetime.datetime.fromtimestamp(time.mktime(time.strptime(self['threshold'], self.api.time_format))): if self.api.interface in ['aggregate']: self.refresh_slices_aggregate() elif self.api.interface in ['slicemgr']: self.refresh_slices_smgr() def refresh_slices_aggregate(self): slices = self.api.plshell.GetSlices(self.api.plauth, {'peer_id': None}, ['name']) slice_hrns = [slicename_to_hrn(self.api.hrn, slice['name']) for slice in slices] # update timestamp and threshold timestamp = datetime.datetime.now() hr_timestamp = timestamp.strftime(self.api.time_format) delta = datetime.timedelta(hours=self.ttl) threshold = timestamp + delta hr_threshold = threshold.strftime(self.api.time_format) slice_details = {'hrn': slice_hrns, 'timestamp': hr_timestamp, 'threshold': hr_threshold } self.update(slice_details) self.write() def refresh_slices_smgr(self): slice_hrns = [] aggregates = Aggregates(self.api) credential = self.api.getCredential() for aggregate in aggregates: success = False # request hash is optional so lets try the call without it try: slices = aggregates[aggregate].get_slices(credential) slice_hrns.extend(slices) success = True except: print >> log, "%s" % (traceback.format_exc()) print >> log, "Error calling slices at aggregate %(aggregate)s" % locals() # try sending the request hash if the previous call failed if not success: arg_list = [credential] try: slices = aggregates[aggregate].get_slices(credential) slice_hrns.extend(slices) success = True except: print >> log, "%s" % (traceback.format_exc()) print >> log, "Error calling slices at aggregate %(aggregate)s" % locals() # update timestamp and threshold timestamp = datetime.datetime.now() hr_timestamp = timestamp.strftime(self.api.time_format) delta = datetime.timedelta(hours=self.ttl) threshold = timestamp + delta hr_threshold = threshold.strftime(self.api.time_format) slice_details = {'hrn': slice_hrns, 'timestamp': hr_timestamp, 'threshold': hr_threshold } self.update(slice_details) self.write() def verify_site(self, registry, credential, slice_hrn, peer, sfa_peer): authority = get_authority(slice_hrn) site_records = registry.resolve(credential, authority) site = {} for site_record in site_records: if site_record['type'] == 'authority': site = site_record if not site: raise RecordNotFound(authority) remote_site_id = site.pop('site_id') login_base = get_leaf(authority) sites = self.api.plshell.GetSites(self.api.plauth, login_base) if not sites: site_id = self.api.plshell.AddSite(self.api.plauth, site) if peer: self.api.plshell.BindObjectToPeer(self.api.plauth, 'site', site_id, peer, remote_site_id) # mark this site as an sfa peer record if sfa_peer: peer_dict = {'type': 'authority', 'hrn': authority, 'peer_authority': sfa_peer, 'pointer': site_id} registry.register_peer_object(credential, peer_dict) else: site_id = sites[0]['site_id'] remote_site_id = sites[0]['peer_site_id'] return (site_id, remote_site_id) def verify_slice(self, registry, credential, slice_hrn, site_id, remote_site_id, peer, sfa_peer): slice = {} slice_record = None authority = get_authority(slice_hrn) slice_records = registry.resolve(credential, slice_hrn) for record in slice_records: if record['type'] in ['slice']: slice_record = record if not slice_record: raise RecordNotFound(hrn) slicename = hrn_to_pl_slicename(slice_hrn) parts = slicename.split("_") login_base = parts[0] slices = self.api.plshell.GetSlices(self.api.plauth, [slicename]) if not slices: slice_fields = {} slice_keys = ['name', 'url', 'description'] for key in slice_keys: if key in slice_record and slice_record[key]: slice_fields[key] = slice_record[key] # add the slice slice_id = self.api.plshell.AddSlice(self.api.plauth, slice_fields) slice = slice_fields slice['slice_id'] = slice_id # mark this slice as an sfa peer record if sfa_peer: peer_dict = {'type': 'slice', 'hrn': slice_hrn, 'peer_authority': sfa_peer, 'pointer': slice_id} registry.register_peer_object(credential, peer_dict) #this belongs to a peer if peer: self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', slice_id, peer, slice_record['pointer']) slice['node_ids'] = [] else: slice = slices[0] slice_id = slice['slice_id'] site_id = slice['site_id'] #the slice is alredy on the remote agg. Let us update(e.g. expires field) it with the latest info. self.sync_slice(slice, slice_record, peer) slice['peer_slice_id'] = slice_record['pointer'] self.verify_persons(registry, credential, slice_record, site_id, remote_site_id, peer, sfa_peer) return slice def verify_persons(self, registry, credential, slice_record, site_id, remote_site_id, peer, sfa_peer): # get the list of valid slice users from the registry and make # sure they are added to the slice slicename = hrn_to_pl_slicename(slice_record['hrn']) researchers = slice_record.get('researcher', []) for researcher in researchers: person_record = {} person_records = registry.resolve(credential, researcher) for record in person_records: if record['type'] in ['user']: person_record = record if not person_record: pass person_dict = person_record local_person=False if peer: peer_id = self.api.plshell.GetPeers(self.api.plauth, {'shortname': peer}, ['peer_id'])[0]['peer_id'] persons = self.api.plshell.GetPersons(self.api.plauth, {'email': [person_dict['email']], 'peer_id': peer_id}, ['person_id', 'key_ids']) if not persons: persons = self.api.plshell.GetPersons(self.api.plauth, [person_dict['email']], ['person_id', 'key_ids']) if persons: local_person=True else: persons = self.api.plshell.GetPersons(self.api.plauth, [person_dict['email']], ['person_id', 'key_ids']) if not persons: person_id=self.api.plshell.AddPerson(self.api.plauth, person_dict) self.api.plshell.UpdatePerson(self.api.plauth, person_id, {'enabled' : True}) # mark this person as an sfa peer record if sfa_peer: peer_dict = {'type': 'user', 'hrn': researcher, 'peer_authority': sfa_peer, 'pointer': person_id} registry.register_peer_object(credential, peer_dict) if peer: self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person_id, peer, person_dict['pointer']) key_ids = [] else: person_id = persons[0]['person_id'] key_ids = persons[0]['key_ids'] # if this is a peer person, we must unbind them from the peer or PLCAPI will throw # an error if peer: self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'person', person_id, peer) self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'site', site_id, peer) self.api.plshell.AddPersonToSlice(self.api.plauth, person_dict['email'], slicename) self.api.plshell.AddPersonToSite(self.api.plauth, person_dict['email'], site_id) if peer and not local_person: self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person_id, peer, person_dict['pointer']) if peer: self.api.plshell.BindObjectToPeer(self.api.plauth, 'site', site_id, peer, remote_site_id) self.verify_keys(registry, credential, person_dict, key_ids, person_id, peer, local_person) def verify_keys(self, registry, credential, person_dict, key_ids, person_id, peer, local_person): keylist = self.api.plshell.GetKeys(self.api.plauth, key_ids, ['key']) keys = [key['key'] for key in keylist] #add keys that arent already there key_ids = person_dict['key_ids'] for personkey in person_dict['keys']: if personkey not in keys: key = {'key_type': 'ssh', 'key': personkey} if peer: self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'person', person_id, peer) key_id = self.api.plshell.AddPersonKey(self.api.plauth, person_dict['email'], key) if peer and not local_person: self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person_id, peer, person_dict['pointer']) if peer: try: self.api.plshell.BindObjectToPeer(self.api.plauth, 'key', key_id, peer, key_ids.pop(0)) except: pass def create_slice_aggregate(self, hrn, rspec): # Determine if this is a peer slice peer = self.get_peer(hrn) sfa_peer = self.get_sfa_peer(hrn) spec = RSpec(rspec) # Get the slice record from sfa slicename = hrn_to_pl_slicename(hrn) slice = {} slice_record = None registries = Registries(self.api) registry = registries[self.api.hrn] credential = self.api.getCredential() site_id, remote_site_id = self.verify_site(registry, credential, hrn, peer, sfa_peer) slice = self.verify_slice(registry, credential, hrn, site_id, remote_site_id, peer, sfa_peer) # find out where this slice is currently running nodelist = self.api.plshell.GetNodes(self.api.plauth, slice['node_ids'], ['hostname']) hostnames = [node['hostname'] for node in nodelist] # get netspec details nodespecs = spec.getDictsByTagName('NodeSpec') # dict in which to store slice attributes to set for the nodes nodes = {} for nodespec in nodespecs: if isinstance(nodespec['name'], list): for nodename in nodespec['name']: nodes[nodename] = {} for k in nodespec.keys(): rspec_attribute_value = nodespec[k] if (self.rspec_to_slice_tag.has_key(k)): slice_tag_name = self.rspec_to_slice_tag[k] nodes[nodename][slice_tag_name] = rspec_attribute_value elif isinstance(nodespec['name'], StringTypes): nodename = nodespec['name'] nodes[nodename] = {} for k in nodespec.keys(): rspec_attribute_value = nodespec[k] if (self.rspec_to_slice_tag.has_key(k)): slice_tag_name = self.rspec_to_slice_tag[k] nodes[nodename][slice_tag_name] = rspec_attribute_value for k in nodespec.keys(): rspec_attribute_value = nodespec[k] if (self.rspec_to_slice_tag.has_key(k)): slice_tag_name = self.rspec_to_slice_tag[k] nodes[nodename][slice_tag_name] = rspec_attribute_value node_names = nodes.keys() # remove nodes not in rspec deleted_nodes = list(set(hostnames).difference(node_names)) # add nodes from rspec added_nodes = list(set(node_names).difference(hostnames)) if peer: self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'slice', slice['slice_id'], peer) self.api.plshell.AddSliceToNodes(self.api.plauth, slicename, added_nodes) # Add recognized slice tags for node_name in node_names: node = nodes[node_name] for slice_tag in node.keys(): value = node[slice_tag] if (isinstance(value, list)): value = value[0] self.api.plshell.AddSliceTag(self.api.plauth, slicename, slice_tag, value, node_name) self.api.plshell.DeleteSliceFromNodes(self.api.plauth, slicename, deleted_nodes) if peer: self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', slice['slice_id'], peer, slice['peer_slice_id']) return 1 def sync_slice(self, old_record, new_record, peer): if old_record['expires'] != new_record['expires']: if peer: self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'slice', old_record['slice_id'], peer) self.api.plshell.UpdateSlice(self.api.plauth, old_record['slice_id'], {'expires' : new_record['expires']}) if peer: self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', old_record['slice_id'], peer, old_record['peer_slice_id']) return 1