### $Id$ ### $URL$ import datetime import time import traceback import sys from types import StringTypes from sfa.util.misc 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 GeniRecord 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 class Slices(SimpleStorage): def __init__(self, api, ttl = .5, caller_cred=None): self.api = api self.ttl = ttl self.threshold = None path = self.api.config.SFA_BASE_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.caller_cred=caller_cred 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() arg_list = [credential] request_hash = self.api.key.compute_hash(arg_list) for aggregate in aggregates: try: slices = aggregates[aggregate].get_slices(credential, request_hash) slice_hrns.extend(slices) except: 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 delete_slice(self, hrn): if self.api.interface in ['aggregate']: self.delete_slice_aggregate(hrn) elif self.api.interface in ['slicemgr']: self.delete_slice_smgr(hrn) def delete_slice_aggregate(self, hrn): slicename = hrn_to_pl_slicename(hrn) slices = self.api.plshell.GetSlices(self.api.plauth, {'name': slicename}) if not slices: return 1 slice = slices[0] # determine if this is a peer slice peer = self.get_peer(hrn) if peer: self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'slice', slice['slice_id'], peer) self.api.plshell.DeleteSliceFromNodes(self.api.plauth, slicename, slice['node_ids']) if peer: self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', slice['slice_id'], peer, slice['peer_slice_id']) return 1 def delete_slice_smgr(self, hrn): credential = self.api.getCredential() caller_cred = self.caller_cred aggregates = Aggregates(self.api) arg_list = [credential, hrn] request_hash = self.api.key.compute_hash(arg_list) for aggregate in aggregates: try: aggregates[aggregate].delete_slice(credential, hrn, request_hash, caller_cred) except: print >> log, "Error calling list nodes at aggregate %s" % aggregate traceback.print_exc(log) exc_type, exc_value, exc_traceback = sys.exc_info() print exc_type, exc_value, exc_traceback def create_slice(self, hrn, rspec): # check our slice policy before we procede whitelist = self.policy['slice_whitelist'] blacklist = self.policy['slice_blacklist'] if whitelist and hrn not in whitelist or \ blacklist and hrn in blacklist: policy_file = self.policy.policy_file print >> log, "Slice %(hrn)s not allowed by policy %(policy_file)s" % locals() return 1 if self.api.interface in ['aggregate']: self.create_slice_aggregate(hrn, rspec) elif self.api.interface in ['slicemgr']: self.create_slice_smgr(hrn, rspec) def verify_site(self, registry, credential, slice_hrn, peer, sfa_peer): authority = get_authority(slice_hrn) arg_list = [credential, authority] request_hash = self.api.key.compute_hash(arg_list) site_records = registry.resolve(credential, authority, request_hash) 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} arg_list = [credential] request_hash = self.api.key.compute_hash(arg_list) registry.register_peer_object(credential, peer_dict, request_hash) pass 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) arg_list = [credential, slice_hrn] request_hash = self.api.key.compute_hash(arg_list) slice_records = registry.resolve(credential, slice_hrn, request_hash) 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], ['slice_id', 'node_ids', 'site_id']) 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} arg_list = [credential] request_hash = self.api.key.compute_hash(arg_list) registry.register_peer_object(credential, peer_dict, request_hash) pass #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'] 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: arg_list = [credential, researcher] request_hash = self.api.key.compute_hash(arg_list) person_record = {} person_records = registry.resolve(credential, researcher, request_hash) for record in person_records: if record['type'] in ['user']: person_record = record if not person_record: pass person_dict = person_record 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']) 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} arg_list = [credential] request_hash = self.api.key.compute_hash(arg_list) registry.register_peer_object(credential, peer_dict, request_hash) pass 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: self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person_id, peer, person_dict['pointer']) 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) def verify_keys(self, registry, credential, person_dict, key_ids, person_id, peer): 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: self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person_id, peer, person_dict['pointer']) 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') nodes = [] for nodespec in nodespecs: if isinstance(nodespec['name'], list): nodes.extend(nodespec['name']) elif isinstance(nodespec['name'], StringTypes): nodes.append(nodespec['name']) # remove nodes not in rspec deleted_nodes = list(set(hostnames).difference(nodes)) # add nodes from rspec added_nodes = list(set(nodes).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) 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 create_slice_smgr(self, hrn, rspec): spec = RSpec() tempspec = RSpec() spec.parseString(rspec) slicename = hrn_to_pl_slicename(hrn) specDict = spec.toDict() if specDict.has_key('RSpec'): specDict = specDict['RSpec'] if specDict.has_key('start_time'): start_time = specDict['start_time'] else: start_time = 0 if specDict.has_key('end_time'): end_time = specDict['end_time'] else: end_time = 0 rspecs = {} aggregates = Aggregates(self.api) credential = self.api.getCredential() # split the netspecs into individual rspecs netspecs = spec.getDictsByTagName('NetSpec') for netspec in netspecs: net_hrn = netspec['name'] resources = {'start_time': start_time, 'end_time': end_time, 'networks': netspec} resourceDict = {'RSpec': resources} tempspec.parseDict(resourceDict) rspecs[net_hrn] = tempspec.toxml() # send each rspec to the appropriate aggregate/sm caller_cred = self.caller_cred for net_hrn in rspecs: try: # if we are directly connected to the aggregate then we can just send them the rspec # if not, then we may be connected to an sm thats connected to the aggregate if net_hrn in aggregates: # send the whloe rspec to the local aggregate if net_hrn in [self.api.hrn]: arg_list = [credential,hrn,rspec] request_hash = self.api.key.compute_hash(arg_list) aggregates[net_hrn].create_slice(credential, hrn, rspec, request_hash, caller_cred) else: arg_list = [credential,hrn,rspecs[net_hrn]] request_hash = self.api.key.compute_hash(arg_list) aggregates[net_hrn].create_slice(credential, hrn, rspecs[net_hrn], request_hash, caller_cred) else: # lets forward this rspec to a sm that knows about the network arg_list = [credential, net_hrn] request_hash = self.api.compute_hash(arg_list) for aggregate in aggregates: network_found = aggregates[aggregate].get_aggregates(credential, net_hrn, request_hash) if network_networks: arg_list = [credential, hrn, rspecs[net_hrn]] request_hash = self.api.key.compute_hash(arg_list) aggregates[aggregate].create_slice(credential, hrn, rspecs[net_hrn], request_hash, caller_cred) except: print >> log, "Error creating slice %(hrn)s at aggregate %(net_hrn)s" % locals() traceback.print_exc() return 1 def start_slice(self, hrn): if self.api.interface in ['aggregate']: self.start_slice_aggregate(hrn) elif self.api.interface in ['slicemgr']: self.start_slice_smgr(hrn) def start_slice_aggregate(self, hrn): slicename = hrn_to_pl_slicename(hrn) slices = self.api.plshell.GetSlices(self.api.plauth, {'name': slicename}, ['slice_id']) if not slices: raise RecordNotFound(hrn) slice_id = slices[0] attributes = self.api.plshell.GetSliceAttributes(self.api.plauth, {'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id']) attribute_id = attreibutes[0]['slice_attribute_id'] self.api.plshell.UpdateSliceAttribute(self.api.plauth, attribute_id, "1" ) return 1 def start_slice_smgr(self, hrn): credential = self.api.getCredential() aggregates = Aggregates(self.api) for aggregate in aggregates: aggregates[aggregate].start_slice(credential, hrn) return 1 def stop_slice(self, hrn): if self.api.interface in ['aggregate']: self.stop_slice_aggregate(hrn) elif self.api.interface in ['slicemgr']: self.stop_slice_smgr(hrn) def stop_slice_aggregate(self, hrn): slicename = hrn_to_pl_slicename(hrn) slices = self.api.plshell.GetSlices(self.api.plauth, {'name': slicename}, ['slice_id']) if not slices: raise RecordNotFound(hrn) slice_id = slices[0]['slice_id'] attributes = self.api.plshell.GetSliceAttributes(self.api.plauth, {'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id']) attribute_id = attributes[0]['slice_attribute_id'] self.api.plshell.UpdateSliceAttribute(self.api.plauth, attribute_id, "0") return 1 def stop_slice_smgr(self, hrn): credential = self.api.getCredential() aggregates = Aggregates(self.api) arg_list = [credential, hrn] request_hash = self.api.key.compute_hash(arg_list) for aggregate in aggregates: aggregates[aggregate].stop_slice(credential, hrn, request_hash)