import datetime import time import traceback import sys from types import StringTypes from sfa.util.xrn import Xrn, get_leaf, get_authority, hrn_to_urn, urn_to_hrn from sfa.util.plxrn import hrn_to_pl_slicename, hrn_to_pl_login_base from sfa.util.specdict import * from sfa.util.faults import * from sfa.util.record import SfaRecord from sfa.util.policy import Policy from sfa.plc.vlink import VLink from sfa.util.prefixTree import prefixTree from collections import defaultdict MAXINT = 2L**31-1 class Slices: rspec_to_slice_tag = {'max_rate':'net_max_rate'} def __init__(self, api, ttl = .5, origin_hrn=None): self.api = api #filepath = path + os.sep + filename self.policy = Policy(self.api) self.origin_hrn = origin_hrn self.registry = api.registries[api.hrn] self.credential = api.getCredential() self.nodes = [] self.persons = [] def get_slivers(self, xrn, node=None): hrn, type = urn_to_hrn(xrn) 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, xrn): hrn, type = urn_to_hrn(xrn) # 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 return peer def get_sfa_peer(self, xrn): hrn, type = urn_to_hrn(xrn) # 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 verify_slice_nodes(self, slice, requested_slivers, peer): nodes = self.api.plshell.GetNodes(self.api.plauth, slice['node_ids'], ['hostname']) current_slivers = [node['hostname'] for node in nodes] # remove nodes not in rspec deleted_nodes = list(set(current_slivers).difference(requested_slivers)) # add nodes from rspec added_nodes = list(set(requested_slivers).difference(current_slivers)) try: if peer: self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'slice', slice['slice_id'], peer['shortname']) self.api.plshell.AddSliceToNodes(self.api.plauth, slice['name'], added_nodes) self.api.plshell.DeleteSliceFromNodes(self.api.plauth, slice['name'], deleted_nodes) except: self.api.logger.log_exc('Failed to add/remove slice from nodes') def verify_slice_links(self, slice, links, peer=None): if not links or not nodes: return for link in links: topo_rspec = VLink.get_topo_rspec(link) def handle_peer(self, site, slice, persons, peer): if peer: # bind site try: if site: self.api.plshell.BindObjectToPeer(self.api.plauth, 'site', \ site['site_id'], peer['shortname'], slice['site_id']) except Exception,e: self.api.plshell.DeleteSite(self.api.plauth, site['site_id']) raise e # bind slice try: if slice: self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', \ slice['slice_id'], peer['shortname'], slice['slice_id']) except Exception,e: self.api.plshell.DeleteSlice(self.api.plauth, slice['slice_id']) raise e # bind persons for person in persons: try: self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', \ person['person_id'], peer['shortname'], person['peer_person_id']) for (key, remote_key_id) in zip(person['keys'], person['key_ids']): try: self.api.plshell.BindObjectToPeer(self.api.plauth, 'key',\ key['key_id'], peer['shortname'], remote_key_id) except: self.api.plshell.DeleteKey(self.api.plauth, key['key_id']) self.api.logger("failed to bind key: %s to peer: %s " % (key['key_id'], peer['shortname'])) except Exception,e: self.api.plshell.DeletePerson(self.api.plauth, person['person_id']) raise e return slice def verify_site(self, slice_xrn, slice_record={}, peer=None, sfa_peer=None): (slice_hrn, type) = urn_to_hrn(slice_xrn) site_hrn = get_authority(slice_hrn) # login base can't be longer than 20 characters slicename = hrn_to_pl_slicename(slice_hrn) authority_name = slicename.split('_')[0] login_base = authority_name[:20] sites = self.api.plshell.GetSites(self.api.plauth, login_base) if not sites: # create new site record site = {'name': 'geni.%s' % authority_name, 'abbreviated_name': authority_name, 'login_base': login_base, 'max_slices': 100, 'max_slivers': 1000, 'enabled': True, 'peer_site_id': None} if peer: site['peer_site_id'] = slice_record.get('site_id', None) site['site_id'] = self.api.plshell.AddSite(self.api.plauth, site) # exempt federated sites from monitor policies self.api.plshell.AddSiteTag(self.api.plauth, site['site_id'], 'exempt_site_until', "20200101") # is this still necessary? # add record to the local registry if sfa_peer and slice_record: peer_dict = {'type': 'authority', 'hrn': site_hrn, \ 'peer_authority': sfa_peer, 'pointer': site['site_id']} self.registry.register_peer_object(self.credential, peer_dict) else: site = sites[0] if peer: # unbind from peer so we can modify if necessary. Will bind back later self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'site', site['site_id'], peer['shortname']) return site def verify_slice(self, slice_hrn, slice_record, peer, sfa_peer): 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 = {'name': slicename, 'url': slice_record.get('url', slice_hrn), 'description': slice_record.get('description', slice_hrn)} # add the slice slice['slice_id'] = self.api.plshell.AddSlice(self.api.plauth, slice) slice['node_ids'] = [] slice['person_ids'] = [] if peer: slice['peer_slice_id'] = slice_record.get('slice_id', None) # mark this slice as an sfa peer record if sfa_peer: peer_dict = {'type': 'slice', 'hrn': slice_hrn, 'peer_authority': sfa_peer, 'pointer': slice['slice_id']} self.registry.register_peer_object(self.credential, peer_dict) else: slice = slices[0] if peer: slice['peer_slice_id'] = slice_record.get('slice_id', None) # unbind from peer so we can modify if necessary. Will bind back later self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'slice',\ slice['slice_id'], peer['shortname']) #Update existing record (e.g. expires field) it with the latest info. if slice_record and slice['expires'] != slice_record['expires']: self.api.plshell.UpdateSlice(self.api.plauth, slice['slice_id'],\ {'expires' : slice_record['expires']}) return slice #def get_existing_persons(self, users): def verify_persons(self, slice_hrn, slice_record, users, peer, sfa_peer, append=True): users_by_email = {} users_by_site = defaultdict(list) users_dict = {} for user in users: if 'append' in user and user['append'] == False: append = False if 'email' in user: users_by_email[user['email']] = user users_dict[user['email']] = user elif 'urn' in user: hrn, type = urn_to_hrn(user['urn']) username = get_leaf(hrn) login_base = get_leaf(get_authority(user['urn'])) user['username'] = username users_by_site[login_base].append(user) existing_user_ids = [] if users_by_email: # get existing users by email existing_users = self.api.plshell.GetPersons(self.api.plauth, \ {'email': users_by_email.keys()}, ['person_id', 'key_ids', 'email']) existing_user_ids.extend([user['email'] for user in existing_users]) if users_by_site: # get a list of user sites (based on requeste user urns site_list = self.api.plshell.GetSites(self.api.plauth, users_by_site.keys(), \ ['site_id', 'login_base', 'person_ids']) sites = {} site_user_ids = [] # get all existing users at these sites for site in site_list: sites[site['site_id']] = site site_user_ids.extend(site['person_ids']) existing_site_persons_list = self.api.plshell.GetPersons(self.api.plauth, \ site_user_ids, ['person_id', 'key_ids', 'email', 'site_ids']) # all requested users are either existing users or new (added) users for login_base in users_by_site: requested_site_users = users_by_site[login_base] for requested_user in requested_site_users: user_found = False for existing_user in existing_site_persons_list: for site_id in existing_user['site_ids']: site = sites[site_id] if login_base == site['login_base'] and \ existing_user['email'].startswith(requested_user['username']): existing_user_ids.append(existing_user['email']) users_dict[existing_user['email']] = requested_user user_found = True break if user_found: break if user_found == False: fake_email = requested_user['username'] + '@geni.net' users_dict[fake_email] = requested_user # requested slice users requested_user_ids = users_dict.keys() # existing slice users existing_slice_users_filter = {'person_id': slice_record.get('person_ids', [])} existing_slice_users = self.api.plshell.GetPersons(self.api.plauth, \ existing_slice_users_filter, ['person_id', 'key_ids', 'email']) existing_slice_user_ids = [user['email'] for user in existing_slice_users] # users to be added, removed or updated added_user_ids = set(requested_user_ids).difference(existing_user_ids) added_slice_user_ids = set(requested_user_ids).difference(existing_slice_user_ids) removed_user_ids = set(existing_slice_user_ids).difference(requested_user_ids) updated_user_ids = set(existing_slice_user_ids).intersection(requested_user_ids) # Remove stale users (only if we are not appending). if append == False: for removed_user_id in removed_user_ids: self.api.plshell.DeletePersonFromSlice(self.api.plauth, removed_user_id, slice_record['name']) # update_existing users updated_users_list = [user for user in existing_slice_users if user['email'] in \ updated_user_ids] self.verify_keys(existing_slice_users, updated_users_list, peer, append) added_persons = [] # add new users for added_user_id in added_user_ids: added_user = users_dict[added_user_id] hrn, type = urn_to_hrn(added_user['urn']) person = { 'first_name': added_user.get('first_name', hrn), 'last_name': added_user.get('last_name', hrn), 'email': added_user_id, 'peer_person_id': None, 'keys': [], 'key_ids': added_user.get('key_ids', []), } person['person_id'] = self.api.plshell.AddPerson(self.api.plauth, person) if peer: person['peer_person_id'] = added_user['person_id'] added_persons.append(person) # enable the account self.api.plshell.UpdatePerson(self.api.plauth, person['person_id'], {'enabled': True}) # add person to site self.api.plshell.AddPersonToSite(self.api.plauth, added_user_id, login_base) for key_string in added_user.get('keys', []): key = {'key':key_string, 'key_type':'ssh'} key['key_id'] = self.api.plshell.AddPersonKey(self.api.plauth, person['person_id'], key) person['keys'].append(key) # add the registry record if sfa_peer: peer_dict = {'type': 'user', 'hrn': hrn, 'peer_authority': sfa_peer, \ 'pointer': person['person_id']} self.registry.register_peer_object(self.credential, peer_dict) for added_slice_user_id in added_slice_user_ids.union(added_user_ids): # add person to the slice self.api.plshell.AddPersonToSlice(self.api.plauth, added_slice_user_id, slice_record['name']) # if this is a peer record then it should already be bound to a peer. # no need to return worry about it getting bound later return added_persons def verify_keys(self, persons, users, peer, append=True): # existing keys key_ids = [] for person in persons: key_ids.extend(person['key_ids']) keylist = self.api.plshell.GetKeys(self.api.plauth, key_ids, ['key_id', 'key']) keydict = {} for key in keylist: keydict[key['key']] = key['key_id'] existing_keys = keydict.keys() persondict = {} for person in persons: persondict[person['email']] = person # add new keys requested_keys = [] updated_persons = [] for user in users: user_keys = user.get('keys', []) updated_persons.append(user) for key_string in user_keys: requested_keys.append(key_string) if key_string not in existing_keys: key = {'key': key_string, 'key_type': 'ssh'} try: if peer: person = persondict[user['email']] self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'person', person['person_id'], peer['shortname']) key['key_id'] = self.api.plshell.AddPersonKey(self.api.plauth, user['email'], key) if peer: key_index = user_keys.index(key['key']) remote_key_id = user['key_ids'][key_index] self.api.plshell.BindObjectToPeer(self.api.plauth, 'key', key['key_id'], peer['shortname'], remote_key_id) finally: if peer: self.api.plshell.BindObjectToPeer(self.api.plauth, 'person', person['person_id'], peer['shortname'], user['person_id']) # remove old keys (only if we are not appending) if append == False: removed_keys = set(existing_keys).difference(requested_keys) for existing_key_id in keydict: if keydict[existing_key_id] in removed_keys: try: if peer: self.api.plshell.UnBindObjectFromPeer(self.api.plauth, 'key', existing_key_id, peer['shortname']) self.api.plshell.DeleteKey(self.api.plauth, existing_key_id) except: pass def verify_slice_attributes(self, slice, requested_slice_attributes): # get list of attributes users ar able to manage slice_attributes = self.api.plshell.GetTagTypes(self.api.plauth, {'category': '*slice*', '|roles': ['user']}) valid_slice_attribute_names = [attribute['tagname'] for attribute in slice_attributes] # get sliver attributes added_slice_attributes = [] removed_slice_attributes = [] ignored_slice_attribute_names = [] existing_slice_attributes = self.api.plshell.GetSliceTags(self.api.plauth, {'slice_id': slice['slice_id']}) # get attributes that should be removed for slice_tag in existing_slice_attributes: if slice_tag['tagname'] in ignored_slice_attribute_names: # If a slice already has a admin only role it was probably given to them by an # admin, so we should ignore it. ignored_slice_attribute_names.append(slice_tag['tagname']) else: # If an existing slice attribute was not found in the request it should # be removed attribute_found=False for requested_attribute in requested_slice_attributes: if requested_attribute['name'] == slice_tag['tagname'] and \ requested_attribute['value'] == slice_tag['value']: attribute_found=True break if not attribute_found: removed_slice_attributes.append(slice_tag) # get attributes that should be added: for requested_attribute in requested_slice_attributes: # if the requested attribute wasn't found we should add it if requested_attribute['name'] in valid_slice_attribute_names: attribute_found = False for existing_attribute in existing_slice_attributes: if requested_attribute['name'] == existing_attribute['tagname'] and \ requested_attribute['value'] == existing_attribute['value']: attribute_found=True break if not attribute_found: added_slice_attributes.append(requested_attribute) # remove stale attributes for attribute in removed_slice_attributes: try: self.api.plshell.DeleteSliceTag(self.api.plauth, attribute['slice_tag_id']) except Exception, e: self.api.logger.warn('Failed to remove sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\ % (name, value, node_id, str(e))) # add requested_attributes for attribute in added_slice_attributes: try: name, value, node_id = attribute['name'], attribute['value'], attribute.get('node_id', None) self.api.plshell.AddSliceTag(self.api.plauth, slice['name'], name, value, node_id) except Exception, e: self.api.logger.warn('Failed to add sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\ % (name, value, node_id, str(e))) def create_slice_aggregate(self, xrn, rspec): hrn, type = urn_to_hrn(xrn) # 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 registry = self.api.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)) try: 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) finally: if peer: self.api.plshell.BindObjectToPeer(self.api.plauth, 'slice', slice['slice_id'], peer, slice['peer_slice_id']) return 1