from types import StringTypes from collections import defaultdict import sys from sfa.util.sfalogging import logger from sfa.util.xrn import Xrn, get_leaf, get_authority, urn_to_hrn #from sfa.util.policy import Policy from sfa.util.xrn import Xrn from sfa.rspecs.rspec import RSpec from sfa.plc.vlink import VLink from sfa.util.plxrn import hrn_to_pl_slicename MAXINT = 2L**31-1 class PlSlices: rspec_to_slice_tag = {'max_rate':'net_max_rate'} def __init__(self, driver): self.driver = driver 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.driver.shell.GetSliceTicket(self.auth, slice_name) # from PLCAPI.GetSlivers.get_slivers() slice_fields = ['slice_id', 'name', 'instantiation', 'expires', 'person_ids', 'slice_tag_ids'] slices = self.driver.shell.GetSlices(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.driver.shell.GetPersons({'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.driver.shell.GetKeys(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.driver.shell.GetSliceTags(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 print>>sys.stderr, " \r\n \r\n \tplslices.py get_peer slice_authority " # 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() print>>sys.stderr, " \r\n \r\n \tplslices.py get_peer slice_authority %s site_authority %s" %(slice_authority,site_authority) # check if we are already peered with this site_authority, if so peers = self.driver.shell.GetPeers({}, ['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.driver.hrn: sfa_peer = site_authority return sfa_peer def verify_slice_nodes(self, slice, requested_slivers, peer): nodes = self.driver.shell.GetNodes(slice['node_ids'], ['node_id', 'hostname', 'interface_ids']) 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.driver.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer['shortname']) self.driver.shell.AddSliceToNodes(slice['name'], added_nodes) self.driver.shell.DeleteSliceFromNodes(slice['name'], deleted_nodes) except: logger.log_exc('Failed to add/remove slice from nodes') return nodes def free_egre_key(self): used = set() for tag in self.driver.shell.GetSliceTags({'tagname': 'egre_key'}): used.add(int(tag['value'])) for i in range(1, 256): if i not in used: key = i break else: raise KeyError("No more EGRE keys available") return str(key) def verify_slice_links(self, slice, requested_links, nodes): # nodes is undefined here if not requested_links: return # build dict of nodes nodes_dict = {} interface_ids = [] for node in nodes: nodes_dict[node['node_id']] = node interface_ids.extend(node['interface_ids']) # build dict of interfaces interfaces = self.driver.shell.GetInterfaces(interface_ids) interfaces_dict = {} for interface in interfaces: interfaces_dict[interface['interface_id']] = interface slice_tags = [] # set egre key slice_tags.append({'name': 'egre_key', 'value': self.free_egre_key()}) # set netns slice_tags.append({'name': 'netns', 'value': '1'}) # set cap_net_admin # need to update the attribute string? slice_tags.append({'name': 'capabilities', 'value': 'CAP_NET_ADMIN'}) for link in requested_links: # get the ip address of the first node in the link ifname1 = Xrn(link['interface1']['component_id']).get_leaf() (node_raw, device) = ifname1.split(':') node_id = int(node_raw.replace('node', '')) node = nodes_dict[node_id] if1 = interfaces_dict[node['interface_ids'][0]] ipaddr = if1['ip'] topo_rspec = VLink.get_topo_rspec(link, ipaddr) # set topo_rspec tag slice_tags.append({'name': 'topo_rspec', 'value': str([topo_rspec]), 'node_id': node_id}) # set vini_topo tag slice_tags.append({'name': 'vini_topo', 'value': 'manual', 'node_id': node_id}) #self.driver.shell.AddSliceTag(slice['name'], 'topo_rspec', str([topo_rspec]), node_id) self.verify_slice_attributes(slice, slice_tags, {'append': True}, admin=True) def handle_peer(self, site, slice, persons, peer): if peer: # bind site try: if site: self.driver.shell.BindObjectToPeer('site', site['site_id'], peer['shortname'], slice['site_id']) except Exception,e: self.driver.shell.DeleteSite(site['site_id']) raise e # bind slice try: if slice: self.driver.shell.BindObjectToPeer('slice', slice['slice_id'], peer['shortname'], slice['slice_id']) except Exception,e: self.driver.shell.DeleteSlice(slice['slice_id']) raise e # bind persons for person in persons: try: self.driver.shell.BindObjectToPeer('person', person['person_id'], peer['shortname'], person['peer_person_id']) for (key, remote_key_id) in zip(person['keys'], person['key_ids']): try: self.driver.shell.BindObjectToPeer( 'key', key['key_id'], peer['shortname'], remote_key_id) except: self.driver.shell.DeleteKey(key['key_id']) logger("failed to bind key: %s to peer: %s " % (key['key_id'], peer['shortname'])) except Exception,e: self.driver.shell.DeletePerson(person['person_id']) raise e return slice def verify_site(self, slice_xrn, slice_record={}, peer=None, sfa_peer=None, options={}): (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.driver.shell.GetSites(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.driver.shell.AddSite(site) # exempt federated sites from monitor policies self.driver.shell.AddSiteTag(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.driver.shell.UnBindObjectFromPeer('site', site['site_id'], peer['shortname']) return site def verify_slice(self, slice_hrn, slice_record, peer, sfa_peer, options={}): slicename = hrn_to_pl_slicename(slice_hrn) parts = slicename.split("_") login_base = parts[0] slices = self.driver.shell.GetSlices([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.driver.shell.AddSlice(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.driver.shell.UnBindObjectFromPeer('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.driver.shell.UpdateSlice( 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, options={}): users_by_email = {} users_by_site = defaultdict(list) users_dict = {} for user in users: hrn, type = urn_to_hrn(user['urn']) username = get_leaf(hrn) login_base = get_leaf(get_authority(user['urn'])) user['username'] = username user['site'] = login_base if 'email' in user: users_by_email[user['email']] = user users_dict[user['email']] = user else: users_by_site[user['site']].append(user) # start building a list of existing users existing_user_ids = [] existing_user_ids_filter = [] if users_by_email: existing_user_ids_filter.extend(users_by_email.keys()) if users_by_site: for login_base in users_by_site: users = users_by_site[login_base] for user in users: existing_user_ids_filter.append(user['username']+'@geni.net') if existing_user_ids_filter: # get existing users by email existing_users = self.driver.shell.GetPersons({'email': existing_user_ids_filter}, ['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.driver.shell.GetSites(users_by_site.keys(), \ ['site_id', 'login_base', 'person_ids']) # get all existing users at these sites sites = {} site_user_ids = [] for site in site_list: sites[site['site_id']] = site site_user_ids.extend(site['person_ids']) existing_site_persons_list = self.driver.shell.GetPersons(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']: if site_id in sites: 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.driver.shell.GetPersons(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). # Append by default. append = options.get('append', True) if append == False: for removed_user_id in removed_user_ids: self.driver.shell.DeletePersonFromSlice(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, options) 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.driver.shell.AddPerson(person) if peer: person['peer_person_id'] = added_user['person_id'] added_persons.append(person) # enable the account self.driver.shell.UpdatePerson(person['person_id'], {'enabled': True}) # add person to site self.driver.shell.AddPersonToSite(added_user_id, added_user['site']) for key_string in added_user.get('keys', []): key = {'key':key_string, 'key_type':'ssh'} key['key_id'] = self.driver.shell.AddPersonKey(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.driver.shell.AddPersonToSlice(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, options={}): # existing keys key_ids = [] for person in persons: key_ids.extend(person['key_ids']) keylist = self.driver.shell.GetKeys(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.driver.shell.UnBindObjectFromPeer('person', person['person_id'], peer['shortname']) key['key_id'] = self.driver.shell.AddPersonKey(user['email'], key) if peer: key_index = user_keys.index(key['key']) remote_key_id = user['key_ids'][key_index] self.driver.shell.BindObjectToPeer('key', key['key_id'], peer['shortname'], remote_key_id) finally: if peer: self.driver.shell.BindObjectToPeer('person', person['person_id'], peer['shortname'], user['person_id']) # remove old keys (only if we are not appending) append = options.get('append', True) 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.driver.shell.UnBindObjectFromPeer('key', existing_key_id, peer['shortname']) self.driver.shell.DeleteKey(existing_key_id) except: pass def verify_slice_attributes(self, slice, requested_slice_attributes, options={}, admin=False): append = options.get('append', True) # get list of attributes users ar able to manage filter = {'category': '*slice*'} if not admin: filter['|roles'] = ['user'] slice_attributes = self.driver.shell.GetTagTypes(filter) 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.driver.shell.GetSliceTags({'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 and not append: 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.driver.shell.DeleteSliceTag(attribute['slice_tag_id']) except Exception, e: 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: self.driver.shell.AddSliceTag(slice['name'], attribute['name'], attribute['value'], attribute.get('node_id', None)) except Exception, e: logger.warn('Failed to add sliver attribute. name: %s, value: %s, node_id: %s\nCause:%s'\ % (name, value, node_id, str(e)))