X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=sfa%2Fplc%2Fpldriver.py;h=b9db9b295b60f67fd593b8c3ee079e2f10a130d9;hb=3d51e29695f79b143974f5cf7b2e104d89626ba4;hp=af3b213e938a8c5a4e516e09d163ff779c6a54ea;hpb=4fbc1c51ef8033e5305156ded6b8a3f6c9d921bf;p=sfa.git diff --git a/sfa/plc/pldriver.py b/sfa/plc/pldriver.py index af3b213e..b9db9b29 100644 --- a/sfa/plc/pldriver.py +++ b/sfa/plc/pldriver.py @@ -1,100 +1,287 @@ +import time +import datetime # -from sfa.util.faults import MissingSfaInfo +from sfa.util.faults import MissingSfaInfo, UnknownSfaType, \ + RecordNotFound, SfaNotImplemented, SliverDoesNotExist + from sfa.util.sfalogging import logger -from sfa.util.table import SfaTable from sfa.util.defaultdict import defaultdict +from sfa.util.sfatime import utcparse, datetime_to_string, datetime_to_epoch +from sfa.util.xrn import hrn_to_urn, get_leaf, urn_to_sliver_id +from sfa.util.cache import Cache -from sfa.util.xrn import hrn_to_urn -from sfa.util.plxrn import slicename_to_hrn, hostname_to_hrn, hrn_to_pl_slicename, hrn_to_pl_login_base +# one would think the driver should not need to mess with the SFA db, but.. +from sfa.storage.alchemy import dbsession +from sfa.storage.model import RegRecord + +# used to be used in get_ticket +#from sfa.trust.sfaticket import SfaTicket + +from sfa.rspecs.version_manager import VersionManager +from sfa.rspecs.rspec import RSpec + +# the driver interface, mostly provides default behaviours +from sfa.managers.driver import Driver from sfa.plc.plshell import PlShell +import sfa.plc.peers as peers +from sfa.plc.plaggregate import PlAggregate +from sfa.plc.plslices import PlSlices +from sfa.util.plxrn import slicename_to_hrn, hostname_to_hrn, hrn_to_pl_slicename, hrn_to_pl_login_base + def list_to_dict(recs, key): """ convert a list of dictionaries into a dictionary keyed on the specified dictionary key """ - keys = [rec[key] for rec in recs] - return dict(zip(keys, recs)) + return dict ( [ (rec[key],rec) for rec in recs ] ) + +# +# PlShell is just an xmlrpc serverproxy where methods +# can be sent as-is; it takes care of authentication +# from the global config +# +class PlDriver (Driver): -class PlDriver (PlShell): + # the cache instance is a class member so it survives across incoming requests + cache = None def __init__ (self, config): - PlShell.__init__ (self, config) + Driver.__init__ (self, config) + self.shell = PlShell (config) + self.cache=None + if config.SFA_AGGREGATE_CACHING: + if PlDriver.cache is None: + PlDriver.cache = Cache() + self.cache = PlDriver.cache - self.hrn = config.SFA_INTERFACE_HRN - # xxx thgen fixme - use SfaTable hardwired for now - # will need to extend generic to support multiple storage systems - #self.SfaTable = SfaTable - # Initialize the PLC shell only if SFA wraps a myPLC - rspec_type = config.get_aggregate_type() - assert (rspec_type == 'pl' or rspec_type == 'vini' or \ - rspec_type == 'eucalyptus' or rspec_type == 'max') + ######################################## + ########## registry oriented + ######################################## + + ########## disabled users + def is_enabled (self, record): + # the incoming record was augmented already, so 'enabled' should be set + if record['type'] == 'user': + return record['enabled'] + # only users can be disabled + return True + + def augment_records_with_testbed_info (self, sfa_records): + return self.fill_record_info (sfa_records) + + ########## + def register (self, sfa_record, hrn, pub_key): + type = sfa_record['type'] + pl_record = self.sfa_fields_to_pl_fields(type, hrn, sfa_record) + + if type == 'authority': + sites = self.shell.GetSites([pl_record['login_base']]) + if not sites: + pointer = self.shell.AddSite(pl_record) + else: + pointer = sites[0]['site_id'] + + elif type == 'slice': + acceptable_fields=['url', 'instantiation', 'name', 'description'] + for key in pl_record.keys(): + if key not in acceptable_fields: + pl_record.pop(key) + slices = self.shell.GetSlices([pl_record['name']]) + if not slices: + pointer = self.shell.AddSlice(pl_record) + else: + pointer = slices[0]['slice_id'] + + elif type == 'user': + persons = self.shell.GetPersons([sfa_record['email']]) + if not persons: + pointer = self.shell.AddPerson(dict(sfa_record)) + else: + pointer = persons[0]['person_id'] + + if 'enabled' in sfa_record and sfa_record['enabled']: + self.shell.UpdatePerson(pointer, {'enabled': sfa_record['enabled']}) + # add this person to the site only if she is being added for the first + # time by sfa and doesont already exist in plc + if not persons or not persons[0]['site_ids']: + login_base = get_leaf(sfa_record['authority']) + self.shell.AddPersonToSite(pointer, login_base) + + # What roles should this user have? + roles=[] + if 'roles' in sfa_record: + # if specified in xml, but only low-level roles + roles = [ role for role in sfa_record['roles'] if role in ['user','tech'] ] + # at least user if no other cluse could be found + if not roles: + roles=['user'] + for role in roles: + self.shell.AddRoleToPerson(role, pointer) + # Add the user's key + if pub_key: + self.shell.AddPersonKey(pointer, {'key_type' : 'ssh', 'key' : pub_key}) + + elif type == 'node': + login_base = hrn_to_pl_login_base(sfa_record['authority']) + nodes = self.shell.GetNodes([pl_record['hostname']]) + if not nodes: + pointer = self.shell.AddNode(login_base, pl_record) + else: + pointer = nodes[0]['node_id'] + + return pointer + + ########## + # xxx actually old_sfa_record comes filled with plc stuff as well in the original code + def update (self, old_sfa_record, new_sfa_record, hrn, new_key): + pointer = old_sfa_record['pointer'] + type = old_sfa_record['type'] + + # new_key implemented for users only + if new_key and type not in [ 'user' ]: + raise UnknownSfaType(type) + + if (type == "authority"): + self.shell.UpdateSite(pointer, new_sfa_record) + + elif type == "slice": + pl_record=self.sfa_fields_to_pl_fields(type, hrn, new_sfa_record) + if 'name' in pl_record: + pl_record.pop('name') + self.shell.UpdateSlice(pointer, pl_record) + + elif type == "user": + # SMBAKER: UpdatePerson only allows a limited set of fields to be + # updated. Ideally we should have a more generic way of doing + # this. I copied the field names from UpdatePerson.py... + update_fields = {} + all_fields = new_sfa_record + for key in all_fields.keys(): + if key in ['first_name', 'last_name', 'title', 'email', + 'password', 'phone', 'url', 'bio', 'accepted_aup', + 'enabled']: + update_fields[key] = all_fields[key] + self.shell.UpdatePerson(pointer, update_fields) + + if new_key: + # must check this key against the previous one if it exists + persons = self.shell.GetPersons([pointer], ['key_ids']) + person = persons[0] + keys = person['key_ids'] + keys = self.shell.GetKeys(person['key_ids']) + + # Delete all stale keys + key_exists = False + for key in keys: + if new_key != key['key']: + self.shell.DeleteKey(key['key_id']) + else: + key_exists = True + if not key_exists: + self.shell.AddPersonKey(pointer, {'key_type': 'ssh', 'key': new_key}) + + elif type == "node": + self.shell.UpdateNode(pointer, new_sfa_record) + + return True + + + ########## + def remove (self, sfa_record): + type=sfa_record['type'] + pointer=sfa_record['pointer'] + if type == 'user': + persons = self.shell.GetPersons(pointer) + # only delete this person if he has site ids. if he doesnt, it probably means + # he was just removed from a site, not actually deleted + if persons and persons[0]['site_ids']: + self.shell.DeletePerson(pointer) + elif type == 'slice': + if self.shell.GetSlices(pointer): + self.shell.DeleteSlice(pointer) + elif type == 'node': + if self.shell.GetNodes(pointer): + self.shell.DeleteNode(pointer) + elif type == 'authority': + if self.shell.GetSites(pointer): + self.shell.DeleteSite(pointer) + + return True + + + + ## - # Convert SFA fields to PLC fields for use when registering up updating + # Convert SFA fields to PLC fields for use when registering or updating # registry record in the PLC database # - # @param type type of record (user, slice, ...) - # @param hrn human readable name - # @param sfa_fields dictionary of SFA fields - # @param pl_fields dictionary of PLC fields (output) - def sfa_fields_to_pl_fields(self, type, hrn, record): - - def convert_ints(tmpdict, int_fields): - for field in int_fields: - if field in tmpdict: - tmpdict[field] = int(tmpdict[field]) + def sfa_fields_to_pl_fields(self, type, hrn, sfa_record): pl_record = {} - #for field in record: - # pl_record[field] = record[field] if type == "slice": - if not "instantiation" in pl_record: - pl_record["instantiation"] = "plc-instantiated" pl_record["name"] = hrn_to_pl_slicename(hrn) - if "url" in record: - pl_record["url"] = record["url"] - if "description" in record: - pl_record["description"] = record["description"] - if "expires" in record: - pl_record["expires"] = int(record["expires"]) + if "instantiation" in sfa_record: + pl_record['instantiation']=sfa_record['instantiation'] + else: + pl_record["instantiation"] = "plc-instantiated" + if "url" in sfa_record: + pl_record["url"] = sfa_record["url"] + if "description" in sfa_record: + pl_record["description"] = sfa_record["description"] + if "expires" in sfa_record: + date = utcparse(sfa_record['expires']) + expires = datetime_to_epoch(date) + pl_record["expires"] = expires elif type == "node": if not "hostname" in pl_record: - if not "hostname" in record: + # fetch from sfa_record + if "hostname" not in sfa_record: raise MissingSfaInfo("hostname") - pl_record["hostname"] = record["hostname"] - if not "model" in pl_record: + pl_record["hostname"] = sfa_record["hostname"] + if "model" in sfa_record: + pl_record["model"] = sfa_record["model"] + else: pl_record["model"] = "geni" elif type == "authority": pl_record["login_base"] = hrn_to_pl_login_base(hrn) - - if not "name" in pl_record: + if "name" not in sfa_record: pl_record["name"] = hrn - - if not "abbreviated_name" in pl_record: + if "abbreviated_name" not in sfa_record: pl_record["abbreviated_name"] = hrn - - if not "enabled" in pl_record: + if "enabled" not in sfa_record: pl_record["enabled"] = True - - if not "is_public" in pl_record: + if "is_public" not in sfa_record: pl_record["is_public"] = True return pl_record + #################### + def fill_record_info(self, records): + """ + Given a (list of) SFA record, fill in the PLC specific + and SFA specific fields in the record. + """ + if not isinstance(records, list): + records = [records] + + self.fill_record_pl_info(records) + self.fill_record_hrns(records) + self.fill_record_sfa_info(records) + return records + def fill_record_pl_info(self, records): """ Fill in the planetlab specific fields of a SFA record. This involves calling the appropriate PLC method to retrieve the database record for the object. - - PLC data is filled into the pl_info field of the record. - + @param record: record to fill in field (in/out param) """ # get ids by type @@ -111,16 +298,16 @@ class PlDriver (PlShell): # get pl records nodes, sites, slices, persons, keys = {}, {}, {}, {}, {} if node_ids: - node_list = self.GetNodes(node_ids) + node_list = self.shell.GetNodes(node_ids) nodes = list_to_dict(node_list, 'node_id') if site_ids: - site_list = self.GetSites(site_ids) + site_list = self.shell.GetSites(site_ids) sites = list_to_dict(site_list, 'site_id') if slice_ids: - slice_list = self.GetSlices(slice_ids) + slice_list = self.shell.GetSlices(slice_ids) slices = list_to_dict(slice_list, 'slice_id') if person_ids: - person_list = self.GetPersons(person_ids) + person_list = self.shell.GetPersons(person_ids) persons = list_to_dict(person_list, 'person_id') for person in persons: key_ids.extend(persons[person]['key_ids']) @@ -129,7 +316,7 @@ class PlDriver (PlShell): 'slice': slices, 'user': persons} if key_ids: - key_list = self.GetKeys(key_ids) + key_list = self.shell.GetKeys(key_ids) keys = list_to_dict(key_list, 'key_id') # fill record info @@ -153,9 +340,6 @@ class PlDriver (PlShell): pubkeys = [keys[key_id]['key'] for key_id in record['key_ids'] if key_id in keys] record['keys'] = pubkeys - # fill in record hrns - records = self.fill_record_hrns(records) - return records def fill_record_hrns(self, records): @@ -180,16 +364,16 @@ class PlDriver (PlShell): # get pl records slices, persons, sites, nodes = {}, {}, {}, {} if site_ids: - site_list = self.GetSites(site_ids, ['site_id', 'login_base']) + site_list = self.shell.GetSites(site_ids, ['site_id', 'login_base']) sites = list_to_dict(site_list, 'site_id') if person_ids: - person_list = self.GetPersons(person_ids, ['person_id', 'email']) + person_list = self.shell.GetPersons(person_ids, ['person_id', 'email']) persons = list_to_dict(person_list, 'person_id') if slice_ids: - slice_list = self.GetSlices(slice_ids, ['slice_id', 'name']) + slice_list = self.shell.GetSlices(slice_ids, ['slice_id', 'name']) slices = list_to_dict(slice_list, 'slice_id') if node_ids: - node_list = self.GetNodes(node_ids, ['node_id', 'hostname']) + node_list = self.shell.GetNodes(node_ids, ['node_id', 'hostname']) nodes = list_to_dict(node_list, 'node_id') # convert ids to hrns @@ -227,11 +411,15 @@ class PlDriver (PlShell): if site_id in sites] site_hrns = [".".join([auth_hrn, lbase]) for lbase in login_bases] record['sites'] = site_hrns + + if 'expires' in record: + date = utcparse(record['expires']) + datestring = datetime_to_string(date) + record['expires'] = datestring return records - # aggregates is basically api.aggregates - def fill_record_sfa_info(self, records, aggregates): + def fill_record_sfa_info(self, records): def startswith(prefix, values): return [value for value in values if value.startswith(prefix)] @@ -250,7 +438,7 @@ class PlDriver (PlShell): site_pis = {} if site_ids: pi_filter = {'|roles': ['pi'], '|site_ids': site_ids} - pi_list = self.GetPersons(pi_filter, ['person_id', 'site_ids']) + pi_list = self.shell.GetPersons(pi_filter, ['person_id', 'site_ids']) for pi in pi_list: # we will need the pi's hrns also person_ids.append(pi['person_id']) @@ -267,22 +455,19 @@ class PlDriver (PlShell): # we'll replace pl ids (person_ids) with hrns from the sfa records # we obtain - # get the sfa records - # xxx thgen fixme - use SfaTable hardwired for now - # table = self.SfaTable() - table = SfaTable() + # get the registry records person_list, persons = [], {} - person_list = table.find({'type': 'user', 'pointer': person_ids}) + person_list = dbsession.query (RegRecord).filter(RegRecord.pointer.in_(person_ids)) # create a hrns keyed on the sfa record's pointer. - # Its possible for multiple records to have the same pointer so + # Its possible for multiple records to have the same pointer so # the dict's value will be a list of hrns. persons = defaultdict(list) for person in person_list: - persons[person['pointer']].append(person) + persons[person.pointer].append(person) # get the pl records pl_person_list, pl_persons = [], {} - pl_person_list = self.GetPersons(person_ids, ['person_id', 'roles']) + pl_person_list = self.shell.GetPersons(person_ids, ['person_id', 'roles']) pl_persons = list_to_dict(pl_person_list, 'person_id') # fill sfa info @@ -292,13 +477,14 @@ class PlDriver (PlShell): # continue sfa_info = {} type = record['type'] + logger.info("fill_record_sfa_info - incoming record typed %s"%type) if (type == "slice"): # all slice users are researchers record['geni_urn'] = hrn_to_urn(record['hrn'], 'slice') record['PI'] = [] record['researcher'] = [] for person_id in record.get('person_ids', []): - hrns = [person['hrn'] for person in persons[person_id]] + hrns = [person.hrn for person in persons[person_id]] record['researcher'].extend(hrns) # pis at the slice's site @@ -306,16 +492,13 @@ class PlDriver (PlShell): pl_pis = site_pis[record['site_id']] pi_ids = [pi['person_id'] for pi in pl_pis] for person_id in pi_ids: - hrns = [person['hrn'] for person in persons[person_id]] + hrns = [person.hrn for person in persons[person_id]] record['PI'].extend(hrns) record['geni_creator'] = record['PI'] elif (type.startswith("authority")): record['url'] = None - if record['hrn'] in aggregates: - - record['url'] = aggregates[record['hrn']].get_url() - + logger.info("fill_record_sfa_info - authority xherex") if record['pointer'] != -1: record['PI'] = [] record['operator'] = [] @@ -324,7 +507,7 @@ class PlDriver (PlShell): if pointer not in persons or pointer not in pl_persons: # this means there is not sfa or pl record for this user continue - hrns = [person['hrn'] for person in persons[pointer]] + hrns = [person.hrn for person in persons[pointer]] roles = pl_persons[pointer]['roles'] if 'pi' in roles: record['PI'].extend(hrns) @@ -338,70 +521,328 @@ class PlDriver (PlShell): # xxx TODO: URI, LatLong, IP, DNS elif (type == "user"): + logger.info('setting user.email') sfa_info['email'] = record.get("email", "") sfa_info['geni_urn'] = hrn_to_urn(record['hrn'], 'user') sfa_info['geni_certificate'] = record['gid'] # xxx TODO: PostalAddress, Phone record.update(sfa_info) - def fill_record_info(self, records, aggregates): - """ - Given a SFA record, fill in the PLC specific and SFA specific - fields in the record. - """ - if not isinstance(records, list): - records = [records] - - self.fill_record_pl_info(records) - self.fill_record_sfa_info(records, aggregates) - def update_membership_list(self, oldRecord, record, listName, addFunc, delFunc): - # get a list of the HRNs that are members of the old and new records - if oldRecord: - oldList = oldRecord.get(listName, []) + #################### + # plcapi works by changes, compute what needs to be added/deleted + def update_relation (self, subject_type, target_type, subject_id, target_ids): + # hard-wire the code for slice/user for now, could be smarter if needed + if subject_type =='slice' and target_type == 'user': + subject=self.shell.GetSlices (subject_id)[0] + current_target_ids = subject['person_ids'] + add_target_ids = list ( set (target_ids).difference(current_target_ids)) + del_target_ids = list ( set (current_target_ids).difference(target_ids)) + logger.debug ("subject_id = %s (type=%s)"%(subject_id,type(subject_id))) + for target_id in add_target_ids: + self.shell.AddPersonToSlice (target_id,subject_id) + logger.debug ("add_target_id = %s (type=%s)"%(target_id,type(target_id))) + for target_id in del_target_ids: + logger.debug ("del_target_id = %s (type=%s)"%(target_id,type(target_id))) + self.shell.DeletePersonFromSlice (target_id, subject_id) else: - oldList = [] - newList = record.get(listName, []) - - # if the lists are the same, then we don't have to update anything - if (oldList == newList): - return - - # build a list of the new person ids, by looking up each person to get - # their pointer - newIdList = [] - # xxx thgen fixme - use SfaTable hardwired for now - #table = self.SfaTable() - table = SfaTable() - records = table.find({'type': 'user', 'hrn': newList}) - for rec in records: - newIdList.append(rec['pointer']) - - # build a list of the old person ids from the person_ids field - if oldRecord: - oldIdList = oldRecord.get("person_ids", []) - containerId = oldRecord.get_pointer() - else: - # if oldRecord==None, then we are doing a Register, instead of an - # update. - oldIdList = [] - containerId = record.get_pointer() - - # add people who are in the new list, but not the oldList - for personId in newIdList: - if not (personId in oldIdList): - addFunc(personId, containerId) - - # remove people who are in the old list, but not the new list - for personId in oldIdList: - if not (personId in newIdList): - delFunc(personId, containerId) - - def update_membership(self, oldRecord, record): - if record.type == "slice": - self.update_membership_list(oldRecord, record, 'researcher', - self.AddPersonToSlice, - self.DeletePersonFromSlice) - elif record.type == "authority": - # xxx TODO - pass + logger.info('unexpected relation to maintain, %s -> %s'%(subject_type,target_type)) + + + ######################################## + ########## aggregate oriented + ######################################## + + def testbed_name (self): return "myplc" + + # 'geni_request_rspec_versions' and 'geni_ad_rspec_versions' are mandatory + def aggregate_version (self): + version_manager = VersionManager() + ad_rspec_versions = [] + request_rspec_versions = [] + for rspec_version in version_manager.versions: + if rspec_version.content_type in ['*', 'ad']: + ad_rspec_versions.append(rspec_version.to_dict()) + if rspec_version.content_type in ['*', 'request']: + request_rspec_versions.append(rspec_version.to_dict()) + return { + 'testbed':self.testbed_name(), + 'geni_request_rspec_versions': request_rspec_versions, + 'geni_ad_rspec_versions': ad_rspec_versions, + } + + def list_slices (self, creds, options): + # look in cache first + if self.cache: + slices = self.cache.get('slices') + if slices: + logger.debug("PlDriver.list_slices returns from cache") + return slices + + # get data from db + slices = self.shell.GetSlices({'peer_id': None}, ['name']) + slice_hrns = [slicename_to_hrn(self.hrn, slice['name']) for slice in slices] + slice_urns = [hrn_to_urn(slice_hrn, 'slice') for slice_hrn in slice_hrns] + + # cache the result + if self.cache: + logger.debug ("PlDriver.list_slices stores value in cache") + self.cache.add('slices', slice_urns) + + return slice_urns + + # first 2 args are None in case of resource discovery + def list_resources (self, slice_urn, slice_hrn, creds, options): + cached_requested = options.get('cached', True) + + version_manager = VersionManager() + # get the rspec's return format from options + rspec_version = version_manager.get_version(options.get('geni_rspec_version')) + version_string = "rspec_%s" % (rspec_version) + + #panos adding the info option to the caching key (can be improved) + if options.get('info'): + version_string = version_string + "_"+options.get('info', 'default') + + # look in cache first + if cached_requested and self.cache and not slice_hrn: + rspec = self.cache.get(version_string) + if rspec: + logger.debug("PlDriver.ListResources: returning cached advertisement") + return rspec + + #panos: passing user-defined options + #print "manager options = ",options + aggregate = PlAggregate(self) + rspec = aggregate.get_rspec(slice_xrn=slice_urn, version=rspec_version, + options=options) + + # cache the result + if self.cache and not slice_hrn: + logger.debug("PlDriver.ListResources: stores advertisement in cache") + self.cache.add(version_string, rspec) + + return rspec + + def sliver_status (self, slice_urn, slice_hrn): + # find out where this slice is currently running + slicename = hrn_to_pl_slicename(slice_hrn) + + slices = self.shell.GetSlices([slicename], ['slice_id', 'node_ids','person_ids','name','expires']) + if len(slices) == 0: + raise SliverDoesNotExist("%s (used %s as slicename internally)" % (slice_hrn, slicename)) + slice = slices[0] + + # report about the local nodes only + nodes = self.shell.GetNodes({'node_id':slice['node_ids'],'peer_id':None}, + ['node_id', 'hostname', 'site_id', 'boot_state', 'last_contact']) + + if len(nodes) == 0: + raise SliverDoesNotExist("You have not allocated any slivers here") + + site_ids = [node['site_id'] for node in nodes] + + result = {} + top_level_status = 'unknown' + if nodes: + top_level_status = 'ready' + result['geni_urn'] = slice_urn + result['pl_login'] = slice['name'] + result['pl_expires'] = datetime_to_string(utcparse(slice['expires'])) + + resources = [] + for node in nodes: + res = {} + res['pl_hostname'] = node['hostname'] + res['pl_boot_state'] = node['boot_state'] + res['pl_last_contact'] = node['last_contact'] + if node['last_contact'] is not None: + + res['pl_last_contact'] = datetime_to_string(utcparse(node['last_contact'])) + sliver_id = urn_to_sliver_id(slice_urn, slice['slice_id'], node['node_id']) + res['geni_urn'] = sliver_id + if node['boot_state'] == 'boot': + res['geni_status'] = 'ready' + else: + res['geni_status'] = 'failed' + top_level_status = 'failed' + + res['geni_error'] = '' + + resources.append(res) + + result['geni_status'] = top_level_status + result['geni_resources'] = resources + return result + + def create_sliver (self, slice_urn, slice_hrn, creds, rspec_string, users, options): + + aggregate = PlAggregate(self) + slices = PlSlices(self) + peer = slices.get_peer(slice_hrn) + sfa_peer = slices.get_sfa_peer(slice_hrn) + slice_record=None + if users: + slice_record = users[0].get('slice_record', {}) + + # parse rspec + rspec = RSpec(rspec_string) + requested_attributes = rspec.version.get_slice_attributes() + + # ensure site record exists + site = slices.verify_site(slice_hrn, slice_record, peer, sfa_peer, options=options) + # ensure slice record exists + slice = slices.verify_slice(slice_hrn, slice_record, peer, sfa_peer, options=options) + # ensure person records exists + persons = slices.verify_persons(slice_hrn, slice, users, peer, sfa_peer, options=options) + # ensure slice attributes exists + slices.verify_slice_attributes(slice, requested_attributes, options=options) + + # add/remove slice from nodes + requested_slivers = [node.get('component_name') for node in rspec.version.get_nodes_with_slivers()] + nodes = slices.verify_slice_nodes(slice, requested_slivers, peer) + + # add/remove links links + slices.verify_slice_links(slice, rspec.version.get_link_requests(), nodes) + + # handle MyPLC peer association. + # only used by plc and ple. + slices.handle_peer(site, slice, persons, peer) + + return aggregate.get_rspec(slice_xrn=slice_urn, version=rspec.version) + + def delete_sliver (self, slice_urn, slice_hrn, creds, options): + slicename = hrn_to_pl_slicename(slice_hrn) + slices = self.shell.GetSlices({'name': slicename}) + if not slices: + return 1 + slice = slices[0] + + # determine if this is a peer slice + # xxx I wonder if this would not need to use PlSlices.get_peer instead + # in which case plc.peers could be deprecated as this here + # is the only/last call to this last method in plc.peers + peer = peers.get_peer(self, slice_hrn) + try: + if peer: + self.shell.UnBindObjectFromPeer('slice', slice['slice_id'], peer) + self.shell.DeleteSliceFromNodes(slicename, slice['node_ids']) + finally: + if peer: + self.shell.BindObjectToPeer('slice', slice['slice_id'], peer, slice['peer_slice_id']) + return 1 + + def renew_sliver (self, slice_urn, slice_hrn, creds, expiration_time, options): + slicename = hrn_to_pl_slicename(slice_hrn) + slices = self.shell.GetSlices({'name': slicename}, ['slice_id']) + if not slices: + raise RecordNotFound(slice_hrn) + slice = slices[0] + requested_time = utcparse(expiration_time) + record = {'expires': int(datetime_to_epoch(requested_time))} + try: + self.shell.UpdateSlice(slice['slice_id'], record) + return True + except: + return False + + # remove the 'enabled' tag + def start_slice (self, slice_urn, slice_hrn, creds): + slicename = hrn_to_pl_slicename(slice_hrn) + slices = self.shell.GetSlices({'name': slicename}, ['slice_id']) + if not slices: + raise RecordNotFound(slice_hrn) + slice_id = slices[0]['slice_id'] + slice_tags = self.shell.GetSliceTags({'slice_id': slice_id, 'tagname': 'enabled'}, ['slice_tag_id']) + # just remove the tag if it exists + if slice_tags: + self.shell.DeleteSliceTag(slice_tags[0]['slice_tag_id']) + return 1 + + # set the 'enabled' tag to 0 + def stop_slice (self, slice_urn, slice_hrn, creds): + slicename = hrn_to_pl_slicename(slice_hrn) + slices = self.shell.GetSlices({'name': slicename}, ['slice_id']) + if not slices: + raise RecordNotFound(slice_hrn) + slice_id = slices[0]['slice_id'] + slice_tags = self.shell.GetSliceTags({'slice_id': slice_id, 'tagname': 'enabled'}) + if not slice_tags: + self.shell.AddSliceTag(slice_id, 'enabled', '0') + elif slice_tags[0]['value'] != "0": + tag_id = slice_tags[0]['slice_tag_id'] + self.shell.UpdateSliceTag(tag_id, '0') + return 1 + + def reset_slice (self, slice_urn, slice_hrn, creds): + raise SfaNotImplemented ("reset_slice not available at this interface") + + # xxx this code is quite old and has not run for ages + # it is obviously totally broken and needs a rewrite + def get_ticket (self, slice_urn, slice_hrn, creds, rspec_string, options): + raise SfaNotImplemented,"PlDriver.get_ticket needs a rewrite" +# please keep this code for future reference +# slices = PlSlices(self) +# peer = slices.get_peer(slice_hrn) +# sfa_peer = slices.get_sfa_peer(slice_hrn) +# +# # get the slice record +# credential = api.getCredential() +# interface = api.registries[api.hrn] +# registry = api.server_proxy(interface, credential) +# records = registry.Resolve(xrn, credential) +# +# # make sure we get a local slice record +# record = None +# for tmp_record in records: +# if tmp_record['type'] == 'slice' and \ +# not tmp_record['peer_authority']: +# #Error (E0602, GetTicket): Undefined variable 'SliceRecord' +# slice_record = SliceRecord(dict=tmp_record) +# if not record: +# raise RecordNotFound(slice_hrn) +# +# # similar to CreateSliver, we must verify that the required records exist +# # at this aggregate before we can issue a ticket +# # parse rspec +# rspec = RSpec(rspec_string) +# requested_attributes = rspec.version.get_slice_attributes() +# +# # ensure site record exists +# site = slices.verify_site(slice_hrn, slice_record, peer, sfa_peer) +# # ensure slice record exists +# slice = slices.verify_slice(slice_hrn, slice_record, peer, sfa_peer) +# # ensure person records exists +# # xxx users is undefined in this context +# persons = slices.verify_persons(slice_hrn, slice, users, peer, sfa_peer) +# # ensure slice attributes exists +# slices.verify_slice_attributes(slice, requested_attributes) +# +# # get sliver info +# slivers = slices.get_slivers(slice_hrn) +# +# if not slivers: +# raise SliverDoesNotExist(slice_hrn) +# +# # get initscripts +# initscripts = [] +# data = { +# 'timestamp': int(time.time()), +# 'initscripts': initscripts, +# 'slivers': slivers +# } +# +# # create the ticket +# object_gid = record.get_gid_object() +# new_ticket = SfaTicket(subject = object_gid.get_subject()) +# new_ticket.set_gid_caller(api.auth.client_gid) +# new_ticket.set_gid_object(object_gid) +# new_ticket.set_issuer(key=api.key, subject=self.hrn) +# new_ticket.set_pubkey(object_gid.get_pubkey()) +# new_ticket.set_attributes(data) +# new_ticket.set_rspec(rspec) +# #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn)) +# new_ticket.encode() +# new_ticket.sign() +# +# return new_ticket.save_to_string(save_parents=True)