X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=sfa%2Fsenslab%2Fapi.py;h=1df06ff8fafa2d765d59aedf233bb37d4eba0cf3;hb=68649f7cebdff2ea36a08cd904e57de34b7b1682;hp=8d206633c499057463de2c79f04332f79e9d6f33;hpb=dcd61b9f643cc6cea94f3aa0d645dc109e8b7673;p=sfa.git diff --git a/sfa/senslab/api.py b/sfa/senslab/api.py deleted file mode 120000 index 8d206633..00000000 --- a/sfa/senslab/api.py +++ /dev/null @@ -1 +0,0 @@ -/home/avakian/Documents/sfa/sfa/senslab/api.py \ No newline at end of file diff --git a/sfa/senslab/api.py b/sfa/senslab/api.py new file mode 100644 index 00000000..1df06ff8 --- /dev/null +++ b/sfa/senslab/api.py @@ -0,0 +1,708 @@ +# +# SFA XML-RPC and SOAP interfaces +# + +import sys +import os +import traceback +import string +import datetime +import xmlrpclib + +from sfa.util.faults import * +from sfa.util.api import * +from sfa.util.config import * +from sfa.util.sfalogging import sfa_logger +import sfa.util.xmlrpcprotocol as xmlrpcprotocol +from sfa.trust.auth import Auth +from sfa.trust.rights import Right, Rights, determine_rights +from sfa.trust.credential import Credential,Keypair +from sfa.trust.certificate import Certificate +from sfa.util.xrn import get_authority, hrn_to_urn +from sfa.util.plxrn import hostname_to_hrn, hrn_to_pl_slicename, hrn_to_pl_slicename, slicename_to_hrn +from sfa.util.nodemanager import NodeManager + +from sfa.senslab.OARrestapi import * +from sfa.senslab.SenslabImportUsers import * + +try: + from collections import defaultdict +except: + class defaultdict(dict): + def __init__(self, default_factory=None, *a, **kw): + if (default_factory is not None and + not hasattr(default_factory, '__call__')): + raise TypeError('first argument must be callable') + dict.__init__(self, *a, **kw) + self.default_factory = default_factory + def __getitem__(self, key): + try: + return dict.__getitem__(self, key) + except KeyError: + return self.__missing__(key) + def __missing__(self, key): + if self.default_factory is None: + raise KeyError(key) + self[key] = value = self.default_factory() + return value + def __reduce__(self): + if self.default_factory is None: + args = tuple() + else: + args = self.default_factory, + return type(self), args, None, None, self.items() + def copy(self): + return self.__copy__() + def __copy__(self): + return type(self)(self.default_factory, self) + def __deepcopy__(self, memo): + import copy + return type(self)(self.default_factory, + copy.deepcopy(self.items())) + def __repr__(self): + return 'defaultdict(%s, %s)' % (self.default_factory, + dict.__repr__(self)) +## end of http://code.activestate.com/recipes/523034/ }}} + +def list_to_dict(recs, key): + """ + convert a list of dictionaries into a dictionary keyed on the + specified dictionary key + """ + # print>>sys.stderr, " \r\n \t\t 1list_to_dict : rec %s \r\n \t\t list_to_dict key %s" %(recs,key) + keys = [rec[key] for rec in recs] + print>>sys.stderr, " \r\n \t\t list_to_dict : rec %s \r\n \t\t list_to_dict keys %s" %(recs,keys) + return dict(zip(keys, recs)) + +class SfaAPI(BaseAPI): + + # flat list of method names + import sfa.methods + methods = sfa.methods.all + + def __init__(self, config = "/etc/sfa/sfa_config.py", encoding = "utf-8", + methods='sfa.methods', peer_cert = None, interface = None, + key_file = None, cert_file = None, cache = None): + BaseAPI.__init__(self, config=config, encoding=encoding, methods=methods, \ + peer_cert=peer_cert, interface=interface, key_file=key_file, \ + cert_file=cert_file, cache=cache) + + self.encoding = encoding + from sfa.util.table import SfaTable + self.SfaTable = SfaTable + # Better just be documenting the API + if config is None: + return + print >>sys.stderr, "\r\n_____________ SFA SENSLAB API \r\n" + # Load configuration + self.config = Config(config) + self.auth = Auth(peer_cert) + self.interface = interface + self.key_file = key_file + self.key = Keypair(filename=self.key_file) + self.cert_file = cert_file + self.cert = Certificate(filename=self.cert_file) + self.credential = None + # Initialize the PLC shell only if SFA wraps a myPLC + rspec_type = self.config.get_aggregate_type() + self.oar = OARapi() + self.users = SenslabImportUsers() + self.hrn = self.config.SFA_INTERFACE_HRN + self.time_format = "%Y-%m-%d %H:%M:%S" + self.logger=sfa_logger() + print >>sys.stderr, "\r\n \t\t___________PLC/API.PY __init__ STOP ",self.interface #dir(self) + + + #def getPLCShell(self): + #self.plauth = {'Username': self.config.SFA_PLC_USER, + #'AuthMethod': 'password', + #'AuthString': self.config.SFA_PLC_PASSWORD} + #try: + #print >>sys.stderr, "\r\n \t\t___________PLC/API.PY getPLCShell " + #sys.path.append(os.path.dirname(os.path.realpath("/usr/bin/plcsh"))) + #self.plshell_type = 'direct' + #import PLC.Shell + #shell = PLC.Shell.Shell(globals = globals()) + #print >>sys.stderr, "\r\n \t\t____tryshell %s \r\n type %s \r\n %s"%(shell, type(shell), dir(shell)) + + #except: + #self.plshell_type = 'xmlrpc' + #print >>sys.stderr, "\r\n \t\t___________PLC/API.PY getPLCShell xmlrpc" + #url = self.config.SFA_PLC_URL + #shell = xmlrpclib.Server(url, verbose = 0, allow_none = True) + + #return shell + + def getCredential(self): + """ + Return a valid credential for this interface. + """ + type = 'authority' + path = self.config.SFA_DATA_DIR + filename = ".".join([self.interface, self.hrn, type, "cred"]) + cred_filename = path + os.sep + filename + cred = None + if os.path.isfile(cred_filename): + cred = Credential(filename = cred_filename) + # make sure cred isnt expired + if not cred.get_expiration or \ + datetime.datetime.today() < cred.get_expiration(): + return cred.save_to_string(save_parents=True) + + # get a new credential + if self.interface in ['registry']: + cred = self.__getCredentialRaw() + else: + cred = self.__getCredential() + cred.save_to_file(cred_filename, save_parents=True) + + return cred.save_to_string(save_parents=True) + + + def getDelegatedCredential(self, creds): + """ + Attempt to find a credential delegated to us in + the specified list of creds. + """ + if creds and not isinstance(creds, list): + creds = [creds] + delegated_creds = filter_creds_by_caller(creds,self.hrn) + if not delegated_creds: + return None + return delegated_creds[0] + + def __getCredential(self): + """ + Get our credential from a remote registry + """ + from sfa.server.registry import Registries + registries = Registries(self) + registry = registries[self.hrn] + cert_string=self.cert.save_to_string(save_parents=True) + # get self credential + self_cred = registry.GetSelfCredential(cert_string, self.hrn, 'authority') + # get credential + cred = registry.GetCredential(self_cred, self.hrn, 'authority') + return Credential(string=cred) + + def __getCredentialRaw(self): + """ + Get our current credential directly from the local registry. + """ + + hrn = self.hrn + auth_hrn = self.auth.get_authority(hrn) + + # is this a root or sub authority + if not auth_hrn or hrn == self.config.SFA_INTERFACE_HRN: + auth_hrn = hrn + auth_info = self.auth.get_auth_info(auth_hrn) + table = self.SfaTable() + records = table.findObjects(hrn) + if not records: + raise RecordNotFound + record = records[0] + type = record['type'] + object_gid = record.get_gid_object() + new_cred = Credential(subject = object_gid.get_subject()) + new_cred.set_gid_caller(object_gid) + new_cred.set_gid_object(object_gid) + new_cred.set_issuer_keys(auth_info.get_privkey_filename(), auth_info.get_gid_filename()) + + r1 = determine_rights(type, hrn) + new_cred.set_privileges(r1) + new_cred.encode() + new_cred.sign() + + return new_cred + + + def loadCredential (self): + """ + Attempt to load credential from file if it exists. If it doesnt get + credential from registry. + """ + + # see if this file exists + # XX This is really the aggregate's credential. Using this is easier than getting + # the registry's credential from iteslf (ssl errors). + ma_cred_filename = self.config.SFA_DATA_DIR + os.sep + self.interface + self.hrn + ".ma.cred" + try: + self.credential = Credential(filename = ma_cred_filename) + except IOError: + self.credential = self.getCredentialFromRegistry() + + ## + # Convert SFA fields to PLC fields for use when registering up 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]) + + 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"]) + + elif type == "node": + if not "hostname" in pl_record: + if not "hostname" in record: + raise MissingSfaInfo("hostname") + pl_record["hostname"] = record["hostname"] + if not "model" in pl_record: + pl_record["model"] = "geni" + + elif type == "authority": + pl_record["login_base"] = hrn_to_pl_login_base(hrn) + + if not "name" in pl_record: + pl_record["name"] = hrn + + if not "abbreviated_name" in pl_record: + pl_record["abbreviated_name"] = hrn + + if not "enabled" in pl_record: + pl_record["enabled"] = True + + if not "is_public" in pl_record: + pl_record["is_public"] = True + + return pl_record + + 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 + print>>sys.stderr, "\r\n \t\t \t fill_record_pl_info : entering... \r\n" + node_ids, site_ids, slice_ids = [], [], [] + person_ids, key_ids = [], [] + type_map = {'node': node_ids, 'authority': site_ids, + 'slice': slice_ids, 'user': person_ids} + + for record in records: + for type in type_map: + print>>sys.stderr, "\r\n \t\t \t fill_record_pl_info : type %s. record['pointer'] %s "%(type,record['pointer']) + if type == record['type']: + type_map[type].append(record['pointer']) + print>>sys.stderr, "\r\n \t\t \t fill_record_pl_info : records %s... \r\n \t\t \t fill_record_pl_info : type_map %s"%(records,type_map) + # get pl records + nodes, sites, slices, persons, keys = {}, {}, {}, {}, {} + if node_ids: + node_list = self.oar.GetNodes( node_ids) + print>>sys.stderr, " \r\n \t\t\t BEFORE LIST_TO_DICT_NODES node_ids : %s" %(node_ids) + nodes = list_to_dict(node_list, 'node_id') + if site_ids: + site_list = self.oar.GetSites( site_ids) + sites = list_to_dict(site_list, 'site_id') + if slice_ids: + slice_list = self.oar.GetSlices( slice_ids) + slices = list_to_dict(slice_list, 'slice_id') + if person_ids: + print>>sys.stderr, " \r\n \t\t \t fill_record_pl_info BEFORE GetPersons person_ids: %s" %(person_ids) + person_list = self.users.GetPersons( person_ids) + persons = list_to_dict(person_list, 'person_id') + print>>sys.stderr, "\r\n fill_record_pl_info persons %s \r\n \t\t person_ids %s " %(persons, person_ids) + for person in persons: + key_ids.extend(persons[person]['key_ids']) + print>>sys.stderr, "\r\n key_ids %s " %(key_ids) + + pl_records = {'node': nodes, 'authority': sites, + 'slice': slices, 'user': persons} + + if key_ids: + key_list = self.users.GetKeys( key_ids) + keys = list_to_dict(key_list, 'key_id') + # print>>sys.stderr, "\r\n fill_record_pl_info persons %s \r\n \t\t keys %s " %(keys) + # fill record info + for record in records: + # records with pointer==-1 do not have plc info. + # for example, the top level authority records which are + # authorities, but not PL "sites" + if record['pointer'] == -1: + continue + + for type in pl_records: + if record['type'] == type: + if record['pointer'] in pl_records[type]: + record.update(pl_records[type][record['pointer']]) + break + # fill in key info + if record['type'] == 'user': + if 'key_ids' not in record: + print>>sys.stderr, " NO_KEY_IDS fill_record_pl_info key_ids record: %s" %(record) + else: + 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): + """ + convert pl ids to hrns + """ + + # get ids + slice_ids, person_ids, site_ids, node_ids = [], [], [], [] + for record in records: + if 'site_id' in record: + site_ids.append(record['site_id']) + if 'site_ids' in records: + site_ids.extend(record['site_ids']) + if 'person_ids' in record: + person_ids.extend(record['person_ids']) + if 'slice_ids' in record: + slice_ids.extend(record['slice_ids']) + if 'node_ids' in record: + node_ids.extend(record['node_ids']) + + # get pl records + slices, persons, sites, nodes = {}, {}, {}, {} + if site_ids: + site_list = self.oar.GetSites( site_ids, ['site_id', 'login_base']) + sites = list_to_dict(site_list, 'site_id') + print>>sys.stderr, " \r\n \r\n \t\t ____ site_list %s \r\n \t\t____ sites %s " % (site_list,sites) + if person_ids: + person_list = self.users.GetPersons( person_ids, ['person_id', 'email']) + persons = list_to_dict(person_list, 'person_id') + if slice_ids: + slice_list = self.oar.GetSlices( slice_ids, ['slice_id', 'name']) + slices = list_to_dict(slice_list, 'slice_id') + if node_ids: + node_list = self.oar.GetNodes( node_ids, ['node_id', 'hostname']) + nodes = list_to_dict(node_list, 'node_id') + + # convert ids to hrns + for record in records: + + # get all relevant data + type = record['type'] + pointer = record['pointer'] + auth_hrn = self.hrn + login_base = '' + if pointer == -1: + continue + + print>>sys.stderr, " \r\n \r\n \t\t fill_record_hrns : sites %s \r\n \t\t record %s " %(sites, record) + if 'site_id' in record: + site = sites[record['site_id']] + print>>sys.stderr, " \r\n \r\n \t\t \t fill_record_hrns : sites %s \r\n \t\t\t site sites[record['site_id']] %s " %(sites,site) + login_base = site['login_base'] + record['site'] = ".".join([auth_hrn, login_base]) + if 'person_ids' in record: + emails = [persons[person_id]['email'] for person_id in record['person_ids'] \ + if person_id in persons] + usernames = [email.split('@')[0] for email in emails] + person_hrns = [".".join([auth_hrn, login_base, username]) for username in usernames] + record['persons'] = person_hrns + if 'slice_ids' in record: + slicenames = [slices[slice_id]['name'] for slice_id in record['slice_ids'] \ + if slice_id in slices] + slice_hrns = [slicename_to_hrn(auth_hrn, slicename) for slicename in slicenames] + record['slices'] = slice_hrns + if 'node_ids' in record: + hostnames = [nodes[node_id]['hostname'] for node_id in record['node_ids'] \ + if node_id in nodes] + node_hrns = [hostname_to_hrn(auth_hrn, login_base, hostname) for hostname in hostnames] + record['nodes'] = node_hrns + if 'site_ids' in record: + login_bases = [sites[site_id]['login_base'] for site_id in record['site_ids'] \ + if site_id in sites] + site_hrns = [".".join([auth_hrn, lbase]) for lbase in login_bases] + record['sites'] = site_hrns + + return records + + def fill_record_sfa_info(self, records): + + def startswith(prefix, values): + return [value for value in values if value.startswith(prefix)] + + SenslabUsers = SenslabImportUsers() + # get person ids + person_ids = [] + site_ids = [] + for record in records: + person_ids.extend(record.get("person_ids", [])) + site_ids.extend(record.get("site_ids", [])) + if 'site_id' in record: + site_ids.append(record['site_id']) + + print>>sys.stderr, "\r\n \r\n _fill_record_sfa_info ___person_ids %s \r\n \t\t site_ids %s " %(person_ids, site_ids) + + # get all pis from the sites we've encountered + # and store them in a dictionary keyed on site_id + site_pis = {} + if site_ids: + pi_filter = {'|roles': ['pi'], '|site_ids': site_ids} + pi_list = SenslabUsers.GetPersons( pi_filter, ['person_id', 'site_ids']) + print>>sys.stderr, "\r\n \r\n _fill_record_sfa_info ___ GetPersons ['person_id', 'site_ids'] pi_ilist %s" %(pi_list) + + for pi in pi_list: + # we will need the pi's hrns also + person_ids.append(pi['person_id']) + + # we also need to keep track of the sites these pis + # belong to + for site_id in pi['site_ids']: + if site_id in site_pis: + site_pis[site_id].append(pi) + else: + site_pis[site_id] = [pi] + + # get sfa records for all records associated with these records. + # we'll replace pl ids (person_ids) with hrns from the sfa records + # we obtain + + # get the sfa records + table = self.SfaTable() + person_list, persons = [], {} + person_list = table.find({'type': 'user', 'pointer': person_ids}) + # create a hrns keyed on the sfa record's pointer. + # 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) + + # get the pl records + pl_person_list, pl_persons = [], {} + pl_person_list = SenslabUsers.GetPersons(person_ids, ['person_id', 'roles']) + pl_persons = list_to_dict(pl_person_list, 'person_id') + print>>sys.stderr, "\r\n \r\n _fill_record_sfa_info ___ _list %s \r\n \t\tplshell.GetPersons ['person_id', 'roles'] pl_persons %s " %(pl_person_list, pl_persons) + # fill sfa info + for record in records: + # skip records with no pl info (top level authorities) + if record['pointer'] == -1: + continue + sfa_info = {} + type = record['type'] + if (type == "slice"): + # all slice users are researchers + record['PI'] = [] + record['researcher'] = [] + for person_id in record['person_ids']: + hrns = [person['hrn'] for person in persons[person_id]] + record['researcher'].extend(hrns) + + # pis at the slice's site + 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]] + record['PI'].extend(hrns) + record['geni_urn'] = hrn_to_urn(record['hrn'], 'slice') + record['geni_creator'] = record['PI'] + + elif (type == "authority"): + record['PI'] = [] + record['operator'] = [] + record['owner'] = [] + for pointer in record['person_ids']: + 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]] + roles = pl_persons[pointer]['roles'] + if 'pi' in roles: + record['PI'].extend(hrns) + if 'tech' in roles: + record['operator'].extend(hrns) + if 'admin' in roles: + record['owner'].extend(hrns) + # xxx TODO: OrganizationName + elif (type == "node"): + sfa_info['dns'] = record.get("hostname", "") + # xxx TODO: URI, LatLong, IP, DNS + + elif (type == "user"): + 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): + """ + Given a SFA record, fill in the PLC specific and SFA specific + fields in the record. + """ + print >>sys.stderr, "\r\n \t\t fill_record_info %s"%(records) + if not isinstance(records, list): + records = [records] + print >>sys.stderr, "\r\n \t\t BEFORE fill_record_pl_info %s" %(records) + self.fill_record_pl_info(records) + print >>sys.stderr, "\r\n \t\t after fill_record_pl_info %s" %(records) + self.fill_record_sfa_info(records) + print >>sys.stderr, "\r\n \t\t after fill_record_sfa_info" + + def update_membership_list(self, oldRecord, record, listName, addFunc, delFunc): + # get a list of the HRNs tht are members of the old and new records + if oldRecord: + oldList = oldRecord.get(listName, []) + 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 = [] + table = self.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(self.plauth, 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(self.plauth, personId, containerId) + + def update_membership(self, oldRecord, record): + if record.type == "slice": + self.update_membership_list(oldRecord, record, 'researcher', + self.plshell.AddPersonToSlice, + self.plshell.DeletePersonFromSlice) + elif record.type == "authority": + # xxx TODO + pass + + + +class ComponentAPI(BaseAPI): + + def __init__(self, config = "/etc/sfa/sfa_config.py", encoding = "utf-8", methods='sfa.methods', + peer_cert = None, interface = None, key_file = None, cert_file = None): + + BaseAPI.__init__(self, config=config, encoding=encoding, methods=methods, peer_cert=peer_cert, + interface=interface, key_file=key_file, cert_file=cert_file) + self.encoding = encoding + + # Better just be documenting the API + if config is None: + return + + self.nodemanager = NodeManager(self.config) + + def sliver_exists(self): + sliver_dict = self.nodemanager.GetXIDs() + if slicename in sliver_dict.keys(): + return True + else: + return False + + def get_registry(self): + addr, port = self.config.SFA_REGISTRY_HOST, self.config.SFA_REGISTRY_PORT + url = "http://%(addr)s:%(port)s" % locals() + server = xmlrpcprotocol.get_server(url, self.key_file, self.cert_file) + return server + + def get_node_key(self): + # this call requires no authentication, + # so we can generate a random keypair here + subject="component" + (kfd, keyfile) = tempfile.mkstemp() + (cfd, certfile) = tempfile.mkstemp() + key = Keypair(create=True) + key.save_to_file(keyfile) + cert = Certificate(subject=subject) + cert.set_issuer(key=key, subject=subject) + cert.set_pubkey(key) + cert.sign() + cert.save_to_file(certfile) + registry = self.get_registry() + # the registry will scp the key onto the node + registry.get_key() + + def getCredential(self): + """ + Get our credential from a remote registry + """ + path = self.config.SFA_DATA_DIR + config_dir = self.config.config_path + cred_filename = path + os.sep + 'node.cred' + try: + credential = Credential(filename = cred_filename) + return credential.save_to_string(save_parents=True) + except IOError: + node_pkey_file = config_dir + os.sep + "node.key" + node_gid_file = config_dir + os.sep + "node.gid" + cert_filename = path + os.sep + 'server.cert' + if not os.path.exists(node_pkey_file) or \ + not os.path.exists(node_gid_file): + self.get_node_key() + + # get node's hrn + gid = GID(filename=node_gid_file) + hrn = gid.get_hrn() + # get credential from registry + cert_str = Certificate(filename=cert_filename).save_to_string(save_parents=True) + registry = self.get_registry() + cred = registry.GetSelfCredential(cert_str, hrn, 'node') + Credential(string=cred).save_to_file(credfile, save_parents=True) + + return cred + + def clean_key_cred(self): + """ + remove the existing keypair and cred and generate new ones + """ + files = ["server.key", "server.cert", "node.cred"] + for f in files: + filepath = KEYDIR + os.sep + f + if os.path.isfile(filepath): + os.unlink(f) + + # install the new key pair + # GetCredential will take care of generating the new keypair + # and credential + self.get_node_key() + self.getCredential() + +