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How to use lock_server method in tempest

Best Python code snippet using tempest_python

paxos_proposers.py

Source:paxos_proposers.py

1#/usr/bin/env python32import random3import time4import signal5import sys6import json7import socket8import threading9import numpy as np10from typing import List, Any, Dict, Set11from socketserver import TCPServer, BaseRequestHandler, ThreadingMixIn12OKGREEN = '\033[92m'13YELLOW = '\033[93m'14ENDC = '\033[0m'15PORT_ACCEPTOR = 10200            # group port range start, port = PORT + server_id16PORT_PROPOSER = 1021017PORT_REDIRECT = 1022018PORT_FETCH = 1023019PORT_HEARTBEAT = 10240  # group heartbeat port range start20WAITING_TIMEOUT = 3    # time to wait before resending potentially lost msgs21# enums for state machine command sequence22S_UNSURE = 'undefined'23S_NO_OP = 'no-op'24S_ELECT_LEADER_PREFIX = 'S_ELECT_LEADER_'25def S_ELECT_LEADER(leader_id):26    return S_ELECT_LEADER_PREFIX + str(leader_id)27# enums for paxos message types28T_PREP = 'prepare'29T_PREP_R = 'prepare-reply'30T_ACC = 'accept'31T_ACC_R = 'accept-reply'32T_LEARN = 'learn'33# phases34P_PREP = 035P_ACC = 136P_LEARN = 237# waiting status, used in resend logic to handle network outage38W_OK = 039W_WAITING_PREPARE_REPLIES = 140W_WAITING_ACCEPT_REPLIES = 241# TODO: waiting on learn?42def INIT_PROGRESS():43    return {44        'phase': P_PREP,45        'base_n': 0, # proposal number base46        'highest_proposed_v': '',47        'highest_proposed_n': -1, # highest proposal number I've promised48        'prepare': {}, # stores prepare responses49        'accepted_reply': {} # stores accept responses50    }51class HeartBeatRecvHandler(BaseRequestHandler):52    def handle(self):53        data = self.request.recv(1024).strip().decode('utf-8')54        try:55            self.server.recv_heartbeat(data)56        except ValueError:57            self.server.lock_server.log('[HeartbeatRecv] Could not parse the data as JSON: {}'.format(data))58        finally:59            # close the connection because everything is async60            self.request.close()61class HeartBeatRecvServer(TCPServer):62    allow_reuse_address = True63    last_heartbeat = None64    def __init__ (self, sid: int, lock_server):65        addr = ('localhost', PORT_HEARTBEAT + sid)66        self.heartrecvaddr = addr67        self.sid = sid68        self.lock_server = lock_server69        self.leaderHeartBeat = (-1, None)70        TCPServer.__init__(self, addr, HeartBeatRecvHandler)71    72    def recv_heartbeat(self, data):73        infos = data.split('_')74        leader_id = int(infos[1])75        self.lock_server.pastSlotId = int(infos[2])76        # if len(infos) > 2:77        #     for singleInfo in infos[3:]:78        #         if singleInfo[0] == 'a':79        #             self.lock_server.failed_acceptors.add(int(singleInfo[1:]))80        #         if singleInfo[0] == 'p':81        #             self.lock_server.failed_proposers.add(int(singleInfo[1:]))82        # self.lock_server.log("Receive heart beat from Leader %s" % leader_id)83        if self.lock_server.leader == -1 and leader_id >= 0:84            self.lock_server.log(OKGREEN + "Change leader to {}".format(leader_id) + ENDC)85            self.lock_server.leader = leader_id86            self.leaderHeartBeat = (self.lock_server.leader, time.time())87            if self.lock_server.recover is True:88                self.request_decide()            89        elif self.lock_server.leader == leader_id:90            self.leaderHeartBeat = (self.lock_server.leader, time.time())91        elif self.lock_server.leader != leader_id:92            self.lock_server.log(OKGREEN + "Change leader to {}".format(leader_id) + ENDC)93            self.lock_server.leader = leader_id94            self.leaderHeartBeat = (self.lock_server.leader, time.time())95            if self.lock_server.recover is True:96                self.request_decide()97        # self.lock_server.log('Proposer #{} update heartbeat "{}" from Leader #{}'.format(98        #               self.lock_server.server_id, self.leaderHeartBeat, leader_id))99    100    def request_decide(self):101        send_msg = "requestDecide_%d" % (self.lock_server.server_id)102        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)103        addr = ('localhost', PORT_PROPOSER + self.lock_server.leader)104        sock.settimeout(0.5)105        sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)106        sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)107        try:108            sock.connect(addr)109            sock.sendall(send_msg.encode('utf-8'))110        except ConnectionRefusedError:111            self.lock_server.log("Recover {} recover fail, please kill the process".format(self.lock_server.server_id))112            pass113        except socket.timeout as e:114            pass115        finally:116            sock.close()117class HeartBeatRecvThread(threading.Thread):118    def __init__(self, sid: int, lock_server):119        threading.Thread.__init__(self)120        self.server = HeartBeatRecvServer(sid, lock_server)121        122    def run(self):123        self.server.lock_server.log("Proposor %d start to run heartbeat receiver at PORT %s" % (self.server.sid, self.server.heartrecvaddr))124        self.server.serve_forever()125class HeartBeatCheckerThread(threading.Thread):126    def __init__(self, heartbeat_server, lock_server):127        threading.Thread.__init__(self)128        self.heartbeat_server = heartbeat_server129        self.lock_server = lock_server130        self.stopped = False131    def run(self):132        while not self.stopped:133            if self.lock_server.is_leader() is False:134                # self.lock_server.log('heartbeat information {}'.format(self.heartbeat_server.leaderHeartBeat))135                if self.heartbeat_server.leaderHeartBeat[0] >= 0 and self.heartbeat_server.leaderHeartBeat[1] is not None:136                    wait_time = (self.lock_server.server_id) * 1 + 1137                    if float(self.heartbeat_server.leaderHeartBeat[1]) + wait_time < time.time():138                        self.lock_server.log('heartbeat check failed, trigger election')139                        print("TimeOut = ", time.time() - self.heartbeat_server.leaderHeartBeat[1] + wait_time)140                        self.lock_server.failed_proposers.add(self.lock_server.leader)141                        self.lock_server.leader = -1142                        self.lock_server.electLeader(increaseProposalNum=True)143                        while self.lock_server.leader == -1:144                            time.sleep(self.lock_server.abortWaitTime)145                            self.lock_server.electLeader(increaseProposalNum=True)146                        # break147                    else:148                        self.abortWaitTime = 1 + self.lock_server.server_id * 0.2149            else:150                self.abortWaitTime = 1 + self.lock_server.server_id * 0.2151            time.sleep(1.0)152class HeartBeatSenderThread(threading.Thread):153    def __init__(self, lock_server):154        threading.Thread.__init__(self)155        self.lock_server = lock_server156        self.stopped = False157    def run(self):158        time.sleep(0.5)159        self.lock_server.log("Proposor %d start to serves heartbeat service" % (self.lock_server.server_id))160        while not self.stopped:161            self.lock_server.send_heartbeat()162            if self.lock_server.recover is True and self.lock_server.leader >= 0:163                data = self.send_requestRecover()164                if data.split('_')[-1].lower() == "end":165                    self.lock_server.log("Recover {}, recover success!".format(self.lock_server.server_id))166                    self.lock_server.recover = False167                else:168                    Cliend_Id, CmdId, SlotId, Cmd = [x for x in data.split('_')[1:]]169                    Cliend_Id = int(Cliend_Id)170                    CmdId = int(CmdId)171                    SlotId = int(SlotId)172                    self.lock_server.pastCommands[(Cliend_Id, CmdId)] = (SlotId, Cmd)173            time.sleep(0.5)174    def send_requestRecover(self):175        send_msg = 'requestRecover_{}'.format(self.lock_server.server_id)176        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)177        addr = ('localhost', PORT_PROPOSER + self.lock_server.leader)178        self.lock_server.log('Recover {} sending "{}" to Leader {}'.format(179          self.lock_server.server_id, send_msg, self.lock_server.leader))180        try:181            sock.connect(addr)182            sock.sendall(send_msg.encode('utf-8'))183            try:184                rtMessage = sock.recv(1024).decode('utf-8')185            except ConnectionResetError as e:186                self.lock_server.log("Recover {} recover fail, please kill the process".format(self.lock_server.server_id))187                raise e188            except socket.timeout as e:189                print("Recover node connect to leader Node {} is Time Out!, please kill the process".format(self.lock_server.server_id))190                raise e191        except ConnectionRefusedError as e:192            self.lock_server.log("Recover {} recover fail, please kill the process".format(self.lock_server.server_id))193            raise e194        finally:195            sock.close()196            return rtMessage197class FetchRecvHandler(BaseRequestHandler):198    def handle(self):199        data = self.request.recv(1024).strip().decode('utf-8')200        infos = data.split('_')201        clientId = int(infos[1])202        lockId = int(infos[2])203        rtMessage = self.server.fetchData(clientId, lockId)204        try:205            self.server.lock_server.log('Sendding result "{}" to client {}'.format(rtMessage, clientId))206            self.request.sendall(rtMessage.encode('utf-8'))207        except ValueError:208            self.server.lock_server.log('[FetchRecv] Could not understand the fetch')209        finally:210            # close the connection because everything is async211            self.request.close()212class FetchRecvServer(TCPServer):213    allow_reuse_address = True214    last_heartbeat = None215    def __init__ (self, sid: int, lock_server):216        addr = ('localhost', PORT_FETCH + sid)217        self.sid = sid218        self.lock_server = lock_server219        TCPServer.__init__(self, addr, FetchRecvHandler)220    221    def fetchData(self, clientId, lockId):222        self.lock_server.log('Client {} fetching data "{},lock No.{}" from Proposor {}'.format(clientId, clientId, lockId, self.lock_server.server_id))223        pastCmdList = []224        printStr = '{'225        for k, v in self.lock_server.pastCommands.items():226            printStr += '(Client ID: %d,  Lamport TimeStamp: %d, Request: %s)' % (k[0], k[1], v[1])227        printStr += '}' 228        self.lock_server.log('Client %d check status of lock %d' % (clientId, lockId))229        self.lock_server.log(OKGREEN + 'Current Processed Sequence Request: {}'.format(printStr) + ENDC)230        for k, v in self.lock_server.pastCommands.items():231            pastCmdList.append((k[0], k[1], v[0], v[1])) # (Cliend Id, CmdId, SlotId, Cmd)232        pastCmdList.sort(key = lambda x: (x[2], x[0], x[1])) # (SlotId, Cliend Id, CmdId)233        self.lock_server.log('Print Past Command = {}'.format(pastCmdList))234        self.lock_server.locks = [None for _ in  self.lock_server.locks]235        for cmd in pastCmdList:236            self.execute(cmd[0], cmd[1], cmd[3])237        if self.lock_server.locks[lockId] == None:238            rtMessage = "Lock %d is free." % lockId239        else:240            rtMessage = "Lock %d is owned by %d." % (lockId, self.lock_server.locks[lockId])241        # elif self.lock_server.locks[lockId] != clientId:242        #     rtMessage = "Lock %d is owned by %d." % (lockId, self.lock_server.locks[lockId])243        # elif self.lock_server.locks[lockId] == clientId:244        #     rtMessage = "Lock %d belongs to you." % lockId245        self.lock_server.locks = [None for _ in  self.lock_server.locks]246        # self.lock_server.log('Data "{},lock No.{}" Result: "{}"'.format(clientId, lockId, rtMessage))247        248        return rtMessage249        250    def execute(self, clientId: int, cmdId: int, command: str):251        if "l" == command[0]:252            lockNode = int(command.split('-')[-1])253            if self.lock_server.locks[lockNode] == None:254                print("Lock %d is locked by %d" % (lockNode, clientId))255                self.lock_server.locks[lockNode] = clientId256            elif self.lock_server.locks[lockNode] == clientId:257                print("Lock %d is already locked by %d" % (lockNode, clientId))258                pass259            elif self.lock_server.locks[lockNode] != clientId:260                print("Lock %d cannot be locked by %d" % (lockNode, clientId))261                pass262        elif "u" == command[0]:263            unlockNode = int(command.split('-')[-1])264            if self.lock_server.locks[unlockNode] == None:265                print("Lock %d is already freed" % unlockNode)266                pass267            elif self.lock_server.locks[unlockNode] == clientId:268                self.lock_server.locks[unlockNode] = None269                print("Lock %d is unlocked by %d" % (unlockNode, clientId))270            elif self.lock_server.locks[unlockNode] != clientId:271                print("Lock %d cannot be unlocked by %d" % (unlockNode, clientId))272                pass273class FetchRecvThread(threading.Thread):274    def __init__(self, sid: int, lock_server):275        threading.Thread.__init__(self)276        self.server = FetchRecvServer(sid, lock_server)277        278    def run(self):279        self.server.lock_server.log("Proposor %d start to serves fetch service" % (self.server.sid))280        self.server.serve_forever()281class RedirectSenderThread(threading.Thread):282    def __init__(self, lock_server):283        threading.Thread.__init__(self)284        self.lock_server = lock_server285        self.stopped = False286        287    def run(self):288        time.sleep(1.0)289        self.lock_server.log("Proposor %d start to serves redirect service" % (self.lock_server.server_id))290        while not self.stopped:291            self.lock_server.redirect()292            time.sleep(1.0)293class LockHandler(BaseRequestHandler):294    '''295    Override the handle method to handle each request296    '''297    def handle(self):298        self.server.log("acquiring...")299        # with self.server.handler_lock:300        data = self.request.recv(1024).strip().decode('utf-8')301        self.server.log('Received message {}'.format(data), verbose=True)302        try:303            # data = json.loads(data)304            infos = data.split('_')305            self.server.log('Infos = {}'.format(infos), verbose=True)306            if infos[0] == 'client':307                self.server.processClient(infos)308                reply_msg = \309                    'Request (Client ID: %d,  Lamport TimeStamp: %d, Request: %s) has been processed' % \310                        (int(infos[1]), int(infos[2]), infos[3])311                self.request.sendall(reply_msg.encode('utf-8'))312            elif infos[0] == 'promise':313                self.server.processPromise(infos)314            elif infos[0] == 'accepted':315                self.server.processAccepted(infos)316            elif infos[0] == 'decide':317                reply_msg = self.server.processDecide(infos)318                self.request.sendall(reply_msg.encode('utf-8'))319            elif infos[0] == 'leader':320                reply_msg = self.server.processLeader(infos)321                self.request.sendall(reply_msg.encode('utf-8'))322            elif infos[0] == 'requestDecide':323                self.server.generateRecoverCommands(int(infos[1]))324                self.server.sendDecideProposers.add(int(infos[1]))325            elif infos[0] == 'requestRecover':326                reply_msg = self.server.processRecoverCommands(int(infos[1]))327                self.request.settimeout(1)328                try:329                    self.request.sendall(reply_msg.encode('utf-8'))330                except ConnectionRefusedError:331                    print("Connection to recover Node {} is Refused!".format(int(infos[1])))332                except socket.timeout as e:333                    print("Connection to recover Node {} is Time Out!".format(int(infos[1])))334                finally:335                    pass336                self.request.settimeout(None)337                if reply_msg.split('_')[-1].lower() == 'end':338                    self.server.sendDecideProposers.discard(int(infos[1]))339            elif infos[0] == 'recover':340                self.server.failed_proposers.discard(int(infos[1]))341                self.server.failed_acceptors.discard(int(infos[1]))342            # else:343            #     self.server.receive_msg(self.request, data)344        except ValueError:345            self.server.log('Could not parse the data as String: {}'.format(data))346        finally:347            # close the connection because everything is async348            self.request.close()349        self.server.log("LockHandler.handle done")350class LockServer(TCPServer):351    # whether the server will allow the reuse of an address352    allow_reuse_address = True353    leader = -1 # initial leader354    is_electing = False # if this node is during the election period355    # state machine356    next_exe = 0 # the next executable command index357    sendDecideProposers = set()358    # an array of command sequence359    # the i-th element corresponds to the result of the i-th paxos instance360    # undecided commands are marked by S_UNSURE361    states = [] # type: List[str]362    pastCommands = {} # Key = (clientId, cmdId), Value = (SlotId, Command, Result)363    recoverCommands = {} # Key = RecoverId, Value = (Cliend Id, CmdId, SlotId, Cmd)364    futureCommands = {} # Key = (clientId, cmdId), Value = Command Message365    locks = [None for _ in range(11)] # locked by client n or None366    proposerNumber = None367    msg_count = 0368    slotId = 0369    pastSlotId = -1370    # stores per instance information371    # leader: prepare responses, accept responses, proposal number372    # follower: highest promised proposal number, highest accept373    progress = {} # type: Dict[int, Any]374    failed_proposers = set() # type: Set[int]375    failed_acceptors = set()376    377    handler_lock = threading.Lock()378    waiting = W_OK379    waiting_settime = 0380    wait_args = None381    # constructor382    def __init__ (self, sid: int, total: int, recover=False):383        self.server_id = sid384        self.total_nodes = total385        self.proposal_Number = total - sid386        self.abortWaitTime = 1 + self.server_id * 0.2387        self.recover = recover388        addr = ('localhost', PORT_PROPOSER + sid)389        TCPServer.__init__(self, addr, LockHandler)390        self.waitTime = 1 + sid * 0.2391        if recover is False:392            while(self.leader == -1 and self.server_id == 0):393                time.sleep(self.abortWaitTime)394                self.electLeader()395    def generateRecoverCommands(self, recoverId):396        if len(self.recoverCommands.get(recoverId, [])) == 0:397            self.log("Generate Recover Command for Recover Node %d" % recoverId)398            self.recoverCommands[recoverId] = []399            for xx in self.pastCommands.items(): # ((Cliend Id, CmdId), (SlotId, Cmd))400                print("Recover Command Generated = ", xx)401                self.recoverCommands[recoverId].append([str(xx[0][0]), str(xx[0][1]), str(xx[1][0]), str(xx[1][1])])402        403    # TODO: Add this back, send heartbeat to followers404    def send_heartbeat(self):405        if self.server_id == self.leader:406            msg = self.server_id407            send_msg = "heart_%d_%d" % (self.server_id, self.slotId)408            for i in range(self.total_nodes):409                if not i == self.server_id:410                    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)411                    addr = ('localhost', PORT_HEARTBEAT + i)412                    # self.log('Leader #{} sending "{}" to Proposor #{}'.format(413                    #   self.server_id, send_msg, i))414                    try:415                        sock.connect(addr)416                        sock.sendall(send_msg.encode('utf-8'))417                    except ConnectionRefusedError:418                        pass419                        # print("Connection to proposer {} is Refused!".format(i))420                        # if i not in self.failed_proposers:                        421                        #     self.failed_proposers.add(i)422                    finally:423                        sock.close()424    # TODO: Add this back, send heartbeat to followers425    def processRecoverCommands(self, recoverId):426        # sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)427        # sock.settimeout(0.5)428        # sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)429        # sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)430        # addr = ('localhost', PORT_PROPOSER + recoverId)431        if len(self.recoverCommands[recoverId]) > 0:432            send_msg = "recoverCommand_%s" % '_'.join(self.recoverCommands[recoverId].pop())433        else:434            send_msg = "recoverCommand_end"435        # try:436        #     sock.connect(addr)437        #     sock.sendall(send_msg.encode('utf-8'))438        # except ConnectionRefusedError:439        #     print("Connection to recover Node {} is Refused!".format(recoverId))440        #     send_msg = 'fail'441        # except socket.timeout as e:442        #     print("Connection to recover Node {} is Time Out!".format(recoverId))443        #     send_msg = 'fail'444        # finally:445        #     sock.close()446        return send_msg447    # TODO: Add this back, send message to leaders448    def redirect(self):449        removeCmds = []450        for k in self.futureCommands.keys():451            if self.pastCommands.get(k) is not None:452                removeCmds.append(k)453        for rmk in removeCmds:454            self.futureCommands.pop(rmk)455        for k in self.futureCommands.keys():456            if self.pastCommands.get(k) is None:457                sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)458                sock.settimeout(1.0)459                sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)460                sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)461                other_node = random.choice([xx for xx in range(self.total_nodes) if xx not in self.failed_proposers and xx != self.leader])462                if self.leader == self.server_id or self.leader == -1:463                    addr = ('localhost', PORT_PROPOSER + other_node)464                    self.log('Leader {} redirect "{}" to Proposer {}'.format(465                        self.server_id, self.futureCommands[k], other_node))                    466                else:467                    addr = ('localhost', PORT_PROPOSER + self.leader)468                    self.log('Proposer {} redirect "{}" to Leader {}'.format(469                        self.server_id, self.futureCommands[k], self.leader))470                try:471                    sock.connect(addr)472                    sock.sendall(self.futureCommands[k].encode('utf-8'))473                except ConnectionRefusedError:474                    pass475                    # print("Connection Refused!!!")476                except socket.timeout as e:477                    self.log("socket timeout {}\nRedirect from Proposer{}: to Leader: {}".format(e, self.server_id, self.leader))478                finally:479                    sock.close()480                    break481    # TODO: Add this back, send heartbeat to followers482    def recv_heartbeat(self, data):483        leader_id = int(data.split('_')[1])484        timestamp = float(data.split('_')[2])485        486        if self.leader == -1 and leader_id >= 0:487            self.leader = leader_id488            self.leaderHeartBeat = (self.leader, time.time())489        elif self.leader == leader_id:490            self.leaderHeartBeat = (self.leader, time.time())491        elif self.leader != leader_id:492            self.leader = leader_id493            self.leaderHeartBeat = (self.leader, time.time())494        # self.log('Proposer #{} Receiving "{}" from Leader #{}'.format(495        #               self.server_id, data, self.leader))496        return497    def log (self, msg, verbose=False):498        if (not VERBOSE) and verbose:499            return500        print('[S{}] {}'.format(self.server_id, msg))501    def is_leader (self):502        return self.leader == self.server_id503    def electLeader(self, increaseProposalNum=False):504        self.abortWaitTime *= 1.5505        if increaseProposalNum is True:506            self.proposal_Number += self.total_nodes507        send_msg = 'prepare_%d_%d' % (self.proposal_Number, self.server_id)508        tmpRecvs = []509        if self.leader != -1: return510        for i in range(self.total_nodes):511            if i in self.failed_acceptors:512                continue513            tmpRecvs.append(None)514            tmpRecvs[-1] = self.send_prepare(defaultPORT=PORT_ACCEPTOR, acceptorId=i, clientId=-1, cmdId=-1, payload=send_msg)515            if "abort" in tmpRecvs[-1]:516                return517        validRecvs = [(int(xx.split('_')[-1]), xx) for xx in tmpRecvs if "promise" in xx]518        if len(validRecvs) >= (self.total_nodes // 2) + 1:519            recvNoVal = {}520            for _, recv in validRecvs:521                recvNo = int(recv.split('_')[1])522                recvVal = int(recv.split('_')[2])523                if recvVal >= 0:524                    recvNoVal[recvNo] = recvVal525            if len(recvNoVal.keys()) > 0:526                self.log("Receive Accepted Value = {}".format(int(recvNoVal[sorted(recvNoVal.keys())[-1]])))527                self.log("FAILED_PROPOSERS = {}".format(self.failed_proposers))528            if len(recvNoVal.keys()) == 0:529                myVal = self.server_id530            elif int(recvNoVal[sorted(recvNoVal.keys())[-1]]) in self.failed_proposers:531                myVal = self.server_id532            else:533                myVal = recvNoVal[sorted(recvNoVal.keys())[-1]]534            send_msg = 'accept_' + str(self.proposal_Number) + '_' + str(myVal) + '_' + str(self.server_id)535            self.log("Sendding Accept Message = {}".format(send_msg))536            tmpRecvs = []537            validAccepted = 0538            for accId, _ in validRecvs:                    539                if i in self.failed_acceptors:540                    continue541                tmpRecvs.append(None)542                tmpRecvs[-1] = self.send_elect_accept(defaultPORT=PORT_ACCEPTOR, acceptorId=accId, payload=send_msg)543                if 'accepted' in tmpRecvs[-1]:544                    validAccepted += 1545                # if validAccepted >= self.total_nodes // 2 + 1:546                #     break547            if validAccepted >= self.total_nodes // 2 + 1:548                append_msg = ''549                if len(self.failed_proposers) > 0:550                    append_msg += '_' + ('_').join([str(x) for x in self.failed_proposers])551                send_msg = 'leader_' + str(myVal) + append_msg552                for i in range(self.total_nodes):553                    if i in self.failed_proposers or i == self.server_id:554                        continue555                    reply_msg = self.send_elect_decide(defaultPORT=PORT_PROPOSER, proposerId=i, payload=send_msg, toWhom='proposer')556                    if "leader" not in reply_msg or int(reply_msg.split('_')[1]) != myVal:557                        break558                self.leader = myVal559                self.slotId = self.pastSlotId + 1560                return561        self.proposal_Number = self.proposal_Number + self.total_nodes562    def processLeader(self, infos):563        leaderId = int(infos[1])564        if len(infos) > 2:565            for xx in infos[2:]:566                self.failed_proposers.add(int(xx))567        self.leader = leaderId568        self.log(OKGREEN + "Change leader to {}".format(self.leader) + ENDC)569        # self.log("Proposer%d's choose %d as leader" % (self.server_id, self.leader))570        571        reply_msg = 'leader_' + str(self.leader)572        573        return reply_msg574    # send prepare messages to all nodes575    def send_prepare(self, defaultPORT: int, acceptorId: int, clientId: int, cmdId: int, payload):576        if random.random() > 1.00:577            self.log("^" * 80 + "\ndropping {} to {}\n".format(payload, acceptorId) + "^" * 80)578            return "TimeOut"579        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)580        sock.settimeout(1)581        sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)582        sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)583        addr = ('localhost', defaultPORT + acceptorId)584        try:585            sock.connect(addr)586            sock.sendall((payload).encode('utf-8'))587            self.log('Proposer #{} Sending prepare_{} to Acceptor #{}'.format(588                      self.server_id, payload.split('_')[1], acceptorId))589            try:590                rtMessage = sock.recv(1024).decode('utf-8')591            except ConnectionResetError as e:592                self.log(">>>>>>\nacceptorId: {}\npayload: {}\n<<<<<<<".format(acceptorId, payload))593                raise e594        except ConnectionRefusedError:595            self.log("Acceptor #{} is down, removing it".format(acceptorId))596            self.failed_acceptors.add(acceptorId)597            rtMessage = "NoAcceptor"598        except socket.timeout as e:599            self.log("socket timeout {}\nAcceptor_id: {}\nCommandInfo: ({}, {})".format(e, acceptorId, clientId, cmdId))600            601        finally:602            sock.close()603            return rtMessage604            605    # send decide messages to other proposers(replicas)606    def send_elect_decide(self, defaultPORT: int, proposerId: int, payload, toWhom):607        if random.random() > 1.00:608            self.log("^" * 80 + "\ndropping {} to {}\n".format(payload, proposerId) + "^" * 80)609            time.sleep(1)610            return "TimeOut"611        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)612        sock.settimeout(1)613        sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)614        sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)615        addr = ('localhost', defaultPORT + proposerId)616        try:617            sock.connect(addr)618            sock.sendall((payload).encode('utf-8'))619            self.log('Proposer #{} Sending decide Leader #{} to {} #{}'.format(620                      self.server_id, self.server_id, toWhom, proposerId))621            try:622                return sock.recv(1024).decode('utf-8')623            except ConnectionResetError as e:624                self.log(">>>>>>\n{}}Id: {}\npayload: {}\n<<<<<<<".format(toWhom, proposerId, payload))625                raise e626        except ConnectionRefusedError:627            self.log("{} #{} is down, removing it".format(toWhom, proposerId))628            if toWhom.lower() == "proposer":629                self.failed_proposers.add(proposerId)630                return "NoProposer"631            elif toWhom.lower() == "acceptor":632                self.failed_acceptors.add(proposerId)633                return "Acceptor"634        except socket.timeout as e:635            self.log("socket timeout {}\n To {}_id #{} Elect Leader #{}".format(e, toWhom, proposerId, self.server_id))636            return "TimeOut"637        finally:638            sock.close()639    def send_elect_accept(self, defaultPORT: int, acceptorId: int, payload):640        if random.random() > 1.00:641            self.log("^" * 80 + "\ndropping {} to {}\n".format(payload, acceptorId) + "^" * 80)642            return "TimeOut"643        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)644        sock.settimeout(1)645        sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)646        sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)647        addr = ('localhost', defaultPORT + acceptorId)648        try:649            sock.connect(addr)650            sock.sendall((payload).encode('utf-8'))651            self.log('Proposer #{} Sending elect accept to Acceptor #{}'.format(652                      self.server_id, acceptorId))653            try:654                return sock.recv(1024).decode('utf-8')655            except ConnectionResetError as e:656                self.log(">>>>>>\nacceptorId: {}\npayload: {}\n<<<<<<<".format(acceptorId, payload))657                raise e658        except ConnectionRefusedError:659            self.log("Acceptor #{} is down, removing it".format(acceptorId))660            self.failed_acceptors.add(acceptorId)661            return "NoAcceptor"662        except socket.timeout as e:663            self.log("socket timeout {}\nAcceptor_id: {}\nCommandInfo: ({}, {})".format(e, acceptorId, clientId, cmdId))664            return "TimeOut"665        finally:666            sock.close()667    def send_command_accept(self, defaultPORT: int, acceptorId: int, clientId: int, cmdId: int, payload):668        if random.random() > 1.00:669            self.log("^" * 80 + "\ndropping {} to {}\n".format(payload, acceptorId) + "^" * 80)670            return "TimeOut"671        rtMessage = ""672        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)673        sock.settimeout(1)674        sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)675        sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)676        addr = ('localhost', defaultPORT + acceptorId)677        try:678            sock.connect(addr)679            sock.sendall((payload).encode('utf-8'))680            self.log('Proposer #{} Sending command "{}" to Acceptor #{}'.format(681                      self.server_id, payload, acceptorId))682            try:683                rtMessage = sock.recv(1024).decode('utf-8')684            except ConnectionResetError as e:685                self.log(">>>>>>\nacceptorId: {}\npayload: {}\n<<<<<<<".format(acceptorId, payload))686                rtMessage = "Failed"687                raise e688        except ConnectionRefusedError:689            self.log("Acceptor #{} is down, removing it".format(acceptorId))690            self.failed_acceptors.add(acceptorId)691            rtMessage = "Failed"692        except socket.timeout as e:693            self.log("socket timeout {}\nAcceptor_id: {}\nCommandInfo: ({}, {})".format(e, acceptorId, clientId, cmdId))694            rtMessage = "TimeOut"695        finally:696            sock.close()697            return rtMessage698    def send_command_decide(self, defaultPORT: int, proposerId: int, clientId: int, cmdId: int, payload):699        if random.random() > 1.00:700            self.log("^" * 80 + "\ndropping {} to {}\n".format(payload, proposerId) + "^" * 80)701            time.sleep(1)702            return "TimeOut"703        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)704        sock.settimeout(1)705        sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)706        sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)707        addr = ('localhost', defaultPORT + proposerId)708        try:709            sock.connect(addr)710            sock.sendall((payload).encode('utf-8'))711            self.log('SlotID: #{}, Proposer #{} Sending decide command {} to Proposer #{}'.format(712                      self.slotId, self.server_id, payload, proposerId))713            try:714                rtMessage = sock.recv(1024).decode('utf-8')715            except ConnectionResetError as e:716                self.log(">>>>>>\nproposerId: {}\npayload: {}\n<<<<<<<".format(proposerId, payload))717                raise e718        except ConnectionRefusedError:719            self.log("Proposer #{} is down, removing it".format(proposerId))720            self.failed_proposers.add(proposerId)721            rtMessage = 'No Proposer'722        except socket.timeout as e:723            self.log("socket timeout {}\nProposer_id: {}\nCommandInfo: ({}, {})".format(e, proposerId, clientId, cmdId))724            rtMessage = 'No Proposer'725        finally:726            sock.close()727            return rtMessage728    def processDecide(self, infos):729        clientId = int(infos[1])730        cmdId = int(infos[2])731        cmdContent = infos[3]732        slotId = int(infos[4])733        # assert slotId == self.slotId, "Proposer%d's Slot ID %d does not equal to Recv Slot ID %d" % (slotId, slotId, self.slotId)734        if self.pastCommands.get((clientId, cmdId), False) is False:735            self.slotId = slotId736            self.pastCommands[(clientId, cmdId)] = (slotId, cmdContent)737        reply_msg = 'stored_' + str(clientId) + '_' + str(cmdId) + '_' + cmdContent738        739        return reply_msg740    # handle a client connection741    def processClient(self, infos):742        clientId = infos[1]743        cmdId = infos[2]744        cmdContent = infos[3]745        746        if self.pastCommands.get((clientId, cmdId), False) is not False:747            self.log("Command ({}, {}, {}) is already executed".format(clientId, cmdId, cmdContent))748            return749        elif self.is_leader() is False:750            self.log("I am not leader, store Command ({}, {}, {}) in futureCommands".format(clientId, cmdId, cmdContent))751            self.futureCommands[(int(clientId), int(cmdId))] = ('_').join(infos)752            return753        else:754            self.log("I am leader, store Command ({}, {}, {}) in futureCommands".format(clientId, cmdId, cmdContent))755            self.futureCommands[(int(clientId), int(cmdId))] = ('_').join(infos)756            self.log("I am leader, send Command ({}, {}, {}) to Acceptors".format(clientId, cmdId, cmdContent))757            send_msg = 'accept_' + str(self.proposal_Number) + '_' + cmdContent + '_' + str(self.server_id)758            tmpRecvs = []759            for acceptorId in range(self.total_nodes):760                if acceptorId not in self.failed_acceptors:761                    tmpRecvs.append(None)762                    tmpRecvs[-1] = self.send_command_accept(763                        defaultPORT=PORT_ACCEPTOR, 764                        acceptorId=acceptorId, 765                        clientId=clientId, 766                        cmdId=cmdId, 767                        payload=send_msg,768                    )769                    self.log("Receive accepted message {} from Acceptor {}".format(tmpRecvs[-1], acceptorId))770            NumAccepted = len([xx for xx in tmpRecvs if isinstance(xx, str) and 'accepted' in xx])771            if NumAccepted < (self.total_nodes // 2) + 1:772                773                self.log("Reply from acceptor is not enough({}), store Command ({}, {}, {}) to futureCommands".format(NumAccepted, clientId, cmdId, cmdContent))774                self.futureCommands[(int(clientId), int(cmdId))] = ('_').join(infos)775                # reply_msg = 'resend_' + str(clientId) + '_' + str(cmdId) + '_' + str(cmdContent) + '_' + str(self.server_id)776            else:777                decide_msg = 'decide_' + str(clientId) + '_' + str(cmdId) + '_' + str(cmdContent) + '_' + str(self.slotId)778                tmpRecvs = []779                self.log("I am leader, send Decide of Command ({}, {}, {}) to Proposers".format(clientId, cmdId, cmdContent))780                for proposerId in range(self.total_nodes):781                    if proposerId != self.server_id and proposerId not in self.failed_proposers:    782                        tmpRecvs.append(None)783                        tmpRecvs[-1] = self.send_command_decide(784                            defaultPORT=PORT_PROPOSER, 785                            proposerId=proposerId, 786                            clientId=clientId, 787                            cmdId=cmdId, 788                            payload=decide_msg,789                        )790                self.processDecide(decide_msg.split('_'))791                for proposerId in self.sendDecideProposers:792                    self.send_command_decide(793                        defaultPORT=PORT_PROPOSER, 794                        proposerId=proposerId, 795                        clientId=clientId, 796                        cmdId=cmdId, 797                        payload=decide_msg,798                    )799                self.slotId += 1800                # NumExecuted = len([xx for xx in tmpRecvs if isinstance(xx, str) and 'stored' in xx])801                # if NumExecuted == (self.total_nodes // 2):802                #     self.futureCommands[(int(clientId), int(cmdId))] = infos.joins('_')803                # else:804                #     if self.pastCommands.get((clientId, cmdId), False) is False:805                #         pastCommandsPair = self.execute(clientId, cmdId, cmdContent)806                #         self.slotId += 1807                #         self.pastCommands[(clientId, cmdId)] = pastCommandsPair808                #     reply_msg = 'proceeded_' + str(clientId) + '_' + str(cmdId) + '_' + self.pastCommands[(clientId, cmdId)][2]809                #     return reply_msg810    def log_progress(self):811        print("*" * 80 + "\n" + self.progress_str() + "\n" + "*" * 80)812    # when receiving a prepare reply813    # def on_prepare_reply (self, reply):814    #     if not self.is_leader() and not self.is_electing:815    #         return # only leader follows up with accept816    #     idx = reply['instance']817    #     # stores info into progress818    #     pg_ref = self.progress[idx]819    #     prep_ref = pg_ref['prepare']820    #     if reply['server_id'] in prep_ref:821    #         assert prep_ref[reply['server_id']] == reply, \822    #                 '{} != {}'.format(prep_ref[reply['server_id']], reply)823    #     prep_ref[reply['server_id']] = reply824    #     # do we receive a majority of replies?825    #     if len(prep_ref) > self.total_nodes / 2:826    #         # find out the highest numbered proposal827    #         hn = -1828    #         hv = ''829    #         for sid, replied_reply in prep_ref.items():830    #             if replied_reply['prep_n'] > hn:831    #                 hn = replied_reply['prep_n']832    #                 hv = replied_reply['prep_value']833    #         assert hn >= 0834    #         reply['command'] = hv835    #         self.send_accept(reply)836        837    838                    839    # send learn messages to all nodes840    # def send_learn (self, data, cmd):841    #     payload = self.init_payload(data)842    #     payload['type'] = T_LEARN843    #     payload['command'] = cmd844    #     replies = self.send_all(payload)845    #     reply = self.check_stale(replies)846    #     if reply is not None:847    #         self.on_learn(reply)848    #         return849    #     payload['server_id'] = self.server_id850    #     self.on_learn(payload)851    # when a learn message is received852    # def on_learn (self, request):853    #     idx = request['instance']854    #     cmd = request['command']855    #     # update states856    #     self.init_states_to(idx)857    #     self.states[idx] = cmd858    #     # update progress859    #     self.init_progress(idx)860    #     self.progress[idx]['command'] = cmd861    #     if 'client' in request:862    #         self.progress[idx]['client'] = request['client']863    #     # execute if possible864    #     self.execute()865    #     # debug866    #     self.log(self.states, verbose=True)867    #     self.log(self.progress, verbose=True)868    # execute the commands869    # def execute(self):870        871    #     for i in range(self.next_exe, len(self.states)):872    #         cmd = self.states[i]873    #         if cmd == S_UNSURE:874    #             break # a hole in the sequence, we can't execute further875    #         self.next_exe += 1876    #         if cmd.startswith(S_ELECT_LEADER_PREFIX):877    #             new_leader_id = int(cmd[len(S_ELECT_LEADER_PREFIX):])878    #             self.log("resetting leader to {}".format(new_leader_id))879    #             self.leader = new_leader_id880    #         elif cmd.startswith("lock_"):881    #             n_lock = int(cmd.lstrip("lock_"))882    #             assert n_lock >= 0, str(n_lock)883    #             assert n_lock < len(self.locks), str(n_lock)884    #             client = self.progress[i]['client']885    #             if self.locks[n_lock] is None:886    #                 self.locks[n_lock] = client887    #         elif cmd.startswith("unlock_"):888    #             n_lock = int(cmd.lstrip("unlock_"))889    #             assert n_lock >= 0, str(n_lock)890    #             assert n_lock < len(self.locks), str(n_lock)891    #             client = self.progress[i]['client']892    #             if self.locks[n_lock] == client:893    #                 self.locks[n_lock] = None894    #         else:895    #             raise Exception("unknown command: " + cmd)896    # insert initial instance if it doesn't exist before897    # def init_progress(self, idx: int):898    #     if not idx in self.progress:899    #         self.progress[idx] = INIT_PROGRESS()900            901    # insert values into states up to idx902    # def init_states_to(self, idx):903    #     end = len(self.states)904    #     if len(self.states) > idx:905    #         return # the idx already exists906    #     for i in range(end, idx + 1):907    #         self.states.append(S_UNSURE) # fill holes with S_UNSURE908    # copy re-usable fields into a new payload object909    # def init_payload (self, payload):910    #     stripped = {911    #         'instance': payload['instance']912    #     }913    #     if 'client' in payload:914    #         stripped['client'] = payload['client']915    #     return stripped916    # send a message to peer and immediately close connection917    # def send_msg(self, defaultPORT: int, target_id: int, payload, recv=True):918    #     if random.random() > 0.95:919    #         self.log("^" * 80 + "\ndropping {} to {}\n".format(payload, target_id) + "^" * 80)920    #         return # randomly drop message921    #     # self.msg_count += 1922    #     sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)923    #     if target_id == self.leader:924    #         sock.settimeout((self.server_id + random.random()) * 3)925    #     else:926    #         sock.settimeout(1)927    #     sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)928    #     sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)929    #     addr = ('localhost', defaultPORT + target_id)930    #     # payload['source'] = 'server'931    #     # payload['server_id'] = self.server_id932    #     try:933    #         sock.connect(addr)934    #         sock.sendall(json.dumps(payload).encode('utf-8'))935    #         self.log('Paxos #{}, sending {} to {}'.format(payload['instance'],936    #                   payload, target_id))937    #         if recv:938    #             try:939    #                 return json.loads(sock.recv(1024).decode('utf-8'))940    #             except ConnectionResetError as e:941    #                 self.log(">>>>>>\ntarget_id: {}\npayload: {}\n<<<<<<<".format(target_id, payload))942    #                 raise e943    #     except ConnectionRefusedError:944    #         self.log("peer {} is down, removing it".format(addr))945    #         self.failed_nodes.add(target_id)946    #         if target_id == self.leader:947    #             self.log("send_msg to leader {} failed, trigger election".format(addr))948    #             self.elect_leader()949    #     except socket.timeout as e:950    #         self.log("socket timeout {}\ntarget_id: {}\npayload: {}".format(e, target_id, payload))951    #         raise e952    #     finally:953    #         sock.close()954    # send to all followers (every nodes except myself)955    # def send_all (self, payload):956    #     self.log("send_all({})".format(payload))957    #     replies = []958    #     for i in range(1, self.total_nodes + 1):959    #         if not i == self.server_id and not (i in self.failed_nodes):960    #             self.log('send_all from {} to {}'.format(self.server_id, i))961    #             reply = self.send_msg(i, payload)962    #             if reply is not None:963    #                 replies.append((i, reply))964    #     return replies965    # check whether this server is the current leader966    # def notify(self):967    #     with self.handler_lock:968    #         if self.waiting == W_OK:969    #             return970    #         if time.time() > self.waiting_settime + WAITING_TIMEOUT:971    #             if self.waiting == W_WAITING_PREPARE_REPLIES:972    #                 self.send_prepare(*self.wait_args)973    #             elif self.waiting == W_WAITING_ACCEPT_REPLIES:974    #                 self.send_accept(*self.wait_args)975    #             else:976    #                 assert False, "invalid waiting: {}".format(self.waiting)977    # def elect_leader(self):978    #     with self.handler_lock:979    #         if self.leader not in self.failed_nodes:980    #             self.failed_nodes.add(self.leader)981    #         assert not self.is_electing982    #         self.is_electing = True983    #         idx = self.get_next_instance_idx()984    #         data = {985    #             'instance': idx,986    #             'command': S_ELECT_LEADER(self.server_id)987    #         }988    #         assert idx not in self.progress989    #         self.init_progress(idx)990    #         data['proposal_n'] = self.bump_next_proposal_n(idx)991    #         self.send_prepare(data)992# start server993def start (sid, total, recover=False):994    server = LockServer(sid, total, recover=recover)995    heartbeat_server_thr = HeartBeatRecvThread(sid, server)996    heartbeat_server_thr.start()997    heartbeat_sender_thr = HeartBeatSenderThread(server)998    heartbeat_sender_thr.start()999    redirect_sender_thr = RedirectSenderThread(server)1000    redirect_sender_thr.start()1001    fetch_server_thr = FetchRecvThread(sid, server)1002    fetch_server_thr.start()1003    heartbeat_checker_thr = HeartBeatCheckerThread(heartbeat_server_thr.server, server)1004    heartbeat_checker_thr.start()1005    # handle signal1006    def sig_handler (signum, frame):1007        heartbeat_checker_thr.stopped = True1008        heartbeat_sender_thr.stopped = True1009        redirect_sender_thr.stopped = True1010        heartbeat_checker_thr.join()1011        heartbeat_sender_thr.join()1012        redirect_sender_thr.join()1013        heartbeat_server_thr.server.shutdown()1014        heartbeat_server_thr.server.server_close()1015        heartbeat_server_thr.join()1016        fetch_server_thr.server.shutdown()1017        fetch_server_thr.server.server_close()1018        fetch_server_thr.join()1019        server.server_close()1020        exit(0)1021    # register signal handler1022    signal.signal(signal.SIGINT, sig_handler)1023    signal.signal(signal.SIGTERM, sig_handler)1024    # serve until explicit shutdown1025    ip, port = server.server_address1026    server.log('Listening on {}:{} ...'.format(ip, port))1027    server.serve_forever()1028if __name__ == "__main__":1029    if len(sys.argv) < 3:1030        print('Usage:\npython paxos_processor.py [server_id] [total_nodes] [-v]')1031        exit(0)1032    if len(sys.argv) == 4 and "v" in sys.argv[3]:1033        VERBOSE = True1034    else:1035        VERBOSE = False1036    if len(sys.argv) == 4 and "r" in sys.argv[3]:1037        RECOVER = True1038    else:1039        RECOVER = False1040    print("Start Recover Mode...")...

test_lock_server.py

Source:test_lock_server.py

1# Copyright 2011 OpenStack Foundation2# Copyright 2013 IBM Corp.3#4#    Licensed under the Apache License, Version 2.0 (the "License"); you may5#    not use this file except in compliance with the License. You may obtain6#    a copy of the License at7#8#         http://www.apache.org/licenses/LICENSE-2.09#10#    Unless required by applicable law or agreed to in writing, software11#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT12#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the13#    License for the specific language governing permissions and limitations14#    under the License.15import webob16import mock17from nova.api.openstack import common18from nova.api.openstack.compute.legacy_v2.contrib import admin_actions \19        as lock_server_v220from nova.api.openstack.compute import lock_server as lock_server_v2121from nova import context22from nova import exception23from nova import test24from nova.tests.unit.api.openstack.compute import admin_only_action_common25from nova.tests.unit.api.openstack import fakes26from nova.tests.unit import fake_instance27class LockServerTestsV21(admin_only_action_common.CommonTests):28    lock_server = lock_server_v2129    controller_name = 'LockServerController'30    authorization_error = exception.PolicyNotAuthorized31    _api_version = '2.1'32    def setUp(self):33        super(LockServerTestsV21, self).setUp()34        self.controller = getattr(self.lock_server, self.controller_name)()35        self.compute_api = self.controller.compute_api36        def _fake_controller(*args, **kwargs):37            return self.controller38        self.stubs.Set(self.lock_server, self.controller_name,39                       _fake_controller)40        self.mox.StubOutWithMock(self.compute_api, 'get')41    def test_lock_unlock(self):42        self._test_actions(['_lock', '_unlock'])43    def test_lock_unlock_with_non_existed_instance(self):44        self._test_actions_with_non_existed_instance(['_lock', '_unlock'])45    def test_unlock_not_authorized(self):46        self.mox.StubOutWithMock(self.compute_api, 'unlock')47        instance = self._stub_instance_get()48        self.compute_api.unlock(self.context, instance).AndRaise(49                exception.PolicyNotAuthorized(action='unlock'))50        self.mox.ReplayAll()51        body = {}52        self.assertRaises(self.authorization_error,53                          self.controller._unlock,54                          self.req, instance.uuid, body)55class LockServerTestsV2(LockServerTestsV21):56    lock_server = lock_server_v257    controller_name = 'AdminActionsController'58    authorization_error = webob.exc.HTTPForbidden59    _api_version = '2'60class LockServerPolicyEnforcementV21(test.NoDBTestCase):61    def setUp(self):62        super(LockServerPolicyEnforcementV21, self).setUp()63        self.controller = lock_server_v21.LockServerController()64        self.req = fakes.HTTPRequest.blank('')65    def test_lock_policy_failed(self):66        rule_name = "os_compute_api:os-lock-server:lock"67        self.policy.set_rules({rule_name: "project:non_fake"})68        exc = self.assertRaises(69                                exception.PolicyNotAuthorized,70                                self.controller._lock, self.req,71                                fakes.FAKE_UUID,72                                body={'lock': {}})73        self.assertEqual(74                      "Policy doesn't allow %s to be performed." % rule_name,75                      exc.format_message())76    def test_unlock_policy_failed(self):77        rule_name = "os_compute_api:os-lock-server:unlock"78        self.policy.set_rules({rule_name: "project:non_fake"})79        exc = self.assertRaises(80                                exception.PolicyNotAuthorized,81                                self.controller._unlock, self.req,82                                fakes.FAKE_UUID,83                                body={'unlock': {}})84        self.assertEqual(85                      "Policy doesn't allow %s to be performed." % rule_name,86                      exc.format_message())87    @mock.patch.object(common, 'get_instance')88    def test_unlock_policy_failed_with_unlock_override(self,89                                                       get_instance_mock):90        ctxt = context.RequestContext('fake', 'fake')91        instance = fake_instance.fake_instance_obj(ctxt)92        instance.locked_by = "fake"93        get_instance_mock.return_value = instance94        rule_name = ("os_compute_api:os-lock-server:"95                     "unlock:unlock_override")96        rules = {"os_compute_api:os-lock-server:unlock": "@",97                 rule_name: "project:non_fake"}98        self.policy.set_rules(rules)99        exc = self.assertRaises(100            exception.PolicyNotAuthorized, self.controller._unlock,101            self.req, fakes.FAKE_UUID, body={'unlock': {}})102        self.assertEqual(103            "Policy doesn't allow %s to be performed." % rule_name,...

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