TDengine/test/new_test_framework/utils/server/dnode.py

###################################################################
#           Copyright (c) 2016 by TAOS Technologies, Inc.
#                     All rights reserved.
#
#  This file is proprietary and confidential to TAOS Technologies.
#  No part of this file may be reproduced, stored, transmitted,
#  disclosed or used in any form or by any means other than as
#  expressly provided by the written permission from Jianhui Tao
#
###################################################################

# -*- coding: utf-8 -*-

import sys
import os
import os.path
import platform
import distro
import subprocess
from time import sleep
import base64
import json
import copy
from fabric2 import Connection
from shutil import which

# self
from ..log import *


class TDDnode:
    def __init__(self, index=1, level=1, disk=1):
        self.index = index
        self.level = level
        self.disk = disk
        self.dataDir = []
        self.running = 0
        self.deployed = 0
        self.testCluster = False
        self.valgrind = 0
        self.asan = False
        self.remoteIP = ""
        self.cfgDict = {
            "fqdn": "localhost",
            "monitor": "0",
            "maxShellConns": "30000",
            "locale": "en_US.UTF-8",
            "charset": "UTF-8",
            "asyncLog": "0",
            "mDebugFlag": "135",
            "dDebugFlag": "131",
            "vDebugFlag": "131",
            "tqDebugFlag": "135",
            "cDebugFlag": "135",
            "stDebugFlag": "135",
            "smaDebugFlag": "135",
            "jniDebugFlag": "131",
            "qDebugFlag": "131",
            "rpcDebugFlag": "135",
            "tmrDebugFlag": "131",
            "uDebugFlag": "131",
            "sDebugFlag": "131",
            "wDebugFlag": "131",
            "numOfLogLines": "100000000",
            "statusInterval": "1",
            "enableQueryHb": "1",
            "supportVnodes": "1024",
            "telemetryReporting": "0",
        }
        self.binPath = "/usr/bin/taosd"
        self.execPath = os.path.join(
            os.path.dirname(os.path.dirname(os.path.realpath(__file__))), "exec.sh"
        )

    def init(self, path, binPath, remoteIP=""):
        self.path = path
        self.binPath = binPath
        self.remoteIP = remoteIP
        if not self.remoteIP == "":
            try:
                self.config = eval(self.remoteIP)
                self.remote_conn = Connection(
                    host=self.config["host"],
                    port=self.config["port"],
                    user=self.config["user"],
                    connect_kwargs={"password": self.config["password"]},
                )
            except Exception as r:
                print(r)

    def setTestCluster(self, value):
        self.testCluster = value

    def setValgrind(self, value):
        self.valgrind = value

    def setAsan(self, value):
        self.asan = value
        # if value:
        #    selfPath = os.path.dirname(os.path.realpath(__file__))
        #    if ("community" in selfPath):
        #        self.execPath = os.path.abspath(self.path + "/community/test/utils/exec.sh")
        #    else:
        #        self.execPath = os.path.abspath(self.path + "/test/utils/exec.sh")

    def getDataSize(self):
        totalSize = 0

        if self.deployed == 1:
            for dirpath, dirnames, filenames in os.walk(self.dataDir):
                for f in filenames:
                    fp = os.path.join(dirpath, f)

                    if not os.path.islink(fp):
                        totalSize = totalSize + os.path.getsize(fp)

        return totalSize

    def addExtraCfg(self, option, value):
        self.cfgDict.update({option: value})

    def remoteExec(self, updateCfgDict, execCmd):
        valgrindStr = ""
        if self.valgrind == 1:
            valgrindStr = "-g"
        remoteCfgDict = copy.deepcopy(updateCfgDict)
        if "logDir" in remoteCfgDict:
            del remoteCfgDict["logDir"]
        if "dataDir" in remoteCfgDict:
            del remoteCfgDict["dataDir"]
        if "cfgDir" in remoteCfgDict:
            del remoteCfgDict["cfgDir"]
        remoteCfgDictStr = base64.b64encode(json.dumps(remoteCfgDict).encode()).decode()
        execCmdStr = base64.b64encode(execCmd.encode()).decode()
        with self.remote_conn.cd(
            (self.config["path"] + sys.path[0].replace(self.path, "")).replace(
                "\\", "/"
            )
        ):
            self.remote_conn.run(
                "python3 ./test.py %s -d %s -e %s"
                % (valgrindStr, remoteCfgDictStr, execCmdStr)
            )

    def deploy(self, *updatecfgDict):
        # logDir
        self.logDir = os.path.join(self.path, "dnode%d" % self.index, "log")
        # dataDir
        simPath = os.path.join(self.path, "dnode%d" % self.index)
        primary = 1
        if self.level == 1 and self.disk == 1:
            eDir = os.path.join(simPath, "data")
            self.dataDir.append(eDir)
        else:
            for i in range(self.level):
                for j in range(self.disk):
                    eDir = os.path.join(simPath, f"data{i}{j}")
                    self.dataDir.append(f"{eDir} {i} {primary}")
                    if primary == 1:
                        primary = 0

        # taos.cfg
        self.cfgDir = os.path.join(self.path, "dnode%d" % self.index, "cfg")
        self.cfgPath = os.path.join(self.cfgDir, "taos.cfg")

        for eDir in self.dataDir:
            cmd = "rm -rf " + eDir
            if os.system(cmd) != 0:
                tdLog.exit(cmd)

        cmd = "rm -rf " + self.logDir
        if os.system(cmd) != 0:
            tdLog.exit(cmd)

        cmd = "rm -rf " + self.cfgDir
        if os.system(cmd) != 0:
            tdLog.exit(cmd)

        # cmd = "mkdir -p " + self.dataDir
        # if os.system(cmd) != 0:
        #     tdLog.exit(cmd)
        for eDir in self.dataDir:
            os.makedirs(eDir.split(" ")[0])

        # cmd = "mkdir -p " + self.logDir
        # if os.system(cmd) != 0:
        #     tdLog.exit(cmd)
        os.makedirs(self.logDir)

        # cmd = "mkdir -p " + self.cfgDir
        # if os.system(cmd) != 0:
        #     tdLog.exit(cmd)
        os.makedirs(self.cfgDir)

        cmd = "touch " + self.cfgPath
        if os.system(cmd) != 0:
            tdLog.exit(cmd)

        if self.testCluster:
            self.startIP()

        if self.testCluster:
            self.cfg("masterIp", "192.168.0.1")
            self.cfg("secondIp", "192.168.0.2")
            self.cfg("publicIp", "192.168.0.%d" % (self.index))
            self.cfg("internalIp", "192.168.0.%d" % (self.index))
            self.cfg("privateIp", "192.168.0.%d" % (self.index))
        self.cfgDict["dataDir"] = self.dataDir
        self.cfgDict["logDir"] = self.logDir
        # self.cfg("dataDir",self.dataDir)
        # self.cfg("logDir",self.logDir)
        # print(updatecfgDict)
        isFirstDir = 1
        if bool(updatecfgDict) and updatecfgDict[0] and updatecfgDict[0][0]:
            for key, value in updatecfgDict[0][0].items():
                if (
                    key == "clientCfg"
                    and self.remoteIP == ""
                    and not platform.system().lower() == "windows"
                ):
                    continue
                if value == "dataDir":
                    if isFirstDir:
                        self.cfgDict.pop("dataDir")
                        self.cfg(value, key)
                        isFirstDir = 0
                    else:
                        self.cfg(value, key)
                else:
                    self.addExtraCfg(key, value)
        if self.remoteIP == "":
            for key, value in self.cfgDict.items():
                if type(value) == list:
                    for v in value:
                        self.cfg(key, v)
                else:
                    self.cfg(key, value)
        else:
            self.remoteExec(
                self.cfgDict, "tdDnodes.deploy(%d,updateCfgDict)" % self.index
            )

        self.deployed = 1
        tdLog.debug(
            "dnode:%d is deployed and configured by %s" % (self.index, self.cfgPath)
        )

    def getPath(self, tool="taosd"):
        return os.path.join(os.path.dirname(self.binPath), tool)
        # selfPath = os.path.dirname(os.path.realpath(__file__))

        # if ("community" in selfPath):
        #     projPath = selfPath[:selfPath.find("community")]
        # else:
        #     projPath = selfPath[:selfPath.find("tests")]

        # paths = []
        # for root, dirs, files in os.walk(projPath):
        #    if ((tool) in files or ("%s.exe"%tool) in files):
        #        rootRealPath = os.path.dirname(os.path.realpath(root))
        #        if ("packaging" not in rootRealPath):
        #            paths.append(os.path.join(root, tool))
        #            break
        # if (len(paths) == 0):
        #        return ""
        # return paths[0]

    def starttaosd(self):
        # binPath = self.getPath()

        if os.path.exists(self.binPath):
            tdLog.info("taosd found: %s" % self.binPath)
        else:
            tdLog.exit("taosd not found!")

        if self.deployed == 0:
            tdLog.exit("dnode:%d is not deployed" % (self.index))

        if self.valgrind == 0:
            if platform.system().lower() == "windows":
                cmd = "mintty -h never %s -c %s" % (self.binPath, self.cfgDir)
            else:
                if self.asan:
                    asanDir = "%s/asan/dnode%d.asan" % (self.path, self.index)
                    cmd = "nohup %s -c %s > /dev/null 2> %s & " % (
                        self.binPath,
                        self.cfgDir,
                        asanDir,
                    )
                else:
                    cmd = "nohup %s -c %s > /dev/null 2>&1 & " % (
                        self.binPath,
                        self.cfgDir,
                    )
        else:
            valgrindCmdline = (
                'valgrind --log-file="%s/../log/valgrind.log"  --tool=memcheck --leak-check=full --show-reachable=no --track-origins=yes --show-leak-kinds=all -v --workaround-gcc296-bugs=yes'
                % self.cfgDir
            )

            if platform.system().lower() == "windows":
                cmd = "mintty -h never %s %s -c %s" % (
                    valgrindCmdline,
                    self.binPath,
                    self.cfgDir,
                )
            else:
                cmd = "nohup %s %s -c %s 2>&1 & " % (
                    valgrindCmdline,
                    self.binPath,
                    self.cfgDir,
                )

            print(cmd)

        if not self.remoteIP == "":
            self.remoteExec(
                self.cfgDict,
                'tdDnodes.dnodes[%d].deployed=1\ntdDnodes.dnodes[%d].logDir="%%s/dnode%%d/log"%%(tdDnodes.dnodes[%d].path,%d)\ntdDnodes.dnodes[%d].cfgDir="%%s/dnode%%d/cfg"%%(tdDnodes.dnodes[%d].path,%d)\ntdDnodes.start(%d)'
                % (
                    self.index - 1,
                    self.index - 1,
                    self.index - 1,
                    self.index,
                    self.index - 1,
                    self.index - 1,
                    self.index,
                    self.index,
                ),
            )
            self.running = 1
        else:
            if os.system(cmd) != 0:
                tdLog.exit(cmd)
            self.running = 1
            tdLog.debug("dnode:%d is running with %s " % (self.index, cmd))
            if self.valgrind == 0:
                time.sleep(0.1)
                key1 = "from offline to online"
                bkey1 = bytes(key1, encoding="utf8")
                key2 = "TDengine initialized successfully"
                bkey2 = bytes(key2, encoding="utf8")
                logFile = self.logDir + "/taosdlog.0"
                i = 0
                # while not os.path.exists(logFile):
                #     sleep(0.1)
                #     i += 1
                #     if i > 10:
                #         break
                # tailCmdStr = 'tail -f '
                # if platform.system().lower() == 'windows':
                #     tailCmdStr = 'tail -n +0 -f '
                # popen = subprocess.Popen(
                #     tailCmdStr + logFile,
                #     stdout=subprocess.PIPE,
                #     stderr=subprocess.PIPE,
                #     shell=True)
                # pid = popen.pid
                # # print('Popen.pid:' + str(pid))
                # timeout = time.time() + 60 * 2
                # while True:
                #     line = popen.stdout.readline().strip()
                #     print(line)
                #     if bkey1 in line:
                #         popen.kill()
                #         break
                #     elif bkey2 in line:
                #         popen.kill()
                #         break
                #     if time.time() > timeout:
                #         print(time.time(),timeout)
                #         tdLog.exit('wait too long for taosd start')
                tdLog.debug("the dnode:%d has been started." % (self.index))
            else:
                tdLog.debug("wait 10 seconds for the dnode:%d to start." % (self.index))
                time.sleep(10)

    def start(self):
        # binPath = self.getPath()

        if os.path.exists(self.binPath):
            tdLog.info("taosd found: %s" % self.binPath)
        else:
            tdLog.exit("taosd not found!")

        if self.deployed == 0:
            tdLog.exit("dnode:%d is not deployed" % (self.index))

        if self.valgrind == 0:
            if platform.system().lower() == "windows":
                cmd = "mintty -h never %s -c %s" % (self.binPath, self.cfgDir)
            else:
                if self.asan:
                    asanDir = "%s/asan/dnode%d.asan" % (self.path, self.index)
                    cmd = "nohup %s -c %s > /dev/null 2> %s & " % (
                        self.binPath,
                        self.cfgDir,
                        asanDir,
                    )
                else:
                    cmd = "nohup %s -c %s > /dev/null 2>&1 & " % (
                        self.binPath,
                        self.cfgDir,
                    )
        else:
            valgrindCmdline = (
                'valgrind --log-file="%s/../log/valgrind.log"  --tool=memcheck --leak-check=full --show-reachable=no --track-origins=yes --show-leak-kinds=all -v --workaround-gcc296-bugs=yes'
                % self.cfgDir
            )

            if platform.system().lower() == "windows":
                cmd = "mintty -h never %s %s -c %s" % (
                    valgrindCmdline,
                    self.binPath,
                    self.cfgDir,
                )
            else:
                cmd = "nohup %s %s -c %s 2>&1 & " % (
                    valgrindCmdline,
                    self.binPath,
                    self.cfgDir,
                )

            print(cmd)

        if not self.remoteIP == "":
            self.remoteExec(
                self.cfgDict,
                'tdDnodes.dnodes[%d].deployed=1\ntdDnodes.dnodes[%d].logDir="%%s/dnode%%d/log"%%(tdDnodes.dnodes[%d].path,%d)\ntdDnodes.dnodes[%d].cfgDir="%%s/dnode%%d/cfg"%%(tdDnodes.dnodes[%d].path,%d)\ntdDnodes.start(%d)'
                % (
                    self.index - 1,
                    self.index - 1,
                    self.index - 1,
                    self.index,
                    self.index - 1,
                    self.index - 1,
                    self.index,
                    self.index,
                ),
            )
            self.running = 1
        else:
            os.system("rm -rf %s/taosdlog.0" % self.logDir)
            if os.system(cmd) != 0:
                tdLog.exit(cmd)
            self.running = 1
            tdLog.debug("dnode:%d is running with %s " % (self.index, cmd))
            if self.valgrind == 0:
                time.sleep(0.1)
                key = "from offline to online"
                bkey = bytes(key, encoding="utf8")
                logFile = self.logDir + "/taosdlog.0"
                i = 0
                while not os.path.exists(logFile):
                    sleep(0.1)
                    i += 1
                    if i > 50:
                        break
                with open(logFile) as f:
                    timeout = time.time() + 10 * 2
                    while True:
                        line = f.readline().encode("utf-8")
                        if bkey in line:
                            break
                        if time.time() > timeout:
                            tdLog.exit("wait too long for taosd start")
                    tdLog.debug("the dnode:%d has been started." % (self.index))
            else:
                tdLog.debug("wait 10 seconds for the dnode:%d to start." % (self.index))
                time.sleep(10)

    def startWithoutSleep(self):
        # binPath = self.getPath()

        if os.path.exists(self.binPath):
            tdLog.info("taosd found: %s" % self.binPath)
        else:
            tdLog.exit("taosd not found!")

        if self.deployed == 0:
            tdLog.exit("dnode:%d is not deployed" % (self.index))

        if self.valgrind == 0:
            if platform.system().lower() == "windows":
                cmd = "mintty -h never %s -c %s" % (self.binPath, self.cfgDir)
            else:
                if self.asan:
                    asanDir = "%s/asan/dnode%d.asan" % (self.path, self.index)
                    cmd = "nohup %s -c %s > /dev/null 2> %s & " % (
                        self.binPath,
                        self.cfgDir,
                        asanDir,
                    )
                else:
                    cmd = "nohup %s -c %s > /dev/null 2>&1 & " % (
                        self.binPath,
                        self.cfgDir,
                    )
        else:
            valgrindCmdline = (
                'valgrind  --log-file="%s/../log/valgrind.log"  --tool=memcheck --leak-check=full --show-reachable=no --track-origins=yes --show-leak-kinds=all -v --workaround-gcc296-bugs=yes'
                % self.cfgDir
            )
            if platform.system().lower() == "windows":
                cmd = "mintty -h never %s %s -c %s" % (
                    valgrindCmdline,
                    self.binPath,
                    self.cfgDir,
                )
            else:
                cmd = "nohup %s %s -c %s 2>&1 & " % (
                    valgrindCmdline,
                    self.binPath,
                    self.cfgDir,
                )
            print(cmd)

        if self.remoteIP == "":
            if os.system(cmd) != 0:
                tdLog.exit(cmd)
        else:
            self.remoteExec(
                self.cfgDict,
                'tdDnodes.dnodes[%d].deployed=1\ntdDnodes.dnodes[%d].logDir="%%s/dnode%%d/log"%%(tdDnodes.dnodes[%d].path,%d)\ntdDnodes.dnodes[%d].cfgDir="%%s/dnode%%d/cfg"%%(tdDnodes.dnodes[%d].path,%d)\ntdDnodes.startWithoutSleep(%d)'
                % (
                    self.index - 1,
                    self.index - 1,
                    self.index - 1,
                    self.index,
                    self.index - 1,
                    self.index - 1,
                    self.index,
                    self.index,
                ),
            )

        self.running = 1
        tdLog.debug("dnode:%d is running with %s " % (self.index, cmd))

    def stop(self):
        if self.asan:
            stopCmd = "%s -s stop -n dnode%d" % (self.execPath, self.index)
            tdLog.info("execute script: " + stopCmd)
            os.system(stopCmd)
            return

        if not self.remoteIP == "":
            self.remoteExec(
                self.cfgDict,
                "tdDnodes.dnodes[%d].running=1\ntdDnodes.dnodes[%d].stop()"
                % (self.index - 1, self.index - 1),
            )
            tdLog.info("stop dnode%d" % self.index)
            return
        if self.valgrind == 0:
            toBeKilled = "taosd"
        else:
            toBeKilled = "valgrind.bin"

        if self.running != 0:
            psCmd = (
                "ps -ef|grep -w %s| grep -v grep | awk '{print $2}' | xargs"
                % toBeKilled
            )
            processID = (
                subprocess.check_output(psCmd, shell=True).decode("utf-8").strip()
            )

            onlyKillOnceWindows = 0
            while processID:
                if not platform.system().lower() == "windows" or (
                    onlyKillOnceWindows == 0 and platform.system().lower() == "windows"
                ):
                    killCmd = "kill -INT %s > /dev/null 2>&1" % processID
                    if platform.system().lower() == "windows":
                        killCmd = "kill -INT %s > nul 2>&1" % processID
                    os.system(killCmd)
                    onlyKillOnceWindows = 1
                time.sleep(1)
                processID = (
                    subprocess.check_output(psCmd, shell=True).decode("utf-8").strip()
                )
            if not platform.system().lower() == "windows":
                for port in range(6030, 6041):
                    fuserCmd = "fuser -k -n tcp %d > /dev/null" % port
                    os.system(fuserCmd)
            if self.valgrind:
                time.sleep(2)

            self.running = 0
            tdLog.info("dnode:%d is stopped by kill -INT" % (self.index))

    def stoptaosd(self):
        tdLog.info("start to stop taosd on dnode: %d " % (self.index))
        # print(self.asan,self.running,self.remoteIP,self.valgrind)
        if self.asan:
            stopCmd = "%s -s stop -n dnode%d" % (self.execPath, self.index)
            tdLog.info("execute script: " + stopCmd)
            os.system(stopCmd)
            return

        if not self.remoteIP == "":
            self.remoteExec(
                self.cfgDict,
                "tdDnodes.dnodes[%d].running=1\ntdDnodes.dnodes[%d].stop()"
                % (self.index - 1, self.index - 1),
            )
            tdLog.info("stop dnode%d" % self.index)
            return
        if self.valgrind == 0:
            toBeKilled = "taosd"
        else:
            toBeKilled = "valgrind.bin"

        if self.running != 0:
            if platform.system().lower() == "windows":
                psCmd = (
                    "for /f %%a in ('wmic process where \"name='taosd.exe' and CommandLine like '%%dnode%d%%'\" get processId ^| xargs echo ^| awk ^'{print $2}^' ^&^& echo aa') do @(ps | grep %%a | awk '{print $1}' | xargs)"
                    % (self.index)
                )
            else:
                psCmd = (
                    "ps -ef | grep -w %s | grep dnode%d | grep -v grep | awk '{print $2}' | xargs"
                    % (toBeKilled, self.index)
                )
            processID = subprocess.check_output(psCmd, shell=True).decode("utf-8").strip()
            tdLog.info(f"psCmd:{psCmd}, processId:[{processID}]")
            onlyKillOnceWindows = 0
            while processID:
                if not platform.system().lower() == "windows" or (
                    onlyKillOnceWindows == 0 and platform.system().lower() == "windows"
                ):
                    killCmd = "kill -INT %s > /dev/null 2>&1" % processID
                    if platform.system().lower() == "windows":
                        killCmd = "kill -INT %s > nul 2>&1" % processID
                    os.system(killCmd)
                    onlyKillOnceWindows = 1
                    # tdLog.info(f"kill cmd:{killCmd}")
                time.sleep(1)
                processID = (
                    subprocess.check_output(psCmd, shell=True).decode("utf-8").strip()
                )
                tdLog.info(f"killed processID:{processID}")
            if self.valgrind:
                time.sleep(2)

            self.running = 0
            tdLog.info("dnode:%d is stopped by kill -INT" % (self.index))

    def forcestop(self):
        tdLog.info("start to force stop taosd on dnode: %d " % (self.index))
        
        if self.asan:
            stopCmd = "%s -s stop -n dnode%d -x SIGKILL" % (self.execPath, self.index)
            tdLog.info("execute script: " + stopCmd)
            os.system(stopCmd)
            return

        if not self.remoteIP == "":
            self.remoteExec(
                self.cfgDict,
                "tdDnodes.dnodes[%d].running=1\ntdDnodes.dnodes[%d].forcestop()"
                % (self.index - 1, self.index - 1),
            )
            tdLog.info("force stop dnode%d" % self.index)
            return
        if self.valgrind == 0:
            toBeKilled = "taosd"
        else:
            toBeKilled = "valgrind.bin"

        if self.running != 0:
            if platform.system().lower() == "windows":
                psCmd = (
                    "for /f %%a in ('wmic process where \"name='taosd.exe' and CommandLine like '%%dnode%d%%'\" get processId ^| xargs echo ^| awk ^'{print $2}^' ^&^& echo aa') do @(ps | grep %%a | awk '{print $1}' | xargs)"
                    % (self.index)
                )
            else:
                psCmd = (
                    "ps -ef | grep -w %s | grep dnode%d | grep -v grep | awk '{print $2}' | xargs"
                    % (toBeKilled, self.index)
                )
            processID = (
                subprocess.check_output(psCmd, shell=True).decode("utf-8").strip()
            )

            tdLog.info(f"psCmd:{psCmd}, processId:[{processID}]")
            onlyKillOnceWindows = 0
            while processID:
                if not platform.system().lower() == "windows" or (
                    onlyKillOnceWindows == 0 and platform.system().lower() == "windows"
                ):
                    killCmd = "kill -KILL %s > /dev/null 2>&1" % processID
                    if platform.system().lower() == "windows":
                        killCmd = "kill -KILL %s > nul 2>&1" % processID
                    os.system(killCmd)
                    onlyKillOnceWindows = 1
                    # tdLog.info(f"kill cmd:{killCmd}")
                time.sleep(1)
                processID = (
                    subprocess.check_output(psCmd, shell=True).decode("utf-8").strip()
                )
                tdLog.info(f"killed processID:{processID}")
            # for port in range(6030, 6041):
            #     fuserCmd = "fuser -k -n tcp %d" % port
            #     os.system(fuserCmd)
            if self.valgrind:
                time.sleep(2)

            self.running = 0
            tdLog.info("dnode:%d is stopped by kill -KILL" % (self.index))

    def startIP(self):
        cmd = "sudo ifconfig lo:%d 192.168.0.%d up" % (self.index, self.index)
        if os.system(cmd) != 0:
            tdLog.exit(cmd)

    def stopIP(self):
        cmd = "sudo ifconfig lo:%d 192.168.0.%d down" % (self.index, self.index)
        if os.system(cmd) != 0:
            tdLog.exit(cmd)

    def cfg(self, option, value):
        cmd = "echo %s %s >> %s" % (option, value, self.cfgPath)
        if os.system(cmd) != 0:
            tdLog.exit(cmd)

    def getDnodeRootDir(self, index):
        dnodeRootDir = os.path.join(self.path, "psim", "dnode%d" % index)
        return dnodeRootDir

    def getDnodesRootDir(self):
        dnodesRootDir = os.path.join(self.path, "psim")
        return dnodesRootDir