run_exec_lte-softmodem_tests.py

#! /usr/bin/python
#/*
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# * contributor license agreements.  See the NOTICE file distributed with
# * this work for additional information regarding copyright ownership.
# * The OpenAirInterface Software Alliance licenses this file to You under
# * the OAI Public License, Version 1.0  (the "License"); you may not use this file
# * except in compliance with the License.
# * You may obtain a copy of the License at
# *
# *      http://www.openairinterface.org/?page_id=698
# *
# * Unless required by applicable law or agreed to in writing, software
# * distributed under the License is distributed on an "AS IS" BASIS,
# * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# * See the License for the specific language governing permissions and
# * limitations under the License.
# *-------------------------------------------------------------------------------
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# \author Rohit Gupta
# \version 0.1
# @ingroup _test

import tempfile
import threading
import sys
import traceback
import wave
import os
import time
import datetime
import getpass
import math #from time import clock 
import xml.etree.ElementTree as ET
import re

import numpy as np

import log

from  openair import *

import paramiko

import subprocess
import commands
sys.path.append('/opt/ssh')
sys.path.append(os.path.expandvars('$OPENAIR_DIR/cmake_targets/autotests/tools/'))

from lib_autotest import *
import ssh
from ssh import SSHSession
import argparse

# \brief write a string to a file
# \param filename name of file
# \param string string to write
# \mode file opening mode (default=write)
def write_file(filename, string, mode="w"):
   text_file = open(filename, mode)
   text_file.write(string)
   text_file.close()
 
# \brief function to check if test case passed throughput test
# \param filename name of file which has throughput results (usually from iperf -s ...
# \param min_tput minimum throughput
# \param max_tuput maximum throughput
# \param average average throughput
# \param min_duration minimum duration of throughput
#The throughput values found in file must be higher than values from from arguments 2,3,4,5
#The function returns True if throughput conditions are saisfied else it returns fails
def tput_test(filename, min_tput, max_tput, average, min_duration):
   
   if os.path.exists(filename):
      with open (filename, "r") as myfile:
         data=myfile.read()
      p=re.compile('(\d*.\d*) Mbits/sec')
      array=p.findall(data)
      array = [ float(x) for x in array ]
      duration = array.__len__()
      if duration !=0:
        min_list = min(array) 
        max_list = max(array)
        average_list = np.mean(array)
      else:
        min_list = 0
        max_list = 0
        average_list=0
      tput_string=' ( '+ "min=%0.2f"  % min_list + ' Mbps / ' + "max=%0.2f" %  max_list + ' Mbps / ' + "avg=%0.2f" % average_list + ' Mbps / ' + "dur=%0.2f" % duration + ' s) ' 
      if (min_list >= min_tput and  max_list >= max_tput and average_list >= average and duration >= min_duration):
        return True , tput_string
      else:
        return False , tput_string
   else: 
      return False , tput_string

# \brief Convert string to float or return None if there is exception    
def try_convert_to_float(string, fail=None):
    try:
        return float(string)
    except Exception:
        return fail;

# \brief get throughput statistics from log file
# \param search_expr search expression found in test_case_list.xml file
# \param logfile_traffic logfile which has traffic statistics
def tput_test_search_expr (search_expr, logfile_traffic):
   result=0
   tput_string=''
   if search_expr !='':
       if search_expr.find('throughput_test')!= -1 :
          p= re.compile('min\s*=\s*(\d*.\d*)\s*Mbits/sec')
          min_tput=p.findall(search_expr)
          if min_tput.__len__()==1:
             min_tput = min_tput[0]
          else:
             min_tput = None

          p= re.compile('max\s*=\s*(\d*.\d*)\s*Mbits/sec')
          max_tput=p.findall(search_expr)
          if max_tput.__len__()==1:
             max_tput = max_tput[0]
          else:
             max_tput = None

          p= re.compile('average\s*=\s*(\d*.\d*)\s*Mbits/sec')
          avg_tput=p.findall(search_expr)
          if avg_tput.__len__()==1:
             avg_tput=avg_tput[0]
          else:
             avg_tput = None

          p= re.compile('duration\s*=\s*(\d*.\d*)\s*s')
          duration=p.findall(search_expr)
          if duration.__len__()==1:
             duration = duration[0]
          else:
             duration = None
          
          min_tput = try_convert_to_float(min_tput)
          max_tput = try_convert_to_float(max_tput)
          avg_tput = try_convert_to_float(avg_tput)
          duration = try_convert_to_float(duration)
          
          if (min_tput != None and max_tput != None  and avg_tput != None  and duration != None ):
             result, tput_string = tput_test(logfile_traffic, min_tput, max_tput, avg_tput, duration)
   else: 
      result=1

   return result, tput_string
      
# \brief function to copy files to/from remote machine
# \param username user with which to make sftp connection
# \param password password of user
# \param hostname host to connect
# \ports port of remote machine on which server is listening
# \paramList This is list of operations as a set {operation: "get/put", localfile: "filename", remotefile: "filename"
# \param logfile Ignored currently and set once at the beginning of program
def sftp_module (username, password, hostname, ports, paramList,logfile): 
   #localD = localfile
   #remoteD = remotefile
   #fd, paramiko_logfile  = tempfile.mkstemp()
   #res = os.close(fd )
   #paramiko logfile path should not be changed with multiple calls. The logs seem to in first file regardless
   error = ""
   #The lines below are outside exception loop to be sure to terminate the test case if the network connectivity goes down or there is authentication failure
   transport = paramiko.Transport(hostname, ports)
   transport.connect(username = username, password = password)
   sftp = paramiko.SFTPClient.from_transport(transport)
   #  index =0 
   for param in paramList:
      try:
        operation = param["operation"] 
        localD = param["localfile"]
        remoteD = param["remotefile"]
        if operation == "put":
          sftp.put(remotepath=remoteD, localpath=localD)
        elif operation == "get":
          sftp.get(remotepath=remoteD, localpath=localD)
        else :
          print "sftp_module: unidentified operation:<" + operation + "> Exiting now"
          print "hostname = " + hostname
          print "ports = " + ports
          print "localfile = " + localD
          print "remotefile = " + remoteD
          print "operation = " + operation
          sys.exit()
      except Exception, e:
         error = error + ' In function: ' + sys._getframe().f_code.co_name + ': *** Caught exception: '  + str(e.__class__) + " : " + str( e)
         error = error + '\n username = ' + username + '\n hostname = ' + hostname + '\n localfile = ' + localD + '\n remotefile = ' + remoteD + '\n operation = ' + operation + '\nlogfile = ' + logfile + '\n ports = ' + str(ports) + '\n'  
         error = error + traceback.format_exc()
         print error

   sftp.close()
   transport.close() 
   res = os.system('\n echo \'SFTP Module Log for Machine: <' + hostname + '> starts...\' >> ' + logfile + ' 2>&1 ')
   res = os.system('cat ' + paramiko_logfile + ' >> ' + logfile + ' 2>&1 \n')
   write_file(logfile, error, "a")
   res = os.system('\n echo \'SFTP Module Log for Machine: <' + hostname + '> ends...\' >> ' + logfile + ' 2>&1 \n')

# \brief bash script stub put at the end of scripts to terminate it 
# \param timeout_cmd terminate script after timeout_cmd seconds
# \param terminate_missing_procs if True terminate all the processes launched by script if one of them terminates prematurely (due to error)
def finalize_deploy_script (timeout_cmd, terminate_missing_procs='False'):
  cmd = 'declare -i timeout_cmd='+str(timeout_cmd) + '\n'
  if terminate_missing_procs == 'True':
    cmd = cmd +  """
    #The code below checks if one the processes launched in background has crashed.
    #If it does, then the code below terminates all the child processes created by this script
    declare -i wakeup_interval=1
    declare -i step=0
    echo \"Array pid =  ${array_exec_pid[@]}\"
    while [ "$step" -lt "$timeout_cmd" ]
      do
       declare -i break_while_loop=0
       #Iterate over each process ID in array_exec_pid
       for i in "${array_exec_pid[@]}"
       do
        numchild=`pstree -p $i | perl -ne 's/\((\d+)\)/print " $1"/ge' |wc -w`
        echo "PID = $i, numchild = $numchild"
        if  [ "$numchild" -eq "0" ] ; then
            echo "Process ID $i has finished unexpectedly. Now preparing to kill all the processes "
            break_while_loop=1
            break
        fi
     done
    if  [ "$break_while_loop" -eq "1" ] ; then
             break
    fi
    step=$(( step + wakeup_interval ))
    sleep $wakeup_interval
    done
    echo "Final time step (Duration of test case) = $step "
    date
    """
  else:
    #We do not terminate the script if one of the processes has existed prematurely
    cmd = cmd + 'sleep ' + str(timeout_cmd) + ' ; date  \n'
  
  return cmd

# \brief run python script and update config file params of test case
# \param oai module with already open connection
# \param config_string config string taken from xml file
# \param logdirRepo directory of remote repository
# \param python_script python script location
def update_config_file(oai, config_string, logdirRepo, python_script):
  cmd=""
  if config_string :
    stringArray = config_string.splitlines()
    #python_script = '$OPENAIR_DIR/targets/autotests/tools/search_repl.py'
    for string in stringArray:
       #split the string based on space now
       string1=string.split()
       cmd = cmd + 'python ' + python_script + ' ' + logdirRepo+'/'+string1[0] + '  ' + string1[1] +  ' '+ string1[2] + '\n'
       #cmd = cmd + 'perl -p -i  -e \'s/'+ string1[1] + '\\s*=\\s*"\\S*"\\s*/' + string1[1] + ' = "' + string1[2] +'"' + '/g\'   ' + logdirRepo + '/' +string1[0] + '\n'
  return cmd
  #result = oai.send_recv(cmd)

# \brief thread safe sshsession wrapper due to occasional connection issues with ssh
# \param machine name of machine
# \param username user login for remote machine
# \param key_file file name which has keys to enable passwordless login
# \param password password for remote machine
# \param logdir_remote remote directory
# \param logdir_local_base local directory
# \param operation operation to perform (get_all, put_all) transfers recursively for directories
def SSHSessionWrapper(machine, username, key_file, password, logdir_remote, logdir_local_base, operation):
  max_tries = 100
  i=0
  while i <= max_tries:
    i = i +1
    try:
       ssh = SSHSession(machine , username, key_file, password)
       if operation == "get_all":
          ssh.get_all(logdir_remote , logdir_local_base)
       elif operation == "put_all":
          ssh.put_all(logdir_local_base, logdir_remote )
       else:
          print "Error: Uknown operation in SSHSessionWrapper. Exiting now..."
          sys.exit(1)
       break 
    except Exception, e:
       error=''
       error = error + ' In Class = function: ' + sys._getframe().f_code.co_name + ': *** Caught exception: '  + str(e.__class__) + " : " + str( e)
       error = error + '\n username = ' + username + '\n machine = ' + machine + '\n logdir_remote = ' + logdir_remote + '\n logdir_local_base = ' + logdir_local_base 
       error = error + traceback.format_exc()
       print error
       print " Retrying again in 1 seconds"
       time.sleep(1)
       print "Continuing ..."
       if i ==max_tries:
          print "Fatal Error: Max no of retries reached. Exiting now..."
          sys.exit(1)


 
# \briefFunction to clean old programs that might be running from earlier execution
# \param oai - parameter for making connection to machine
# \parm programList list of programs that must be terminated before execution of any test case 
# \param CleanUpAluLteBox program to terminate AlU Bell Labs LTE Box
# \param ExmimoRfStop String to stop EXMIMO card (specified in test_case_list.xml)
def cleanOldPrograms(oai, programList, CleanUpAluLteBox, ExmimoRfStop, logdir, logdirOAI5GRepo):
  cmd = 'sudo -E killall -s INT -q -r ' + programList + ' ; sleep 5 ; sudo -E killall -9 -q -r ' + programList
  result = oai.send(cmd, True)
  print "Killing old programs..." + result
  programArray = programList.split()
  programListJoin = '|'.join(programArray)
  cmd = " ( date ;echo \"Starting cleaning old programs.. \" ; dmesg|tail ; echo \"Current disk space.. \" ; df -h )>& " + logdir + "/oai_test_setup_cleanup.log.`hostname` 2>&1 ; sync"
  result=oai.send_recv(cmd)
  cmd = cleanupOldProgramsScript + ' ' + '\''+programListJoin+'\''
  #result = oai.send_recv(cmd)
  #print result
  result = oai.send_expect_false(cmd, 'Match found', False)
  print "Looking for old programs..." + result
  res=oai.send_recv(CleanUpAluLteBox, True)
  cmd= " echo \"Starting EXmimoRF Stop... \"  >> " + logdir + "/oai_test_setup_cleanup.log.`hostname` 2>&1  ; sync ";
  oai.send_recv(cmd)
  cmd  = "( " + "cd " + logdirOAI5GRepo + " ; source oaienv ;  "  +  ExmimoRfStop + " ) >> " + logdir + "/oai_test_setup_cleanup.log.`hostname` 2>&1  ; sync "
  print "cleanoldprograms cmd = " + cmd
  res=oai.send_recv(cmd, False, timeout=600)
  cmd= " echo \"Stopping EXmimoRF Stop... \" >> " + logdir + "/oai_test_setup_cleanup.log.`hostname` 2>&1  ; sync ";
  oai.send_recv(cmd)

  #res = oai.send_recv(ExmimoRfStop, False)
  cmd = " ( date ;echo \"Finished cleaning old programs.. \" ; dmesg | tail)>> $HOME/.oai_test_setup_cleanup.log.`hostname` 2>&1 ; sync"
  res=oai.send_recv(cmd)

# \brief Class thread to launch a generic command on remote machine
# \param threadID number of thread (for book keeping)
# \param threadname string of threadname (for book keeping)
# \param machine machine name on which to run the command
# \param username username with which to login
# \param password password with which to login
# \param cmd command as a string to run on remote machine
# \parma sudo if True sudo is set
# \param timeout timeout of command in seconds 
class oaiThread (threading.Thread):
    def __init__(self, threadID, threadname, machine, username, password, cmd, sudo, timeout):
        threading.Thread.__init__(self)
        self.threadID = threadID
        self.threadname = threadname
        self.machine = machine
        self.username = username
        self.password = password
        self.cmd = cmd
        self.sudo = sudo
        self.timeout = timeout
    def run(self):
        try:
          oai = openair('localdomain',self.machine)
          oai.connect(self.username, self.password)
          print "Starting " + self.threadname + " on machine " + self.machine
          result = oai.send_recv(self.cmd, self.sudo, self.timeout)
          print "result = " + result
          print "Exiting " + self.threadname
          oai.disconnect()
        except Exception, e:
           error=''
           error = error + ' In class oaiThread, function: ' + sys._getframe().f_code.co_name + ': *** Caught exception: '  + str(e.__class__) + " : " + str( e)
           error = error + '\n threadID = ' + str(self.threadID) + '\n threadname = ' + self.threadname + '\n timeout = ' + str(self.timeout) + '\n machine = ' + self.machine + '\n cmd = ' + self.cmd + '\n timeout = ' + str(self.timeout) +  '\n username = ' + self.username + '\n'  
           error = error + traceback.format_exc()
           print error


# \brief This class runs test cases with class {execution, compilatation}
# \param threadID number of thread (for book keeping)
# \param name string of threadname (for book keeping)
# \param machine machine name on which to run the command
# \param logdirOAI5GRepo directory on remote machine which as openairinterface5g repo installed
# \param testcasename name of test case to run on remote machine
# \param CleanupAluLteBox string that contains commands to stop ALU Bell Labs LTEBox (specified in test_case_list.xml)
# \param user username with which to login
# \param password password with which to login
# \param timeout timeout of command in seconds
# \param ExmimoRfStop command to stop EXMIMO Card
class testCaseThread_generic (threading.Thread):
   def __init__(self, threadID, name, machine, logdirOAI5GRepo, testcasename,oldprogramList, CleanupAluLteBox, user, password, timeout, ExmimoRfStop):
       threading.Thread.__init__(self)
       self.threadID = threadID
       self.name = name
       self.testcasename = testcasename
       self.timeout = timeout
       self.machine = machine
       self.logdirOAI5GRepo = logdirOAI5GRepo
       self.oldprogramList = oldprogramList
       self.CleanupAluLteBox = CleanupAluLteBox
       self.password=password
       self.ExmimoRfStop = ExmimoRfStop
       self.user = user
   def run(self):
     try:
       mypassword=''
       #addsudo = 'echo \'' + mypassword + '\' | sudo -S -E '
       addpass = 'echo \'' + mypassword + '\' | '
       #user = getpass.getuser()
       print "Starting test case : " + self.testcasename + " On machine " + self.machine + " timeout = " + str(self.timeout) 
       oai = openair('localdomain',self.machine)
       oai.connect(self.user, self.password)
       #cleanOldPrograms(oai, self.oldprogramList, self.CleanupAluLteBox, self.ExmimoRfStop)
       logdir_local = os.environ.get('OPENAIR_DIR')
       logdir_local_testcase = logdir_local +'/cmake_targets/autotests/log/'+ self.testcasename
       logdir_local_base = logdir_local +'/cmake_targets/autotests/log/'
       logdir_remote_testcase = self.logdirOAI5GRepo + '/cmake_targets/autotests/log/' + self.testcasename
       logdir_remote = self.logdirOAI5GRepo + '/cmake_targets/autotests/log/'
       logfile_task_testcasename = logdir_local_testcase + '/test_task' + '_' + self.testcasename + '_.log'
       logfile_task_testcasename_out = logdir_remote + '/test_task_out' + '_' + self.testcasename + '_.log'
       #print "logdir_local_testcase = " + logdir_local_testcase
       #print "logdir_remote_testcase = " + logdir_remote_testcase
       #if os.path.exists(logdir_local_testcase) == True :
       #    os.removedirs(logdir_local_testcase)
       #os.mkdir(logdir_local_testcase)
       os.system("rm -fr " + logdir_local_testcase )
       os.system("mkdir -p " +  logdir_local_testcase)
       cmd = "mkdir -p " + logdir_remote_testcase
       res = oai.send_recv(cmd, False, self.timeout) 
       #print "res = " + res

       cmd =  "( cd " +  self.logdirOAI5GRepo + " \n "
       cmd = cmd + "source oaienv \n"
       cmd = cmd + "$OPENAIR_DIR/cmake_targets/autotests/run_exec_autotests.bash --run-group \"" + self.testcasename + "\" -p \'\'"
       cmd = cmd + " ) >& "   + logfile_task_testcasename_out + " ; " + "mkdir -p " + logdir_remote_testcase +  "; mv " + logfile_task_testcasename_out + " " +logdir_remote_testcase 
      
       #print "cmd = " + cmd
       res = oai.send_recv(cmd, False, self.timeout) 
       #print "res = " + res
       #print "ThreadID = " + str(self.threadID) + "ThreadName: " + self.name + " testcasename: " + self.testcasename + "Execution Result = " + res
       write_file(logfile_task_testcasename, cmd, mode="w")
       #Now we copy all the remote files
       #ssh = SSHSession(self.machine , username=user, key_file=None, password=self.password)
       #ssh.get_all(logdir_remote_testcase , logdir_local_base)
       SSHSessionWrapper(self.machine, self.user, None, self.password, logdir_remote_testcase, logdir_local_base, "get_all")
       print "Finishing test case : " + self.testcasename + " On machine " + self.machine
       #cleanOldPrograms(oai, self.oldprogramList, self.CleanupAluLteBox, self.ExmimoRfStop)
       #oai.kill(user,mypassword)
       oai.disconnect()
     except Exception, e:
         error=''
         error = error + ' In Class = testCaseThread_generic,  function: ' + sys._getframe().f_code.co_name + ': *** Caught exception: '  + str(e.__class__) + " : " + str( e)
         error = error + '\n threadID = ' + str(self.threadID) + '\n threadName = ' + self.name + '\n testcasename = ' + self.testcasename + '\n machine = ' + self.machine + '\n logdirOAI5GRepo = ' + self.logdirOAI5GRepo +  '\n' + '\n timeout = ' + str(self.timeout)  + '\n user = ' + self.user
         error = error + traceback.format_exc()
         print error
         print "Continuing with next test case..."
         #sys.exit()


       
# \bried function to run a command as a sudo
# \param cmd command as a string
# \param password password to be supplied   
def addsudo (cmd, password=""):
  cmd = 'echo \'' + password + '\' | sudo -S -E bash -c \' ' + cmd + '\' '
  return cmd

# \brief handler for executing test cases (compilation, execution)
# \param name of testcase
# \param threadListGeneric list of threads which are already running on remote machines
# \param oldprogramList list of programs which must be terminated before running a test case
# \param logdirOAI5GRepo directory on remote machine which as openairinterface5g repo installed
# \param MachineList list of all machines on which generic test cases can be run
# \param user username with which to login
# \param password password with which to login
# \param CleanupAluLteBox string that contains commands to stop ALU Bell Labs LTEBox (specified in test_case_list.xml)
# \param timeout timeout of command in seconds
# \param ExmimoRfStop command to stop EXMIMO Card
def handle_testcaseclass_generic (testcasename, threadListGeneric, oldprogramList, logdirOAI5GRepo, MachineList, user, password, CleanupAluLteBox,timeout, ExmimoRfStop):
  try:
    mypassword=password
    MachineListFree=[]
    threadListNew=[]
    while MachineListFree.__len__() == 0 :
       MachineListBusy=[]
       MachineListFree=[]
       threadListNew=[]
       #first we need to find the list of free machines that we could run our test case
       if threadListGeneric.__len__() ==0 :
       #This means no thread is started yet
          MachineListFree = MachineList[:]
       else :
          for param in threadListGeneric :
             thread_id = param["thread_id"]
             machine = param["Machine"]
             testcasenameold = param["testcasename"]
             thread_id.join(1)
             if thread_id.isAlive() == True:
                threadListNew.append(param)
                print "thread_id is alive: testcasename: " + testcasenameold +  " on machine "+ machine
                if machine not in MachineListBusy:
                   MachineListBusy.append(machine)
             else :
                print "thread_id is finished: testcasename: " + testcasenameold + " on machine " + machine
                #threadListGeneric.remove(param)
                #if machine not in MachineListFree:
                #   MachineListFree.append(machine)
       #Now we check if there is at least one free machine
       MachineListFree = MachineList[:]
       for machine in MachineListBusy:
          if machine in MachineListFree:
            MachineListFree.remove(machine)
       print "MachineListFree = " + ','.join(MachineListFree)
       print "MachineListBusy = " + ','.join(MachineListBusy)
       print "MachineList = " + ','.join(MachineList)
    machine = MachineListFree[0]
    thread = testCaseThread_generic(1,"Generic Thread_"+testcasename+"_"+ "machine_", machine, logdirOAI5GRepo, testcasename, oldprogramList, CleanupAluLteBox, user, password, timeout, ExmimoRfStop)
    param={"thread_id":thread, "Machine":machine, "testcasename":testcasename}
    thread.start()
    threadListNew.append(param)
    return threadListNew
  except Exception, e:
     error=''
     error = error + ' In function: ' + sys._getframe().f_code.co_name + ': *** Caught exception: '  + str(e.__class__) + " : " + str( e)
     error = error + '\n testcasename = ' + testcasename + '\n logdirOAI5GRepo = ' + logdirOAI5GRepo + '\n MachineList = ' + ','.join(MachineList) + '\n timeout = ' + str(timeout) +  '\n' + 'user = ' + user
     error = error + traceback.format_exc()
     print error
     print "Continuing..."
     #sys.exit(1)

# \brief Blocking wait for all threads related to generic testcase execution, class (compilation and execution)
# \param threadListGeneric list of threads which are running on remote machines
# \param timeout time to wait on threads in seconds
def wait_testcaseclass_generic_threads(threadListGeneric, timeout = 1):
   threadListGenericNew=[]
   for param in threadListGeneric:
      thread_id = param["thread_id"]
      machine = param["Machine"]
      testcasenameold = param["testcasename"]
      thread_id.join(timeout)
      if thread_id.isAlive() == True:
         threadListGenericNew.append(param)
         print "thread_id on machine: " + machine + "  is still alive: testcasename: " + testcasenameold
         print " Exiting now..."
         sys.exit(1)
      else:
         print "thread_id on machine: " + machine + "  is stopped: testcasename: " + testcasenameold
         #threadListGeneric.remove(param)
   return threadListGenericNew


# \brief handler for executing test cases (lte-softmodem)
# \param testcase name of testcase
# \param oldprogramList list of programs which must be terminated before running a test case
# \param logdirOAI5GRepo directory on remote machine which has openairinterface5g repo installed
# \param logdirOpenaircnRepo directory on remote machine which has openair-cn repo installed
# \param MachineList list of all machines on which test cases can be run
# \param user username with which to login
# \param password password with which to login
# \param CleanupAluLteBox string that contains commands to stop ALU Bell Labs LTEBox (specified in test_case_list.xml)
# \param ExmimoRfStop command to stop EXMIMO Card
# \param nruns_lte-softmodem global parameter to override number of runs (nruns) within the test case
def handle_testcaseclass_softmodem (testcase, oldprogramList, logdirOAI5GRepo , logdirOpenaircnRepo, MachineList, user, password, CleanUpAluLteBox, ExmimoRfStop, nruns_lte_softmodem, timeout_cmd):
  #We ignore the password sent to this function for secuirity reasons for password present in log files
  #It is recommended to add a line in /etc/sudoers that looks something like below. The line below will run sudo without password prompt
  # your_user_name ALL=(ALL:ALL) NOPASSWD: ALL
  mypassword=''
  #addsudo = 'echo \'' + mypassword + '\' | sudo -S -E '
  addpass = 'echo \'' + mypassword + '\' | '
  #user = getpass.getuser()
  testcasename = testcase.get('id')
  testcaseclass = testcase.findtext('class',default='')
  if timeout_cmd == '':
     timeout_cmd = testcase.findtext('TimeOut_cmd',default='')
  timeout_cmd = int(float(timeout_cmd))
  #Timeout_thread is more than that of cmd to have room for compilation time, etc
  timeout_thread = timeout_cmd + 300 
  if nruns_lte_softmodem == '':
    nruns = testcase.findtext('nruns',default='')
  else:
    nruns = nruns_lte_softmodem
  nruns = int(float(nruns))
  tags = testcase.findtext('tags',default='')

  RRHMachine = testcase.findtext('RRH',default='')
  RRH_compile_prog = testcase.findtext('RRH_compile_prog',default='')
  RRH_compile_prog_args = testcase.findtext('RRH_compile_prog_args',default='')
  RRH_pre_exec = testcase.findtext('RRH_pre_exec',default='')
  RRH_pre_exec_args = testcase.findtext('RRH_pre_exec_args',default='')
  RRH_main_exec = testcase.findtext('RRH_main_exec',default='')
  RRH_main_exec_args = testcase.findtext('RRH_main_exec_args',default='')
  RRH_terminate_missing_procs = testcase.findtext('RRH_terminate_missing_procs',default='False')


  eNBMachine = testcase.findtext('eNB',default='')
  eNB_config_file = testcase.findtext('eNB_config_file',default='')
  eNB_compile_prog = testcase.findtext('eNB_compile_prog',default='')
  eNB_compile_prog_args = testcase.findtext('eNB_compile_prog_args',default='')
  eNB_pre_exec = testcase.findtext('eNB_pre_exec',default='')
  eNB_pre_exec_args = testcase.findtext('eNB_pre_exec_args',default='')
  eNB_main_exec = testcase.findtext('eNB_main_exec',default='')
  eNB_main_exec_args = testcase.findtext('eNB_main_exec_args',default='')
  eNB_traffic_exec = testcase.findtext('eNB_traffic_exec',default='')
  eNB_traffic_exec_args = testcase.findtext('eNB_traffic_exec_args',default='')
  eNB_terminate_missing_procs = testcase.findtext('eNB_terminate_missing_procs',default='False')
  eNB_search_expr_true = testcase.findtext('eNB_search_expr_true','')
  if re.compile('\w+').match(eNB_search_expr_true) != None:
      eNB_search_expr_true = eNB_search_expr_true + '  duration=' + str(timeout_cmd-90) + 's' 

  UEMachine = testcase.findtext('UE',default='')
  UE_config_file = testcase.findtext('UE_config_file',default='')
  UE_compile_prog = testcase.findtext('UE_compile_prog',default='')
  UE_compile_prog_args = testcase.findtext('UE_compile_prog_args',default='')
  UE_pre_exec = testcase.findtext('UE_pre_exec',default='')
  UE_pre_exec_args = testcase.findtext('UE_pre_exec_args',default='')
  UE_main_exec = testcase.findtext('UE_main_exec',default='')
  UE_main_exec_args = testcase.findtext('UE_main_exec_args',default='')
  UE_traffic_exec = testcase.findtext('UE_traffic_exec',default='')
  UE_traffic_exec_args = testcase.findtext('UE_traffic_exec_args',default='')
  UE_terminate_missing_procs = testcase.findtext('UE_terminate_missing_procs',default='False')
  UE_search_expr_true = testcase.findtext('UE_search_expr_true','')
  UE_stop_script =  testcase.findtext('UE_stop_script','')
  if re.compile('\w+').match(UE_search_expr_true) != None:
      UE_search_expr_true = UE_search_expr_true + '  duration=' + str(timeout_cmd-90) + 's'

  EPCMachine = testcase.findtext('EPC',default='')
  EPC_config_file = testcase.findtext('EPC_config_file',default='')
  EPC_compile_prog = testcase.findtext('EPC_compile_prog',default='')
  EPC_compile_prog_args = testcase.findtext('EPC_compile_prog_args',default='')
  HSS_compile_prog = testcase.findtext('HSS_compile_prog',default='')
  HSS_compile_prog_args = testcase.findtext('HSS_compile_prog_args',default='')
  
  EPC_pre_exec= testcase.findtext('EPC_pre_exec',default='')
  EPC_pre_exec_args = testcase.findtext('EPC_pre_exec_args',default='')  
  EPC_main_exec= testcase.findtext('EPC_main_exec',default='')
  EPC_main_exec_args = testcase.findtext('EPC_main_exec_args',default='')  
  HSS_main_exec= testcase.findtext('HSS_main_exec',default='')
  HSS_main_exec_args = testcase.findtext('HSS_main_exec_args',default='')  
  EPC_traffic_exec = testcase.findtext('EPC_traffic_exec',default='')
  EPC_traffic_exec_args = testcase.findtext('EPC_traffic_exec_args',default='')
  EPC_terminate_missing_procs = testcase.findtext('EPC_terminate_missing_procs',default='False')
  EPC_search_expr_true = testcase.findtext('EPC_search_expr_true','')
  if re.compile('\w+').match(EPC_search_expr_true) != None:
     EPC_search_expr_true = EPC_search_expr_true + '  duration=' + str(timeout_cmd-90) + 's'

  index_eNBMachine = MachineList.index(eNBMachine)
  index_UEMachine = MachineList.index(UEMachine)
  index_EPCMachine = MachineList.index(EPCMachine)
  cmd = 'cd ' + logdirOAI5GRepo + '; source oaienv ; env|grep OPENAIR'
  oai_eNB = openair('localdomain', eNBMachine)
  oai_eNB.connect(user, password)
  res= oai_eNB.send_recv(cmd)
  oai_UE = openair('localdomain', UEMachine)
  oai_UE.connect(user, password)
  res = oai_eNB.send_recv(cmd)
  oai_EPC = openair('localdomain', EPCMachine)
  oai_EPC.connect(user, password)
  res = oai_eNB.send_recv(cmd)
  if RRHMachine != '':
    cmd = 'cd ' + logdirOAI5GRepo + '; source oaienv ; env|grep OPENAIR'
    index_RRHMachine = MachineList.index(RRHMachine)
    oai_RRH = openair('localdomain', RRHMachine)
    oai_RRH.connect(user, password)
    res= oai_RRH.send_recv(cmd)
  #cleanOldPrograms(oai_eNB, oldprogramList, CleanUpAluLteBox, ExmimoRfStop)
  #cleanOldPrograms(oai_UE, oldprogramList, CleanUpAluLteBox, ExmimoRfStop)
  #cleanOldPrograms(oai_EPC, oldprogramList, CleanUpAluLteBox, ExmimoRfStop)
  logdir_local = os.environ.get('OPENAIR_DIR')
  if logdir_local is None:
     print "Environment variable OPENAIR_DIR not set correctly"
     sys.exit()
   
  #Make the log directory of test case
  #cmd = 'mkdir -p ' + logdir_eNB
  #result = oai_eNB.send_recv(cmd)
  #cmd = 'mkdir -p ' +  logdir_UE
  #result = oai_UE.send_recv(cmd)
  #cmd = 'mkdir -p ' + logdir_EPC
  #result = oai_EPC.send_recv(cmd)
  
  print "Updating the config files for ENB/UE/EPC..."
  #updating the eNB/UE/EPC configuration file from the test case 
  #update_config_file(oai_eNB, eNB_config_file, logdirOAI5GRepo)
  #update_config_file(oai_UE, UE_config_file, logdirOAI5GRepo)
  #update_config_file(oai_EPC, EPC_config_file, logdirOpenaircnRepo)
  test_result=1
  test_result_string=''
  start_time=time.time()
  for run in range(0,nruns):
    run_result=1
    run_result_string=''
    logdir_eNB = logdirOAI5GRepo+'/cmake_targets/autotests/log/'+ testcasename + '/run_' + str(run)
    logdir_RRH = logdirOAI5GRepo+'/cmake_targets/autotests/log/'+ testcasename + '/run_' + str(run)
    logdir_UE =  logdirOAI5GRepo+'/cmake_targets/autotests/log/'+ testcasename + '/run_' + str(run)
    logdir_EPC = logdirOpenaircnRepo+'/TEST/autotests/log/'+ testcasename + '/run_' + str(run)
    logdir_local_testcase = logdir_local + '/cmake_targets/autotests/log/'+ testcasename + '/run_' + str(run)
    #Make the log directory of test case
    if RRHMachine != '':
      cmd = 'rm -fr ' + logdir_RRH + ' ; mkdir -p ' + logdir_RRH
      result = oai_RRH.send_recv(cmd)
    cmd = 'rm -fr ' + logdir_eNB + ' ; mkdir -p ' + logdir_eNB
    result = oai_eNB.send_recv(cmd)
    cmd = 'rm -fr ' + logdir_UE + ' ; mkdir -p ' +  logdir_UE
    result = oai_UE.send_recv(cmd)
    cmd = 'rm -fr ' + logdir_EPC + '; mkdir -p ' + logdir_EPC
    result = oai_EPC.send_recv(cmd)
    cmd = ' rm -fr ' + logdir_local_testcase + ' ; mkdir -p ' + logdir_local_testcase
    result = os.system(cmd)

    if RRHMachine != '':
       logfile_compile_RRH = logdir_RRH + '/RRH_compile' + '_' + str(run) + '_.log'
       logfile_exec_RRH = logdir_RRH + '/RRH_exec' + '_' + str(run) + '_.log'
       logfile_pre_exec_RRH = logdir_RRH + '/RRH_pre_exec' + '_' + str(run) + '_.log'
       logfile_task_RRH_compile_out = logdir_RRH + '/RRH_task_compile_out' + '_' + str(run) + '_.log'
       logfile_task_RRH_compile = logdir_local_testcase + '/RRH_task_compile' + '_' + str(run) + '_.log'
       logfile_task_RRH_out = logdir_RRH + '/RRH_task_out' + '_' + str(run) + '_.log'
       logfile_task_RRH = logdir_local_testcase + '/RRH_task' + '_' + str(run) + '_.log'
       task_RRH_compile = ' ( uname -a ; date \n'
       task_RRH_compile = task_RRH_compile + 'cd ' + logdirOAI5GRepo + ' ; source oaienv ; source cmake_targets/tools/build_helper \n'
       task_RRH_compile = task_RRH_compile + 'env |grep OPENAIR  \n'
       if RRH_compile_prog != "":
         task_RRH_compile  = task_RRH_compile +  ' ( ' + RRH_compile_prog + ' '+ RRH_compile_prog_args + ' ) > ' + logfile_compile_RRH + ' 2>&1 \n'
       task_RRH_compile =  task_RRH_compile + ' date ) > ' + logfile_task_RRH_compile_out + ' 2>&1  '
       write_file(logfile_task_RRH_compile, task_RRH_compile, mode="w")

       task_RRH = ' ( uname -a ; date \n'
       task_RRH = task_RRH + ' export OPENAIR_TESTDIR=' + logdir_RRH + '\n'
       task_RRH = task_RRH + 'cd ' + logdirOAI5GRepo + ' ; source oaienv ; source cmake_targets/tools/build_helper \n'
       task_RRH = task_RRH + 'env |grep OPENAIR  \n' + 'array_exec_pid=() \n'

       if RRH_pre_exec != "":
          task_RRH  = task_RRH +  ' ( date; ' + RRH_pre_exec + ' '+ RRH_pre_exec_args + ' ) > ' + logfile_pre_exec_RRH + ' 2>&1 \n'
       if RRH_main_exec != "":
          task_RRH = task_RRH + ' ( date; ' + addsudo(RRH_main_exec + ' ' + RRH_main_exec_args, mypassword) + ' ) > ' + logfile_exec_RRH + ' 2>&1 & \n'
          task_RRH = task_RRH + 'array_exec_pid+=($!) \n'
          task_RRH = task_RRH + 'echo eNB_main_exec PID = $! \n'
       #terminate the eNB test case after timeout_cmd seconds
       task_RRH  = task_RRH + finalize_deploy_script (timeout_cmd, RRH_terminate_missing_procs) + ' \n'
       task_RRH  = task_RRH + 'handle_ctrl_c' + '\n' 
       task_RRH  = task_RRH + ' ) > ' + logfile_task_RRH_out + ' 2>&1  '
       write_file(logfile_task_RRH, task_RRH, mode="w")
    
    logfile_compile_eNB = logdir_eNB + '/eNB_compile' + '_' + str(run) + '_.log'
    logfile_exec_eNB = logdir_eNB + '/eNB_exec' + '_' + str(run) + '_.log'
    logfile_pre_exec_eNB = logdir_eNB + '/eNB_pre_exec' + '_' + str(run) + '_.log'
    logfile_traffic_eNB = logdir_eNB + '/eNB_traffic' + '_' + str(run) + '_.log'
    logfile_task_eNB_compile_out = logdir_eNB + '/eNB_task_compile_out' + '_' + str(run) + '_.log'
    logfile_task_eNB_compile = logdir_local_testcase + '/eNB_task_compile' + '_' + str(run) + '_.log'
    logfile_task_eNB_out = logdir_eNB + '/eNB_task_out' + '_' + str(run) + '_.log'
    logfile_task_eNB = logdir_local_testcase + '/eNB_task' + '_' + str(run) + '_.log'
    logfile_local_traffic_eNB_out = logdir_local_testcase + '/eNB_traffic' + '_' + str(run) + '_.log' 
    logfile_tshark_eNB = logdir_eNB + '/eNB_tshark' + '_' + str(run) + '_.log'
    logfile_pcap_eNB = logdir_eNB + '/eNB_tshark' + '_' + str(run) + '_.pcap'
    logfile_pcap_zip_eNB = logdir_eNB + '/eNB_tshark' + '_' + str(run) + '_.pcap.zip'
    logfile_pcap_tmp_eNB = '/tmp/' + '/eNB_tshark' + '_' + str(run) + '_.pcap'

    task_eNB_compile = ' ( uname -a ; date \n'
    task_eNB_compile = task_eNB_compile + 'cd ' + logdirOAI5GRepo + ' ; source oaienv ; source cmake_targets/tools/build_helper \n'
    task_eNB_compile = task_eNB_compile + 'env |grep OPENAIR  \n'
    task_eNB_compile = task_eNB_compile + update_config_file(oai_eNB, eNB_config_file, logdirOAI5GRepo, '$OPENAIR_DIR/cmake_targets/autotests/tools/search_repl.py') + '\n'
    if eNB_compile_prog != "":
       task_eNB_compile  = task_eNB_compile +  ' ( ' + eNB_compile_prog + ' '+ eNB_compile_prog_args + ' ) > ' + logfile_compile_eNB + ' 2>&1 \n'
    task_eNB_compile =  task_eNB_compile + ' date ) > ' + logfile_task_eNB_compile_out + ' 2>&1  '
    write_file(logfile_task_eNB_compile, task_eNB_compile, mode="w")

    task_eNB = ' ( uname -a ; date \n'
    task_eNB = task_eNB + ' export OPENAIR_TESTDIR=' + logdir_eNB + '\n'
    task_eNB = task_eNB + 'cd ' + logdirOAI5GRepo + ' ; source oaienv ; source cmake_targets/tools/build_helper \n'
    task_eNB = task_eNB + 'env |grep OPENAIR  \n' + 'array_exec_pid=() \n'

    if eNB_pre_exec != "":
       task_eNB  = task_eNB +  ' ( date; ' + eNB_pre_exec + ' '+ eNB_pre_exec_args + ' ) > ' + logfile_pre_exec_eNB + ' 2>&1 \n'
    if eNB_main_exec != "":
       task_eNB = task_eNB + ' ( date; ' + addsudo(eNB_main_exec + ' ' + eNB_main_exec_args, mypassword) + ' ) > ' + logfile_exec_eNB + ' 2>&1 & \n'
       task_eNB = task_eNB + 'array_exec_pid+=($!) \n'
       task_eNB = task_eNB + 'echo eNB_main_exec PID = $! \n'
    if eNB_traffic_exec != "":
       cmd_traffic = eNB_traffic_exec + ' ' + eNB_traffic_exec_args
       if cmd_traffic.find('-c') >= 0:
          cmd_traffic = cmd_traffic + ' -t ' + str(timeout_cmd - 60)
       task_eNB = task_eNB + ' (date;  ' + cmd_traffic + ' ) > ' + logfile_traffic_eNB + ' 2>&1 & \n'
       task_eNB = task_eNB + 'array_exec_pid+=($!) \n'
       task_eNB = task_eNB + 'echo eNB_traffic_exec PID = $! \n'

    task_eNB = task_eNB + ' (date; sudo rm -f ' + logfile_pcap_tmp_eNB + ' ; sudo -E tshark -i lo -s 65535 -a duration:' + str(timeout_cmd-10)+ ' -w ' + logfile_pcap_tmp_eNB+ ' ; sudo -E chown ' + user + ' ' + logfile_pcap_tmp_eNB + ' ; zip -j -9  ' + logfile_pcap_zip_eNB + ' ' + logfile_pcap_tmp_eNB + '   ) > ' + logfile_tshark_eNB + ' 2>&1 & \n '
    task_eNB = task_eNB + 'array_exec_pid+=($!) \n'
    task_eNB = task_eNB + 'echo eNB_tshark_exec PID = $! \n'
    #terminate the eNB test case after timeout_cmd seconds
    task_eNB  = task_eNB + finalize_deploy_script (timeout_cmd, eNB_terminate_missing_procs) + ' \n'
    #task_eNB  = task_eNB + 'sleep ' +  str(timeout_cmd) + ' \n'
    task_eNB  = task_eNB + 'handle_ctrl_c' + '\n' 
    task_eNB  = task_eNB + ' ) > ' + logfile_task_eNB_out + ' 2>&1  '
    write_file(logfile_task_eNB, task_eNB, mode="w")

    #task_eNB =  'echo \" ' + task_eNB + '\" > ' + logfile_script_eNB + ' 2>&1 ; ' + task_eNB 
    logfile_compile_UE = logdir_UE + '/UE_compile' + '_' + str(run) + '_.log'
    logfile_exec_UE = logdir_UE + '/UE_exec' + '_' + str(run) + '_.log'
    logfile_pre_exec_UE = logdir_UE + '/UE_pre_exec' + '_' + str(run) + '_.log'
    logfile_traffic_UE = logdir_UE + '/UE_traffic' + '_' + str(run) + '_.log'    
    logfile_task_UE_out = logdir_UE + '/UE_task_out' + '_' + str(run) + '_.log'
    logfile_task_UE = logdir_local_testcase + '/UE_task' + '_' + str(run) + '_.log'
    logfile_task_UE_compile_out = logdir_UE + '/UE_task_compile_out' + '_' + str(run) + '_.log'
    logfile_task_UE_compile = logdir_local_testcase + '/UE_task_compile' + '_' + str(run) + '_.log'
    logfile_local_traffic_UE_out = logdir_local_testcase + '/UE_traffic' + '_' + str(run) + '_.log' 

    task_UE_compile = ' ( uname -a ; date \n'
    task_UE_compile = task_UE_compile + 'array_exec_pid=()' + '\n'
    task_UE_compile = task_UE_compile + 'cd ' + logdirOAI5GRepo + '\n'  
    task_UE_compile = task_UE_compile + 'source oaienv \n'
    task_UE_compile = task_UE_compile + 'source cmake_targets/tools/build_helper \n'
    task_UE_compile = task_UE_compile + 'env |grep OPENAIR  \n'
    task_UE_compile = task_UE_compile + update_config_file(oai_UE, UE_config_file, logdirOAI5GRepo, '$OPENAIR_DIR/cmake_targets/autotests/tools/search_repl.py') + '\n'
    if UE_compile_prog != "":
       task_UE_compile = task_UE_compile + ' ( ' + UE_compile_prog + ' '+ UE_compile_prog_args + ' ) > ' + logfile_compile_UE + ' 2>&1 \n'
    task_UE_compile  = task_UE_compile + ' ) > ' + logfile_task_UE_compile_out + ' 2>&1 '
    write_file(logfile_task_UE_compile, task_UE_compile, mode="w")

    task_UE = ' ( uname -a ; date \n'
    task_UE = task_UE + 'array_exec_pid=()' + '\n'
    task_UE = task_UE + 'cd ' + logdirOAI5GRepo + '\n'  
    task_UE = task_UE + 'source oaienv \n'
    task_UE = task_UE + 'source cmake_targets/tools/build_helper \n'
    task_UE = task_UE + 'env |grep OPENAIR  \n'
    if UE_pre_exec != "":
       task_UE  = task_UE +  ' ( date; ' + UE_pre_exec + ' '+ UE_pre_exec_args + ' ) > ' + logfile_pre_exec_UE + ' 2>&1 \n'
    if UE_main_exec != "":
       task_UE = task_UE + ' ( date;  ' + addsudo(UE_main_exec + ' ' + UE_main_exec_args, mypassword)  + ' ) > ' + logfile_exec_UE + ' 2>&1 & \n'
       task_UE = task_UE + 'array_exec_pid+=($!) \n'
       task_UE = task_UE + 'echo UE_main_exec PID = $! \n'
    if UE_traffic_exec != "":
       cmd_traffic = UE_traffic_exec + ' ' + UE_traffic_exec_args
       if cmd_traffic.find('-c') >= 0:
          cmd_traffic = cmd_traffic + ' -t ' + str(timeout_cmd - 60)
       task_UE = task_UE + ' ( date;  ' + cmd_traffic + ' ) >' + logfile_traffic_UE + ' 2>&1 & \n'
       task_UE = task_UE + 'array_exec_pid+=($!) \n'
       task_UE = task_UE + 'echo UE_traffic_exec PID = $! \n'
    #terminate the UE test case after timeout_cmd seconds
    task_UE  = task_UE + finalize_deploy_script (timeout_cmd, UE_terminate_missing_procs) + ' \n'
    #task_UE  = task_UE + 'sleep ' +  str(timeout_cmd) + ' \n'
    task_UE  = task_UE + 'handle_ctrl_c' + '\n' 
    task_UE  = task_UE + ' ) > ' + logfile_task_UE_out + ' 2>&1 '
    write_file(logfile_task_UE, task_UE, mode="w")
    #task_UE = 'echo \" ' + task_UE + '\" > ' + logfile_script_UE + ' 2>&1 ; ' + task_UE

    logfile_compile_EPC = logdir_EPC + '/EPC_compile' + '_' + str(run) + '_.log'
    logfile_compile_HSS = logdir_EPC + '/HSS_compile' + '_' + str(run) + '_.log'
    logfile_exec_EPC = logdir_EPC + '/EPC_exec' + '_' + str(run) + '_.log'
    logfile_pre_exec_EPC = logdir_EPC + '/EPC_pre_exec' + '_' + str(run) + '_.log'
    logfile_exec_HSS = logdir_EPC + '/HSS_exec' + '_' + str(run) + '_.log'
    logfile_traffic_EPC = logdir_EPC + '/EPC_traffic' + '_' + str(run) + '_.log'
    logfile_task_EPC_out = logdir_EPC + '/EPC_task_out' + '_' + str(run) + '_.log'
    logfile_task_EPC = logdir_local_testcase + '/EPC_task' + '_' + str(run) + '_.log'
    logfile_task_EPC_compile_out = logdir_EPC + '/EPC_task_compile_out' + '_' + str(run) + '_.log'
    logfile_task_EPC_compile = logdir_local_testcase + '/EPC_task_compile' + '_' + str(run) + '_.log'
    logfile_local_traffic_EPC_out = logdir_local_testcase + '/EPC_traffic' + '_' + str(run) + '_.log' 

    task_EPC_compile = ' ( uname -a ; date \n'
    task_EPC_compile = task_EPC_compile + 'array_exec_pid=()' + '\n'
    task_EPC_compile = task_EPC_compile + 'cd ' + logdirOpenaircnRepo + ' ; source oaienv \n'
    task_EPC_compile = task_EPC_compile + update_config_file(oai_EPC, EPC_config_file, logdirOpenaircnRepo, logdirOpenaircnRepo+'/TEST/autotests/tools/search_repl.py') + '\n'
    task_EPC_compile = task_EPC_compile +  'source BUILD/TOOLS/build_helper \n'
    if EPC_compile_prog != "":
       task_EPC_compile = task_EPC_compile + '(' + EPC_compile_prog + ' ' + EPC_compile_prog_args +  ' ) > ' + logfile_compile_EPC + ' 2>&1 \n'
    if HSS_compile_prog != "":
       task_EPC_compile = task_EPC_compile + '(' + HSS_compile_prog + ' ' + HSS_compile_prog_args + ' ) > ' + logfile_compile_HSS + ' 2>&1 \n'
    task_EPC_compile  = task_EPC_compile + ' ) > ' + logfile_task_EPC_compile_out + ' 2>&1 ' 
    write_file(logfile_task_EPC_compile, task_EPC_compile, mode="w")
    
    task_EPC = ' ( uname -a ; date \n'
    task_EPC = task_EPC + ' export OPENAIRCN_TESTDIR=' + logdir_EPC + '\n'
    task_EPC = task_EPC + 'array_exec_pid=()' + '\n'
    task_EPC = task_EPC + 'cd ' + logdirOpenaircnRepo + '; source oaienv\n'
    task_EPC = task_EPC +  'source BUILD/TOOLS/build_helper \n'
    if EPC_pre_exec != "":
       task_EPC  = task_EPC +  ' ( date; ' + EPC_pre_exec + ' '+ EPC_pre_exec_args + ' ) > ' + logfile_pre_exec_EPC + ' 2>&1 \n'
    if HSS_main_exec !=  "":
       task_EPC  = task_EPC + '( date; ' + addsudo (HSS_main_exec + ' ' + HSS_main_exec_args, mypassword) + ' ) > ' + logfile_exec_HSS  +  ' 2>&1   & \n'
       task_EPC = task_EPC + 'array_exec_pid+=($!) \n'
       task_EPC = task_EPC + 'echo HSS_main_exec PID = $! \n'
    if EPC_main_exec !=  "":
       task_EPC  = task_EPC + '( date; ' + addsudo (EPC_main_exec + ' ' + EPC_main_exec_args, mypassword) + ' ) > ' + logfile_exec_EPC  +  ' 2>&1   & \n'
       task_EPC = task_EPC + 'array_exec_pid+=($!) \n'
       task_EPC = task_EPC + 'echo EPC_main_exec PID = $! \n'
    if EPC_traffic_exec !=  "":
       cmd_traffic = EPC_traffic_exec + ' ' + EPC_traffic_exec_args
       if cmd_traffic.find('-c') >= 0:
          cmd_traffic = cmd_traffic + ' -t ' + str(timeout_cmd - 60)
       task_EPC  = task_EPC + '( date; ' + cmd_traffic + ' ) > ' + logfile_traffic_EPC  +  ' 2>&1   & \n' 
       task_EPC = task_EPC + 'array_exec_pid+=($!) \n'  
       task_EPC = task_EPC + 'echo EPC_traffic_exec PID = $! \n'
    #terminate the EPC test case after timeout_cmd seconds   
    task_EPC = task_EPC + finalize_deploy_script (timeout_cmd, EPC_terminate_missing_procs) + '\n'
    #task_EPC  = task_EPC + 'sleep ' +  str(timeout_cmd) + '\n'
    task_EPC  = task_EPC + 'handle_ctrl_c' '\n' 
    task_EPC  = task_EPC + ' ) > ' + logfile_task_EPC_out + ' 2>&1 ' 
    write_file(logfile_task_EPC, task_EPC, mode="w")
    
    #first we compile all the programs but only for run_0
    if run == 0:
       thread_EPC = oaiThread(1, "EPC_thread", EPCMachine, user, password , task_EPC_compile, False, timeout_thread)
       thread_eNB = oaiThread(2, "eNB_thread", eNBMachine, user, password , task_eNB_compile, False, timeout_thread)
       thread_UE = oaiThread(3, "UE_thread", UEMachine, user, password  , task_UE_compile, False, timeout_thread) 
       if RRHMachine != '':
          thread_RRH = oaiThread(4, "RRH_thread", RRHMachine, user, password  , task_RRH_compile, False, timeout_thread) 
       threads=[]
       threads.append(thread_eNB)
       threads.append(thread_UE)
       threads.append(thread_EPC)
       if RRHMachine != '':
         threads.append(thread_RRH)
       # Start new Threads
       thread_eNB.start()
       thread_UE.start()
       thread_EPC.start()
       if RRHMachine != '':
         thread_RRH.start()
       #Wait for all the compile threads to complete
       for t in threads:
         t.join()

    #Now we execute all the threads
    thread_EPC = oaiThread(1, "EPC_thread", EPCMachine, user, password , task_EPC, False, timeout_thread)
    thread_eNB = oaiThread(2, "eNB_thread", eNBMachine, user, password , task_eNB, False, timeout_thread)
    thread_UE = oaiThread(3, "UE_thread", UEMachine, user, password  , task_UE, False, timeout_thread) 
    if RRHMachine != '':
        thread_RRH = oaiThread(4, "RRH_thread", RRHMachine, user, password  , task_RRH, False, timeout_thread) 
    threads=[]
    threads.append(thread_eNB)
    threads.append(thread_UE)
    threads.append(thread_EPC)
    if RRHMachine != '':
        threads.append(thread_RRH)
    # Start new Threads

    thread_eNB.start()
    thread_UE.start()
    thread_EPC.start()
    if RRHMachine != '':
        thread_RRH.start()
    #Wait for all the compile threads to complete
    for t in threads:
       t.join()
    #Now we get the log files from remote machines on the local machine
    if RRHMachine != '':
       cleanOldProgramsAllMachines([oai_eNB, oai_UE, oai_EPC, oai_RRH] , oldprogramList, CleanUpAluLteBox, ExmimoRfStop, [logdir_eNB, logdir_UE, logdir_EPC, logdir_RRH], logdirOAI5GRepo)
    else:
       cleanOldProgramsAllMachines([oai_eNB, oai_UE, oai_EPC] , oldprogramList, CleanUpAluLteBox, ExmimoRfStop, [logdir_eNB, logdir_UE, logdir_EPC], logdirOAI5GRepo)       
    logfile_UE_stop_script_out = logdir_UE + '/UE_stop_script_out' + '_' + str(run) + '_.log'
    logfile_UE_stop_script = logdir_local_testcase + '/UE_stop_script' + '_' + str(run) + '_.log'

    if UE_stop_script != "":
      cmd = ' ( uname -a ; date \n'
      cmd = cmd + 'cd ' + logdirOAI5GRepo + ' ; source oaienv ; source cmake_targets/tools/build_helper \n'
      cmd = cmd + 'env |grep OPENAIR  \n' + 'array_exec_pid=() \n'
      cmd = cmd + UE_stop_script + '\n'
      cmd = cmd + ') > ' + logfile_UE_stop_script_out + ' 2>&1 ' 
      write_file(logfile_UE_stop_script , cmd, mode="w")
      thread_UE = oaiThread(4, "UE_thread", UEMachine, user, password  , cmd, False, timeout_thread)
      thread_UE.start()
      thread_UE.join()
   
    #Now we change the permissions of the logfiles to avoid some of them being with root permissions
    cmd = 'sudo -E chown -R ' + user + ' ' + logdir_eNB
    res= oai_eNB.send_recv(cmd)
    print "Changing permissions of logdir <" + logdir_eNB + "> in eNB machine..." + res

    cmd = 'sudo -E chown -R ' + user + ' ' +  logdir_UE
    res= oai_UE.send_recv(cmd)
    print "Changing permissions of logdir <" + logdir_UE + "> in UE machine..." + res

    cmd = 'sudo -E chown -R ' + user + ' ' +  logdir_EPC
    res= oai_EPC.send_recv(cmd)
    print "Changing permissions of logdir <" + logdir_EPC + "> in EPC machine..." + res

    if RRHMachine != '':
       cmd = 'sudo -E chown -R ' + user + ' ' +  logdir_RRH
       res= oai_RRH.send_recv(cmd)
       print "Changing permissions of logdir <" + logdir_RRH + "> in RRH machine..." + res

    print "Copying files from EPCMachine : " + EPCMachine + "logdir_EPC = " + logdir_EPC
    SSHSessionWrapper(EPCMachine, user, None, password, logdir_EPC, logdir_local + '/cmake_targets/autotests/log/'+ testcasename, "get_all")

    print "Copying files from eNBMachine " + eNBMachine + "logdir_eNB = " + logdir_eNB
    SSHSessionWrapper(eNBMachine, user, None, password, logdir_eNB, logdir_local + '/cmake_targets/autotests/log/'+ testcasename, "get_all")

    print "Copying files from UEMachine : " + UEMachine + "logdir_UE = " + logdir_UE
    SSHSessionWrapper(UEMachine, user, None, password, logdir_UE, logdir_local + '/cmake_targets/autotests/log/'+ testcasename, "get_all")

    if RRHMachine != '':
       print "Copying files from RRHMachine : " + RRHMachine + "logdir_RRH = " + logdir_RRH
       SSHSessionWrapper(RRHMachine, user, None, password, logdir_RRH, logdir_local + '/cmake_targets/autotests/log/'+ testcasename, "get_all")

    
    #Currently we only perform throughput tests
    tput_run_string=''
    result, tput_string = tput_test_search_expr(eNB_search_expr_true, logfile_local_traffic_eNB_out)
    tput_run_string = tput_run_string + tput_string
    run_result=run_result&result
    result, tput_string = tput_test_search_expr(EPC_search_expr_true, logfile_local_traffic_EPC_out)
    run_result=run_result&result
    tput_run_string = tput_run_string + tput_string
    result, tput_string = tput_test_search_expr(UE_search_expr_true, logfile_local_traffic_UE_out)
    run_result=run_result&result
    tput_run_string = tput_run_string + tput_string
    
    if run_result == 1:  
      run_result_string = ' RUN_'+str(run) + ' = PASS'
    else:
      run_result_string = ' RUN_'+str(run) + ' = FAIL'

    #If there is assertion, we mark the test case as failure as most likely eNB crashed
    cmd = "grep -ilr \"assertion\" " + logdir_local_testcase + " | cat " 
    cmd_out = subprocess.check_output ([cmd], shell=True)
    if len(cmd_out) !=0 :
      run_result=0
      run_result_string = ' RUN_'+str(run) + ' = FAIL(Assert)'

    #If there is thread busy error, we mark the test case as failure as most likely eNB crashed
    cmd = "grep -ilr \"thread busy\" " + logdir_local_testcase + " | cat "
    cmd_out = subprocess.check_output ([cmd], shell=True)
    if len(cmd_out) !=0:
      run_result=0
      run_result_string = ' RUN_'+str(run) + ' = FAIL(Thread_Busy)'

    #If there is Segmentation fault, we mark the test case as failure as most likely eNB crashed
    cmd = "grep -ilr \"segmentation fault\" " + logdir_local_testcase + " | cat "
    cmd_out = subprocess.check_output ([cmd], shell=True)
    if len(cmd_out) !=0:
      run_result=0
      run_result_string = ' RUN_'+str(run) + ' = FAIL(SEGFAULT)'

    run_result_string = run_result_string + tput_run_string

    test_result=test_result & run_result
    test_result_string=test_result_string + run_result_string

    oai_eNB.disconnect()
    oai_UE.disconnect()
    oai_EPC.disconnect()
    #We need to close the new ssh session that was created  
    #if index_eNBMachine == index_EPCMachine:
    #    oai_EPC.disconnect()
  #Now we finalize the xml file of the test case
  end_time=time.time()
  duration= end_time - start_time
  xmlFile = logdir_local + '/cmake_targets/autotests/log/'+ testcasename + '/test.' + testcasename + '.xml'
  if test_result ==0: 
    result='FAIL'
  else:
    result = 'PASS'
  xml="\n<testcase classname=\'"+ testcaseclass +  "\' name=\'" + testcasename + "."+tags +  "\' Run_result=\'" + test_result_string + "\' time=\'" + str(duration) + " s \' RESULT=\'" + result + "\'></testcase> \n"
  write_file(xmlFile, xml, mode="w")


# \brief This function searches if test case is present in list of test cases that need to be executed by user
# \param testcasename the test case to search for
# \param testcasegroup list that is passed from the arguments
# \param test_case_exclude list of test cases excluded from execution (specified in test_case_list.xml)
def search_test_case_group(testcasename, testcasegroup, test_case_exclude):
    
    if test_case_exclude != "":
       testcase_exclusion_list=test_case_exclude.split()
       for entry in testcase_exclusion_list:
          if entry.find('+') >=0:
            match = re.search(entry, testcasename)
            if match:
               print "\nSkipping test case as it is found in black list: " + testcasename
               return False
          else:
             match = entry.find(testcasename)
             if match >=0:
                print "\nSkipping test case as it is found in black list: " + testcasename
                return False
    if testcasegroup == '':
         return True
    else:
      testcaselist = testcasegroup.split()
      for entry in testcaselist:
        if entry.find('+') >=0:
           match = re.search(entry, testcasename)
           if match:
              return True
        else:
           match = testcasename.find(entry)
           if match >=0:
             return True
    return False

# \brief thread that cleans up remote machines from pre-existing test case executions
# \param threadID number of thread (for book keeping)
# \param threadname name of thread (for book keeping)
# \param oai handler that can be used to execute programs on remote machines
# \param CleanUpOldProgs list of programs which must be terminated before running a test case (specified in test_case_list.xml)
# \param CleanupAluLteBox string that contains commands to stop ALU Bell Labs LTEBox (specified in test_case_list.xml)
# \param ExmimoRfStop command to stop EXMIMO Card
class oaiCleanOldProgramThread (threading.Thread):