private void initLogstash(String testName) {

    initLogstashHost();

    String pathToLogstash =
        SGTestHelper.getSGTestRootDir().replace("\\", "/") + "/src/main/resources/logstash";
    String confFilePath = pathToLogstash + "/logstash-shipper-client.conf";
    String fixedTestName = testName.substring(0, testName.length() - 2);
    String backupFilePath = pathToLogstash + "/logstash-shipper-client-" + fixedTestName + ".conf";

    if (process == null) {

      try {

        LogUtils.log("copying file " + confFilePath + " to " + backupFilePath);
        IOUtils.copyFile(confFilePath, backupFilePath);
        //                backupFilePath = IOUtils.backupFile(confFilePath);
        IOUtils.replaceTextInFile(
            backupFilePath,
            "<path_to_test_folder>",
            SGTestHelper.getSGTestRootDir().replace("\\", "/")
                + "/../"
                + suiteName
                + "/"
                + testName);
        IOUtils.replaceTextInFile(backupFilePath, "<suite_name>", suiteName);
        IOUtils.replaceTextInFile(backupFilePath, "<test_name>", testName);
        IOUtils.replaceTextInFile(backupFilePath, "<build_number>", buildNumber);
        IOUtils.replaceTextInFile(backupFilePath, "<version>", version);
        IOUtils.replaceTextInFile(backupFilePath, "<host>", logstashHost);

        String logstashJarPath =
            DeploymentUtils.getLocalRepository() + "net/logstash/1.2.2/logstash-1.2.2.jar";
        logstashLogPath = pathToLogstash + "/logstash-" + fixedTestName + ".txt";
        String cmdLine =
            "java -jar "
                + logstashJarPath
                + " agent -f "
                + backupFilePath
                + " -l "
                + logstashLogPath;

        final String[] parts = cmdLine.split(" ");
        final ProcessBuilder pb = new ProcessBuilder(parts);
        LogUtils.log("Executing Command line: " + cmdLine);

        TimeUnit.SECONDS.sleep(1);
        process = pb.start();

      } catch (Exception e) {
        e.printStackTrace();
      }
    }
  }
  private void initLogstash2(ITestResult tr) {

    initLogstashHost();

    String simpleClassName = tr.getTestClass().getRealClass().getSimpleName();
    String pathToLogstash =
        SGTestHelper.getSGTestRootDir().replace("\\", "/") + "/src/main/resources/logstash";
    String confFilePath2 = pathToLogstash + "/logstash-shipper-client-2.conf";
    String backupFilePath2 =
        pathToLogstash + "/logstash-shipper-client-2-" + simpleClassName + ".conf";
    File backupFile2 = new File(backupFilePath2);

    LogUtils.log(
        "trying to start logstash agent number 2. simple class name is " + simpleClassName);
    if (backupFile2.exists()) {
      LogUtils.log("the file " + backupFilePath2 + " already exists. not starting logstash");
    }

    if (!isAfter(tr) && !backupFile2.exists()) {

      try {
        //                backupFilePath2 = IOUtils.backupFile(confFilePath2);
        LogUtils.log("copying file " + confFilePath2 + " to " + backupFilePath2);
        IOUtils.copyFile(confFilePath2, backupFilePath2);
        IOUtils.replaceTextInFile(backupFilePath2, "<path_to_build>", SGTestHelper.getBuildDir());
        IOUtils.replaceTextInFile(
            backupFilePath2,
            "<suite_number>",
            "suite_" + System.getProperty("iTests.suiteId", "0"));
        IOUtils.replaceTextInFile(
            backupFilePath2,
            "<path_to_test_class_folder>",
            SGTestHelper.getSGTestRootDir().replace("\\", "/")
                + "/../"
                + suiteName
                + "/"
                + tr.getTestClass().getName());
        IOUtils.replaceTextInFile(backupFilePath2, "<suite_name>", suiteName);
        IOUtils.replaceTextInFile(backupFilePath2, "<test_name>", simpleClassName);
        IOUtils.replaceTextInFile(backupFilePath2, "<build_number>", buildNumber);
        IOUtils.replaceTextInFile(backupFilePath2, "<version>", version);
        IOUtils.replaceTextInFile(backupFilePath2, "<host>", logstashHost);

        String logstashJarPath =
            DeploymentUtils.getLocalRepository() + "net/logstash/1.2.2/logstash-1.2.2.jar";
        logstashLogPath2 = pathToLogstash + "/logstash-" + simpleClassName + "-2.txt";
        String cmdLine =
            "java -jar "
                + logstashJarPath
                + " agent -f "
                + backupFilePath2
                + " -l "
                + logstashLogPath2;

        final String[] parts = cmdLine.split(" ");
        final ProcessBuilder pb = new ProcessBuilder(parts);
        LogUtils.log("Executing Command line: " + cmdLine);

        process2 = pb.start();

      } catch (IOException e) {
        e.printStackTrace();
      }
    }
  }
public class SGTestNGListener extends TestListenerAdapter {

  protected String testMethodName;
  protected String suiteName;
  protected String buildNumber;
  protected String version;
  protected ScriptingContainer container;
  private Process process = null;
  private Process process2 = null;
  private String logstashLogPath;
  private String logstashLogPath2;
  private static final boolean enableLogstash =
      Boolean.parseBoolean(System.getProperty("iTests.enableLogstash", "false"));
  protected static final String CREDENTIALS_FOLDER =
      System.getProperty(
          "iTests.credentialsFolder",
          SGTestHelper.getSGTestRootDir() + "/src/main/resources/credentials");
  private static File propsFile = new File(CREDENTIALS_FOLDER + "/logstash/logstash.properties");
  protected String logstashHost;

  private static long testInvocationCounter = 1;
  private static final long maxCount = Long.getLong("sgtest.webui.numberOfTestRetries", 3) + 1;

  public SGTestNGListener() {
    if (enableLogstash) {
      LogUtils.log("in SGTestNGListener constructor");
    }
  }

  @Override
  public void onStart(ITestContext iTestContext) {
    suiteName = System.getProperty("iTests.suiteName", "sgtest");
    LogUtils.log("suite number is now (on start) - " + suiteName);

    if (enableLogstash) {
      buildNumber = System.getProperty("iTests.buildNumber");
      LogUtils.log("build number is now (on start) - " + buildNumber);
      version = System.getProperty("cloudifyVersion");
    }
  }

  private void initLogstash2(ITestResult tr) {

    initLogstashHost();

    String simpleClassName = tr.getTestClass().getRealClass().getSimpleName();
    String pathToLogstash =
        SGTestHelper.getSGTestRootDir().replace("\\", "/") + "/src/main/resources/logstash";
    String confFilePath2 = pathToLogstash + "/logstash-shipper-client-2.conf";
    String backupFilePath2 =
        pathToLogstash + "/logstash-shipper-client-2-" + simpleClassName + ".conf";
    File backupFile2 = new File(backupFilePath2);

    LogUtils.log(
        "trying to start logstash agent number 2. simple class name is " + simpleClassName);
    if (backupFile2.exists()) {
      LogUtils.log("the file " + backupFilePath2 + " already exists. not starting logstash");
    }

    if (!isAfter(tr) && !backupFile2.exists()) {

      try {
        //                backupFilePath2 = IOUtils.backupFile(confFilePath2);
        LogUtils.log("copying file " + confFilePath2 + " to " + backupFilePath2);
        IOUtils.copyFile(confFilePath2, backupFilePath2);
        IOUtils.replaceTextInFile(backupFilePath2, "<path_to_build>", SGTestHelper.getBuildDir());
        IOUtils.replaceTextInFile(
            backupFilePath2,
            "<suite_number>",
            "suite_" + System.getProperty("iTests.suiteId", "0"));
        IOUtils.replaceTextInFile(
            backupFilePath2,
            "<path_to_test_class_folder>",
            SGTestHelper.getSGTestRootDir().replace("\\", "/")
                + "/../"
                + suiteName
                + "/"
                + tr.getTestClass().getName());
        IOUtils.replaceTextInFile(backupFilePath2, "<suite_name>", suiteName);
        IOUtils.replaceTextInFile(backupFilePath2, "<test_name>", simpleClassName);
        IOUtils.replaceTextInFile(backupFilePath2, "<build_number>", buildNumber);
        IOUtils.replaceTextInFile(backupFilePath2, "<version>", version);
        IOUtils.replaceTextInFile(backupFilePath2, "<host>", logstashHost);

        String logstashJarPath =
            DeploymentUtils.getLocalRepository() + "net/logstash/1.2.2/logstash-1.2.2.jar";
        logstashLogPath2 = pathToLogstash + "/logstash-" + simpleClassName + "-2.txt";
        String cmdLine =
            "java -jar "
                + logstashJarPath
                + " agent -f "
                + backupFilePath2
                + " -l "
                + logstashLogPath2;

        final String[] parts = cmdLine.split(" ");
        final ProcessBuilder pb = new ProcessBuilder(parts);
        LogUtils.log("Executing Command line: " + cmdLine);

        process2 = pb.start();

      } catch (IOException e) {
        e.printStackTrace();
      }
    }
  }

  private void initLogstash(String testName) {

    initLogstashHost();

    String pathToLogstash =
        SGTestHelper.getSGTestRootDir().replace("\\", "/") + "/src/main/resources/logstash";
    String confFilePath = pathToLogstash + "/logstash-shipper-client.conf";
    String fixedTestName = testName.substring(0, testName.length() - 2);
    String backupFilePath = pathToLogstash + "/logstash-shipper-client-" + fixedTestName + ".conf";

    if (process == null) {

      try {

        LogUtils.log("copying file " + confFilePath + " to " + backupFilePath);
        IOUtils.copyFile(confFilePath, backupFilePath);
        //                backupFilePath = IOUtils.backupFile(confFilePath);
        IOUtils.replaceTextInFile(
            backupFilePath,
            "<path_to_test_folder>",
            SGTestHelper.getSGTestRootDir().replace("\\", "/")
                + "/../"
                + suiteName
                + "/"
                + testName);
        IOUtils.replaceTextInFile(backupFilePath, "<suite_name>", suiteName);
        IOUtils.replaceTextInFile(backupFilePath, "<test_name>", testName);
        IOUtils.replaceTextInFile(backupFilePath, "<build_number>", buildNumber);
        IOUtils.replaceTextInFile(backupFilePath, "<version>", version);
        IOUtils.replaceTextInFile(backupFilePath, "<host>", logstashHost);

        String logstashJarPath =
            DeploymentUtils.getLocalRepository() + "net/logstash/1.2.2/logstash-1.2.2.jar";
        logstashLogPath = pathToLogstash + "/logstash-" + fixedTestName + ".txt";
        String cmdLine =
            "java -jar "
                + logstashJarPath
                + " agent -f "
                + backupFilePath
                + " -l "
                + logstashLogPath;

        final String[] parts = cmdLine.split(" ");
        final ProcessBuilder pb = new ProcessBuilder(parts);
        LogUtils.log("Executing Command line: " + cmdLine);

        TimeUnit.SECONDS.sleep(1);
        process = pb.start();

      } catch (Exception e) {
        e.printStackTrace();
      }
    }
  }

  @Override
  public void beforeConfiguration(ITestResult tr) {
    if (enableLogstash) {
      super.beforeConfiguration(tr);
      if (suiteName
          == null) { // this is in case the suite has a @BeforeSuite method. which is invoked before
                     // the onStart is.
        suiteName = System.getProperty("iTests.suiteName", "sgtest");
        buildNumber = System.getProperty("iTests.buildNumber");
        LogUtils.log("build number is now - " + buildNumber);
        version = System.getProperty("cloudifyVersion");
      }
    }
  }

  @Override
  public void onConfigurationSuccess(ITestResult iTestResult) {
    super.onConfigurationSuccess(iTestResult);
    String testName = iTestResult.getTestClass().getName();
    String configurationName = iTestResult.getMethod().toString().split("\\(|\\)")[0];
    if (isAfter(iTestResult) && !enableLogstash) {
      DumpUtils.copyBeforeConfigurationsLogToTestDir(testName, suiteName);
      testName = testMethodName;
    }
    if (suiteName
        == null) { // this is in case the suite has a @BeforeSuite method. which is invoked before
                   // the onStart is.
      suiteName = System.getProperty("iTests.suiteName", "sgtest");
    }
    LogUtils.log("Configuration Succeeded: " + configurationName);

    if (enableLogstash && iTestResult.getMethod().isBeforeClassConfiguration()) {
      initLogstash2(iTestResult);
    }

    String newmanTestFolder = System.getProperty("newman.test.path");
    if (newmanTestFolder != null) {
      File testFolder = new File(newmanTestFolder);
      ZipUtils.unzipArchive(testFolder);
      try {
        copyAllFilesToLogDir(testFolder, testFolder);
      } catch (IOException e) {
        LogUtils.log("Failed to copy all log files - caught " + e, e);
      }
    } else {
      ZipUtils.unzipArchive(testMethodName, suiteName);
    }

    if (enableLogstash
        && isAfter(iTestResult)
        && !iTestResult.getMethod().isAfterClassConfiguration()
        && !iTestResult.getMethod().isAfterSuiteConfiguration()) {
      testName = testMethodName;
    }

    write2LogFile(iTestResult, DumpUtils.createTestFolder(testName, suiteName));

    if (isAfter(iTestResult)) {
      if (enableLogstash) {
        if (process != null) {
          killLogstashAgent(1, logstashLogPath);
        }
        if (process2 != null && iTestResult.getMethod().isAfterClassConfiguration()) {
          killLogstashAgent(2, logstashLogPath2);
        }
      }
    }
  }

  @Override
  public void onConfigurationFailure(ITestResult iTestResult) {
    super.onConfigurationFailure(iTestResult);
    String testName = iTestResult.getTestClass().getName();
    String configurationName = iTestResult.getMethod().toString().split("\\(|\\)")[0];
    if (!enableLogstash && isAfter(iTestResult)) {
      DumpUtils.copyBeforeConfigurationsLogToTestDir(testName, suiteName);
      testName = testMethodName;
    }
    if (suiteName
        == null) { // this is in case the suite has a @BeforeSuite method. which is invoked before
                   // the onStart is.
      suiteName = System.getProperty("iTests.suiteName", "sgtest");
    }
    LogUtils.log("Configuration Failed: " + configurationName, iTestResult.getThrowable());

    if (enableLogstash && iTestResult.getMethod().isBeforeClassConfiguration()) {
      initLogstash2(iTestResult);
    }

    String newmanTestFolder = System.getProperty("newman.test.path");
    if (newmanTestFolder != null) {
      File testFolder = new File(newmanTestFolder);
      ZipUtils.unzipArchive(testFolder);
      try {
        copyAllFilesToLogDir(testFolder, testFolder);
      } catch (IOException e) {
        LogUtils.log("Failed to copy all log files");
      }
    } else {
      ZipUtils.unzipArchive(testMethodName, suiteName);
    }

    if (enableLogstash
        && isAfter(iTestResult)
        && !iTestResult.getMethod().isAfterClassConfiguration()
        && !iTestResult.getMethod().isAfterSuiteConfiguration()) {
      testName = testMethodName;
    }
    File testFolder = DumpUtils.createTestFolder(testName, suiteName);
    write2LogFile(iTestResult, testFolder);
    write2ErrorTxtFile(iTestResult, testFolder);

    if (isAfter(iTestResult)) {
      if (enableLogstash) {
        if (process != null) {
          killLogstashAgent(1, logstashLogPath);
        }
        if (process2 != null && iTestResult.getMethod().isAfterClassConfiguration()) {
          killLogstashAgent(2, logstashLogPath2);
        }
      }
    }
  }

  @Override
  public void onConfigurationSkip(ITestResult iTestResult) {
    super.onConfigurationFailure(iTestResult);
    String testName = iTestResult.getTestClass().getName();
    String configurationName = iTestResult.getMethod().toString().split("\\(|\\)")[0];
    if (!enableLogstash && isAfter(iTestResult)) {
      DumpUtils.copyBeforeConfigurationsLogToTestDir(testName, suiteName);
      testName = testMethodName;
    }
    LogUtils.log("Configuration Skipped: " + configurationName, iTestResult.getThrowable());

    if (enableLogstash && iTestResult.getMethod().isBeforeClassConfiguration()) {
      initLogstash2(iTestResult);
    }

    String newmanTestFolder = System.getProperty("newman.test.path");
    if (newmanTestFolder != null) {
      File testFolder = new File(newmanTestFolder);
      ZipUtils.unzipArchive(testFolder);
      try {
        copyAllFilesToLogDir(testFolder, testFolder);
      } catch (IOException e) {
        LogUtils.log("Failed to copy all log files");
      }
    } else {
      ZipUtils.unzipArchive(testMethodName, suiteName);
    }

    if (enableLogstash
        && isAfter(iTestResult)
        && !iTestResult.getMethod().isAfterClassConfiguration()
        && !iTestResult.getMethod().isAfterSuiteConfiguration()) {
      testName = testMethodName;
    }
    write2LogFile(iTestResult, DumpUtils.createTestFolder(testName, suiteName));

    if (isAfter(iTestResult)) {
      if (enableLogstash) {
        if (process != null) {
          killLogstashAgent(1, logstashLogPath);
        }
        if (process2 != null && iTestResult.getMethod().isAfterClassConfiguration()) {
          killLogstashAgent(2, logstashLogPath2);
        }
      }
    }
  }

  @Override
  public void onTestStart(ITestResult iTestResult) {
    super.onTestStart(iTestResult);
    String testName = TestNGUtils.constructTestMethodName(iTestResult);
    LogUtils.log("Test Start: " + testName);
    if (enableLogstash) {
      initLogstash(testName);
    }
  }

  @Override
  public void onTestFailure(ITestResult iTestResult) {
    if (suiteName.toLowerCase().contains("webui")) {
      if (testInvocationCounter < maxCount) {
        testInvocationCounter++;
        iTestResult.setAttribute("retry", true);
      } else {
        LogUtils.log("Number of retries expired.");
        iTestResult.setStatus(ITestResult.FAILURE);
        // reset count
        testInvocationCounter = 1;
        testMethodName = TestNGUtils.constructTestMethodName(iTestResult);
        LogUtils.log("Test Failed: " + testMethodName, iTestResult.getThrowable());
        File testFolder = DumpUtils.createTestFolder(testMethodName, suiteName);
        write2LogFile(iTestResult, testFolder);
        write2ErrorTxtFile(iTestResult, testFolder);
      }
    } else {
      testMethodName = TestNGUtils.constructTestMethodName(iTestResult);
      LogUtils.log("Test Failed: " + testMethodName, iTestResult.getThrowable());
      File testFolder = DumpUtils.createTestFolder(testMethodName, suiteName);
      write2LogFile(iTestResult, testFolder);
      write2ErrorTxtFile(iTestResult, testFolder);
    }
    super.onTestFailure(iTestResult);
  }

  @Override
  public void onTestSkipped(ITestResult iTestResult) {
    super.onTestSkipped(iTestResult);
    testMethodName = TestNGUtils.constructTestMethodName(iTestResult);
    LogUtils.log("Test Skipped: " + testMethodName, iTestResult.getThrowable());
    write2LogFile(iTestResult, DumpUtils.createTestFolder(testMethodName, suiteName));
  }

  @Override
  public void onTestSuccess(ITestResult iTestResult) {
    super.onTestSuccess(iTestResult);
    if (suiteName.toLowerCase().contains("webui")) {
      testInvocationCounter = 1;
    }
    testMethodName = TestNGUtils.constructTestMethodName(iTestResult);
    LogUtils.log("Test Passed: " + testMethodName);
    write2LogFile(iTestResult, DumpUtils.createTestFolder(testMethodName, suiteName));
  }

  @Override
  public void onFinish(ITestContext testContext) {
    super.onFinish(testContext);
    if (suiteName == null) suiteName = System.getProperty("iTests.suiteName", "sgtest");
    LogUtils.log("Finishing Suite: " + suiteName.toLowerCase());
    if (suiteName.toLowerCase().contains("webui")) {
      onFinishWebUITests(testContext);
    }
    try {
      SGTestNGReporter.reset();
    } catch (Exception e) {
      // ignore
    }
  }

  private void onFinishWebUITests(ITestContext testContext) {
    // List of test results which we will delete later because of duplication or because the test
    // eventually passed
    List<ITestResult> testsToBeRemoved = new ArrayList<ITestResult>();

    // collect all id's from passed test
    Set<Integer> passedTestIds = new HashSet<Integer>();
    for (ITestResult passedTest : testContext.getPassedTests().getAllResults()) {
      passedTestIds.add(getTestId(passedTest));
    }

    Set<Integer> failedTestIds = new HashSet<Integer>();
    for (ITestResult failedTest : testContext.getFailedTests().getAllResults()) {

      int failedTestId = getTestId(failedTest);
      // if this test failed before mark as to be deleted
      // or delete this failed test if there is at least one passed version
      if (failedTestIds.contains(failedTestId) || passedTestIds.contains(failedTestId)) {
        testsToBeRemoved.add(failedTest);
      } else {
        failedTestIds.add(failedTestId);
      }
    }
    // finally delete all tests that are marked
    for (Iterator<ITestResult> iterator = testContext.getFailedTests().getAllResults().iterator();
        iterator.hasNext(); ) {
      ITestResult testResult = iterator.next();
      if (testsToBeRemoved.contains(testResult)) {
        iterator.remove();
      }
    }
  }

  // returns an ID for each test result
  private int getTestId(ITestResult result) {
    int id = result.getTestClass().getName().hashCode();
    id = 31 * id + result.getMethod().getMethodName().hashCode();
    id = 31 * id + (result.getParameters() != null ? Arrays.hashCode(result.getParameters()) : 0);
    return id;
  }

  private void write2LogFile(ITestResult iTestResult, File testFolder) {
    BufferedWriter out = null;
    try {
      if (testFolder == null) {
        LogUtils.log("Can not write to file test folder is null");
        return;
      }
      String output = SGTestNGReporter.getOutput();
      if (StringUtils.isEmpty(output)) {
        LogUtils.log("nothing to write to log file");
        return;
      }
      String parameters = TestNGUtils.extractParameters(iTestResult);
      File testLogFile =
          new File(
              testFolder.getAbsolutePath()
                  + "/"
                  + iTestResult.getName()
                  + "("
                  + parameters
                  + ").log");
      if (!testLogFile.createNewFile()) {
        LogUtils.log(
            "Failed to create log file ["
                + testLogFile
                + "];\n log output: "
                + Reporter.getOutput());
        return;
      }
      FileWriter fstream = new FileWriter(testLogFile);
      out = new BufferedWriter(fstream);
      out.write(output);
    } catch (Exception e) {
      LogUtils.log("Failed to write to log file result - " + iTestResult, e);
    } finally {
      SGTestNGReporter.reset();
      if (out != null) {
        try {
          out.close();
        } catch (IOException e) {
          LogUtils.log("Failed closing stream", e);
          // ignore
        }
      }
    }
  }

  private void write2ErrorTxtFile(ITestResult iTestResult, File testFolder) {
    if (testFolder == null) {
      LogUtils.log("Can not write error.txt - test folder is null");
      return;
    }
    //noinspection ThrowableResultOfMethodCallIgnored
    if (iTestResult.getThrowable() == null) {
      LogUtils.log("nothing to write to error.txt - throwable is null");
      return;
    }
    // trim if too long
    //noinspection ThrowableResultOfMethodCallIgnored
    String errorMsg = iTestResult.getThrowable().toString();
    if (errorMsg.length() > 120) {
      errorMsg = errorMsg.substring(0, 120 - 3) + "...";
    }

    File errorTxtFile = new File(testFolder.getAbsolutePath(), "error.txt");
    PrintWriter out = null;
    try {
      out = new PrintWriter(new BufferedWriter(new FileWriter(errorTxtFile, true)));
      out.println(errorMsg);
    } catch (IOException ioe) {
      LogUtils.log("Failed to write contents into error.txt file", ioe);
    } finally {
      if (out != null) {
        out.close();
      }
    }
  }

  private boolean isAfter(ITestResult iTestResult) {
    ITestNGMethod method = iTestResult.getMethod();
    return (method.isAfterClassConfiguration()
        || method.isAfterMethodConfiguration()
        || method.isAfterSuiteConfiguration()
        || method.isAfterTestConfiguration());
  }

  private void killLogstashAgent(int logAgentNumber, String logstashLogPath) {

    FileObject listendir;
    CustomFileListener listener = new CustomFileListener();
    long TIMEOUT_BETWEEN_FILE_QUERYING = 1000;
    long LOOP_TIMEOUT_IN_MILLIS = 10 * 1000;

    try {
      FileSystemManager fileSystemManager = VFS.getManager();
      listendir = fileSystemManager.resolveFile(logstashLogPath);
    } catch (FileSystemException e) {
      e.printStackTrace();
      return;
    }

    DefaultFileMonitor fm = new DefaultFileMonitor(listener);
    fm.setRecursive(true);
    fm.addFile(listendir);
    fm.setDelay(TIMEOUT_BETWEEN_FILE_QUERYING);
    fm.start();

    LogUtils.log("waiting to destroy logger");
    long startTimeMillis = System.currentTimeMillis();

    while (true) {

      if (!listener.isProcessUp()) {
        break;
      }

      listener.setProcessUp(false);

      try {
        TimeUnit.MILLISECONDS.sleep(LOOP_TIMEOUT_IN_MILLIS);
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
    }

    long endTimeMillis = System.currentTimeMillis();
    LogUtils.log("destroying logstash agent " + logAgentNumber);
    LogUtils.log("waited " + (endTimeMillis - startTimeMillis) / 1000 + " seconds");
    fm.stop();

    //        File logstashOutputFile = new File(logstashLogPath);

    if (logAgentNumber == 1) {

      process.destroy();
      process = null;
    } else {

      process2.destroy();
      process2 = null;
    }

    //        try {
    //            TimeUnit.SECONDS.sleep(5);
    //
    //            LogUtils.log("returning logstash config file to initial state");
    //            if(logAgentNumber == 1){
    //                IOUtils.replaceFileWithMove(new File(confFilePath), new File(backupFilePath));
    //                FileUtils.deleteQuietly(new File(backupFilePath));
    //            }
    //            else{
    //                IOUtils.replaceFileWithMove(new File(confFilePath2), new
    // File(backupFilePath2));
    //                FileUtils.deleteQuietly(new File(backupFilePath2));
    //
    //            }
    //        } catch (IOException e) {
    //            e.printStackTrace();
    //        } catch (InterruptedException e) {
    //            e.printStackTrace();
    //        }

    //        if(logstashOutputFile.exists()){
    //            FileUtils.deleteQuietly(logstashOutputFile);
    //        }
  }

  private void initLogstashHost() {

    if (logstashHost != null) {
      return;
    }

    Properties props;
    try {
      props = IOUtils.readPropertiesFromFile(propsFile);
    } catch (final Exception e) {
      throw new IllegalStateException("Failed reading properties file : " + e.getMessage());
    }
    logstashHost = props.getProperty("logstash_server_host");
  }

  private void copyAllFilesToLogDir(File node, File parent) throws IOException {
    if (!node.getAbsoluteFile().equals(parent.getAbsoluteFile())
        && node.isFile()
        && !node.getParentFile().equals(parent)) {
      String fileNamePrefix = node.getName().substring(0, node.getName().lastIndexOf('.'));
      String fileNameSuffix = node.getName().substring(node.getName().lastIndexOf('.'));
      String newFilePath =
          node.getParentFile().getAbsolutePath()
              + File.separator
              + fileNamePrefix.replace(".", "_")
              + fileNameSuffix;

      File newNode = new File(newFilePath);
      if (node.renameTo(newNode)) {
        FileUtils.copyFileToDirectory(newNode, parent);
      }
    }
    if (node.isDirectory()) {
      String[] subNote = node.list();
      for (String filename : subNote) {
        copyAllFilesToLogDir(new File(node, filename), parent);
      }
      if (!node.equals(parent)) {
        FileUtils.deleteDirectory(node);
      }
    }
  }
}