private File createCleanDir() throws IOException {
   String buildRoot = System.getProperty(TestCaseUtils.PROPERTY_BUILD_ROOT);
   String path =
       System.getProperty(TestCaseUtils.PROPERTY_BUILD_DIR, buildRoot + File.separator + "build");
   path = path + File.separator + "unit-tests" + File.separator + "JEReplicaDB";
   final File testRoot = new File(path);
   TestCaseUtils.deleteDirectory(testRoot);
   testRoot.mkdirs();
   return testRoot;
 }
  /** {@inheritDoc} */
  @Override()
  public LDIFImportResult importLDIF(LDIFImportConfig importConfig) throws DirectoryException {
    RuntimeInformation.logInfo();

    // If the backend already has the root container open, we must use the same
    // underlying root container
    boolean openRootContainer = rootContainer == null;

    // If the rootContainer is open, the backend is initialized by something
    // else.
    // We can't do import while the backend is online.
    if (!openRootContainer) {
      Message message = ERR_JEB_IMPORT_BACKEND_ONLINE.get();
      throw new DirectoryException(DirectoryServer.getServerErrorResultCode(), message);
    }

    try {
      EnvironmentConfig envConfig = new EnvironmentConfig();

      envConfig.setAllowCreate(true);
      envConfig.setTransactional(false);
      envConfig.setDurability(Durability.COMMIT_NO_SYNC);
      envConfig.setLockTimeout(0, TimeUnit.SECONDS);
      envConfig.setTxnTimeout(0, TimeUnit.SECONDS);
      envConfig.setConfigParam(
          EnvironmentConfig.CLEANER_MIN_FILE_UTILIZATION,
          String.valueOf(cfg.getDBCleanerMinUtilization()));
      envConfig.setConfigParam(
          EnvironmentConfig.LOG_FILE_MAX, String.valueOf(cfg.getDBLogFileMax()));

      if (!importConfig.appendToExistingData()) {
        if (importConfig.clearBackend() || cfg.getBaseDN().size() <= 1) {
          // We have the writer lock on the environment, now delete the
          // environment and re-open it. Only do this when we are
          // importing to all the base DNs in the backend or if the backend only
          // have one base DN.
          File parentDirectory = getFileForPath(cfg.getDBDirectory());
          File backendDirectory = new File(parentDirectory, cfg.getBackendId());
          // If the backend does not exist the import will create it.
          if (backendDirectory.exists()) {
            EnvManager.removeFiles(backendDirectory.getPath());
          }
        }
      }

      Importer importer = new Importer(importConfig, cfg, envConfig);
      rootContainer = initializeRootContainer(envConfig);
      return importer.processImport(rootContainer);
    } catch (ExecutionException execEx) {
      if (debugEnabled()) {
        TRACER.debugCaught(DebugLogLevel.ERROR, execEx);
      }
      if (execEx.getCause() instanceof DirectoryException) {
        throw ((DirectoryException) execEx.getCause());
      } else {
        Message message = ERR_EXECUTION_ERROR.get(execEx.getMessage());
        throw new DirectoryException(DirectoryServer.getServerErrorResultCode(), message);
      }
    } catch (InterruptedException intEx) {
      if (debugEnabled()) {
        TRACER.debugCaught(DebugLogLevel.ERROR, intEx);
      }
      Message message = ERR_INTERRUPTED_ERROR.get(intEx.getMessage());
      throw new DirectoryException(DirectoryServer.getServerErrorResultCode(), message);
    } catch (JebException je) {
      if (debugEnabled()) {
        TRACER.debugCaught(DebugLogLevel.ERROR, je);
      }
      throw new DirectoryException(
          DirectoryServer.getServerErrorResultCode(), je.getMessageObject());
    } catch (InitializationException ie) {
      if (debugEnabled()) {
        TRACER.debugCaught(DebugLogLevel.ERROR, ie);
      }
      throw new DirectoryException(
          DirectoryServer.getServerErrorResultCode(), ie.getMessageObject());
    } catch (ConfigException ce) {
      if (debugEnabled()) {
        TRACER.debugCaught(DebugLogLevel.ERROR, ce);
      }
      throw new DirectoryException(
          DirectoryServer.getServerErrorResultCode(), ce.getMessageObject());
    } finally {
      // leave the backend in the same state.
      try {
        if (rootContainer != null) {
          long startTime = System.currentTimeMillis();
          rootContainer.close();
          long finishTime = System.currentTimeMillis();
          long closeTime = (finishTime - startTime) / 1000;
          Message msg = NOTE_JEB_IMPORT_LDIF_ROOTCONTAINER_CLOSE.get(closeTime);
          logError(msg);
          rootContainer = null;
        }

        // Sync the environment to disk.
        if (debugEnabled()) {
          Message message = NOTE_JEB_IMPORT_CLOSING_DATABASE.get();
          TRACER.debugInfo(message.toString());
        }
      } catch (DatabaseException de) {
        if (debugEnabled()) {
          TRACER.debugCaught(DebugLogLevel.ERROR, de);
        }
      }
    }
  }
  private void testGetOldestNewestCSNs(final int max, final int counterWindow) throws Exception {
    String tn = "testDBCount(" + max + "," + counterWindow + ")";
    debugInfo(tn, "Starting test");

    File testRoot = null;
    ReplicationServer replicationServer = null;
    ReplicationDbEnv dbEnv = null;
    JEReplicaDB replicaDB = null;
    try {
      TestCaseUtils.startServer();
      replicationServer = configureReplicationServer(100000, 10);

      testRoot = createCleanDir();
      dbEnv = new ReplicationDbEnv(testRoot.getPath(), replicationServer);
      replicaDB = new JEReplicaDB(1, TEST_ROOT_DN, replicationServer, dbEnv);
      replicaDB.setCounterRecordWindowSize(counterWindow);

      // Populate the db with 'max' msg
      int mySeqnum = 1;
      CSN csns[] = new CSN[2 * (max + 1)];
      long now = System.currentTimeMillis();
      for (int i = 1; i <= max; i++) {
        csns[i] = new CSN(now + i, mySeqnum, 1);
        replicaDB.add(new DeleteMsg(TEST_ROOT_DN, csns[i], "uid"));
        mySeqnum += 2;
      }

      assertEquals(replicaDB.getOldestCSN(), csns[1], "Wrong oldest CSN");
      assertEquals(replicaDB.getNewestCSN(), csns[max], "Wrong newest CSN");

      // Now we want to test that after closing and reopening the db, the
      // counting algo is well reinitialized and when new messages are added
      // the new counter are correctly generated.
      debugInfo(tn, "SHUTDOWN replicaDB and recreate");
      replicaDB.shutdown();

      replicaDB = new JEReplicaDB(1, TEST_ROOT_DN, replicationServer, dbEnv);
      replicaDB.setCounterRecordWindowSize(counterWindow);

      assertEquals(replicaDB.getOldestCSN(), csns[1], "Wrong oldest CSN");
      assertEquals(replicaDB.getNewestCSN(), csns[max], "Wrong newest CSN");

      // Populate the db with 'max' msg
      for (int i = max + 1; i <= 2 * max; i++) {
        csns[i] = new CSN(now + i, mySeqnum, 1);
        replicaDB.add(new DeleteMsg(TEST_ROOT_DN, csns[i], "uid"));
        mySeqnum += 2;
      }

      assertEquals(replicaDB.getOldestCSN(), csns[1], "Wrong oldest CSN");
      assertEquals(replicaDB.getNewestCSN(), csns[2 * max], "Wrong newest CSN");

      replicaDB.purgeUpTo(new CSN(Long.MAX_VALUE, 0, 0));

      String testcase = "AFTER PURGE (oldest, newest)=";
      debugInfo(tn, testcase + replicaDB.getOldestCSN() + replicaDB.getNewestCSN());
      assertEquals(replicaDB.getNewestCSN(), csns[2 * max], "Newest=");

      // Clear ...
      debugInfo(tn, "clear:");
      replicaDB.clear();

      // Check the db is cleared.
      assertEquals(null, replicaDB.getOldestCSN());
      assertEquals(null, replicaDB.getNewestCSN());
      debugInfo(tn, "Success");
    } finally {
      shutdown(replicaDB);
      if (dbEnv != null) {
        dbEnv.shutdown();
      }
      remove(replicationServer);
      TestCaseUtils.deleteDirectory(testRoot);
    }
  }
  @DataProvider
  Object[][] cursorData() {
    // create 7 csns
    final CSN[] sevenCsns = generateCSNs(1, System.currentTimeMillis(), 7);
    CSN beforeCsn = sevenCsns[0];
    CSN middleCsn = sevenCsns[3]; // will be between csns[1] and csns[2]
    CSN afterCsn = sevenCsns[6];

    // but use only 4 of them for update msg
    // beforeCsn, middleCsn and afterCsn are not used
    // in order to test cursor generation from a key not present in the log (before, in the middle,
    // after)
    final List<CSN> usedCsns = new ArrayList<CSN>(Arrays.asList(sevenCsns));
    usedCsns.remove(beforeCsn);
    usedCsns.remove(middleCsn);
    usedCsns.remove(afterCsn);
    final CSN[] csns = usedCsns.toArray(new CSN[4]);

    return new Object[][] {
      // equal matching
      {csns, beforeCsn, EQUAL_TO_KEY, ON_MATCHING_KEY, -1, -1},
      {csns, csns[0], EQUAL_TO_KEY, ON_MATCHING_KEY, 0, 3},
      {csns, csns[1], EQUAL_TO_KEY, ON_MATCHING_KEY, 1, 3},
      {csns, middleCsn, EQUAL_TO_KEY, ON_MATCHING_KEY, -1, -1},
      {csns, csns[2], EQUAL_TO_KEY, ON_MATCHING_KEY, 2, 3},
      {csns, csns[3], EQUAL_TO_KEY, ON_MATCHING_KEY, 3, 3},
      {csns, afterCsn, EQUAL_TO_KEY, ON_MATCHING_KEY, -1, -1},
      {csns, beforeCsn, EQUAL_TO_KEY, AFTER_MATCHING_KEY, -1, -1},
      {csns, csns[0], EQUAL_TO_KEY, AFTER_MATCHING_KEY, 1, 3},
      {csns, csns[1], EQUAL_TO_KEY, AFTER_MATCHING_KEY, 2, 3},
      {csns, middleCsn, EQUAL_TO_KEY, AFTER_MATCHING_KEY, -1, -1},
      {csns, csns[2], EQUAL_TO_KEY, AFTER_MATCHING_KEY, 3, 3},
      {csns, csns[3], EQUAL_TO_KEY, AFTER_MATCHING_KEY, -1, -1},
      {csns, afterCsn, EQUAL_TO_KEY, AFTER_MATCHING_KEY, -1, -1},

      // less than or equal matching
      {csns, beforeCsn, LESS_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, -1, -1},
      {csns, csns[0], LESS_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 0, 3},
      {csns, csns[1], LESS_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 1, 3},
      {csns, middleCsn, LESS_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 1, 3},
      {csns, csns[2], LESS_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 2, 3},
      {csns, csns[3], LESS_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 3, 3},
      {csns, afterCsn, LESS_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 3, 3},
      {csns, beforeCsn, LESS_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, -1, -1},
      {csns, csns[0], LESS_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, 1, 3},
      {csns, csns[1], LESS_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, 2, 3},
      {csns, middleCsn, LESS_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, 2, 3},
      {csns, csns[2], LESS_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, 3, 3},
      {csns, csns[3], LESS_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, -1, -1},
      {csns, afterCsn, LESS_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, -1, -1},

      // greater than or equal matching
      {csns, beforeCsn, GREATER_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 0, 3},
      {csns, csns[0], GREATER_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 0, 3},
      {csns, csns[1], GREATER_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 1, 3},
      {csns, middleCsn, GREATER_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 2, 3},
      {csns, csns[2], GREATER_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 2, 3},
      {csns, csns[3], GREATER_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, 3, 3},
      {csns, afterCsn, GREATER_THAN_OR_EQUAL_TO_KEY, ON_MATCHING_KEY, -1, -1},
      {csns, beforeCsn, GREATER_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, 0, 3},
      {csns, csns[0], GREATER_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, 1, 3},
      {csns, csns[1], GREATER_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, 2, 3},
      {csns, middleCsn, GREATER_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, 2, 3},
      {csns, csns[2], GREATER_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, 3, 3},
      {csns, csns[3], GREATER_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, -1, -1},
      {csns, afterCsn, GREATER_THAN_OR_EQUAL_TO_KEY, AFTER_MATCHING_KEY, -1, -1},
      {null, null, null, null, -1, -1} // stop line
    };
  }