* governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.service;

import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;

        if (crawlingInfoHelper != null) {
            final SimpleDateFormat dateFormat = new SimpleDateFormat(CoreLibConstants.DATE_FORMAT_ISO_8601_EXTEND);
            crawlingInfoHelper.putToInfoMap(key, dateFormat.format(new Date()));
        }
    }

    private void joinCrawlerThread(final Thread crawlerThread) {
        if (crawlerThread != null) {