content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (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.apache.org/licenses/LICENSE-2.0
   *
   * 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.
   */
  
  package org.apache.dolphinscheduler.api.service.impl;
  
  import org.apache.dolphinscheduler.api.service.SessionService;
  import org.apache.dolphinscheduler.common.constants.Constants;
  import org.apache.dolphinscheduler.dao.entity.Session;
  import org.apache.dolphinscheduler.dao.entity.User;
  import org.apache.dolphinscheduler.dao.repository.SessionDao;
  
  import org.apache.commons.collections4.CollectionUtils;
  import org.apache.commons.lang3.StringUtils;
  
  import java.util.Date;
  import java.util.List;
  import java.util.UUID;
  
  import lombok.extern.slf4j.Slf4j;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  import org.springframework.transaction.annotation.Transactional;
  
  /**
   * session service implement
   */
  @Service
  @Slf4j
  public class SessionServiceImpl extends BaseServiceImpl implements SessionService {
  
      @Autowired
      private SessionDao sessionDao;
  
      @Override
      public Session getSession(String sessionId) {
          if (StringUtils.isBlank(sessionId)) {
              return null;
          }
          return sessionDao.queryById(sessionId);
      }
  
      @Override
      @Transactional
      public Session createSessionIfAbsent(User user) {
          Session session;
          List<Session> sessionList = sessionDao.queryByUserId(user.getId());
          // todo: this can be remove after the old session data is cleared
          if (CollectionUtils.isNotEmpty(sessionList)) {
              // is session list greater 1 ， delete other ，get one
              if (sessionList.size() > 1) {
                  for (int i = 1; i < sessionList.size(); i++) {
                      sessionDao.deleteById(sessionList.get(i).getId());
                  }
              }
              session = sessionList.get(0);
              if (isSessionExpire(session)) {
                  session.setLastLoginTime(new Date());
                  sessionDao.updateById(session);
                  return session;
              } else {
                  sessionDao.deleteById(session.getId());
              }
          }
  
          // assign new session
          Session newSession = Session.builder()
                  .id(UUID.randomUUID().toString())
                  .userId(user.getId())
                  .lastLoginTime(new Date())
                  .build();
          sessionDao.insert(newSession);
          return newSession;
      }
  
      @Override
      public void expireSession(Integer userId) {
          sessionDao.deleteByUserId(userId);
      }
  
      @Override
      public boolean isSessionExpire(Session session) {
          return System.currentTimeMillis() - session.getLastLoginTime().getTime() <= Constants.SESSION_TIME_OUT * 1000;
      }
  
  }
  