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.ambari.server.controller;
  
  import jakarta.inject.Inject;
  import jakarta.servlet.http.HttpServletRequest;
  import jakarta.servlet.http.HttpSession;
  
  import org.eclipse.jetty.server.session.SessionHandler;
  import org.springframework.web.context.request.RequestAttributes;
  import org.springframework.web.context.request.RequestContextHolder;
  import org.springframework.web.context.request.ServletRequestAttributes;
  
  /**
   * Class to expose current session information.
   */
  public class AmbariSessionManager {
  
    /**
     * Session manager.
     */
    @Inject
    SessionHandler sessionHandler;
  
  
    // ----- AmbariSessionManager ----------------------------------------------
  
    /**
     * Get the session id associated with the current thread-bound request.
     *
     * @return the current session id; null if no request is associated with the current thread
     */
    public String getCurrentSessionId() {
  
      HttpSession session = getHttpSession();
  
      return session == null ? null : session.getId();
    }
  
    /**
     * The session cookie id (i.e. AMBARISESSIONID).
     *
     * @return the session cookie
     */
    public String getSessionCookie() {
      return sessionHandler.getSessionCookieConfig().getName();
    }
  
    /**
     * Set an attribute value on the current session.
     *
     * @param name   the attribute name
     * @param value  the attribute value
     */
    public void setAttribute(String name, Object value) {
      HttpSession session = getHttpSession();
      if (session != null) {
        session.setAttribute(name, value);
      }
    }
  
    /**
     * Get an attribute value from the current session.
     *
     * @param name  the attribute name
     *
     * @return the attribute value
     */
    public Object getAttribute(String name) {
      HttpSession session = getHttpSession();
      if (session != null) {
        return session.getAttribute(name);
      }
      return null;
    }
  
    /**
     * Remove the attribute identified by the given name from the current session.
     *
     * @param name  the attribute name
     */
    public void removeAttribute(String name) {
      HttpSession session = getHttpSession();
      if (session != null) {
        session.removeAttribute(name);
      }
    }
  
  
    // ----- helper methods ----------------------------------------------------
  
    /**
     * Get the current session.
     *
     * @return the current session
     */
    protected HttpSession getHttpSession() {
  
      RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
  
      if (requestAttributes != null && requestAttributes instanceof ServletRequestAttributes) {
  
        HttpServletRequest request = ((ServletRequestAttributes) requestAttributes).getRequest();
  
        return request == null ? null : request.getSession(true);
      }
      return null;
    }
  }
  