/*
 * 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.geode.modules.session.internal.common;

import javax.servlet.http.HttpSession;

import org.apache.geode.cache.GemFireCache;
import org.apache.geode.cache.Region;

/**
 * Interface to basic cache operations.
 */
public interface SessionCache {

  /**
   * Initialize the cache and create the appropriate region.
   */
  void initialize();

  /**
   * Stop the cache.
   */
  void stop();

  /**
   * Retrieve the cache reference.
   *
   * @return a {@code GemFireCache} reference
   */
  GemFireCache getCache();

  /**
   * Get the {@code Region} being used by client code to put attributes.
   *
   * @return a {@code Region<String, HttpSession>} reference
   */
  Region<String, HttpSession> getOperatingRegion();

  /**
   * Get the backing {@code Region} being used. This may not be the same as the region being used by
   * client code to put attributes.
   *
   * @return a {@code Region<String, HttpSession>} reference
   */
  Region<String, HttpSession> getSessionRegion();

  /**
   * Is this cache client-server? The only other alternative is peer-to-peer.
   *
   * @return true if this cache is client-server.
   */
  boolean isClientServer();
}
