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/*
 * 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.catalina;

import java.util.Set;

/**
 * Interface implemented by session managers that do not keep a complete copy
 * of all sessions in memory but do know where every session is. The
 * BackupManager is an example of such a Manager as are implementations of the
 * StoreManager interface.
 * 

* With the BackupManager, sessions can be primary (master copy on this node), * backup (backup copy on this node) or proxy (only the session ID on this * node). The identity of the primary and backup nodes are known for all * sessions, including proxy sessions. *

* With StoreManager implementations, sessions can be primary (session is in * memory) or proxy (session is in the Store). */ public interface DistributedManager { /** * Returns the total session count for primary, backup and proxy. * * @return The total session count across the cluster. */ public int getActiveSessionsFull(); /** * Returns the list of all sessions IDS (primary, backup and proxy). * * @return The complete set of sessions IDs across the cluster. */ public Set getSessionIdsFull(); }





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