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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.shiro.session.mgt.eis;
20  
21  import org.apache.shiro.session.Session;
22  
23  import java.io.Serializable;
24  import java.util.UUID;
25  
26  /**
27   * {@link SessionIdGenerator} that generates String values of JDK {@link java.util.UUID}'s as the session IDs.
28   *
29   * @since 1.0
30   */
31  public class JavaUuidSessionIdGenerator implements SessionIdGenerator {
32  
33      /**
34       * Ignores the method argument and simply returns
35       * {@code UUID}.{@link java.util.UUID#randomUUID() randomUUID()}.{@code toString()}.
36       *
37       * @param session the {@link Session} instance to which the ID will be applied.
38       * @return the String value of the JDK's next {@link UUID#randomUUID() randomUUID()}.
39       */
40      public Serializable generateId(Session session) {
41          return UUID.randomUUID().toString();
42      }
43  }