1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
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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   */
20  package org.apache.directory.server.kerberos.shared.replay;
21  
22  import java.util.Collection;
23  import java.util.Iterator;
24  import java.util.List;
25  import java.util.Map;
26  
27  import javax.security.auth.kerberos.KerberosPrincipal;
28  
29  import org.apache.directory.server.kerberos.shared.messages.value.KerberosTime;
30  import org.apache.directory.server.kerberos.shared.messages.value.types.PrincipalNameType;
31  import org.apache.directory.server.kerberos.shared.replay.InMemoryReplayCache.ReplayCacheEntry;
32  import org.junit.Test;
33  
34  import static org.junit.Assert.assertEquals;
35  import static org.junit.Assert.assertNotNull;
36  
37  /**
38   * Test the InMemory replay cache
39   * 
40   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
41   * @version $Rev: 542147 $, $Date: 2007-05-28 10:14:21 +0200 (Mon, 28 May 2007) $
42   */
43  public class InMemoryReplayCacheTest
44  {
45      /**
46       * Test that the cache is working well. We will create a new entry
47       * every 20 ms, with 10 different serverPrincipals.
48       * 
49       * After this period of time, we should only have 25 entries in the cache
50       */
51      @Test
52      public void testCacheSetting() throws Exception
53      {
54          int delay = 500;
55          long clockSkew = 100;
56          
57          // Set a delay of 500 ms and a clock skew of 100 ms
58          InMemoryReplayCache cache = new InMemoryReplayCache( clockSkew, delay );
59          
60          // Loop for 2 seconds, then check that the cache is clean
61          int i = 0;
62          int nbClient = 20;
63          int nbServer = 10;
64          
65          // Inject 100 entries, one every 20 ms
66          while ( i < 100 )
67          {
68              KerberosPrincipal serverPrincipal = new KerberosPrincipal( "server" + i%nbServer + "@APACHE.ORG", PrincipalNameType.KRB_NT_PRINCIPAL.getOrdinal() );
69              KerberosPrincipal clientPrincipal = new KerberosPrincipal( "client" + i%nbClient + "@APACHE.ORG", PrincipalNameType.KRB_NT_PRINCIPAL.getOrdinal() );
70              
71              cache.save( serverPrincipal, clientPrincipal, new KerberosTime( System.currentTimeMillis() ), 0 );
72              
73              Thread.sleep( 20 );
74              i++;
75          }
76          
77          Map<KerberosPrincipal, List<ReplayCacheEntry>> map = cache.getCache();
78  
79          // We should have 20 List of entries, as we have injected 20 different
80          // clientPrincipals
81          assertEquals( nbClient, map.size() );
82          
83          int nbEntries = 0;
84          
85          // Loop into the cache to see how many entries we have
86          Collection<List<ReplayCacheEntry>> entryList = map.values();
87          
88          for ( List<ReplayCacheEntry> entries:entryList )
89          {
90              if ( ( entries == null ) || ( entries.size() == 0 ) )
91              {
92                  continue;
93              }
94              
95              Iterator<ReplayCacheEntry> iterator = entries.iterator();
96              
97              while ( iterator.hasNext() )
98              {
99                  iterator.next();
100                 nbEntries ++;
101             }
102         }
103 
104         // We should have some
105         assertNotNull( nbEntries );
106         
107         // Wait another delay, so that the cleaning thread will be kicked off
108         Thread.sleep( delay + 50 );
109         
110         nbEntries = 0;
111         
112         for ( List<ReplayCacheEntry> entries:entryList )
113         {
114             if ( ( entries == null ) || ( entries.size() == 0 ) )
115             {
116                 continue;
117             }
118             
119             Iterator<ReplayCacheEntry> iterator = entries.iterator();
120             
121             while ( iterator.hasNext() )
122             {
123                 iterator.next();
124                 nbEntries ++;
125             }
126         }
127 
128         // We should not have anymore entry in the cache
129         assertEquals( 0, nbEntries );
130     }
131 }