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 */
20 package org.apache.directory.server.ldap;
21
22
23 import java.util.Map;
24 import java.util.concurrent.ConcurrentHashMap;
25
26 import org.apache.mina.core.session.IoSession;
27
28
29 /**
30 * Manages sessions in a thread safe manner for the LdapServer. This class is
31 * used primarily by the {@link LdapProtocolHandler} to manage sessions and is
32 * created by the LdapServer which makes it available to the handler. It's job
33 * is simple and this class was mainly created to be able to expose the session
34 * manager safely to things like the LdapProtocolHandler.
35 *
36 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
37 */
38 public class LdapSessionManager
39 {
40 /** Concurrent hashMap backing for IoSession to LdapSession mapping */
41 private Map<IoSession, LdapSession> ldapSessions = new ConcurrentHashMap<IoSession, LdapSession>( 100 );
42
43
44 /**
45 * Gets the active sessions managed by the LdapServer.
46 */
47 public LdapSession[] getSessions()
48 {
49 return ldapSessions.values().toArray( new LdapSession[0] );
50 }
51
52
53 /**
54 * Adds a new LdapSession to the LdapServer.
55 *
56 * @param ldapSession the newly created {@link LdapSession}
57 */
58 public void addLdapSession( LdapSession ldapSession )
59 {
60 synchronized ( ldapSessions )
61 {
62 ldapSessions.put( ldapSession.getIoSession(), ldapSession );
63 }
64 }
65
66
67 /**
68 * Removes an LdapSession managed by the {@link LdapServer}. This method
69 * has no side effects: meaning it does not perform cleanup tasks after
70 * removing the session. This task is handled by the callers.
71 *
72 * @param session the MINA session of the LdapSession to be removed
73 * @return the LdapSession to remove
74 */
75 public LdapSession removeLdapSession( IoSession session )
76 {
77 synchronized ( ldapSessions )
78 {
79 return ldapSessions.remove( session );
80 }
81 }
82
83
84 /**
85 * Gets the LdapSession associated with the MINA session.
86 *
87 * @param session the MINA session of the LdapSession to retrieve
88 * @return the LdapSession associated with the MINA {@link IoSession}
89 */
90 public LdapSession getLdapSession( IoSession session )
91 {
92 synchronized ( ldapSessions )
93 {
94 return ldapSessions.get( session );
95 }
96 }
97 }