| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html lang="en"> |
| <head> |
| <title>Source code</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body> |
| <div class="sourceContainer"> |
| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> */<a name="line.18"></a> |
| <span class="sourceLineNo">019</span>package org.apache.shiro.session.mgt.eis;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span><a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import org.apache.shiro.session.Session;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.shiro.session.UnknownSessionException;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.shiro.util.CollectionUtils;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.slf4j.Logger;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.slf4j.LoggerFactory;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span><a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.io.Serializable;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.Collection;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.Collections;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.concurrent.ConcurrentMap;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span><a name="line.33"></a> |
| <span class="sourceLineNo">034</span>/**<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * Simple memory-based implementation of the SessionDAO that stores all of its sessions in an in-memory<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * {@link ConcurrentMap}. <b>This implementation does not page to disk and is therefore unsuitable for applications<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * that could experience a large amount of sessions</b> and would therefore cause {@code OutOfMemoryException}s. It is<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * <em>not</em> recommended for production use in most environments.<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * <h2>Memory Restrictions</h2><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * If your application is expected to host many sessions beyond what can be stored in the<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * memory available to the JVM, it is highly recommended to use a different {@code SessionDAO} implementation which<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * uses a more expansive or permanent backing data store.<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * <p/><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * In this case, it is recommended to instead use a custom<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * {@link CachingSessionDAO} implementation that communicates with a higher-capacity data store of your choice<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * (file system, database, etc).<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * <h2>Changes in 1.0</h2><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * This implementation prior to 1.0 used to subclass the {@link CachingSessionDAO}, but this caused problems with many<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * cache implementations that would expunge entries due to TTL settings, resulting in Sessions that would be randomly<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * (and permanently) lost. The Shiro 1.0 release refactored this implementation to be 100% memory-based (without<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * {@code Cache} usage to avoid this problem.<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> *<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * @see CachingSessionDAO<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * @since 0.1<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> */<a name="line.55"></a> |
| <span class="sourceLineNo">056</span>public class MemorySessionDAO extends AbstractSessionDAO {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> private static final Logger log = LoggerFactory.getLogger(MemorySessionDAO.class);<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> private ConcurrentMap<Serializable, Session> sessions;<a name="line.60"></a> |
| <span class="sourceLineNo">061</span><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> public MemorySessionDAO() {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> this.sessions = new ConcurrentHashMap<Serializable, Session>();<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> }<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> protected Serializable doCreate(Session session) {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> Serializable sessionId = generateSessionId(session);<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> assignSessionId(session, sessionId);<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> storeSession(sessionId, session);<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> return sessionId;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> }<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> protected Session storeSession(Serializable id, Session session) {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> if (id == null) {<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> throw new NullPointerException("id argument cannot be null.");<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> }<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> return sessions.putIfAbsent(id, session);<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> }<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> protected Session doReadSession(Serializable sessionId) {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> return sessions.get(sessionId);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> }<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> public void update(Session session) throws UnknownSessionException {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> storeSession(session.getId(), session);<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> }<a name="line.86"></a> |
| <span class="sourceLineNo">087</span><a name="line.87"></a> |
| <span class="sourceLineNo">088</span> public void delete(Session session) {<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> if (session == null) {<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> throw new NullPointerException("session argument cannot be null.");<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> }<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> Serializable id = session.getId();<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> if (id != null) {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> sessions.remove(id);<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> }<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> }<a name="line.96"></a> |
| <span class="sourceLineNo">097</span><a name="line.97"></a> |
| <span class="sourceLineNo">098</span> public Collection<Session> getActiveSessions() {<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> Collection<Session> values = sessions.values();<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> if (CollectionUtils.isEmpty(values)) {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> return Collections.emptySet();<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> } else {<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> return Collections.unmodifiableCollection(values);<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> }<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> }<a name="line.105"></a> |
| <span class="sourceLineNo">106</span><a name="line.106"></a> |
| <span class="sourceLineNo">107</span>}<a name="line.107"></a> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </body> |
| </html> |