| <?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en"><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/><link rel="stylesheet" href="../../jacoco-resources/report.css" type="text/css"/><link rel="shortcut icon" href="../../jacoco-resources/report.gif" type="image/gif"/><title>MemorySessionDAO.java</title><link rel="stylesheet" href="../../jacoco-resources/prettify.css" type="text/css"/><script type="text/javascript" src="../../jacoco-resources/prettify.js"></script></head><body onload="window['PR_TAB_WIDTH']=4;prettyPrint()"><div class="breadcrumb" id="breadcrumb"><span class="info"><a href="../../jacoco-sessions.html" class="el_session">Sessions</a></span><a href="../../index.html" class="el_report">Apache Shiro :: Test Coverage</a> > <a href="../index.html" class="el_bundle">shiro-core</a> > <a href="index.source.html" class="el_package">org.apache.shiro.session.mgt.eis</a> > <span class="el_source">MemorySessionDAO.java</span></div><h1>MemorySessionDAO.java</h1><pre class="source lang-java linenums">/* |
| * 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.shiro.session.mgt.eis; |
| |
| import org.apache.shiro.session.Session; |
| import org.apache.shiro.session.UnknownSessionException; |
| import org.apache.shiro.util.CollectionUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.Serializable; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| |
| |
| /** |
| * Simple memory-based implementation of the SessionDAO that stores all of its sessions in an in-memory |
| * {@link ConcurrentMap}. <b>This implementation does not page to disk and is therefore unsuitable for applications |
| * that could experience a large amount of sessions</b> and would therefore cause {@code OutOfMemoryException}s. It is |
| * <em>not</em> recommended for production use in most environments. |
| * <h2>Memory Restrictions</h2> |
| * If your application is expected to host many sessions beyond what can be stored in the |
| * memory available to the JVM, it is highly recommended to use a different {@code SessionDAO} implementation which |
| * uses a more expansive or permanent backing data store. |
| * <p/> |
| * In this case, it is recommended to instead use a custom |
| * {@link CachingSessionDAO} implementation that communicates with a higher-capacity data store of your choice |
| * (file system, database, etc). |
| * <h2>Changes in 1.0</h2> |
| * This implementation prior to 1.0 used to subclass the {@link CachingSessionDAO}, but this caused problems with many |
| * cache implementations that would expunge entries due to TTL settings, resulting in Sessions that would be randomly |
| * (and permanently) lost. The Shiro 1.0 release refactored this implementation to be 100% memory-based (without |
| * {@code Cache} usage to avoid this problem. |
| * |
| * @see CachingSessionDAO |
| * @since 0.1 |
| */ |
| public class MemorySessionDAO extends AbstractSessionDAO { |
| |
| <span class="fc" id="L58"> private static final Logger log = LoggerFactory.getLogger(MemorySessionDAO.class);</span> |
| |
| private ConcurrentMap<Serializable, Session> sessions; |
| |
| <span class="fc" id="L62"> public MemorySessionDAO() {</span> |
| <span class="fc" id="L63"> this.sessions = new ConcurrentHashMap<Serializable, Session>();</span> |
| <span class="fc" id="L64"> }</span> |
| |
| protected Serializable doCreate(Session session) { |
| <span class="fc" id="L67"> Serializable sessionId = generateSessionId(session);</span> |
| <span class="fc" id="L68"> assignSessionId(session, sessionId);</span> |
| <span class="fc" id="L69"> storeSession(sessionId, session);</span> |
| <span class="fc" id="L70"> return sessionId;</span> |
| } |
| |
| protected Session storeSession(Serializable id, Session session) { |
| <span class="pc bpc" id="L74" title="1 of 2 branches missed."> if (id == null) {</span> |
| <span class="nc" id="L75"> throw new NullPointerException("id argument cannot be null.");</span> |
| } |
| <span class="fc" id="L77"> return sessions.putIfAbsent(id, session);</span> |
| } |
| |
| protected Session doReadSession(Serializable sessionId) { |
| <span class="fc" id="L81"> return sessions.get(sessionId);</span> |
| } |
| |
| public void update(Session session) throws UnknownSessionException { |
| <span class="fc" id="L85"> storeSession(session.getId(), session);</span> |
| <span class="fc" id="L86"> }</span> |
| |
| public void delete(Session session) { |
| <span class="pc bpc" id="L89" title="1 of 2 branches missed."> if (session == null) {</span> |
| <span class="nc" id="L90"> throw new NullPointerException("session argument cannot be null.");</span> |
| } |
| <span class="fc" id="L92"> Serializable id = session.getId();</span> |
| <span class="pc bpc" id="L93" title="1 of 2 branches missed."> if (id != null) {</span> |
| <span class="fc" id="L94"> sessions.remove(id);</span> |
| } |
| <span class="fc" id="L96"> }</span> |
| |
| public Collection<Session> getActiveSessions() { |
| <span class="fc" id="L99"> Collection<Session> values = sessions.values();</span> |
| <span class="fc bfc" id="L100" title="All 2 branches covered."> if (CollectionUtils.isEmpty(values)) {</span> |
| <span class="fc" id="L101"> return Collections.emptySet();</span> |
| } else { |
| <span class="fc" id="L103"> return Collections.unmodifiableCollection(values);</span> |
| } |
| } |
| |
| } |
| </pre><div class="footer"><span class="right">Created with <a href="http://www.jacoco.org/jacoco">JaCoCo</a> 0.8.3.201901230119</span></div></body></html> |
