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serkanozal
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117 changes: 117 additions & 0 deletions
117
hazelcast-wm/src/main/java/com/hazelcast/web/spring/SpringAwareWebFilter.java
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| /* | ||
| * Copyright (c) 2008-2014, Hazelcast, Inc. All Rights Reserved. | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
|
|
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| package com.hazelcast.web.spring; | ||
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| import com.hazelcast.web.WebFilter; | ||
| import org.springframework.context.ApplicationContext; | ||
| import org.springframework.security.core.session.SessionRegistry; | ||
| import org.springframework.security.web.session.HttpSessionCreatedEvent; | ||
| import org.springframework.security.web.session.HttpSessionDestroyedEvent; | ||
| import org.springframework.web.context.support.WebApplicationContextUtils; | ||
|
|
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| import java.util.logging.Level; | ||
|
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| public class SpringAwareWebFilter extends WebFilter { | ||
|
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| protected volatile SessionRegistry sessionRegistry; | ||
|
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| protected void ensureSessionRegistryInitialized(ApplicationContext appContext) { | ||
| if (sessionRegistry == null) { | ||
| synchronized (this) { | ||
| if (sessionRegistry == null) { | ||
| sessionRegistry = appContext.getBean(SessionRegistry.class); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| @Override | ||
| protected HazelcastHttpSession createNewSession(RequestWrapper requestWrapper, | ||
| String existingSessionId) { | ||
| HazelcastHttpSession session = super.createNewSession(requestWrapper, existingSessionId); | ||
| ApplicationContext appContext = | ||
| WebApplicationContextUtils.getWebApplicationContext(servletContext); | ||
| if (appContext != null) { | ||
| ensureSessionRegistryInitialized(appContext); | ||
| if (sessionRegistry != null) { | ||
| String originalSessionId = session.getOriginalSessionId(); | ||
| // If original session id is registered already, we don't need it. | ||
| // So, we should remove it. | ||
| sessionRegistry.removeSessionInformation(originalSessionId); | ||
| // Publish event if this session is not registered | ||
| if (!isSessionRegistered(session.getId())) { | ||
| /** | ||
| * Publish an event to notify | ||
| * {@link org.springframework.security.core.session.SessionRegistry} instance. | ||
| * So Spring knows our Hazelcast session. | ||
| * | ||
| * If session is already exist | ||
| * ( | ||
| * possibly added by | ||
| * {@link org.springframework.security.web.session.HttpSessionEventPublisher} instance | ||
| * which is defined in {@code web.xml} before | ||
| * {@link com.hazelcast.web.SessionListener} to | ||
| * {@link org.springframework.security.core.session.SessionRegistry} | ||
| * ), | ||
| * it will be just updated. | ||
| */ | ||
| appContext.publishEvent(new HttpSessionCreatedEvent(session)); | ||
| if (LOGGER.isLoggable(Level.FINEST)) { | ||
| LOGGER.finest("Published create session event for Spring: " + session); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return session; | ||
| } | ||
|
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| @Override | ||
| protected void destroySession(HazelcastHttpSession session, boolean invalidate) { | ||
| super.destroySession(session, invalidate); | ||
| if (invalidate) { | ||
| ApplicationContext appContext = | ||
| WebApplicationContextUtils.getWebApplicationContext(servletContext); | ||
| if (appContext != null) { | ||
| ensureSessionRegistryInitialized(appContext); | ||
| if (sessionRegistry != null) { | ||
| String originalSessionId = session.getOriginalSessionId(); | ||
| // If original session id is registered already, we don't need it. | ||
| // So, we should remove it also. | ||
| sessionRegistry.removeSessionInformation(originalSessionId); | ||
| /** | ||
| * Publish an event to notify | ||
| * {@link org.springframework.security.core.session.SessionRegistry} instance. | ||
| * So Spring clears information about our Hazelcast session. | ||
| */ | ||
| appContext.publishEvent(new HttpSessionDestroyedEvent(session)); | ||
| if (LOGGER.isLoggable(Level.FINEST)) { | ||
| LOGGER.finest("Published destroy session event for Spring: " + session); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| private boolean isSessionRegistered(String sessionId) { | ||
| if (sessionRegistry != null) { | ||
| return sessionRegistry.getSessionInformation(sessionId) != null; | ||
| } else { | ||
| return false; | ||
| } | ||
| } | ||
|
|
||
| } |