/**
* Copyright 2006 Webmedia Group Ltd.
*
* 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.
**/
package org.araneaframework.framework.filter;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
import java.io.FileWriter;
import java.io.PrintWriter;
import javax.servlet.http.HttpSession;
import org.apache.commons.lang.SerializationUtils;
import org.apache.log4j.Logger;
import org.araneaframework.InputData;
import org.araneaframework.Message;
import org.araneaframework.OutputData;
import org.araneaframework.Path;
import org.araneaframework.Relocatable;
import org.araneaframework.Service;
import org.araneaframework.core.BaseService;
import org.araneaframework.core.StandardRelocatableServiceDecorator;
/**
* Serializes the the session during the request routing. This
* filter helps to be aware of serializing issues during development. If the
* session does not serialize, exception is thrown.
* <br><br>
* The serialized session can be output to a file by setting the xml session path. The path
* must be valid & writable.
*
* @author "Toomas Römer" <toomas@webmedia.ee>
* @author Jevgeni Kabanov (ekabanov@webmedia.ee)
*/
public class StandardSerializingAuditFilterService extends BaseService {
private static final Logger log = Logger.getLogger(StandardSerializingAuditFilterService.class);
private Relocatable.RelocatableService child;
private String testXmlSessionPath;
/**
* Sets the path where to write the serialized class in xml format. The path must
* be valid and writeable.
* @param testXmlSessionPath
*/
public void setTestXmlSessionPath(String testXmlSessionPath) {
this.testXmlSessionPath = testXmlSessionPath;
}
public void setChildService(Service child) {
this.child = new StandardRelocatableServiceDecorator(child);
}
protected void init() throws Exception {
child._getComponent().init(getEnvironment());
log.debug("Serializing audit filter service initialized.");
}
protected void destroy() throws Exception {
child._getComponent().destroy();
log.debug("Serializing audit filter service destroyed.");
}
protected void propagate(Message message) throws Exception {
message.send(null, child);
}
protected void action(Path path, InputData input, OutputData output) throws Exception {
child._getRelocatable().overrideEnvironment(getEnvironment());
child._getService().action(path, input, output);
child._getRelocatable().overrideEnvironment(null);
HttpSession sess = (HttpSession) getEnvironment().getEntry(HttpSession.class);
byte[] serialized = SerializationUtils.serialize(child);
log.debug("Session size: " + serialized.length);
if (testXmlSessionPath != null) {
XStream xstream = new XStream(new DomDriver());
PrintWriter writer = new PrintWriter(new FileWriter(testXmlSessionPath + "/" + sess.getId() + ".xml"));
xstream.toXML(child, writer);
writer.close();
}
}
}