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* JBoss, Home of Professional Open Source.
* Copyright 2013, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.test.clustering.cluster.web.expiration;
import java.io.Serializable;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionBindingListener;
@WebServlet(urlPatterns = SessionOperationServlet.SERVLET_PATH)
public class SessionOperationServlet extends HttpServlet {
private static final long serialVersionUID = -1769104491085299700L;
private static final String SERVLET_NAME = "listener";
static final String SERVLET_PATH = "/" + SERVLET_NAME;
private static final String OPERATION = "operation";
private static final String INVALIDATE = "invalidate";
private static final String GET = "get";
private static final String SET = "set";
private static final String REMOVE = "remove";
private static final String TIMEOUT = "timeout";
private static final String NAME = "name";
private static final String VALUE = "value";
public static final String RESULT = "result";
public static final String SESSION_ID = "jsessionid";
public static final String CREATED_SESSIONS = "created";
public static final String DESTROYED_SESSIONS = "destroyed";
public static final String ADDED_ATTRIBUTES = "added";
public static final String REPLACED_ATTRIBUTES = "replaced";
public static final String REMOVED_ATTRIBUTES = "removed";
public static final String BOUND_ATTRIBUTES = "bound";
public static final String UNBOUND_ATTRIBUTES = "unbound";
public static URI createGetURI(URL baseURL, String name) throws URISyntaxException {
return createGetURI(baseURL, name, null);
}
public static URI createGetURI(URL baseURL, String name, String value) throws URISyntaxException {
StringBuilder builder = appendParameter(buildURI(GET), NAME, name);
if (value != null) {
appendParameter(builder, VALUE, value);
}
return baseURL.toURI().resolve(builder.toString());
}
public static URI createSetURI(URL baseURL, String name, String... values) throws URISyntaxException {
StringBuilder builder = appendParameter(buildURI(SET), NAME, name);
for (String value: values) {
appendParameter(builder, VALUE, value);
}
return baseURL.toURI().resolve(builder.toString());
}
public static URI createRemoveURI(URL baseURL, String name) throws URISyntaxException {
return baseURL.toURI().resolve(appendParameter(buildURI(REMOVE), NAME, name).toString());
}
public static URI createInvalidateURI(URL baseURL) throws URISyntaxException {
return baseURL.toURI().resolve(buildURI(INVALIDATE).toString());
}
public static URI createTimeoutURI(URL baseURL, int timeout) throws URISyntaxException {
return baseURL.toURI().resolve(appendParameter(buildURI(TIMEOUT), TIMEOUT, Integer.toString(timeout)).toString());
}
private static StringBuilder buildURI(String operation) {
return new StringBuilder(SERVLET_NAME).append('?').append(OPERATION).append('=').append(operation);
}
private static StringBuilder appendParameter(StringBuilder builder, String parameter, String value) {
return builder.append('&').append(parameter).append('=').append(value);
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException {
String operation = getRequiredParameter(req, OPERATION);
HttpSession session = req.getSession(true);
resp.addHeader(SESSION_ID, session.getId());
System.out.println(String.format("%s?%s;jsessionid=%s", req.getRequestURL(), req.getQueryString(), session.getId()));
if (operation.equals(SET)) {
String name = getRequiredParameter(req, NAME);
String[] values = req.getParameterValues(VALUE);
if (values != null) {
SessionAttributeValue value = new SessionAttributeValue(values[0]);
session.setAttribute(name, value);
for (int i = 1; i < values.length; ++i) {
value.setValue(values[i]);
}
} else {
session.setAttribute(name, null);
}
} else if (operation.equals(REMOVE)) {
String name = getRequiredParameter(req, NAME);
session.removeAttribute(name);
} else if (operation.equals(INVALIDATE)) {
session.invalidate();
} else if (operation.equals(GET)) {
String name = getRequiredParameter(req, NAME);
SessionAttributeValue value = (SessionAttributeValue) session.getAttribute(name);
if (value != null) {
resp.setHeader(RESULT, value.getValue());
String newValue = req.getParameter(VALUE);
if (newValue != null) {
value.setValue(newValue);
}
}
} else if (operation.equals(TIMEOUT)) {
String timeout = getRequiredParameter(req, TIMEOUT);
session.setMaxInactiveInterval(Integer.parseInt(timeout));
} else {
throw new ServletException("Unrecognized operation: " + operation);
}
setHeader(resp, CREATED_SESSIONS, RecordingWebListener.createdSessions);
setHeader(resp, DESTROYED_SESSIONS, RecordingWebListener.destroyedSessions);
setHeader(resp, ADDED_ATTRIBUTES, RecordingWebListener.addedAttributes.get(session.getId()));
setHeader(resp, REPLACED_ATTRIBUTES, RecordingWebListener.replacedAttributes.get(session.getId()));
setHeader(resp, REMOVED_ATTRIBUTES, RecordingWebListener.removedAttributes.get(session.getId()));
setHeader(resp, BOUND_ATTRIBUTES, SessionAttributeValue.boundAttributes);
setHeader(resp, UNBOUND_ATTRIBUTES, SessionAttributeValue.unboundAttributes);
}
private static void setHeader(HttpServletResponse response, String header, BlockingQueue<String> queue) {
if (queue != null) {
List<String> values = new LinkedList<>();
if (queue.drainTo(values) > 0) {
for (String value: values) {
response.addHeader(header, value);
}
}
}
}
private static String getRequiredParameter(HttpServletRequest req, String name) throws ServletException {
String value = req.getParameter(name);
if (value == null) {
throw new ServletException("Missing parameter: " + name);
}
return value;
}
public static class SessionAttributeValue implements Serializable, HttpSessionBindingListener {
private static final long serialVersionUID = -8824497321979784527L;
static final BlockingQueue<String> boundAttributes = new LinkedBlockingQueue<>();
static final BlockingQueue<String> unboundAttributes = new LinkedBlockingQueue<>();
private volatile String value;
public SessionAttributeValue(String value) {
this.value = value;
}
public String getValue() {
return this.value;
}
public void setValue(String value) {
this.value = value;
}
@Override
public void valueBound(HttpSessionBindingEvent event) {
boundAttributes.add(((SessionAttributeValue) event.getValue()).getValue());
}
@Override
public void valueUnbound(HttpSessionBindingEvent event) {
unboundAttributes.add(((SessionAttributeValue) event.getValue()).getValue());
}
}
}