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* 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.wildfly.clustering.web.undertow.session;
import io.undertow.UndertowMessages;
import io.undertow.server.HttpServerExchange;
import io.undertow.server.session.SessionConfig;
import io.undertow.server.session.SessionListener;
import io.undertow.server.session.SessionListeners;
import java.util.Collections;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import org.wildfly.clustering.ee.Batch;
import org.wildfly.clustering.web.session.ImmutableSession;
import org.wildfly.clustering.web.session.Session;
import org.wildfly.clustering.web.session.SessionManager;
/**
* Adapts a distributable {@link SessionManager} to an Undertow {@link io.undertow.server.session.SessionManager}.
* @author Paul Ferraro
*/
public class DistributableSessionManager implements UndertowSessionManager {
private static final int MAX_SESSION_ID_GENERATION_ATTEMPTS = 10;
private final String deploymentName;
private final SessionListeners sessionListeners = new SessionListeners();
private final SessionManager<LocalSessionContext, Batch> manager;
public DistributableSessionManager(String deploymentName, SessionManager<LocalSessionContext, Batch> manager) {
this.deploymentName = deploymentName;
this.manager = manager;
}
@Override
public SessionListeners getSessionListeners() {
return this.sessionListeners;
}
@Override
public SessionManager<LocalSessionContext, Batch> getSessionManager() {
return this.manager;
}
@Override
public void start() {
this.manager.start();
}
@Override
public void stop() {
this.manager.stop();
}
@Override
public io.undertow.server.session.Session createSession(HttpServerExchange exchange, SessionConfig config) {
if (config == null) {
throw UndertowMessages.MESSAGES.couldNotFindSessionCookieConfig();
}
String id = config.findSessionId(exchange);
if (id == null) {
int attempts = 0;
do {
if (++attempts > MAX_SESSION_ID_GENERATION_ATTEMPTS) {
throw UndertowMessages.MESSAGES.couldNotGenerateUniqueSessionId();
}
id = this.manager.createIdentifier();
} while (this.manager.containsSession(id));
config.setSessionId(exchange, id);
}
Batch batch = this.manager.getBatcher().createBatch();
try {
Session<LocalSessionContext> session = this.manager.createSession(id);
io.undertow.server.session.Session adapter = new DistributableSession(this, session, config, batch);
this.sessionListeners.sessionCreated(adapter, exchange);
return adapter;
} catch (RuntimeException | Error e) {
batch.discard();
throw e;
}
}
@Override
public io.undertow.server.session.Session getSession(HttpServerExchange exchange, SessionConfig config) {
String id = config.findSessionId(exchange);
if (id == null) return null;
Batch batch = this.manager.getBatcher().createBatch();
try {
Session<LocalSessionContext> session = this.manager.findSession(id);
if (session == null) {
batch.discard();
return null;
}
return new DistributableSession(this, session, config, batch);
} catch (RuntimeException | Error e) {
batch.discard();
throw e;
}
}
@Override
public void registerSessionListener(SessionListener listener) {
this.sessionListeners.addSessionListener(listener);
}
@Override
public void removeSessionListener(SessionListener listener) {
this.sessionListeners.removeSessionListener(listener);
}
@Override
public void setDefaultSessionTimeout(int timeout) {
this.manager.setDefaultMaxInactiveInterval(timeout, TimeUnit.SECONDS);
}
@Override
public Set<String> getTransientSessions() {
// We are a distributed session manager, so none of our sessions are transient
return Collections.emptySet();
}
@Override
public Set<String> getActiveSessions() {
return this.manager.getActiveSessions();
}
@Override
public Set<String> getAllSessions() {
return this.manager.getLocalSessions();
}
@Override
public io.undertow.server.session.Session getSession(String sessionId) {
Batch batch = this.manager.getBatcher().createBatch();
try {
ImmutableSession session = this.manager.viewSession(sessionId);
return (session != null) ? new DistributableImmutableSession(this, session) : null;
} finally {
batch.discard();
}
}
@Override
public String getDeploymentName() {
return this.deploymentName;
}
@Override
public boolean equals(Object object) {
if (!(object instanceof DistributableSessionManager)) return false;
DistributableSessionManager manager = (DistributableSessionManager) object;
return this.deploymentName.equals(manager.getDeploymentName());
}
@Override
public int hashCode() {
return this.deploymentName.hashCode();
}
@Override
public String toString() {
return this.deploymentName;
}
}