io.undertow.server.session.SessionAttachmentHandler Maven / Gradle / Ivy
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* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 io.undertow.server.session;
import io.undertow.Handlers;
import io.undertow.UndertowMessages;
import io.undertow.server.ExchangeCompletionListener;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpServerExchange;
import io.undertow.server.handlers.ResponseCodeHandler;
/**
* Handler that attaches the session to the request.
*
* This handler is also the place where session cookie configuration properties are configured.
*
* note: this approach is not used by Servlet, which has its own session handlers
*
* @author Stuart Douglas
*/
public class SessionAttachmentHandler implements HttpHandler {
private volatile HttpHandler next = ResponseCodeHandler.HANDLE_404;
private volatile SessionManager sessionManager;
private final SessionConfig sessionConfig;
public SessionAttachmentHandler(final SessionManager sessionManager, final SessionConfig sessionConfig) {
this.sessionConfig = sessionConfig;
if (sessionManager == null) {
throw UndertowMessages.MESSAGES.sessionManagerMustNotBeNull();
}
this.sessionManager = sessionManager;
}
public SessionAttachmentHandler(final HttpHandler next, final SessionManager sessionManager, final SessionConfig sessionConfig) {
this.sessionConfig = sessionConfig;
if (sessionManager == null) {
throw UndertowMessages.MESSAGES.sessionManagerMustNotBeNull();
}
this.next = next;
this.sessionManager = sessionManager;
}
@Override
public void handleRequest(final HttpServerExchange exchange) throws Exception {
exchange.putAttachment(SessionManager.ATTACHMENT_KEY, sessionManager);
exchange.putAttachment(SessionConfig.ATTACHMENT_KEY, sessionConfig);
final UpdateLastAccessTimeListener handler = new UpdateLastAccessTimeListener(sessionConfig, sessionManager);
exchange.addExchangeCompleteListener(handler);
next.handleRequest(exchange);
}
public HttpHandler getNext() {
return next;
}
public SessionAttachmentHandler setNext(final HttpHandler next) {
Handlers.handlerNotNull(next);
this.next = next;
return this;
}
public SessionManager getSessionManager() {
return sessionManager;
}
public SessionAttachmentHandler setSessionManager(final SessionManager sessionManager) {
if (sessionManager == null) {
throw UndertowMessages.MESSAGES.sessionManagerMustNotBeNull();
}
this.sessionManager = sessionManager;
return this;
}
private static class UpdateLastAccessTimeListener implements ExchangeCompletionListener {
private final SessionConfig sessionConfig;
private final SessionManager sessionManager;
private UpdateLastAccessTimeListener(final SessionConfig sessionConfig, final SessionManager sessionManager) {
this.sessionConfig = sessionConfig;
this.sessionManager = sessionManager;
}
@Override
public void exchangeEvent(final HttpServerExchange exchange, final NextListener next) {
try {
final Session session = sessionManager.getSession(exchange, sessionConfig);
if (session != null) {
session.requestDone(exchange);
}
} finally {
next.proceed();
}
}
}
}