/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 async;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import jakarta.servlet.AsyncContext;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
public class Async0 extends HttpServlet {
private static final long serialVersionUID = 1L;
private static final Log log = LogFactory.getLog(Async0.class);
@Override
protected void service(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException, IOException {
if (Boolean.TRUE.equals(req.getAttribute("dispatch"))) {
log.info("Received dispatch, completing on the worker thread.");
log.info("After complete called started:"+req.isAsyncStarted());
Date date = new Date(System.currentTimeMillis());
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z");
resp.getWriter().write("Async dispatch worked: " + sdf.format(date) + " ");
} else {
resp.setContentType("text/plain");
final AsyncContext actx = req.startAsync();
actx.setTimeout(Long.MAX_VALUE);
Runnable run = new Runnable() {
@Override
public void run() {
try {
req.setAttribute("dispatch", Boolean.TRUE);
Thread.currentThread().setName("Async0-Thread");
log.info("Putting AsyncThread to sleep");
Thread.sleep(2*1000);
log.info("Dispatching");
actx.dispatch();
}catch (InterruptedException | IllegalStateException x) {
log.error("Async1",x);
}
}
};
Thread t = new Thread(run);
t.start();
}
}
}