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/*

 * 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 javax.servlet.AsyncContext;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.juli.logging.Log;

import org.apache.juli.logging.LogFactory;

public class Async2 extends HttpServlet {

    private static final long serialVersionUID = 1L;

    private static final Log log = LogFactory.getLog(Async2.class);

    @Override

    protected void service(HttpServletRequest req, HttpServletResponse resp)

            throws ServletException, IOException {

        final AsyncContext actx = req.startAsync();

        actx.setTimeout(30*1000);

        Runnable run = new Runnable() {

            @Override

            public void run() {

                try {

                    Thread.currentThread().setName("Async2-Thread");

                    log.info("Putting AsyncThread to sleep");

                    Thread.sleep(2*1000);

                    log.info("Writing data.");

                    Date date = new Date(System.currentTimeMillis());

                    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z");

                    actx.getResponse().getWriter().write(

                            "Output from background thread. Time: " + sdf.format(date) + "\n");

                    actx.complete();

                }catch (InterruptedException | IllegalStateException | IOException x) {

                    log.error("Async2",x);

                }

            }

        };

        Thread t = new Thread(run);

        t.start();

    }

}