/
LongRunningService.java
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/
LongRunningService.java
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/*
* JBoss, Home of Professional Open Source
* Copyright 2012, Red Hat, Inc. and/or its affiliates, and individual
* contributors by the @authors tag. See the copyright.txt in the
* distribution for a full listing of individual contributors.
*
* 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 org.jboss.as.quickstarts.servlet.async;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.Asynchronous;
import javax.ejb.Stateless;
import javax.servlet.AsyncContext;
/**
* A simple service to simulate the execution of a long running task.
*
* @author Christian Sadilek <csadilek@redhat.com>
*/
@Stateless
public class LongRunningService {
private final Logger logger = Logger.getLogger(LongRunningService.class.getName());
/**
* The use of {@link Asynchronous} causes this EJB method to be executed
* asynchronously, by a different thread from a dedicated, container managed
* thread pool.
*
* @param asyncContext
* the context for a suspended Servlet request that this EJB will
* complete later.
*/
@Asynchronous
public void readData(AsyncContext asyncContext) {
try {
// This is just to simulate a long running operation for demonstration purposes.
Thread.sleep(5000);
PrintWriter writer = asyncContext.getResponse().getWriter();
writer.println(new SimpleDateFormat("HH:mm:ss").format(new Date()));
writer.close();
asyncContext.complete();
} catch (Exception e) {
logger.log(Level.SEVERE, e.getMessage(), e);
}
}
}