ConcurrencyServlet.java

/**
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.apache.openejb.arquillian.managed;

import javax.annotation.Resource;
import javax.ejb.EJB;
import javax.enterprise.concurrent.ManagedExecutorService;
import javax.servlet.AsyncContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet(asyncSupported = true, value = "/async")
public class ConcurrencyServlet extends HttpServlet {
    @EJB
    private User user;

    @Resource
    private ManagedExecutorService execService;

    @Override
    protected void service(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException, IOException {
        final AsyncContext asyncCtx = req.startAsync();
        execService.execute(new Runnable() {
            @Override
            public void run() {
                try {
                    req.login("test", "secret");
                    resp.getWriter().println(user.getUser());
                } catch (final Exception e) {
                    try {
                        e.printStackTrace(resp.getWriter());
                    } catch (final IOException e1) {
                        throw new IllegalStateException(e);
                    }
                } finally {
                    asyncCtx.complete();
                }
            }
        });
    }
}