gistfile1.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
 *
 *     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.apache.openejb.timer;

import org.apache.openejb.jee.EnterpriseBean;
import org.apache.openejb.jee.SingletonBean;
import org.apache.openejb.junit.ApplicationComposer;
import org.apache.openejb.testing.Module;
import org.junit.Test;
import org.junit.runner.RunWith;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.annotation.Resource;
import javax.ejb.EJB;
import javax.ejb.EJBException;
import javax.ejb.Lock;
import javax.ejb.LockType;
import javax.ejb.ScheduleExpression;
import javax.ejb.Singleton;
import javax.ejb.Startup;
import javax.ejb.Timeout;
import javax.ejb.Timer;
import javax.ejb.TimerConfig;
import javax.ejb.TimerService;
import java.io.Serializable;

import static org.junit.Assert.assertEquals;

@RunWith(ApplicationComposer.class)
public class InitialIntervalTimerTest {
    @Module
    public EnterpriseBean bean() {
        return new SingletonBean(ScheduledBean.class).localBean();
    }

    @EJB
    private TimerWithDelay bean;

    @EJB
    private ScheduledBean bean2;

    @Test
    public void test() throws InterruptedException {
        bean2.schedule();
        Thread.sleep(100000);
        assertEquals(3, bean.getOk());
    }

    @Singleton
    @Startup
    @Lock(LockType.READ)
    public static class TimerWithDelay {
        @Resource
        private TimerService ts;

        private Timer timer;
        private int ok = 0;

        @PostConstruct
        public void start() {
            timer = ts.createIntervalTimer(3000, 1000, new TimerConfig(System.currentTimeMillis(), false));
        }

        @Timeout
        public void timeout(final Timer timer) {
            final long actual = System.currentTimeMillis() - ((Long) timer.getInfo() + 1000 * ok + 3000);
            assertEquals(0, actual, 500);
            ok++;
            System.out.println("==> Called " + ok);
        }

        public int getOk() {
            return ok;
        }

        @PreDestroy
        public void stop() {
            timer.cancel();
        }
    }

    @Singleton
    public static class ScheduledBean implements Serializable {
        private static final long serialVersionUID = 1L;

        @Resource
        private transient TimerService timerService;

        private Timer oldTimer = null;
        private int times = 0;

        public void schedule() {

            if (oldTimer != null) {
                oldTimer.cancel();
            }

            try {
                oldTimer = timerService.createCalendarTimer(new ScheduleExpression().second("*").minute("*").hour("*"), new TimerConfig("TIMER", true));
                System.out.println("==> Bean schedule done.");
            } catch (IllegalArgumentException e) {
                throw new EJBException(e);
            }
        }

        @Timeout
        @Lock(LockType.READ)
        private void timeout(Timer timer) {
            System.out.println("==> Called " + ++times);
        }

        @PreDestroy
        public void stop() {
            if (oldTimer != null) {
                oldTimer.cancel();
            }
        }
    }
}