JmsCronSchedulerTest.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.
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package org.apache.activemq.broker.scheduler;

import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import java.util.Date;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

import org.apache.activemq.ScheduledMessage;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

public class JmsCronSchedulerTest extends JobSchedulerTestSupport {

   private static final Logger LOG = LoggerFactory.getLogger(JmsCronSchedulerTest.class);

   @Test
   public void testSimulatenousCron() throws Exception {

      final int COUNT = 10;
      final AtomicInteger count = new AtomicInteger();
      Connection connection = createConnection();

      Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

      MessageConsumer consumer = session.createConsumer(destination);

      final CountDownLatch latch = new CountDownLatch(COUNT);
      consumer.setMessageListener(new MessageListener() {
         @Override
         public void onMessage(Message message) {
            count.incrementAndGet();
            latch.countDown();
            assertTrue(message instanceof TextMessage);
            TextMessage tm = (TextMessage) message;
            try {
               LOG.info("Received [{}] count: {} ", tm.getText(), count.get());
            } catch (JMSException e) {
               LOG.error("Unexpected exception in onMessage", e);
               fail("Unexpected exception in onMessage: " + e.getMessage());
            }
         }
      });

      connection.start();
      for (int i = 0; i < COUNT; i++) {
         MessageProducer producer = session.createProducer(destination);
         TextMessage message = session.createTextMessage("test msg " + i);
         message.setStringProperty(ScheduledMessage.AMQ_SCHEDULED_CRON, "* * * * *");
         producer.send(message);
         LOG.info("Message {} sent at {}", i, new Date().toString());
         producer.close();
         //wait a couple sec so cron start time is different for next message
         Thread.sleep(2000);
      }
      SchedulerBroker sb = (SchedulerBroker) this.broker.getBroker().getAdaptor(SchedulerBroker.class);
      JobScheduler js = sb.getJobScheduler();
      List<Job> list = js.getAllJobs();
      assertEquals(COUNT, list.size());
      latch.await(2, TimeUnit.MINUTES);
      //All should messages should have been received by now
      assertEquals(COUNT, count.get());
   }

   @Test
   public void testCronScheduleWithTtlSet() throws Exception {

      Connection connection = createConnection();
      Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
      MessageConsumer consumer = session.createConsumer(destination);
      connection.start();

      MessageProducer producer = session.createProducer(destination);
      producer.setTimeToLive(TimeUnit.MINUTES.toMillis(1));
      TextMessage message = session.createTextMessage("test msg ");
      message.setStringProperty(ScheduledMessage.AMQ_SCHEDULED_CRON, "* * * * *");

      producer.send(message);
      producer.close();

      Thread.sleep(TimeUnit.MINUTES.toMillis(2));

      assertNotNull(consumer.receiveNoWait());
      assertNull(consumer.receiveNoWait());
   }
}