/**
* 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.camel.management;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import junit.framework.TestCase;
import org.apache.camel.TimerListener;
import org.apache.camel.management.mbean.LoadTriplet;
import org.apache.camel.support.TimerListenerManager;
public class LoadTimerTest extends TestCase {
private static final int SAMPLES = 3;
public void testTimer() throws Exception {
ScheduledExecutorService executorService = Executors.newScheduledThreadPool(1);
TimerListenerManager myTimer = new TimerListenerManager();
myTimer.setExecutorService(executorService);
myTimer.start();
TestLoadAware test = new TestLoadAware();
myTimer.addTimerListener(test);
try {
Thread.sleep(1000 * (SAMPLES + 1));
assertTrue(test.counter >= SAMPLES);
assertFalse(Double.isNaN(test.load.getLoad1()));
assertTrue(test.load.getLoad1() > 0.0d);
assertTrue(test.load.getLoad1() < SAMPLES);
} finally {
myTimer.removeTimerListener(test);
}
myTimer.stop();
executorService.shutdown();
}
private class TestLoadAware implements TimerListener {
int counter;
LoadTriplet load = new LoadTriplet();
@Override
public void onTimer() {
counter++;
load.update(counter);
}
}
}