/*
* Copyright 2002-2016 the original author or authors.
*
* 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.springframework.integration.jmx;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import java.util.concurrent.atomic.AtomicInteger;
import javax.management.MBeanServer;
import org.junit.Before;
import org.junit.Test;
import org.springframework.messaging.Message;
import org.springframework.jmx.support.MBeanServerFactoryBean;
import org.springframework.jmx.support.ObjectNameManager;
/**
* @author Mark Fisher
* @since 2.0
*/
public class AttributePollingMessageSourceTests {
private final TestCounter counter = new TestCounter();
private volatile MBeanServer server;
@Before
public void setup() throws Exception {
MBeanServerFactoryBean factoryBean = new MBeanServerFactoryBean();
factoryBean.setLocateExistingServerIfPossible(true);
factoryBean.afterPropertiesSet();
this.server = factoryBean.getObject();
this.server.registerMBean(this.counter, ObjectNameManager.getInstance("test:name=counter"));
}
@Test
public void basicPolling() {
AttributePollingMessageSource source = new AttributePollingMessageSource();
source.setAttributeName("Count");
source.setObjectName("test:name=counter");
source.setServer(this.server);
Message<?> message1 = source.receive();
assertNotNull(message1);
assertEquals(0, message1.getPayload());
this.counter.increment();
Message<?> message2 = source.receive();
assertNotNull(message2);
assertEquals(1, message2.getPayload());
}
public interface TestCounterMBean {
int getCount();
}
public static class TestCounter implements TestCounterMBean {
private final AtomicInteger counter = new AtomicInteger();
public int getCount() {
return this.counter.get();
}
public void increment() {
this.counter.incrementAndGet();
}
}
}