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Spring Framework example source code file (MBeanExporterOperationsTests.java)

This example Spring Framework source code file (MBeanExporterOperationsTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

bean, exception, incorrect, jmxtestbean, jmxtestbean, management, mbean, mbeanexporter, mbeanexporter, mbeanserver, objectname, objectname, requiredmodelmbean, string, string

The Spring Framework MBeanExporterOperationsTests.java source code

/*
 * Copyright 2002-2006 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.jmx.export;

import javax.management.InstanceAlreadyExistsException;
import javax.management.ObjectName;
import javax.management.MBeanInfo;
import javax.management.modelmbean.RequiredModelMBean;
import javax.management.modelmbean.ModelMBeanInfo;
import javax.management.modelmbean.ModelMBeanInfoSupport;

import org.springframework.jmx.AbstractMBeanServerTests;
import org.springframework.jmx.JmxTestBean;
import org.springframework.jmx.export.naming.ObjectNamingStrategy;
import org.springframework.jmx.support.ObjectNameManager;

/**
 * @author Rob Harrop
 * @author Juergen Hoeller
 */
public class MBeanExporterOperationsTests extends AbstractMBeanServerTests {

	public void testRegisterManagedResourceWithUserSuppliedObjectName() throws Exception {
		ObjectName objectName = ObjectNameManager.getInstance("spring:name=Foo");

		JmxTestBean bean = new JmxTestBean();
		bean.setName("Rob Harrop");

		MBeanExporter exporter = new MBeanExporter();
		exporter.setServer(getServer());
		exporter.registerManagedResource(bean, objectName);

		String name = (String) getServer().getAttribute(objectName, "Name");
		assertEquals("Incorrect name on MBean", name, bean.getName());
	}

	public void testRegisterExistingMBeanWithUserSuppliedObjectName() throws Exception {
		ObjectName objectName = ObjectNameManager.getInstance("spring:name=Foo");
		ModelMBeanInfo info = new ModelMBeanInfoSupport("myClass", "myDescription", null, null, null, null);
		RequiredModelMBean bean = new RequiredModelMBean(info);

		MBeanExporter exporter = new MBeanExporter();
		exporter.setServer(getServer());
		exporter.registerManagedResource(bean, objectName);

		MBeanInfo infoFromServer = getServer().getMBeanInfo(objectName);
		assertEquals(info, infoFromServer);
	}

	public void testRegisterManagedResourceWithGeneratedObjectName() throws Exception {
		final ObjectName objectNameTemplate = ObjectNameManager.getInstance("spring:type=Test");

		MBeanExporter exporter = new MBeanExporter();
		exporter.setServer(getServer());
		exporter.setNamingStrategy(new ObjectNamingStrategy() {
			public ObjectName getObjectName(Object managedBean, String beanKey) {
				return objectNameTemplate;
			}
		});

		JmxTestBean bean1 = new JmxTestBean();
		JmxTestBean bean2 = new JmxTestBean();

		ObjectName reg1 = exporter.registerManagedResource(bean1);
		ObjectName reg2 = exporter.registerManagedResource(bean2);

		assertIsRegistered("Bean 1 not registered with MBeanServer", reg1);
		assertIsRegistered("Bean 2 not registered with MBeanServer", reg2);

		assertObjectNameMatchesTemplate(objectNameTemplate, reg1);
		assertObjectNameMatchesTemplate(objectNameTemplate, reg2);
	}

	public void testRegisterManagedResourceWithGeneratedObjectNameWithoutUniqueness() throws Exception {
		final ObjectName objectNameTemplate = ObjectNameManager.getInstance("spring:type=Test");

		MBeanExporter exporter = new MBeanExporter();
		exporter.setServer(getServer());
		exporter.setEnsureUniqueRuntimeObjectNames(false);
		exporter.setNamingStrategy(new ObjectNamingStrategy() {
			public ObjectName getObjectName(Object managedBean, String beanKey) {
				return objectNameTemplate;
			}
		});

		JmxTestBean bean1 = new JmxTestBean();
		JmxTestBean bean2 = new JmxTestBean();

		ObjectName reg1 = exporter.registerManagedResource(bean1);
		assertIsRegistered("Bean 1 not registered with MBeanServer", reg1);

		try {
			exporter.registerManagedResource(bean2);
			fail("Shouldn't be able to register a runtime MBean with a reused ObjectName.");
		}
		catch (MBeanExportException e) {
			assertEquals("Incorrect root cause", InstanceAlreadyExistsException.class, e.getCause().getClass());
		}
	}

	private void assertObjectNameMatchesTemplate(ObjectName objectNameTemplate, ObjectName registeredName) {
		assertEquals("Domain is incorrect", objectNameTemplate.getDomain(), registeredName.getDomain());
	}

}

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