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Spring Framework example source code file (AbstractJmxAssemblerTests.java)

This example Spring Framework source code file (AbstractJmxAssemblerTests.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

exception, exception, ijmxtestbean, incorrect, incorrect, integer, integer, management, mbeaninfo, modelmbeaninfo, modelmbeaninfo, notification, object, objectname, string

The Spring Framework AbstractJmxAssemblerTests.java source code

/*
 * Copyright 2002-2005 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.assembler;

import javax.management.Attribute;
import javax.management.Descriptor;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanInfo;
import javax.management.MBeanNotificationInfo;
import javax.management.MBeanOperationInfo;
import javax.management.ObjectInstance;
import javax.management.ObjectName;
import javax.management.modelmbean.ModelMBeanAttributeInfo;
import javax.management.modelmbean.ModelMBeanInfo;
import javax.management.modelmbean.ModelMBeanOperationInfo;

import org.springframework.jmx.AbstractJmxTests;
import org.springframework.jmx.IJmxTestBean;
import org.springframework.jmx.support.ObjectNameManager;

/**
 * @author Rob Harrop
 */
public abstract class AbstractJmxAssemblerTests extends AbstractJmxTests {

	protected static final String AGE_ATTRIBUTE = "Age";

	protected static final String NAME_ATTRIBUTE = "Name";

	protected abstract String getObjectName();

	public void testMBeanRegistration() throws Exception {
		// beans are registered at this point - just grab them from the server
		ObjectInstance instance = getObjectInstance();
		assertNotNull("Bean should not be null", instance);
	}

	public void testRegisterOperations() throws Exception {
		IJmxTestBean bean = getBean();
		MBeanInfo inf = getMBeanInfo();
		assertEquals("Incorrect number of operations registered",
				getExpectedOperationCount(), inf.getOperations().length);
	}

	public void testRegisterAttributes() throws Exception {
		IJmxTestBean bean = getBean();
		MBeanInfo inf = getMBeanInfo();
		assertEquals("Incorrect number of attributes registered",
				getExpectedAttributeCount(), inf.getAttributes().length);
	}

	public void testGetMBeanInfo() throws Exception {
		ModelMBeanInfo info = getMBeanInfoFromAssembler();
		assertNotNull("MBeanInfo should not be null", info);
	}

	public void testGetMBeanAttributeInfo() throws Exception {
		ModelMBeanInfo info = getMBeanInfoFromAssembler();
		MBeanAttributeInfo[] inf = info.getAttributes();
		assertEquals("Invalid number of Attributes returned",
				getExpectedAttributeCount(), inf.length);

		for (int x = 0; x < inf.length; x++) {
			assertNotNull("MBeanAttributeInfo should not be null", inf[x]);
			assertNotNull(
					"Description for MBeanAttributeInfo should not be null",
					inf[x].getDescription());
		}
	}

	public void testGetMBeanOperationInfo() throws Exception {
		ModelMBeanInfo info = getMBeanInfoFromAssembler();
		MBeanOperationInfo[] inf = info.getOperations();
		assertEquals("Invalid number of Operations returned",
				getExpectedOperationCount(), inf.length);

		for (int x = 0; x < inf.length; x++) {
			assertNotNull("MBeanOperationInfo should not be null", inf[x]);
			assertNotNull(
					"Description for MBeanOperationInfo should not be null",
					inf[x].getDescription());
		}
	}

	public void testDescriptionNotNull() throws Exception {
		ModelMBeanInfo info = getMBeanInfoFromAssembler();

		assertNotNull("The MBean description should not be null",
				info.getDescription());
	}

	public void testSetAttribute() throws Exception {
		ObjectName objectName = ObjectNameManager.getInstance(getObjectName());
		getServer().setAttribute(objectName, new Attribute(NAME_ATTRIBUTE, "Rob Harrop"));
		IJmxTestBean bean = (IJmxTestBean) getContext().getBean("testBean");
		assertEquals("Rob Harrop", bean.getName());
	}

	public void testGetAttribute() throws Exception {
		ObjectName objectName = ObjectNameManager.getInstance(getObjectName());
		getBean().setName("John Smith");
		Object val = getServer().getAttribute(objectName, NAME_ATTRIBUTE);
		assertEquals("Incorrect result", "John Smith", val);
	}

	public void testOperationInvocation() throws Exception{
		ObjectName objectName = ObjectNameManager.getInstance(getObjectName());
		Object result = getServer().invoke(objectName, "add",
				new Object[] {new Integer(20), new Integer(30)}, new String[] {"int", "int"});
	assertEquals("Incorrect result", new Integer(50), result);
	}

	public void testAttributeInfoHasDescriptors() throws Exception {
		ModelMBeanInfo info = getMBeanInfoFromAssembler();

		ModelMBeanAttributeInfo attr = info.getAttribute(NAME_ATTRIBUTE);
		Descriptor desc = attr.getDescriptor();
		assertNotNull("getMethod field should not be null",
				desc.getFieldValue("getMethod"));
		assertNotNull("setMethod field should not be null",
				desc.getFieldValue("setMethod"));
		assertEquals("getMethod field has incorrect value", "getName",
				desc.getFieldValue("getMethod"));
		assertEquals("setMethod field has incorrect value", "setName",
				desc.getFieldValue("setMethod"));
	}

	public void testAttributeHasCorrespondingOperations() throws Exception {
		ModelMBeanInfo info = getMBeanInfoFromAssembler();

		ModelMBeanOperationInfo get = info.getOperation("getName");
		assertNotNull("get operation should not be null", get);
		assertEquals("get operation should have visibility of four",
				(Integer) get.getDescriptor().getFieldValue("visibility"),
				new Integer(4));
		assertEquals("get operation should have role \"getter\"", "getter", get.getDescriptor().getFieldValue("role"));

		ModelMBeanOperationInfo set = info.getOperation("setName");
		assertNotNull("set operation should not be null", set);
		assertEquals("set operation should have visibility of four",
				(Integer) set.getDescriptor().getFieldValue("visibility"),
				new Integer(4));
		assertEquals("set operation should have role \"setter\"", "setter", set.getDescriptor().getFieldValue("role"));
	}

	public void testNotificationMetadata() throws Exception {
		ModelMBeanInfo info = (ModelMBeanInfo) getMBeanInfo();
		MBeanNotificationInfo[] notifications = info.getNotifications();
		assertEquals("Incorrect number of notifications", 1, notifications.length);
		assertEquals("Incorrect notification name", "My Notification", notifications[0].getName());

		String[] notifTypes = notifications[0].getNotifTypes();

		assertEquals("Incorrect number of notification types", 2, notifTypes.length);
		assertEquals("Notification type.foo not found", "type.foo", notifTypes[0]);
		assertEquals("Notification type.bar not found", "type.bar", notifTypes[1]);
	}

	protected ModelMBeanInfo getMBeanInfoFromAssembler() throws Exception {
		IJmxTestBean bean = getBean();
		ModelMBeanInfo info = getAssembler().getMBeanInfo(bean, getObjectName());
		return info;
	}

	protected IJmxTestBean getBean() {
		Object bean = getContext().getBean("testBean");
		return (IJmxTestBean) bean;
	}

	protected MBeanInfo getMBeanInfo() throws Exception {
		return getServer().getMBeanInfo(ObjectNameManager.getInstance(getObjectName()));
	}

	protected ObjectInstance getObjectInstance() throws Exception {
		return getServer().getObjectInstance(ObjectNameManager.getInstance(getObjectName()));
	}

	protected abstract int getExpectedOperationCount();

	protected abstract int getExpectedAttributeCount();

	protected abstract MBeanInfoAssembler getAssembler() throws Exception;

}

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