org.springframework.jmx.support.JmxUtils Java Examples

/**
 * Connects to the remote {@code MBeanServer} using the configured {@code JMXServiceURL}:
 * to the specified JMX service, or to a local MBeanServer if no service URL specified.
 * @param serviceUrl the JMX service URL to connect to (may be {@code null})
 * @param environment the JMX environment for the connector (may be {@code null})
 * @param agentId the local JMX MBeanServer's agent id (may be {@code null})
 */
public MBeanServerConnection connect(JMXServiceURL serviceUrl, Map<String, ?> environment, String agentId)
		throws MBeanServerNotFoundException {

	if (serviceUrl != null) {
		if (logger.isDebugEnabled()) {
			logger.debug("Connecting to remote MBeanServer at URL [" + serviceUrl + "]");
		}
		try {
			this.connector = JMXConnectorFactory.connect(serviceUrl, environment);
			return this.connector.getMBeanServerConnection();
		}
		catch (IOException ex) {
			throw new MBeanServerNotFoundException("Could not connect to remote MBeanServer [" + serviceUrl + "]", ex);
		}
	}
	else {
		logger.debug("Attempting to locate local MBeanServer");
		return JmxUtils.locateMBeanServer(agentId);
	}
}
 

@Override
public ObjectName registerManagedResource(Object managedResource) throws MBeanExportException {
	Assert.notNull(managedResource, "Managed resource must not be null");
	ObjectName objectName;
	try {
		objectName = getObjectName(managedResource, null);
		if (this.ensureUniqueRuntimeObjectNames) {
			objectName = JmxUtils.appendIdentityToObjectName(objectName, managedResource);
		}
	}
	catch (Throwable ex) {
		throw new MBeanExportException("Unable to generate ObjectName for MBean [" + managedResource + "]", ex);
	}
	registerManagedResource(managedResource, objectName);
	return objectName;
}
 

/**
 * Connects to the remote {@code MBeanServer} using the configured {@code JMXServiceURL}:
 * to the specified JMX service, or to a local MBeanServer if no service URL specified.
 * @param serviceUrl the JMX service URL to connect to (may be {@code null})
 * @param environment the JMX environment for the connector (may be {@code null})
 * @param agentId the local JMX MBeanServer's agent id (may be {@code null})
 */
public MBeanServerConnection connect(JMXServiceURL serviceUrl, Map<String, ?> environment, String agentId)
		throws MBeanServerNotFoundException {

	if (serviceUrl != null) {
		if (logger.isDebugEnabled()) {
			logger.debug("Connecting to remote MBeanServer at URL [" + serviceUrl + "]");
		}
		try {
			this.connector = JMXConnectorFactory.connect(serviceUrl, environment);
			return this.connector.getMBeanServerConnection();
		}
		catch (IOException ex) {
			throw new MBeanServerNotFoundException("Could not connect to remote MBeanServer [" + serviceUrl + "]", ex);
		}
	}
	else {
		logger.debug("Attempting to locate local MBeanServer");
		return JmxUtils.locateMBeanServer(agentId);
	}
}
 

/**
 * Connects to the remote {@code MBeanServer} using the configured {@code JMXServiceURL}:
 * to the specified JMX service, or to a local MBeanServer if no service URL specified.
 * @param serviceUrl the JMX service URL to connect to (may be {@code null})
 * @param environment the JMX environment for the connector (may be {@code null})
 * @param agentId the local JMX MBeanServer's agent id (may be {@code null})
 */
public MBeanServerConnection connect(@Nullable JMXServiceURL serviceUrl, @Nullable Map<String, ?> environment, @Nullable String agentId)
		throws MBeanServerNotFoundException {

	if (serviceUrl != null) {
		if (logger.isDebugEnabled()) {
			logger.debug("Connecting to remote MBeanServer at URL [" + serviceUrl + "]");
		}
		try {
			this.connector = JMXConnectorFactory.connect(serviceUrl, environment);
			return this.connector.getMBeanServerConnection();
		}
		catch (IOException ex) {
			throw new MBeanServerNotFoundException("Could not connect to remote MBeanServer [" + serviceUrl + "]", ex);
		}
	}
	else {
		logger.debug("Attempting to locate local MBeanServer");
		return JmxUtils.locateMBeanServer(agentId);
	}
}
 

/**
 * Routes a method invocation (not a property get/set) to the corresponding
 * operation on the managed resource.
 * @param method the method corresponding to operation on the managed resource.
 * @param args the invocation arguments
 * @return the value returned by the method invocation.
 */
private Object invokeOperation(Method method, Object[] args) throws JMException, IOException {
	Assert.state(this.serverToUse != null, "No MBeanServerConnection available");

	MethodCacheKey key = new MethodCacheKey(method.getName(), method.getParameterTypes());
	MBeanOperationInfo info = this.allowedOperations.get(key);
	if (info == null) {
		throw new InvalidInvocationException("Operation '" + method.getName() +
				"' is not exposed on the management interface");
	}

	String[] signature;
	synchronized (this.signatureCache) {
		signature = this.signatureCache.get(method);
		if (signature == null) {
			signature = JmxUtils.getMethodSignature(method);
			this.signatureCache.put(method, signature);
		}
	}

	return this.serverToUse.invoke(this.objectName, method.getName(), args, signature);
}
 

@Override
public ObjectName registerManagedResource(Object managedResource) throws MBeanExportException {
	Assert.notNull(managedResource, "Managed resource must not be null");
	ObjectName objectName;
	try {
		objectName = getObjectName(managedResource, null);
		if (this.ensureUniqueRuntimeObjectNames) {
			objectName = JmxUtils.appendIdentityToObjectName(objectName, managedResource);
		}
	}
	catch (Throwable ex) {
		throw new MBeanExportException("Unable to generate ObjectName for MBean [" + managedResource + "]", ex);
	}
	registerManagedResource(managedResource, objectName);
	return objectName;
}
 

/**
 * Build an adapted MBean for the given bean instance, if possible.
 * <p>The default implementation builds a JMX 1.2 StandardMBean
 * for the target's MBean/MXBean interface in case of an AOP proxy,
 * delegating the interface's management operations to the proxy.
 * @param bean the original bean instance
 * @return the adapted MBean, or {@code null} if not possible
 */
@SuppressWarnings("unchecked")
protected DynamicMBean adaptMBeanIfPossible(Object bean) throws JMException {
	Class<?> targetClass = AopUtils.getTargetClass(bean);
	if (targetClass != bean.getClass()) {
		Class<?> ifc = JmxUtils.getMXBeanInterface(targetClass);
		if (ifc != null) {
			if (!ifc.isInstance(bean)) {
				throw new NotCompliantMBeanException("Managed bean [" + bean +
						"] has a target class with an MXBean interface but does not expose it in the proxy");
			}
			return new StandardMBean(bean, ((Class<Object>) ifc), true);
		}
		else {
			ifc = JmxUtils.getMBeanInterface(targetClass);
			if (ifc != null) {
				if (!ifc.isInstance(bean)) {
					throw new NotCompliantMBeanException("Managed bean [" + bean +
							"] has a target class with an MBean interface but does not expose it in the proxy");
				}
				return new StandardMBean(bean, ((Class<Object>) ifc));
			}
		}
	}
	return null;
}
 

/**
 * Routes a method invocation (not a property get/set) to the corresponding
 * operation on the managed resource.
 * @param method the method corresponding to operation on the managed resource.
 * @param args the invocation arguments
 * @return the value returned by the method invocation.
 */
private Object invokeOperation(Method method, Object[] args) throws JMException, IOException {
	MethodCacheKey key = new MethodCacheKey(method.getName(), method.getParameterTypes());
	MBeanOperationInfo info = this.allowedOperations.get(key);
	if (info == null) {
		throw new InvalidInvocationException("Operation '" + method.getName() +
				"' is not exposed on the management interface");
	}
	String[] signature = null;
	synchronized (this.signatureCache) {
		signature = this.signatureCache.get(method);
		if (signature == null) {
			signature = JmxUtils.getMethodSignature(method);
			this.signatureCache.put(method, signature);
		}
	}
	return this.serverToUse.invoke(this.objectName, method.getName(), args, signature);
}
 

/**
 * Routes a method invocation (not a property get/set) to the corresponding
 * operation on the managed resource.
 * @param method the method corresponding to operation on the managed resource.
 * @param args the invocation arguments
 * @return the value returned by the method invocation.
 */
private Object invokeOperation(Method method, Object[] args) throws JMException, IOException {
	MethodCacheKey key = new MethodCacheKey(method.getName(), method.getParameterTypes());
	MBeanOperationInfo info = this.allowedOperations.get(key);
	if (info == null) {
		throw new InvalidInvocationException("Operation '" + method.getName() +
				"' is not exposed on the management interface");
	}
	String[] signature = null;
	synchronized (this.signatureCache) {
		signature = this.signatureCache.get(method);
		if (signature == null) {
			signature = JmxUtils.getMethodSignature(method);
			this.signatureCache.put(method, signature);
		}
	}
	return this.serverToUse.invoke(this.objectName, method.getName(), args, signature);
}
 

@Override
public ObjectName registerManagedResource(Object managedResource) throws MBeanExportException {
	Assert.notNull(managedResource, "Managed resource must not be null");
	ObjectName objectName;
	try {
		objectName = getObjectName(managedResource, null);
		if (this.ensureUniqueRuntimeObjectNames) {
			objectName = JmxUtils.appendIdentityToObjectName(objectName, managedResource);
		}
	}
	catch (Exception ex) {
		throw new MBeanExportException("Unable to generate ObjectName for MBean [" + managedResource + "]", ex);
	}
	registerManagedResource(managedResource, objectName);
	return objectName;
}
 

/**
 * Build an adapted MBean for the given bean instance, if possible.
 * <p>The default implementation builds a JMX 1.2 StandardMBean
 * for the target's MBean/MXBean interface in case of an AOP proxy,
 * delegating the interface's management operations to the proxy.
 * @param bean the original bean instance
 * @return the adapted MBean, or {@code null} if not possible
 */
@SuppressWarnings("unchecked")
protected DynamicMBean adaptMBeanIfPossible(Object bean) throws JMException {
	Class<?> targetClass = AopUtils.getTargetClass(bean);
	if (targetClass != bean.getClass()) {
		Class<?> ifc = JmxUtils.getMXBeanInterface(targetClass);
		if (ifc != null) {
			if (!ifc.isInstance(bean)) {
				throw new NotCompliantMBeanException("Managed bean [" + bean +
						"] has a target class with an MXBean interface but does not expose it in the proxy");
			}
			return new StandardMBean(bean, ((Class<Object>) ifc), true);
		}
		else {
			ifc = JmxUtils.getMBeanInterface(targetClass);
			if (ifc != null) {
				if (!ifc.isInstance(bean)) {
					throw new NotCompliantMBeanException("Managed bean [" + bean +
							"] has a target class with an MBean interface but does not expose it in the proxy");
				}
				return new StandardMBean(bean, ((Class<Object>) ifc));
			}
		}
	}
	return null;
}
 

@Override
public ObjectName registerManagedResource(Object managedResource) throws MBeanExportException {
	Assert.notNull(managedResource, "Managed resource must not be null");
	ObjectName objectName;
	try {
		objectName = getObjectName(managedResource, null);
		if (this.ensureUniqueRuntimeObjectNames) {
			objectName = JmxUtils.appendIdentityToObjectName(objectName, managedResource);
		}
	}
	catch (Throwable ex) {
		throw new MBeanExportException("Unable to generate ObjectName for MBean [" + managedResource + "]", ex);
	}
	registerManagedResource(managedResource, objectName);
	return objectName;
}
 

/**
 * Connects to the remote {@code MBeanServer} using the configured {@code JMXServiceURL}:
 * to the specified JMX service, or to a local MBeanServer if no service URL specified.
 * @param serviceUrl the JMX service URL to connect to (may be {@code null})
 * @param environment the JMX environment for the connector (may be {@code null})
 * @param agentId the local JMX MBeanServer's agent id (may be {@code null})
 */
public MBeanServerConnection connect(@Nullable JMXServiceURL serviceUrl, @Nullable Map<String, ?> environment, @Nullable String agentId)
		throws MBeanServerNotFoundException {

	if (serviceUrl != null) {
		if (logger.isDebugEnabled()) {
			logger.debug("Connecting to remote MBeanServer at URL [" + serviceUrl + "]");
		}
		try {
			this.connector = JMXConnectorFactory.connect(serviceUrl, environment);
			return this.connector.getMBeanServerConnection();
		}
		catch (IOException ex) {
			throw new MBeanServerNotFoundException("Could not connect to remote MBeanServer [" + serviceUrl + "]", ex);
		}
	}
	else {
		logger.debug("Attempting to locate local MBeanServer");
		return JmxUtils.locateMBeanServer(agentId);
	}
}
 

/**
 * Routes a method invocation (not a property get/set) to the corresponding
 * operation on the managed resource.
 * @param method the method corresponding to operation on the managed resource.
 * @param args the invocation arguments
 * @return the value returned by the method invocation.
 */
private Object invokeOperation(Method method, Object[] args) throws JMException, IOException {
	Assert.state(this.serverToUse != null, "No MBeanServerConnection available");

	MethodCacheKey key = new MethodCacheKey(method.getName(), method.getParameterTypes());
	MBeanOperationInfo info = this.allowedOperations.get(key);
	if (info == null) {
		throw new InvalidInvocationException("Operation '" + method.getName() +
				"' is not exposed on the management interface");
	}

	String[] signature;
	synchronized (this.signatureCache) {
		signature = this.signatureCache.get(method);
		if (signature == null) {
			signature = JmxUtils.getMethodSignature(method);
			this.signatureCache.put(method, signature);
		}
	}

	return this.serverToUse.invoke(this.objectName, method.getName(), args, signature);
}
 

@Test
public void testBuilder() throws Exception {
    final MBeanServer mBeanServer = JmxUtils.locateMBeanServer();
    final Set<ObjectInstance> mBeans = mBeanServer.queryMBeans(ObjectName.getInstance("io.syndesis.camel:*"), null);
    assertThat(mBeans).hasSize(1);

    final ObjectName objectName = mBeans.iterator().next().getObjectName();
    final AttributeList attributes = mBeanServer.getAttributes(objectName, ATTRIBUTES);
    assertThat(attributes.asList()).hasSize(ATTRIBUTES.length);
}
 

private Object invokeAttribute(PropertyDescriptor pd, MethodInvocation invocation)
		throws JMException, IOException {

	String attributeName = JmxUtils.getAttributeName(pd, this.useStrictCasing);
	MBeanAttributeInfo inf = this.allowedAttributes.get(attributeName);
	// If no attribute is returned, we know that it is not defined in the
	// management interface.
	if (inf == null) {
		throw new InvalidInvocationException(
				"Attribute '" + pd.getName() + "' is not exposed on the management interface");
	}
	if (invocation.getMethod().equals(pd.getReadMethod())) {
		if (inf.isReadable()) {
			return this.serverToUse.getAttribute(this.objectName, attributeName);
		}
		else {
			throw new InvalidInvocationException("Attribute '" + attributeName + "' is not readable");
		}
	}
	else if (invocation.getMethod().equals(pd.getWriteMethod())) {
		if (inf.isWritable()) {
			this.serverToUse.setAttribute(this.objectName, new Attribute(attributeName, invocation.getArguments()[0]));
			return null;
		}
		else {
			throw new InvalidInvocationException("Attribute '" + attributeName + "' is not writable");
		}
	}
	else {
		throw new IllegalStateException(
				"Method [" + invocation.getMethod() + "] is neither a bean property getter nor a setter");
	}
}
 

@Nonnull
private Class findJmxInterface(String beanKey, Class<?> beanClass) {
    Class cachedInterface = interfaceCache.get(beanKey);
    if (cachedInterface != null) {
        return cachedInterface;
    }

    Class mbeanInterface = JmxUtils.getMBeanInterface(beanClass);
    if (mbeanInterface != null) { // found with MBean ending
        interfaceCache.put(beanKey, mbeanInterface);
        return mbeanInterface;
    }

    Class[] ifaces = ClassUtils.getAllInterfacesForClass(beanClass);

    for (Class ifc : ifaces) {
        ManagedResource metadata = attributeSource.getManagedResource(ifc);
        if (metadata != null) { // found with @ManagedResource annotation
            interfaceCache.put(beanKey, ifc);
            return ifc;
        }
    }

    throw new IllegalArgumentException(String.format(
            "Bean %s doesn't implement management interfaces. Management interface should either follow naming scheme or be annotated by @ManagedResource",
            beanKey));
}
 

@Override
public void afterPropertiesSet() {
	// If no server was provided then try to find one. This is useful in an environment
	// where there is already an MBeanServer loaded.
	if (this.server == null) {
		this.server = JmxUtils.locateMBeanServer();
	}
}
 

private Object invokeAttribute(PropertyDescriptor pd, MethodInvocation invocation)
		throws JMException, IOException {

	String attributeName = JmxUtils.getAttributeName(pd, this.useStrictCasing);
	MBeanAttributeInfo inf = this.allowedAttributes.get(attributeName);
	// If no attribute is returned, we know that it is not defined in the
	// management interface.
	if (inf == null) {
		throw new InvalidInvocationException(
				"Attribute '" + pd.getName() + "' is not exposed on the management interface");
	}
	if (invocation.getMethod().equals(pd.getReadMethod())) {
		if (inf.isReadable()) {
			return this.serverToUse.getAttribute(this.objectName, attributeName);
		}
		else {
			throw new InvalidInvocationException("Attribute '" + attributeName + "' is not readable");
		}
	}
	else if (invocation.getMethod().equals(pd.getWriteMethod())) {
		if (inf.isWritable()) {
			this.serverToUse.setAttribute(this.objectName, new Attribute(attributeName, invocation.getArguments()[0]));
			return null;
		}
		else {
			throw new InvalidInvocationException("Attribute '" + attributeName + "' is not writable");
		}
	}
	else {
		throw new IllegalStateException(
				"Method [" + invocation.getMethod() + "] is neither a bean property getter nor a setter");
	}
}
 

@Override
public void afterPropertiesSet() {
	// If no server was provided then try to find one. This is useful in an environment
	// where there is already an MBeanServer loaded.
	if (this.server == null) {
		this.server = JmxUtils.locateMBeanServer();
	}
}
 

@Nullable
private Object invokeAttribute(PropertyDescriptor pd, MethodInvocation invocation)
		throws JMException, IOException {

	Assert.state(this.serverToUse != null, "No MBeanServerConnection available");

	String attributeName = JmxUtils.getAttributeName(pd, this.useStrictCasing);
	MBeanAttributeInfo inf = this.allowedAttributes.get(attributeName);
	// If no attribute is returned, we know that it is not defined in the
	// management interface.
	if (inf == null) {
		throw new InvalidInvocationException(
				"Attribute '" + pd.getName() + "' is not exposed on the management interface");
	}

	if (invocation.getMethod().equals(pd.getReadMethod())) {
		if (inf.isReadable()) {
			return this.serverToUse.getAttribute(this.objectName, attributeName);
		}
		else {
			throw new InvalidInvocationException("Attribute '" + attributeName + "' is not readable");
		}
	}
	else if (invocation.getMethod().equals(pd.getWriteMethod())) {
		if (inf.isWritable()) {
			this.serverToUse.setAttribute(this.objectName, new Attribute(attributeName, invocation.getArguments()[0]));
			return null;
		}
		else {
			throw new InvalidInvocationException("Attribute '" + attributeName + "' is not writable");
		}
	}
	else {
		throw new IllegalStateException(
				"Method [" + invocation.getMethod() + "] is neither a bean property getter nor a setter");
	}
}
 

@Override
public void afterPropertiesSet() {
	// If no server was provided then try to find one. This is useful in an environment
	// where there is already an MBeanServer loaded.
	if (this.server == null) {
		this.server = JmxUtils.locateMBeanServer();
	}
}
 

/**
 * Build an adapted MBean for the given bean instance, if possible.
 * <p>The default implementation builds a JMX 1.2 StandardMBean
 * for the target's MBean/MXBean interface in case of an AOP proxy,
 * delegating the interface's management operations to the proxy.
 * @param bean the original bean instance
 * @return the adapted MBean, or {@code null} if not possible
 */
@SuppressWarnings("unchecked")
@Nullable
protected DynamicMBean adaptMBeanIfPossible(Object bean) throws JMException {
	Class<?> targetClass = AopUtils.getTargetClass(bean);
	if (targetClass != bean.getClass()) {
		Class<?> ifc = JmxUtils.getMXBeanInterface(targetClass);
		if (ifc != null) {
			if (!ifc.isInstance(bean)) {
				throw new NotCompliantMBeanException("Managed bean [" + bean +
						"] has a target class with an MXBean interface but does not expose it in the proxy");
			}
			return new StandardMBean(bean, ((Class<Object>) ifc), true);
		}
		else {
			ifc = JmxUtils.getMBeanInterface(targetClass);
			if (ifc != null) {
				if (!ifc.isInstance(bean)) {
					throw new NotCompliantMBeanException("Managed bean [" + bean +
							"] has a target class with an MBean interface but does not expose it in the proxy");
				}
				return new StandardMBean(bean, ((Class<Object>) ifc));
			}
		}
	}
	return null;
}
 

/**
 * Build an adapted MBean for the given bean instance, if possible.
 * <p>The default implementation builds a JMX 1.2 StandardMBean
 * for the target's MBean/MXBean interface in case of an AOP proxy,
 * delegating the interface's management operations to the proxy.
 * @param bean the original bean instance
 * @return the adapted MBean, or {@code null} if not possible
 */
@SuppressWarnings("unchecked")
@Nullable
protected DynamicMBean adaptMBeanIfPossible(Object bean) throws JMException {
	Class<?> targetClass = AopUtils.getTargetClass(bean);
	if (targetClass != bean.getClass()) {
		Class<?> ifc = JmxUtils.getMXBeanInterface(targetClass);
		if (ifc != null) {
			if (!ifc.isInstance(bean)) {
				throw new NotCompliantMBeanException("Managed bean [" + bean +
						"] has a target class with an MXBean interface but does not expose it in the proxy");
			}
			return new StandardMBean(bean, ((Class<Object>) ifc), true);
		}
		else {
			ifc = JmxUtils.getMBeanInterface(targetClass);
			if (ifc != null) {
				if (!ifc.isInstance(bean)) {
					throw new NotCompliantMBeanException("Managed bean [" + bean +
							"] has a target class with an MBean interface but does not expose it in the proxy");
				}
				return new StandardMBean(bean, ((Class<Object>) ifc));
			}
		}
	}
	return null;
}
 

@Override
public void afterPropertiesSet() {
	// If no server was provided then try to find one. This is useful in an environment
	// where there is already an MBeanServer loaded.
	if (this.server == null) {
		this.server = JmxUtils.locateMBeanServer();
	}
}
 

@Nullable
private Object invokeAttribute(PropertyDescriptor pd, MethodInvocation invocation)
		throws JMException, IOException {

	Assert.state(this.serverToUse != null, "No MBeanServerConnection available");

	String attributeName = JmxUtils.getAttributeName(pd, this.useStrictCasing);
	MBeanAttributeInfo inf = this.allowedAttributes.get(attributeName);
	// If no attribute is returned, we know that it is not defined in the
	// management interface.
	if (inf == null) {
		throw new InvalidInvocationException(
				"Attribute '" + pd.getName() + "' is not exposed on the management interface");
	}

	if (invocation.getMethod().equals(pd.getReadMethod())) {
		if (inf.isReadable()) {
			return this.serverToUse.getAttribute(this.objectName, attributeName);
		}
		else {
			throw new InvalidInvocationException("Attribute '" + attributeName + "' is not readable");
		}
	}
	else if (invocation.getMethod().equals(pd.getWriteMethod())) {
		if (inf.isWritable()) {
			this.serverToUse.setAttribute(this.objectName, new Attribute(attributeName, invocation.getArguments()[0]));
			return null;
		}
		else {
			throw new InvalidInvocationException("Attribute '" + attributeName + "' is not writable");
		}
	}
	else {
		throw new IllegalStateException(
				"Method [" + invocation.getMethod() + "] is neither a bean property getter nor a setter");
	}
}
 

/**
 * Iterate through all properties on the MBean class and gives subclasses
 * the chance to vote on the inclusion of both the accessor and mutator.
 * If a particular accessor or mutator is voted for inclusion, the appropriate
 * metadata is assembled and passed to the subclass for descriptor population.
 * @param managedBean the bean instance (might be an AOP proxy)
 * @param beanKey the key associated with the MBean in the beans map
 * of the {@code MBeanExporter}
 * @return the attribute metadata
 * @throws JMException in case of errors
 * @see #populateAttributeDescriptor
 */
@Override
protected ModelMBeanAttributeInfo[] getAttributeInfo(Object managedBean, String beanKey) throws JMException {
	PropertyDescriptor[] props = BeanUtils.getPropertyDescriptors(getClassToExpose(managedBean));
	List<ModelMBeanAttributeInfo> infos = new ArrayList<ModelMBeanAttributeInfo>();

	for (PropertyDescriptor prop : props) {
		Method getter = prop.getReadMethod();
		if (getter != null && getter.getDeclaringClass() == Object.class) {
			continue;
		}
		if (getter != null && !includeReadAttribute(getter, beanKey)) {
			getter = null;
		}

		Method setter = prop.getWriteMethod();
		if (setter != null && !includeWriteAttribute(setter, beanKey)) {
			setter = null;
		}

		if (getter != null || setter != null) {
			// If both getter and setter are null, then this does not need exposing.
			String attrName = JmxUtils.getAttributeName(prop, isUseStrictCasing());
			String description = getAttributeDescription(prop, beanKey);
			ModelMBeanAttributeInfo info = new ModelMBeanAttributeInfo(attrName, description, getter, setter);

			Descriptor desc = info.getDescriptor();
			if (getter != null) {
				desc.setField(FIELD_GET_METHOD, getter.getName());
			}
			if (setter != null) {
				desc.setField(FIELD_SET_METHOD, setter.getName());
			}

			populateAttributeDescriptor(desc, getter, setter, beanKey);
			info.setDescriptor(desc);
			infos.add(info);
		}
	}

	return infos.toArray(new ModelMBeanAttributeInfo[infos.size()]);
}
 

@Test
public void annotatedMXBean() throws Exception {
	assertTrue("MXBean annotation not detected correctly", JmxUtils.isMBean(FooX.class));
}
 

@Test
public void notMXBean() throws Exception {
	assertFalse("MXBean annotation not detected correctly", JmxUtils.isMBean(FooNotX.class));
}
 

/**
 * Iterate through all properties on the MBean class and gives subclasses
 * the chance to vote on the inclusion of both the accessor and mutator.
 * If a particular accessor or mutator is voted for inclusion, the appropriate
 * metadata is assembled and passed to the subclass for descriptor population.
 * @param managedBean the bean instance (might be an AOP proxy)
 * @param beanKey the key associated with the MBean in the beans map
 * of the {@code MBeanExporter}
 * @return the attribute metadata
 * @throws JMException in case of errors
 * @see #populateAttributeDescriptor
 */
@Override
protected ModelMBeanAttributeInfo[] getAttributeInfo(Object managedBean, String beanKey) throws JMException {
	PropertyDescriptor[] props = BeanUtils.getPropertyDescriptors(getClassToExpose(managedBean));
	List<ModelMBeanAttributeInfo> infos = new ArrayList<ModelMBeanAttributeInfo>();

	for (PropertyDescriptor prop : props) {
		Method getter = prop.getReadMethod();
		if (getter != null && getter.getDeclaringClass() == Object.class) {
			continue;
		}
		if (getter != null && !includeReadAttribute(getter, beanKey)) {
			getter = null;
		}

		Method setter = prop.getWriteMethod();
		if (setter != null && !includeWriteAttribute(setter, beanKey)) {
			setter = null;
		}

		if (getter != null || setter != null) {
			// If both getter and setter are null, then this does not need exposing.
			String attrName = JmxUtils.getAttributeName(prop, isUseStrictCasing());
			String description = getAttributeDescription(prop, beanKey);
			ModelMBeanAttributeInfo info = new ModelMBeanAttributeInfo(attrName, description, getter, setter);

			Descriptor desc = info.getDescriptor();
			if (getter != null) {
				desc.setField(FIELD_GET_METHOD, getter.getName());
			}
			if (setter != null) {
				desc.setField(FIELD_SET_METHOD, setter.getName());
			}

			populateAttributeDescriptor(desc, getter, setter, beanKey);
			info.setDescriptor(desc);
			infos.add(info);
		}
	}

	return infos.toArray(new ModelMBeanAttributeInfo[infos.size()]);
}