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/*
* Copyright 2002-2014 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 java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.management.DynamicMBean;
import javax.management.JMException;
import javax.management.MBeanException;
import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.NotCompliantMBeanException;
import javax.management.NotificationListener;
import javax.management.ObjectName;
import javax.management.StandardMBean;
import javax.management.modelmbean.ModelMBean;
import javax.management.modelmbean.ModelMBeanInfo;
import javax.management.modelmbean.RequiredModelMBean;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.scope.ScopedProxyUtils;
import org.springframework.aop.support.AopUtils;
import org.springframework.aop.target.LazyInitTargetSource;
import org.springframework.beans.factory.BeanClassLoaderAware;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.CannotLoadBeanClassException;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.beans.factory.SmartInitializingSingleton;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.core.Constants;
import org.springframework.jmx.export.assembler.AutodetectCapableMBeanInfoAssembler;
import org.springframework.jmx.export.assembler.MBeanInfoAssembler;
import org.springframework.jmx.export.assembler.SimpleReflectiveMBeanInfoAssembler;
import org.springframework.jmx.export.naming.KeyNamingStrategy;
import org.springframework.jmx.export.naming.ObjectNamingStrategy;
import org.springframework.jmx.export.naming.SelfNaming;
import org.springframework.jmx.export.notification.ModelMBeanNotificationPublisher;
import org.springframework.jmx.export.notification.NotificationPublisherAware;
import org.springframework.jmx.support.JmxUtils;
import org.springframework.jmx.support.MBeanRegistrationSupport;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
import org.springframework.util.CollectionUtils;
import org.springframework.util.ObjectUtils;
/**
* JMX exporter that allows for exposing any Spring-managed bean to a
* JMX {@link javax.management.MBeanServer}, without the need to define any
* JMX-specific information in the bean classes.
*
* If a bean implements one of the JMX management interfaces, MBeanExporter can
* simply register the MBean with the server through its autodetection process.
*
*
If a bean does not implement one of the JMX management interfaces, MBeanExporter
* will create the management information using the supplied {@link MBeanInfoAssembler}.
*
*
A list of {@link MBeanExporterListener MBeanExporterListeners} can be registered
* via the {@link #setListeners(MBeanExporterListener[]) listeners} property, allowing
* application code to be notified of MBean registration and unregistration events.
*
*
This exporter is compatible with MBeans and MXBeans on Java 6 and above.
*
* @author Rob Harrop
* @author Juergen Hoeller
* @author Rick Evans
* @author Mark Fisher
* @author Stephane Nicoll
* @since 1.2
* @see #setBeans
* @see #setAutodetect
* @see #setAssembler
* @see #setListeners
* @see org.springframework.jmx.export.assembler.MBeanInfoAssembler
* @see MBeanExporterListener
*/
public class MBeanExporter extends MBeanRegistrationSupport implements MBeanExportOperations,
BeanClassLoaderAware, BeanFactoryAware, InitializingBean, SmartInitializingSingleton, DisposableBean {
/**
* Autodetection mode indicating that no autodetection should be used.
*/
public static final int AUTODETECT_NONE = 0;
/**
* Autodetection mode indicating that only valid MBeans should be autodetected.
*/
public static final int AUTODETECT_MBEAN = 1;
/**
* Autodetection mode indicating that only the {@link MBeanInfoAssembler} should be able
* to autodetect beans.
*/
public static final int AUTODETECT_ASSEMBLER = 2;
/**
* Autodetection mode indicating that all autodetection mechanisms should be used.
*/
public static final int AUTODETECT_ALL = AUTODETECT_MBEAN | AUTODETECT_ASSEMBLER;
/**
* Wildcard used to map a {@link javax.management.NotificationListener}
* to all MBeans registered by the {@code MBeanExporter}.
*/
private static final String WILDCARD = "*";
/** Constant for the JMX {@code mr_type} "ObjectReference" */
private static final String MR_TYPE_OBJECT_REFERENCE = "ObjectReference";
/** Prefix for the autodetect constants defined in this class */
private static final String CONSTANT_PREFIX_AUTODETECT = "AUTODETECT_";
/** Constants instance for this class */
private static final Constants constants = new Constants(MBeanExporter.class);
/** The beans to be exposed as JMX managed resources, with JMX names as keys */
private Map beans;
/** The autodetect mode to use for this MBeanExporter */
private Integer autodetectMode;
/** Whether to eagerly initialize candidate beans when autodetecting MBeans */
private boolean allowEagerInit = false;
/** Stores the MBeanInfoAssembler to use for this exporter */
private MBeanInfoAssembler assembler = new SimpleReflectiveMBeanInfoAssembler();
/** The strategy to use for creating ObjectNames for an object */
private ObjectNamingStrategy namingStrategy = new KeyNamingStrategy();
/** Indicates whether Spring should modify generated ObjectNames */
private boolean ensureUniqueRuntimeObjectNames = true;
/** Indicates whether Spring should expose the managed resource ClassLoader in the MBean */
private boolean exposeManagedResourceClassLoader = true;
/** A set of bean names that should be excluded from autodetection */
private Set excludedBeans = new HashSet();
/** The MBeanExporterListeners registered with this exporter. */
private MBeanExporterListener[] listeners;
/** The NotificationListeners to register for the MBeans registered by this exporter */
private NotificationListenerBean[] notificationListeners;
/** Map of actually registered NotificationListeners */
private final Map registeredNotificationListeners =
new LinkedHashMap();
/** Stores the ClassLoader to use for generating lazy-init proxies */
private ClassLoader beanClassLoader = ClassUtils.getDefaultClassLoader();
/** Stores the BeanFactory for use in autodetection process */
private ListableBeanFactory beanFactory;
/**
* Supply a {@code Map} of beans to be registered with the JMX
* {@code MBeanServer}.
* The String keys are the basis for the creation of JMX object names.
* By default, a JMX {@code ObjectName} will be created straight
* from the given key. This can be customized through specifying a
* custom {@code NamingStrategy}.
*
Both bean instances and bean names are allowed as values.
* Bean instances are typically linked in through bean references.
* Bean names will be resolved as beans in the current factory, respecting
* lazy-init markers (that is, not triggering initialization of such beans).
* @param beans Map with JMX names as keys and bean instances or bean names
* as values
* @see #setNamingStrategy
* @see org.springframework.jmx.export.naming.KeyNamingStrategy
* @see javax.management.ObjectName#ObjectName(String)
*/
public void setBeans(Map beans) {
this.beans = beans;
}
/**
* Set whether to autodetect MBeans in the bean factory that this exporter
* runs in. Will also ask an {@code AutodetectCapableMBeanInfoAssembler}
* if available.
* This feature is turned off by default. Explicitly specify
* {@code true} here to enable autodetection.
* @see #setAssembler
* @see AutodetectCapableMBeanInfoAssembler
* @see #isMBean
*/
public void setAutodetect(boolean autodetect) {
this.autodetectMode = (autodetect ? AUTODETECT_ALL : AUTODETECT_NONE);
}
/**
* Set the autodetection mode to use.
* @exception IllegalArgumentException if the supplied value is not
* one of the {@code AUTODETECT_} constants
* @see #setAutodetectModeName(String)
* @see #AUTODETECT_ALL
* @see #AUTODETECT_ASSEMBLER
* @see #AUTODETECT_MBEAN
* @see #AUTODETECT_NONE
*/
public void setAutodetectMode(int autodetectMode) {
if (!constants.getValues(CONSTANT_PREFIX_AUTODETECT).contains(autodetectMode)) {
throw new IllegalArgumentException("Only values of autodetect constants allowed");
}
this.autodetectMode = autodetectMode;
}
/**
* Set the autodetection mode to use by name.
* @exception IllegalArgumentException if the supplied value is not resolvable
* to one of the {@code AUTODETECT_} constants or is {@code null}
* @see #setAutodetectMode(int)
* @see #AUTODETECT_ALL
* @see #AUTODETECT_ASSEMBLER
* @see #AUTODETECT_MBEAN
* @see #AUTODETECT_NONE
*/
public void setAutodetectModeName(String constantName) {
if (constantName == null || !constantName.startsWith(CONSTANT_PREFIX_AUTODETECT)) {
throw new IllegalArgumentException("Only autodetect constants allowed");
}
this.autodetectMode = (Integer) constants.asNumber(constantName);
}
/**
* Specify whether to allow eager initialization of candidate beans
* when autodetecting MBeans in the Spring application context.
*
Default is "false", respecting lazy-init flags on bean definitions.
* Switch this to "true" in order to search lazy-init beans as well,
* including FactoryBean-produced objects that haven't been initialized yet.
*/
public void setAllowEagerInit(boolean allowEagerInit) {
this.allowEagerInit = allowEagerInit;
}
/**
* Set the implementation of the {@code MBeanInfoAssembler} interface to use
* for this exporter. Default is a {@code SimpleReflectiveMBeanInfoAssembler}.
*
The passed-in assembler can optionally implement the
* {@code AutodetectCapableMBeanInfoAssembler} interface, which enables it
* to participate in the exporter's MBean autodetection process.
* @see org.springframework.jmx.export.assembler.SimpleReflectiveMBeanInfoAssembler
* @see org.springframework.jmx.export.assembler.AutodetectCapableMBeanInfoAssembler
* @see org.springframework.jmx.export.assembler.MetadataMBeanInfoAssembler
* @see #setAutodetect
*/
public void setAssembler(MBeanInfoAssembler assembler) {
this.assembler = assembler;
}
/**
* Set the implementation of the {@code ObjectNamingStrategy} interface
* to use for this exporter. Default is a {@code KeyNamingStrategy}.
* @see org.springframework.jmx.export.naming.KeyNamingStrategy
* @see org.springframework.jmx.export.naming.MetadataNamingStrategy
*/
public void setNamingStrategy(ObjectNamingStrategy namingStrategy) {
this.namingStrategy = namingStrategy;
}
/**
* Indicates whether Spring should ensure that {@link ObjectName ObjectNames}
* generated by the configured {@link ObjectNamingStrategy} for
* runtime-registered MBeans ({@link #registerManagedResource}) should get
* modified: to ensure uniqueness for every instance of a managed {@code Class}.
*
The default value is {@code true}.
* @see #registerManagedResource
* @see JmxUtils#appendIdentityToObjectName(javax.management.ObjectName, Object)
*/
public void setEnsureUniqueRuntimeObjectNames(boolean ensureUniqueRuntimeObjectNames) {
this.ensureUniqueRuntimeObjectNames = ensureUniqueRuntimeObjectNames;
}
/**
* Indicates whether or not the managed resource should be exposed on the
* {@link Thread#getContextClassLoader() thread context ClassLoader} before
* allowing any invocations on the MBean to occur.
*
The default value is {@code true}, exposing a {@link SpringModelMBean}
* which performs thread context ClassLoader management. Switch this flag off to
* expose a standard JMX {@link javax.management.modelmbean.RequiredModelMBean}.
*/
public void setExposeManagedResourceClassLoader(boolean exposeManagedResourceClassLoader) {
this.exposeManagedResourceClassLoader = exposeManagedResourceClassLoader;
}
/**
* Set the list of names for beans that should be excluded from autodetection.
*/
public void setExcludedBeans(String... excludedBeans) {
this.excludedBeans.clear();
if (excludedBeans != null) {
this.excludedBeans.addAll(Arrays.asList(excludedBeans));
}
}
/**
* Add the name of bean that should be excluded from autodetection.
*/
public void addExcludedBean(String excludedBean) {
Assert.notNull(excludedBean, "ExcludedBean must not be null");
this.excludedBeans.add(excludedBean);
}
/**
* Set the {@code MBeanExporterListener}s that should be notified
* of MBean registration and unregistration events.
* @see MBeanExporterListener
*/
public void setListeners(MBeanExporterListener... listeners) {
this.listeners = listeners;
}
/**
* Set the {@link NotificationListenerBean NotificationListenerBeans}
* containing the
* {@link javax.management.NotificationListener NotificationListeners}
* that will be registered with the {@link MBeanServer}.
* @see #setNotificationListenerMappings(java.util.Map)
* @see NotificationListenerBean
*/
public void setNotificationListeners(NotificationListenerBean... notificationListeners) {
this.notificationListeners = notificationListeners;
}
/**
* Set the {@link NotificationListener NotificationListeners} to register
* with the {@link javax.management.MBeanServer}.
*
The key of each entry in the {@code Map} is a {@link String}
* representation of the {@link javax.management.ObjectName} or the bean
* name of the MBean the listener should be registered for. Specifying an
* asterisk ({@code *}) for a key will cause the listener to be
* associated with all MBeans registered by this class at startup time.
*
The value of each entry is the
* {@link javax.management.NotificationListener} to register. For more
* advanced options such as registering
* {@link javax.management.NotificationFilter NotificationFilters} and
* handback objects see {@link #setNotificationListeners(NotificationListenerBean[])}.
*/
public void setNotificationListenerMappings(Map listeners) {
Assert.notNull(listeners, "'listeners' must not be null");
List notificationListeners =
new ArrayList(listeners.size());
for (Map.Entry entry : listeners.entrySet()) {
// Get the listener from the map value.
NotificationListenerBean bean = new NotificationListenerBean(entry.getValue());
// Get the ObjectName from the map key.
Object key = entry.getKey();
if (key != null && !WILDCARD.equals(key)) {
// This listener is mapped to a specific ObjectName.
bean.setMappedObjectName(entry.getKey());
}
notificationListeners.add(bean);
}
this.notificationListeners =
notificationListeners.toArray(new NotificationListenerBean[notificationListeners.size()]);
}
@Override
public void setBeanClassLoader(ClassLoader classLoader) {
this.beanClassLoader = classLoader;
}
/**
* This callback is only required for resolution of bean names in the
* {@link #setBeans(java.util.Map) "beans"} {@link Map} and for
* autodetection of MBeans (in the latter case, a
* {@code ListableBeanFactory} is required).
* @see #setBeans
* @see #setAutodetect
*/
@Override
public void setBeanFactory(BeanFactory beanFactory) {
if (beanFactory instanceof ListableBeanFactory) {
this.beanFactory = (ListableBeanFactory) beanFactory;
}
else {
logger.info("MBeanExporter not running in a ListableBeanFactory: autodetection of MBeans not available.");
}
}
//---------------------------------------------------------------------
// Lifecycle in bean factory: automatically register/unregister beans
//---------------------------------------------------------------------
@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();
}
}
/**
* Kick off bean registration automatically after the regular singleton instantiation phase.
* @see #registerBeans()
*/
@Override
public void afterSingletonsInstantiated() {
try {
logger.info("Registering beans for JMX exposure on startup");
registerBeans();
registerNotificationListeners();
}
catch (RuntimeException ex) {
// Unregister beans already registered by this exporter.
unregisterNotificationListeners();
unregisterBeans();
throw ex;
}
}
/**
* Unregisters all beans that this exported has exposed via JMX
* when the enclosing {@code ApplicationContext} is destroyed.
*/
@Override
public void destroy() {
logger.info("Unregistering JMX-exposed beans on shutdown");
unregisterNotificationListeners();
unregisterBeans();
}
//---------------------------------------------------------------------
// Implementation of MBeanExportOperations interface
//---------------------------------------------------------------------
@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;
}
@Override
public void registerManagedResource(Object managedResource, ObjectName objectName) throws MBeanExportException {
Assert.notNull(managedResource, "Managed resource must not be null");
Assert.notNull(objectName, "ObjectName must not be null");
try {
if (isMBean(managedResource.getClass())) {
doRegister(managedResource, objectName);
}
else {
ModelMBean mbean = createAndConfigureMBean(managedResource, managedResource.getClass().getName());
doRegister(mbean, objectName);
injectNotificationPublisherIfNecessary(managedResource, mbean, objectName);
}
}
catch (JMException ex) {
throw new UnableToRegisterMBeanException(
"Unable to register MBean [" + managedResource + "] with object name [" + objectName + "]", ex);
}
}
@Override
public void unregisterManagedResource(ObjectName objectName) {
Assert.notNull(objectName, "ObjectName must not be null");
doUnregister(objectName);
}
//---------------------------------------------------------------------
// Exporter implementation
//---------------------------------------------------------------------
/**
* Registers the defined beans with the {@link MBeanServer}.
* Each bean is exposed to the {@code MBeanServer} via a
* {@code ModelMBean}. The actual implemetation of the
* {@code ModelMBean} interface used depends on the implementation of
* the {@code ModelMBeanProvider} interface that is configured. By
* default the {@code RequiredModelMBean} class that is supplied with
* all JMX implementations is used.
*
The management interface produced for each bean is dependent on the
* {@code MBeanInfoAssembler} implementation being used. The
* {@code ObjectName} given to each bean is dependent on the
* implementation of the {@code ObjectNamingStrategy} interface being used.
*/
protected void registerBeans() {
// The beans property may be null, for example if we are relying solely on autodetection.
if (this.beans == null) {
this.beans = new HashMap();
// Use AUTODETECT_ALL as default in no beans specified explicitly.
if (this.autodetectMode == null) {
this.autodetectMode = AUTODETECT_ALL;
}
}
// Perform autodetection, if desired.
int mode = (this.autodetectMode != null ? this.autodetectMode : AUTODETECT_NONE);
if (mode != AUTODETECT_NONE) {
if (this.beanFactory == null) {
throw new MBeanExportException("Cannot autodetect MBeans if not running in a BeanFactory");
}
if (mode == AUTODETECT_MBEAN || mode == AUTODETECT_ALL) {
// Autodetect any beans that are already MBeans.
logger.debug("Autodetecting user-defined JMX MBeans");
autodetectMBeans();
}
// Allow the assembler a chance to vote for bean inclusion.
if ((mode == AUTODETECT_ASSEMBLER || mode == AUTODETECT_ALL) &&
this.assembler instanceof AutodetectCapableMBeanInfoAssembler) {
autodetectBeans((AutodetectCapableMBeanInfoAssembler) this.assembler);
}
}
if (!this.beans.isEmpty()) {
for (Map.Entry entry : this.beans.entrySet()) {
registerBeanNameOrInstance(entry.getValue(), entry.getKey());
}
}
}
/**
* Return whether the specified bean definition should be considered as lazy-init.
* @param beanFactory the bean factory that is supposed to contain the bean definition
* @param beanName the name of the bean to check
* @see org.springframework.beans.factory.config.ConfigurableListableBeanFactory#getBeanDefinition
* @see org.springframework.beans.factory.config.BeanDefinition#isLazyInit
*/
protected boolean isBeanDefinitionLazyInit(ListableBeanFactory beanFactory, String beanName) {
return (beanFactory instanceof ConfigurableListableBeanFactory && beanFactory.containsBeanDefinition(beanName) &&
((ConfigurableListableBeanFactory) beanFactory).getBeanDefinition(beanName).isLazyInit());
}
/**
* Registers an individual bean with the {@link #setServer MBeanServer}.
* This method is responsible for deciding how a bean
* should be exposed to the {@code MBeanServer}. Specifically, if the
* supplied {@code mapValue} is the name of a bean that is configured
* for lazy initialization, then a proxy to the resource is registered with
* the {@code MBeanServer} so that the the lazy load behavior is
* honored. If the bean is already an MBean then it will be registered
* directly with the {@code MBeanServer} without any intervention. For
* all other beans or bean names, the resource itself is registered with
* the {@code MBeanServer} directly.
* @param mapValue the value configured for this bean in the beans map;
* may be either the {@code String} name of a bean, or the bean itself
* @param beanKey the key associated with this bean in the beans map
* @return the {@code ObjectName} under which the resource was registered
* @throws MBeanExportException if the export failed
* @see #setBeans
* @see #registerBeanInstance
* @see #registerLazyInit
*/
protected ObjectName registerBeanNameOrInstance(Object mapValue, String beanKey) throws MBeanExportException {
try {
if (mapValue instanceof String) {
// Bean name pointing to a potentially lazy-init bean in the factory.
if (this.beanFactory == null) {
throw new MBeanExportException("Cannot resolve bean names if not running in a BeanFactory");
}
String beanName = (String) mapValue;
if (isBeanDefinitionLazyInit(this.beanFactory, beanName)) {
ObjectName objectName = registerLazyInit(beanName, beanKey);
replaceNotificationListenerBeanNameKeysIfNecessary(beanName, objectName);
return objectName;
}
else {
Object bean = this.beanFactory.getBean(beanName);
ObjectName objectName = registerBeanInstance(bean, beanKey);
replaceNotificationListenerBeanNameKeysIfNecessary(beanName, objectName);
return objectName;
}
}
else {
// Plain bean instance -> register it directly.
if (this.beanFactory != null) {
Map beansOfSameType =
this.beanFactory.getBeansOfType(mapValue.getClass(), false, this.allowEagerInit);
for (Map.Entry entry : beansOfSameType.entrySet()) {
if (entry.getValue() == mapValue) {
String beanName = entry.getKey();
ObjectName objectName = registerBeanInstance(mapValue, beanKey);
replaceNotificationListenerBeanNameKeysIfNecessary(beanName, objectName);
return objectName;
}
}
}
return registerBeanInstance(mapValue, beanKey);
}
}
catch (Exception ex) {
throw new UnableToRegisterMBeanException(
"Unable to register MBean [" + mapValue + "] with key '" + beanKey + "'", ex);
}
}
/**
* Replaces any bean names used as keys in the {@code NotificationListener}
* mappings with their corresponding {@code ObjectName} values.
* @param beanName the name of the bean to be registered
* @param objectName the {@code ObjectName} under which the bean will be registered
* with the {@code MBeanServer}
*/
private void replaceNotificationListenerBeanNameKeysIfNecessary(String beanName, ObjectName objectName) {
if (this.notificationListeners != null) {
for (NotificationListenerBean notificationListener : this.notificationListeners) {
notificationListener.replaceObjectName(beanName, objectName);
}
}
}
/**
* Registers an existing MBean or an MBean adapter for a plain bean
* with the {@code MBeanServer}.
* @param bean the bean to register, either an MBean or a plain bean
* @param beanKey the key associated with this bean in the beans map
* @return the {@code ObjectName} under which the bean was registered
* with the {@code MBeanServer}
*/
private ObjectName registerBeanInstance(Object bean, String beanKey) throws JMException {
ObjectName objectName = getObjectName(bean, beanKey);
Object mbeanToExpose = null;
if (isMBean(bean.getClass())) {
mbeanToExpose = bean;
}
else {
DynamicMBean adaptedBean = adaptMBeanIfPossible(bean);
if (adaptedBean != null) {
mbeanToExpose = adaptedBean;
}
}
if (mbeanToExpose != null) {
if (logger.isInfoEnabled()) {
logger.info("Located MBean '" + beanKey + "': registering with JMX server as MBean [" +
objectName + "]");
}
doRegister(mbeanToExpose, objectName);
}
else {
if (logger.isInfoEnabled()) {
logger.info("Located managed bean '" + beanKey + "': registering with JMX server as MBean [" +
objectName + "]");
}
ModelMBean mbean = createAndConfigureMBean(bean, beanKey);
doRegister(mbean, objectName);
injectNotificationPublisherIfNecessary(bean, mbean, objectName);
}
return objectName;
}
/**
* Registers beans that are configured for lazy initialization with the
* {@code MBeanServer} indirectly through a proxy.
* @param beanName the name of the bean in the {@code BeanFactory}
* @param beanKey the key associated with this bean in the beans map
* @return the {@code ObjectName} under which the bean was registered
* with the {@code MBeanServer}
*/
private ObjectName registerLazyInit(String beanName, String beanKey) throws JMException {
ProxyFactory proxyFactory = new ProxyFactory();
proxyFactory.setProxyTargetClass(true);
proxyFactory.setFrozen(true);
if (isMBean(this.beanFactory.getType(beanName))) {
// A straight MBean... Let's create a simple lazy-init CGLIB proxy for it.
LazyInitTargetSource targetSource = new LazyInitTargetSource();
targetSource.setTargetBeanName(beanName);
targetSource.setBeanFactory(this.beanFactory);
proxyFactory.setTargetSource(targetSource);
Object proxy = proxyFactory.getProxy(this.beanClassLoader);
ObjectName objectName = getObjectName(proxy, beanKey);
if (logger.isDebugEnabled()) {
logger.debug("Located MBean '" + beanKey + "': registering with JMX server as lazy-init MBean [" +
objectName + "]");
}
doRegister(proxy, objectName);
return objectName;
}
else {
// A simple bean... Let's create a lazy-init ModelMBean proxy with notification support.
NotificationPublisherAwareLazyTargetSource targetSource = new NotificationPublisherAwareLazyTargetSource();
targetSource.setTargetBeanName(beanName);
targetSource.setBeanFactory(this.beanFactory);
proxyFactory.setTargetSource(targetSource);
Object proxy = proxyFactory.getProxy(this.beanClassLoader);
ObjectName objectName = getObjectName(proxy, beanKey);
if (logger.isDebugEnabled()) {
logger.debug("Located simple bean '" + beanKey + "': registering with JMX server as lazy-init MBean [" +
objectName + "]");
}
ModelMBean mbean = createAndConfigureMBean(proxy, beanKey);
targetSource.setModelMBean(mbean);
targetSource.setObjectName(objectName);
doRegister(mbean, objectName);
return objectName;
}
}
/**
* Retrieve the {@code ObjectName} for a bean.
* If the bean implements the {@code SelfNaming} interface, then the
* {@code ObjectName} will be retrieved using {@code SelfNaming.getObjectName()}.
* Otherwise, the configured {@code ObjectNamingStrategy} is used.
* @param bean the name of the bean in the {@code BeanFactory}
* @param beanKey the key associated with the bean in the beans map
* @return the {@code ObjectName} for the supplied bean
* @throws javax.management.MalformedObjectNameException
* if the retrieved {@code ObjectName} is malformed
*/
protected ObjectName getObjectName(Object bean, String beanKey) throws MalformedObjectNameException {
if (bean instanceof SelfNaming) {
return ((SelfNaming) bean).getObjectName();
}
else {
return this.namingStrategy.getObjectName(bean, beanKey);
}
}
/**
* Determine whether the given bean class qualifies as an MBean as-is.
*
The default implementation delegates to {@link JmxUtils#isMBean},
* which checks for {@link javax.management.DynamicMBean} classes as well
* as classes with corresponding "*MBean" interface (Standard MBeans)
* or corresponding "*MXBean" interface (Java 6 MXBeans).
* @param beanClass the bean class to analyze
* @return whether the class qualifies as an MBean
* @see org.springframework.jmx.support.JmxUtils#isMBean(Class)
*/
protected boolean isMBean(Class beanClass) {
return JmxUtils.isMBean(beanClass);
}
/**
* Build an adapted MBean for the given bean instance, if possible.
*
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