Package org.springframework.jmx.export

Class MBeanExporter

java.lang.Object
org.springframework.jmx.support.MBeanRegistrationSupport
org.springframework.jmx.export.MBeanExporter
All Implemented Interfaces:
Aware, BeanClassLoaderAware, BeanFactoryAware, DisposableBean, InitializingBean, SmartInitializingSingleton, MBeanExportOperations
Direct Known Subclasses:
AnnotationMBeanExporter
public class MBeanExporter extends MBeanRegistrationSupport implements MBeanExportOperations, BeanClassLoaderAware, BeanFactoryAware, InitializingBean, SmartInitializingSingleton, DisposableBean
JMX exporter that allows for exposing any Spring-managed bean to a JMX 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 MBeanInfoAssembler.

A list of MBeanExporterListeners can be registered via the listeners property, allowing application code to be notified of MBean registration and unregistration events.

This exporter is compatible with MBeans as well as MXBeans.

Since:
1.2
Author:
Rob Harrop, Juergen Hoeller, Rick Evans, Mark Fisher, Stephane Nicoll
See Also:

  • Field Details

    • AUTODETECT_NONE

      public static final int AUTODETECT_NONE
      Autodetection mode indicating that no autodetection should be used.
      See Also:

    • AUTODETECT_MBEAN

      public static final int AUTODETECT_MBEAN
      Autodetection mode indicating that only valid MBeans should be autodetected.
      See Also:

    • AUTODETECT_ASSEMBLER

      public static final int AUTODETECT_ASSEMBLER
      Autodetection mode indicating that only the MBeanInfoAssembler should be able to autodetect beans.
      See Also:

    • AUTODETECT_ALL

      public static final int AUTODETECT_ALL
      Autodetection mode indicating that all autodetection mechanisms should be used.
      See Also:

  • Constructor Details

    • MBeanExporter

      public MBeanExporter()

  • Method Details

    • setBeans

      public void setBeans(Map<String,Object> beans)
      Supply a Map of beans to be registered with the JMX MBeanServer.

      The String keys are the basis for the creation of JMX object names. By default, a JMX ObjectName will be created straight from the given key. This can be customized through specifying a custom 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).

      Parameters:
      beans - a Map with JMX names as keys and bean instances or bean names as values
      See Also:

    • setAutodetect

      public void setAutodetect(boolean autodetect)
      Set whether to autodetect MBeans in the bean factory that this exporter runs in. Will also ask an AutodetectCapableMBeanInfoAssembler if available.

      This feature is turned off by default. Explicitly specify true here to enable autodetection.

      See Also:

    • setAutodetectMode

      public void setAutodetectMode(int autodetectMode)
      Set the autodetection mode to use.
      Throws:
      IllegalArgumentException - if the supplied value is not one of the AUTODETECT_ constants
      See Also:

    • setAutodetectModeName

      public void setAutodetectModeName(String constantName)
      Set the autodetection mode to use by name.
      Throws:
      IllegalArgumentException - if the supplied value is not resolvable to one of the AUTODETECT_ constants or is null
      See Also:

    • setAllowEagerInit

      public void setAllowEagerInit(boolean allowEagerInit)
      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.

    • setAssembler

      public void setAssembler(MBeanInfoAssembler assembler)
      Set the implementation of the MBeanInfoAssembler interface to use for this exporter. Default is a SimpleReflectiveMBeanInfoAssembler.

      The passed-in assembler can optionally implement the AutodetectCapableMBeanInfoAssembler interface, which enables it to participate in the exporter's MBean autodetection process.

      See Also:

    • setNamingStrategy

      public void setNamingStrategy(ObjectNamingStrategy namingStrategy)
      Set the implementation of the ObjectNamingStrategy interface to use for this exporter. Default is a KeyNamingStrategy.
      See Also:

    • setEnsureUniqueRuntimeObjectNames

      public void setEnsureUniqueRuntimeObjectNames(boolean ensureUniqueRuntimeObjectNames)
      Indicates whether Spring should ensure that ObjectNames generated by the configured ObjectNamingStrategy for runtime-registered MBeans (registerManagedResource(java.lang.Object)) should get modified: to ensure uniqueness for every instance of a managed Class.

      The default value is true.

      See Also:

    • setExposeManagedResourceClassLoader

      public void setExposeManagedResourceClassLoader(boolean exposeManagedResourceClassLoader)
      Indicates whether or not the managed resource should be exposed on the thread context ClassLoader before allowing any invocations on the MBean to occur.

      The default value is true, exposing a SpringModelMBean which performs thread context ClassLoader management. Switch this flag off to expose a standard JMX RequiredModelMBean.

    • setExcludedBeans

      public void setExcludedBeans(String... excludedBeans)
      Set the list of names for beans that should be excluded from autodetection.

    • addExcludedBean

      public void addExcludedBean(String excludedBean)
      Add the name of bean that should be excluded from autodetection.

    • setListeners

      public void setListeners(MBeanExporterListener... listeners)
      Set the MBeanExporterListeners that should be notified of MBean registration and unregistration events.
      See Also:

    • setNotificationListeners

      public void setNotificationListeners(NotificationListenerBean... notificationListeners)
      Set the NotificationListenerBeans containing the NotificationListeners that will be registered with the MBeanServer.
      See Also:

    • setNotificationListenerMappings

      public void setNotificationListenerMappings(Map<?,? extends NotificationListener> listeners)
      Set the NotificationListeners to register with the MBeanServer.

      The key of each entry in the Map is a String representation of the ObjectName or the bean name of the MBean the listener should be registered for. Specifying an asterisk (*) 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 NotificationListener to register. For more advanced options such as registering NotificationFilters and handback objects see setNotificationListeners(NotificationListenerBean[]).

    • setBeanClassLoader

      public void setBeanClassLoader(ClassLoader classLoader)
      Description copied from interface: BeanClassLoaderAware
      Callback that supplies the bean class loader to a bean instance.

      Invoked after the population of normal bean properties but before an initialization callback such as InitializingBean's InitializingBean.afterPropertiesSet() method or a custom init-method.

      Specified by:
      setBeanClassLoader in interface BeanClassLoaderAware
      Parameters:
      classLoader - the owning class loader

    • setBeanFactory

      public void setBeanFactory(BeanFactory beanFactory)
      This callback is only required for resolution of bean names in the "beans" Map and for autodetection of MBeans (in the latter case, a ListableBeanFactory is required).
      Specified by:
      setBeanFactory in interface BeanFactoryAware
      Parameters:
      beanFactory - owning BeanFactory (never null). The bean can immediately call methods on the factory.
      See Also:

    • afterPropertiesSet

      public void afterPropertiesSet()
      Description copied from interface: InitializingBean
      Invoked by the containing BeanFactory after it has set all bean properties and satisfied BeanFactoryAware, ApplicationContextAware etc.

      This method allows the bean instance to perform validation of its overall configuration and final initialization when all bean properties have been set.

      Specified by:
      afterPropertiesSet in interface InitializingBean

    • afterSingletonsInstantiated

      public void afterSingletonsInstantiated()
      Kick off bean registration automatically after the regular singleton instantiation phase.
      Specified by:
      afterSingletonsInstantiated in interface SmartInitializingSingleton
      See Also:

    • destroy

      public void destroy()
      Unregisters all beans that this exported has exposed via JMX when the enclosing ApplicationContext is destroyed.
      Specified by:
      destroy in interface DisposableBean

    • registerManagedResource

      public ObjectName registerManagedResource(Object managedResource) throws MBeanExportException
      Description copied from interface: MBeanExportOperations
      Register the supplied resource with JMX. If the resource is not a valid MBean already, Spring will generate a management interface for it. The exact interface generated will depend on the implementation and its configuration. This call also generates an ObjectName for the managed resource and returns this to the caller.
      Specified by:
      registerManagedResource in interface MBeanExportOperations
      Parameters:
      managedResource - the resource to expose via JMX
      Returns:
      the ObjectName under which the resource was exposed
      Throws:
      MBeanExportException - if Spring is unable to generate an ObjectName or register the MBean

    • registerManagedResource

      public void registerManagedResource(Object managedResource, ObjectName objectName) throws MBeanExportException
      Description copied from interface: MBeanExportOperations
      Register the supplied resource with JMX. If the resource is not a valid MBean already, Spring will generate a management interface for it. The exact interface generated will depend on the implementation and its configuration.
      Specified by:
      registerManagedResource in interface MBeanExportOperations
      Parameters:
      managedResource - the resource to expose via JMX
      objectName - the ObjectName under which to expose the resource
      Throws:
      MBeanExportException - if Spring is unable to register the MBean

    • unregisterManagedResource

      public void unregisterManagedResource(ObjectName objectName)
      Description copied from interface: MBeanExportOperations
      Remove the specified MBean from the underlying MBeanServer registry.
      Specified by:
      unregisterManagedResource in interface MBeanExportOperations
      Parameters:
      objectName - the ObjectName of the resource to remove

    • registerBeans

      protected void registerBeans()
      Register the defined beans with the MBeanServer.

      Each bean is exposed to the MBeanServer via a ModelMBean. The actual implementation of the ModelMBean interface used depends on the implementation of the ModelMBeanProvider interface that is configured. By default the RequiredModelMBean class that is supplied with all JMX implementations is used.

      The management interface produced for each bean is dependent on the MBeanInfoAssembler implementation being used. The ObjectName given to each bean is dependent on the implementation of the ObjectNamingStrategy interface being used.

    • isBeanDefinitionLazyInit

      protected boolean isBeanDefinitionLazyInit(ListableBeanFactory beanFactory, String beanName)
      Return whether the specified bean definition should be considered as lazy-init.
      Parameters:
      beanFactory - the bean factory that is supposed to contain the bean definition
      beanName - the name of the bean to check
      See Also:

    • registerBeanNameOrInstance

      protected ObjectName registerBeanNameOrInstance(Object mapValue, String beanKey) throws MBeanExportException
      Register an individual bean with the MBeanServer.

      This method is responsible for deciding how a bean should be exposed to the MBeanServer. Specifically, if the supplied mapValue is the name of a bean that is configured for lazy initialization, then a proxy to the resource is registered with the MBeanServer so that the lazy load behavior is honored. If the bean is already an MBean then it will be registered directly with the MBeanServer without any intervention. For all other beans or bean names, the resource itself is registered with the MBeanServer directly.

      Parameters:
      mapValue - the value configured for this bean in the beans map; may be either the String name of a bean, or the bean itself
      beanKey - the key associated with this bean in the beans map
      Returns:
      the ObjectName under which the resource was registered
      Throws:
      MBeanExportException - if the export failed
      See Also:

    • getObjectName

      protected ObjectName getObjectName(Object bean, @Nullable String beanKey) throws MalformedObjectNameException
      Retrieve the ObjectName for a bean.

      If the bean implements the SelfNaming interface, then the ObjectName will be retrieved using SelfNaming.getObjectName(). Otherwise, the configured ObjectNamingStrategy is used.

      Parameters:
      bean - the name of the bean in the BeanFactory
      beanKey - the key associated with the bean in the beans map
      Returns:
      the ObjectName for the supplied bean
      Throws:
      MalformedObjectNameException - if the retrieved ObjectName is malformed

    • isMBean

      protected boolean isMBean(@Nullable Class<?> beanClass)
      Determine whether the given bean class qualifies as an MBean as-is.

      The default implementation delegates to JmxUtils.isMBean(java.lang.Class<?>), which checks for DynamicMBean classes as well as classes with corresponding "*MBean" interface (Standard MBeans) or corresponding "*MXBean" interface (Java 6 MXBeans).

      Parameters:
      beanClass - the bean class to analyze
      Returns:
      whether the class qualifies as an MBean
      See Also:

    • adaptMBeanIfPossible

      @Nullable protected DynamicMBean adaptMBeanIfPossible(Object bean) throws JMException
      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.

      Parameters:
      bean - the original bean instance
      Returns:
      the adapted MBean, or null if not possible
      Throws:
      JMException

    • createAndConfigureMBean

      protected ModelMBean createAndConfigureMBean(Object managedResource, String beanKey) throws MBeanExportException
      Creates an MBean that is configured with the appropriate management interface for the supplied managed resource.
      Parameters:
      managedResource - the resource that is to be exported as an MBean
      beanKey - the key associated with the managed bean
      Throws:
      MBeanExportException
      See Also:

    • createModelMBean

      protected ModelMBean createModelMBean() throws MBeanException
      Create an instance of a class that implements ModelMBean.

      This method is called to obtain a ModelMBean instance to use when registering a bean. This method is called once per bean during the registration phase and must return a new instance of ModelMBean

      Returns:
      a new instance of a class that implements ModelMBean
      Throws:
      MBeanException - if creation of the ModelMBean failed

    • onRegister

      protected void onRegister(ObjectName objectName)
      Called when an MBean is registered. Notifies all registered MBeanExporterListeners of the registration event.

      Please note that if an MBeanExporterListener throws a (runtime) exception when notified, this will essentially interrupt the notification process and any remaining listeners that have yet to be notified will not (obviously) receive the MBeanExporterListener.mbeanRegistered(javax.management.ObjectName) callback.

      Overrides:
      onRegister in class MBeanRegistrationSupport
      Parameters:
      objectName - the ObjectName of the registered MBean

    • onUnregister

      protected void onUnregister(ObjectName objectName)
      Called when an MBean is unregistered. Notifies all registered MBeanExporterListeners of the unregistration event.

      Please note that if an MBeanExporterListener throws a (runtime) exception when notified, this will essentially interrupt the notification process and any remaining listeners that have yet to be notified will not (obviously) receive the MBeanExporterListener.mbeanUnregistered(javax.management.ObjectName) callback.

      Overrides:
      onUnregister in class MBeanRegistrationSupport
      Parameters:
      objectName - the ObjectName of the unregistered MBean