Spring Framework

org.springframework.jmx.export.assembler
Class AbstractMBeanInfoAssembler

java.lang.Object
  extended by org.springframework.jmx.export.assembler.AbstractMBeanInfoAssembler
All Implemented Interfaces:
MBeanInfoAssembler
Direct Known Subclasses:
AbstractReflectiveMBeanInfoAssembler

public abstract class AbstractMBeanInfoAssembler
extends java.lang.Object
implements MBeanInfoAssembler

Abstract implementation of the MBeanInfoAssembler interface that encapsulates the creation of a ModelMBeanInfo instance but delegates the creation of metadata to subclasses.

This class offers two flavors of Class extraction from a managed bean instance: getTargetClass(java.lang.Object), extracting the target class behind any kind of AOP proxy, and getClassToExpose(java.lang.Object), returning the class or interface that will be searched for annotations and exposed to the JMX runtime.

Since:
1.2
Author:
Rob Harrop, Juergen Hoeller

Constructor Summary
AbstractMBeanInfoAssembler()
           
 
Method Summary
protected  void checkManagedBean(java.lang.Object managedBean)
          Check the given bean instance, throwing an IllegalArgumentException if it is not eligible for exposure with this assembler.
protected abstract  javax.management.modelmbean.ModelMBeanAttributeInfo[] getAttributeInfo(java.lang.Object managedBean, java.lang.String beanKey)
          Get the attribute metadata for the MBean resource.
protected  java.lang.String getClassName(java.lang.Object managedBean, java.lang.String beanKey)
          Get the class name of the MBean resource.
protected  java.lang.Class<?> getClassToExpose(java.lang.Class<?> beanClass)
          Return the class or interface to expose for the given bean class.
protected  java.lang.Class<?> getClassToExpose(java.lang.Object managedBean)
          Return the class or interface to expose for the given bean.
protected  javax.management.modelmbean.ModelMBeanConstructorInfo[] getConstructorInfo(java.lang.Object managedBean, java.lang.String beanKey)
          Get the constructor metadata for the MBean resource.
protected  java.lang.String getDescription(java.lang.Object managedBean, java.lang.String beanKey)
          Get the description of the MBean resource.
 javax.management.modelmbean.ModelMBeanInfo getMBeanInfo(java.lang.Object managedBean, java.lang.String beanKey)
          Create an instance of the ModelMBeanInfoSupport class supplied with all JMX implementations and populates the metadata through calls to the subclass.
protected  javax.management.modelmbean.ModelMBeanNotificationInfo[] getNotificationInfo(java.lang.Object managedBean, java.lang.String beanKey)
          Get the notification metadata for the MBean resource.
protected abstract  javax.management.modelmbean.ModelMBeanOperationInfo[] getOperationInfo(java.lang.Object managedBean, java.lang.String beanKey)
          Get the operation metadata for the MBean resource.
protected  java.lang.Class getTargetClass(java.lang.Object managedBean)
          Return the actual bean class of the given bean instance.
protected  void populateMBeanDescriptor(javax.management.Descriptor descriptor, java.lang.Object managedBean, java.lang.String beanKey)
          Called after the ModelMBeanInfo instance has been constructed but before it is passed to the MBeanExporter.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

AbstractMBeanInfoAssembler

public AbstractMBeanInfoAssembler()
Method Detail

getMBeanInfo

public javax.management.modelmbean.ModelMBeanInfo getMBeanInfo(java.lang.Object managedBean,
                                                               java.lang.String beanKey)
                                                        throws javax.management.JMException
Create an instance of the ModelMBeanInfoSupport class supplied with all JMX implementations and populates the metadata through calls to the subclass.

Specified by:
getMBeanInfo in interface MBeanInfoAssembler
Parameters:
managedBean - the bean that will be exposed (might be an AOP proxy)
beanKey - the key associated with the managed bean
Returns:
the populated ModelMBeanInfo instance
Throws:
javax.management.JMException - in case of errors
See Also:
getDescription(Object, String), getAttributeInfo(Object, String), getConstructorInfo(Object, String), getOperationInfo(Object, String), getNotificationInfo(Object, String), populateMBeanDescriptor(javax.management.Descriptor, Object, String)

checkManagedBean

protected void checkManagedBean(java.lang.Object managedBean)
                         throws java.lang.IllegalArgumentException
Check the given bean instance, throwing an IllegalArgumentException if it is not eligible for exposure with this assembler.

Default implementation is empty, accepting every bean instance.

Parameters:
managedBean - the bean that will be exposed (might be an AOP proxy)
Throws:
java.lang.IllegalArgumentException - the bean is not valid for exposure

getTargetClass

protected java.lang.Class getTargetClass(java.lang.Object managedBean)
Return the actual bean class of the given bean instance. This is the class exposed to description-style JMX properties.

Default implementation returns the target class for an AOP proxy, and the plain bean class else.

Parameters:
managedBean - the bean instance (might be an AOP proxy)
Returns:
the bean class to expose
See Also:
AopUtils.getTargetClass(Object)

getClassToExpose

protected java.lang.Class<?> getClassToExpose(java.lang.Object managedBean)
Return the class or interface to expose for the given bean. This is the class that will be searched for attributes and operations (for example, checked for annotations).

Parameters:
managedBean - the bean instance (might be an AOP proxy)
Returns:
the bean class to expose
See Also:
JmxUtils.getClassToExpose(Object)

getClassToExpose

protected java.lang.Class<?> getClassToExpose(java.lang.Class<?> beanClass)
Return the class or interface to expose for the given bean class. This is the class that will be searched for attributes and operations

Parameters:
beanClass - the bean class (might be an AOP proxy class)
Returns:
the bean class to expose
See Also:
JmxUtils.getClassToExpose(Class)

getClassName

protected java.lang.String getClassName(java.lang.Object managedBean,
                                        java.lang.String beanKey)
                                 throws javax.management.JMException
Get the class name of the MBean resource.

Default implementation returns a simple description for the MBean based on the class name.

Parameters:
managedBean - the bean instance (might be an AOP proxy)
beanKey - the key associated with the MBean in the beans map of the MBeanExporter
Returns:
the MBean description
Throws:
javax.management.JMException - in case of errors

getDescription

protected java.lang.String getDescription(java.lang.Object managedBean,
                                          java.lang.String beanKey)
                                   throws javax.management.JMException
Get the description of the MBean resource.

Default implementation returns a simple description for the MBean based on the class name.

Parameters:
managedBean - the bean instance (might be an AOP proxy)
beanKey - the key associated with the MBean in the beans map of the MBeanExporter
Throws:
javax.management.JMException - in case of errors

populateMBeanDescriptor

protected void populateMBeanDescriptor(javax.management.Descriptor descriptor,
                                       java.lang.Object managedBean,
                                       java.lang.String beanKey)
                                throws javax.management.JMException
Called after the ModelMBeanInfo instance has been constructed but before it is passed to the MBeanExporter.

Subclasses can implement this method to add additional descriptors to the MBean metadata. Default implementation is empty.

Parameters:
descriptor - the Descriptor for the MBean resource.
managedBean - the bean instance (might be an AOP proxy)
beanKey - the key associated with the MBean in the beans map of the MBeanExporter
Throws:
javax.management.JMException - in case of errors

getConstructorInfo

protected javax.management.modelmbean.ModelMBeanConstructorInfo[] getConstructorInfo(java.lang.Object managedBean,
                                                                                     java.lang.String beanKey)
                                                                              throws javax.management.JMException
Get the constructor metadata for the MBean resource. Subclasses should implement this method to return the appropriate metadata for all constructors that should be exposed in the management interface for the managed resource.

Default implementation returns an empty array of ModelMBeanConstructorInfo.

Parameters:
managedBean - the bean instance (might be an AOP proxy)
beanKey - the key associated with the MBean in the beans map of the MBeanExporter
Returns:
the constructor metadata
Throws:
javax.management.JMException - in case of errors

getNotificationInfo

protected javax.management.modelmbean.ModelMBeanNotificationInfo[] getNotificationInfo(java.lang.Object managedBean,
                                                                                       java.lang.String beanKey)
                                                                                throws javax.management.JMException
Get the notification metadata for the MBean resource. Subclasses should implement this method to return the appropriate metadata for all notifications that should be exposed in the management interface for the managed resource.

Default implementation returns an empty array of ModelMBeanNotificationInfo.

Parameters:
managedBean - the bean instance (might be an AOP proxy)
beanKey - the key associated with the MBean in the beans map of the MBeanExporter
Returns:
the notification metadata
Throws:
javax.management.JMException - in case of errors

getAttributeInfo

protected abstract javax.management.modelmbean.ModelMBeanAttributeInfo[] getAttributeInfo(java.lang.Object managedBean,
                                                                                          java.lang.String beanKey)
                                                                                   throws javax.management.JMException
Get the attribute metadata for the MBean resource. Subclasses should implement this method to return the appropriate metadata for all the attributes that should be exposed in the management interface for the managed resource.

Parameters:
managedBean - the bean instance (might be an AOP proxy)
beanKey - the key associated with the MBean in the beans map of the MBeanExporter
Returns:
the attribute metadata
Throws:
javax.management.JMException - in case of errors

getOperationInfo

protected abstract javax.management.modelmbean.ModelMBeanOperationInfo[] getOperationInfo(java.lang.Object managedBean,
                                                                                          java.lang.String beanKey)
                                                                                   throws javax.management.JMException
Get the operation metadata for the MBean resource. Subclasses should implement this method to return the appropriate metadata for all operations that should be exposed in the management interface for the managed resource.

Parameters:
managedBean - the bean instance (might be an AOP proxy)
beanKey - the key associated with the MBean in the beans map of the MBeanExporter
Returns:
the operation metadata
Throws:
javax.management.JMException - in case of errors

Spring Framework