org.apache.commons.modeler
Class JndiJmx
java.lang.Object
|
+--org.apache.commons.modeler.BaseModelMBean
|
+--org.apache.commons.modeler.JndiJmx
- All Implemented Interfaces:
- javax.management.DynamicMBean, EventListener, javax.management.MBeanRegistration, javax.management.modelmbean.ModelMBean, javax.management.modelmbean.ModelMBeanNotificationBroadcaster, javax.management.NotificationBroadcaster, javax.management.NotificationListener, javax.management.PersistentMBean
- public class JndiJmx
- extends BaseModelMBean
- implements javax.management.NotificationListener
Link between JNDI and JMX. JNDI can be used for persistence ( it is
an API for storing hierarchical data and a perfect fit for that ), as
well as an alternate view of the MBean registry.
If this component is enabled, all MBeans will be registered in JNDI, and
all attributes that are set via JMX can be stored in a DirContext.
This acts as a "recorder" for creation of mbeans and attribute changes
done via JMX.
XXX How can we control ( filter ) which mbeans will be registere ? Or
attributes ?
XXX How can we get the beans and attributes loaded before jndijmx ?
The intended use:
- do whatever you want to start the application
- load JndiJmx as an mbean
- make changes via JMX. All changes are recorded
- you can use JndiJmx to save the changes in a Jndi context.
- you can use JndiJmx to load changes from a JndiContext and replay them.
The main benefit is that only changed attributes are saved, and the Jndi
layer can preserve most of the original structure of the config file. The
alternative is to override the config files with config info extracted
from the live objects - but it's very hard to save only what was actually
changed and preserve structure and comments.
Constructor Summary |
JndiJmx()
Protected constructor to require use of the factory create method. |
Methods inherited from class org.apache.commons.modeler.BaseModelMBean |
addAttributeChangeNotificationListener, addNotificationListener, createDefaultModelMBeanInfo, createResource, getAttribute, getAttributes, getClassName, getJmxName, getManagedResource, getMBeanInfo, getModelerType, getNotificationInfo, getObjectName, getRegistry, initModelInfo, invoke, isModelMBeanInfoValid, load, postDeregister, postRegister, preDeregister, preRegister, removeAttributeChangeNotificationListener, removeAttributeChangeNotificationListener, removeNotificationListener, removeNotificationListener, removeNotificationListener, sendAttributeChangeNotification, sendAttributeChangeNotification, sendNotification, sendNotification, setAttribute, setAttributes, setManagedResource, setModeledType, setModelMBeanInfo, setRegistry, store, toString |
componentContext
protected Context componentContext
descriptorContext
protected Context descriptorContext
configContext
protected Context configContext
JndiJmx
public JndiJmx()
throws javax.management.MBeanException
- Protected constructor to require use of the factory create method.
setComponentContext
public void setComponentContext(Context ctx)
- If a JNDI context is set, all components
will be registered in the context.
- Parameters:
ctx
-
setDescriptorContext
public void setDescriptorContext(Context ctx)
- JNDI context for component descriptors ( metadata ).
- Parameters:
ctx
-
setConfigContext
public void setConfigContext(Context ctx)
- JNDI context where attributes will be stored for persistence
handleNotification
public void handleNotification(javax.management.Notification notification,
Object handback)
- Specified by:
handleNotification
in interface javax.management.NotificationListener
dumpStatus
public String dumpStatus()
throws Exception
replay
public void replay()
throws Exception
init
public void init()
throws Exception
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