Class JndiJmx

  • All Implemented Interfaces:
    java.util.EventListener, javax.management.DynamicMBean, 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.
    • Field Detail

      • log

        private static org.apache.commons.logging.Log log
      • componentContext

        protected javax.naming.Context componentContext
      • descriptorContext

        protected javax.naming.Context descriptorContext
      • configContext

        protected javax.naming.Context configContext
      • mserver

        javax.management.MBeanServer mserver
      • attributes

        java.util.Hashtable attributes
      • instances

        java.util.Hashtable instances
    • Constructor Detail

      • JndiJmx

        public JndiJmx()
                throws javax.management.MBeanException
        Protected constructor to require use of the factory create method.
        Throws:
        javax.management.MBeanException
    • Method Detail

      • setComponentContext

        public void setComponentContext​(javax.naming.Context ctx)
        If a JNDI context is set, all components will be registered in the context.
        Parameters:
        ctx -
      • setDescriptorContext

        public void setDescriptorContext​(javax.naming.Context ctx)
        JNDI context for component descriptors ( metadata ).
        Parameters:
        ctx -
      • setConfigContext

        public void setConfigContext​(javax.naming.Context ctx)
        JNDI context where attributes will be stored for persistence
      • handleNotification

        public void handleNotification​(javax.management.Notification notification,
                                       java.lang.Object handback)
        Specified by:
        handleNotification in interface javax.management.NotificationListener
      • dumpStatus

        public java.lang.String dumpStatus()
                                    throws java.lang.Exception
        Throws:
        java.lang.Exception
      • replay

        public void replay()
                    throws java.lang.Exception
        Throws:
        java.lang.Exception
      • init

        public void init()
                  throws java.lang.Exception
        Throws:
        java.lang.Exception