Class ManagementManager

java.lang.Object
org.datanucleus.management.ManagementManager
public class ManagementManager extends Object
Management interface for DataNucleus. Management operations and attributes are exposed through this interface that holds statistics linked to a NucleusContext instance.

The mechanics for starting and stopping JMX servers are not defined here, and must be done by plug-ins, by providing the implementation of ManagementServer. This Manager controls the lifecycle of management servers. A management server is started when an instance of this class is created, and its shutdown when the close operation is invoked The management server startup is triggered when the Manager gets enabled.

  • Field Details

    • random

      public static final Random random
      Random number generator, for use when needing unique names.

    • nucleusContext

      private final NucleusContext nucleusContext
      NucleusContext that we are managing.

    • closed

      private boolean closed
      Whether this is closed.

    • mgmtServer

      private ManagementServer mgmtServer
      The Management Server.

    • domainName

      private String domainName
      Domain name for this configuration.

    • instanceName

      private String instanceName
      Instance name for this configuration.

  • Constructor Details

    • ManagementManager

      public ManagementManager(NucleusContext ctxt)
      Constructor for Management.
      Parameters:
      ctxt - the NucleusContext that we are operating for

  • Method Details

    • getInstanceName

      public String getInstanceName()
      Instance name for this manager instance.
      Returns:
      Instance name

    • getDomainName

      public String getDomainName()
      Domain name for this manager instance.
      Returns:
      Domain name

    • registerMBean

      public void registerMBean(Object mbean, String name)
      Register an MBean into the MBeanServer
      Parameters:
      mbean - the MBean instance
      name - the mbean name

    • deregisterMBean

      public void deregisterMBean(String name)
      Deregister an MBean from the MBeanServer
      Parameters:
      name - the mbean name

    • isOpen

      public boolean isOpen()
      Whether this Manager is not closed
      Returns:
      true if this Manager is open

    • close

      public void close()
      Close a instance.
      Throws:
      NucleusException - if the manager is closed

    • assertNotClosed

      private void assertNotClosed()
      Assert that this instance is open

    • startManagementServer

      private void startManagementServer()
      Start Management Server

    • stopManagementServer

      private void stopManagementServer()
      Shutdown Management Server