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src/share/classes/sun/management/ExtendedPlatformComponent.java

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   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.management;
  27 


  28 import java.util.Collections;
  29 import java.util.List;
  30 import java.lang.management.PlatformManagedObject;

  31 
  32 /**
  33  * Class to allow for an extended set of platform MXBeans
  34  */
  35 public final class ExtendedPlatformComponent {
  36     private ExtendedPlatformComponent() {} // Don't create any instances
  37 
  38     /**
  39      * Get the extended set of platform MXBeans that should be registered in the
  40      * platform MBeanServer, or an empty list if there are no such MXBeans.
  41      */
  42     public static List<? extends PlatformManagedObject> getMXBeans() {
  43         return Collections.emptyList();





  44     }
  45 
  46     /**
  47      * Returns the extended platform MXBean implementing the given
  48      * mxbeanInterface, or null if there is no such MXBean.
  49      */
  50     public static <T extends PlatformManagedObject>
  51             T getMXBean(Class<T> mxbeanInterface) {




  52         return null;













  53     }
  54 }


   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.management;
  27 
  28 import java.lang.reflect.InvocationTargetException;
  29 import java.util.Collection;
  30 import java.util.Collections;
  31 import java.util.List;
  32 import java.lang.management.PlatformManagedObject;
  33 import java.lang.reflect.Method;
  34 
  35 /**
  36  * Class to allow for an extended set of platform MXBeans
  37  */
  38 public final class ExtendedPlatformComponent {
  39     private ExtendedPlatformComponent() {} // Don't create any instances
  40 
  41     /**
  42      * Get the extended set of platform MXBeans that should be registered in the
  43      * platform MBeanServer, or an empty list if there are no such MXBeans.
  44      */
  45     public static List<? extends PlatformManagedObject> getMXBeans() {
  46         PlatformManagedObject o = getFlightRecorderBean();
  47         if (o != null) {
  48             return Collections.singletonList(o);
  49         } else {
  50             return Collections.emptyList();
  51         }
  52     }
  53 
  54     /**
  55      * Returns the extended platform MXBean implementing the given
  56      * mxbeanInterface, or null if there is no such MXBean.
  57      */
  58     public static <T extends PlatformManagedObject>
  59             T getMXBean(Class<T> mxbeanInterface) {
  60 
  61         if ("jdk.management.jfr.FlightRecorderMXBean".equals(mxbeanInterface.getName())) {
  62             return (T)getFlightRecorderBean();
  63         }
  64         return null;
  65     }
  66 
  67     private static PlatformManagedObject getFlightRecorderBean() {
  68         PlatformManagedObject object = null;
  69         try {
  70             Class provider = Class.forName("jdk.management.jfr.internal.FlightRecorderMXBeanProvider");
  71             Method m = provider.getDeclaredMethod("getFlightRecorderMXBean");
  72 
  73             object =  (PlatformManagedObject)m.invoke(null);
  74         } catch (ClassNotFoundException | NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
  75             // no jfr?
  76         }
  77         return object;
  78     }
  79 }
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