| /* |
| * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.management.jfr.internal; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.Callable; |
| |
| import jdk.jfr.internal.management.ManagementSupport; |
| import jdk.management.jfr.FlightRecorderMXBean; |
| import jdk.management.jfr.SettingDescriptorInfo; |
| import sun.management.spi.PlatformMBeanProvider; |
| |
| public final class FlightRecorderMXBeanProvider extends PlatformMBeanProvider { |
| |
| private final static class SingleMBeanComponent |
| implements PlatformComponent<FlightRecorderMXBean> { |
| private final String objectName; |
| private final Class<FlightRecorderMXBean> mbeanInterface; |
| |
| public SingleMBeanComponent(String objectName, |
| Class<FlightRecorderMXBean> mbeanInterface) { |
| this.objectName = objectName; |
| this.mbeanInterface = mbeanInterface; |
| } |
| |
| @Override |
| public Set<String> mbeanInterfaceNames() { |
| return Collections.singleton(mbeanInterface.getName()); |
| } |
| |
| @Override |
| public Map<String, FlightRecorderMXBean> nameToMBeanMap() { |
| FlightRecorderMXBean bean = getFlightRecorderMXBean(); |
| if (bean != null) { |
| return Collections.singletonMap(objectName, bean); |
| } else { |
| return Collections.emptyMap(); |
| } |
| } |
| |
| @Override |
| public String getObjectNamePattern() { |
| return objectName; |
| } |
| |
| @Override |
| public Set<Class<? extends FlightRecorderMXBean>> mbeanInterfaces() { |
| return Collections.singleton(mbeanInterface); |
| } |
| } |
| |
| private static Callable<FlightRecorderMXBean> flightRecorderMXBeanFactory; |
| |
| private static volatile FlightRecorderMXBean flightRecorderMXBean; |
| |
| private static FlightRecorderMXBean getFlightRecorderMXBean() { |
| FlightRecorderMXBean bean = flightRecorderMXBean; |
| if (bean == null) { |
| SettingDescriptorInfo.from(null); // Sets flightRecorderMXBeanFactory under <clinit> lock |
| synchronized (flightRecorderMXBeanFactory) { |
| bean = flightRecorderMXBean; |
| if (bean != null) { |
| return bean; |
| } |
| try { |
| bean = flightRecorderMXBean = flightRecorderMXBeanFactory.call(); |
| } catch (Exception e) { |
| ManagementSupport.logError("Could not create Flight Recorder " |
| + "instance for MBeanServer. " + e.getMessage()); |
| } |
| } |
| } |
| return bean; |
| } |
| |
| public static void setFlightRecorderMXBeanFactory(Callable<FlightRecorderMXBean> factory) { |
| flightRecorderMXBeanFactory = factory; |
| } |
| |
| @Override |
| public List<PlatformComponent<?>> getPlatformComponentList() { |
| String objectName = FlightRecorderMXBean.MXBEAN_NAME; |
| Class<FlightRecorderMXBean> mbeanInterface = FlightRecorderMXBean.class; |
| return Collections.singletonList(new SingleMBeanComponent(objectName, mbeanInterface)); |
| } |
| } |