| /* |
| * Copyright (c) 2005, 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 com.sun.jmx.mbeanserver; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Type; |
| import java.util.WeakHashMap; |
| import javax.management.Descriptor; |
| import javax.management.ImmutableDescriptor; |
| import javax.management.IntrospectionException; |
| import javax.management.MBeanAttributeInfo; |
| import javax.management.MBeanException; |
| import javax.management.MBeanOperationInfo; |
| import javax.management.NotCompliantMBeanException; |
| import javax.management.NotificationBroadcaster; |
| import javax.management.NotificationBroadcasterSupport; |
| import sun.reflect.misc.MethodUtil; |
| |
| /** |
| * @since 1.6 |
| */ |
| class StandardMBeanIntrospector extends MBeanIntrospector<Method> { |
| private static final StandardMBeanIntrospector instance = |
| new StandardMBeanIntrospector(); |
| |
| static StandardMBeanIntrospector getInstance() { |
| return instance; |
| } |
| |
| @Override |
| PerInterfaceMap<Method> getPerInterfaceMap() { |
| return perInterfaceMap; |
| } |
| |
| @Override |
| MBeanInfoMap getMBeanInfoMap() { |
| return mbeanInfoMap; |
| } |
| |
| @Override |
| MBeanAnalyzer<Method> getAnalyzer(Class<?> mbeanInterface) |
| throws NotCompliantMBeanException { |
| return MBeanAnalyzer.analyzer(mbeanInterface, this); |
| } |
| |
| @Override |
| boolean isMXBean() { |
| return false; |
| } |
| |
| @Override |
| Method mFrom(Method m) { |
| return m; |
| } |
| |
| @Override |
| String getName(Method m) { |
| return m.getName(); |
| } |
| |
| @Override |
| Type getGenericReturnType(Method m) { |
| return m.getGenericReturnType(); |
| } |
| |
| @Override |
| Type[] getGenericParameterTypes(Method m) { |
| return m.getGenericParameterTypes(); |
| } |
| |
| @Override |
| String[] getSignature(Method m) { |
| Class<?>[] params = m.getParameterTypes(); |
| String[] sig = new String[params.length]; |
| for (int i = 0; i < params.length; i++) |
| sig[i] = params[i].getName(); |
| return sig; |
| } |
| |
| @Override |
| void checkMethod(Method m) { |
| } |
| |
| @Override |
| Object invokeM2(Method m, Object target, Object[] args, Object cookie) |
| throws InvocationTargetException, IllegalAccessException, |
| MBeanException { |
| return MethodUtil.invoke(m, target, args); |
| } |
| |
| @Override |
| boolean validParameter(Method m, Object value, int paramNo, Object cookie) { |
| return isValidParameter(m, value, paramNo); |
| } |
| |
| @Override |
| MBeanAttributeInfo getMBeanAttributeInfo(String attributeName, |
| Method getter, Method setter) { |
| |
| final String description = "Attribute exposed for management"; |
| try { |
| return new MBeanAttributeInfo(attributeName, description, |
| getter, setter); |
| } catch (IntrospectionException e) { |
| throw new RuntimeException(e); // should not happen |
| } |
| } |
| |
| @Override |
| MBeanOperationInfo getMBeanOperationInfo(String operationName, |
| Method operation) { |
| final String description = "Operation exposed for management"; |
| return new MBeanOperationInfo(description, operation); |
| } |
| |
| @Override |
| Descriptor getBasicMBeanDescriptor() { |
| /* We don't bother saying mxbean=false, and we can't know whether |
| the info is immutable until we know whether the MBean class |
| (not interface) is a NotificationBroadcaster. */ |
| return ImmutableDescriptor.EMPTY_DESCRIPTOR; |
| } |
| |
| @Override |
| Descriptor getMBeanDescriptor(Class<?> resourceClass) { |
| boolean immutable = isDefinitelyImmutableInfo(resourceClass); |
| return new ImmutableDescriptor("mxbean=false", |
| "immutableInfo=" + immutable); |
| } |
| |
| /* Return true if and only if we can be sure that the given MBean implementation |
| * class has immutable MBeanInfo. A Standard MBean that is a |
| * NotificationBroadcaster is allowed to return different values at |
| * different times from its getNotificationInfo() method, which is when |
| * we might not know if it is immutable. But if it is a subclass of |
| * NotificationBroadcasterSupport and does not override |
| * getNotificationInfo(), then we know it won't change. |
| */ |
| static boolean isDefinitelyImmutableInfo(Class<?> implClass) { |
| if (!NotificationBroadcaster.class.isAssignableFrom(implClass)) |
| return true; |
| synchronized (definitelyImmutable) { |
| Boolean immutable = definitelyImmutable.get(implClass); |
| if (immutable == null) { |
| final Class<NotificationBroadcasterSupport> nbs = |
| NotificationBroadcasterSupport.class; |
| if (nbs.isAssignableFrom(implClass)) { |
| try { |
| Method m = implClass.getMethod("getNotificationInfo"); |
| immutable = (m.getDeclaringClass() == nbs); |
| } catch (Exception e) { |
| // Too bad, we'll say no for now. |
| return false; |
| } |
| } else |
| immutable = false; |
| definitelyImmutable.put(implClass, immutable); |
| } |
| return immutable; |
| } |
| } |
| private static final WeakHashMap<Class<?>, Boolean> definitelyImmutable = |
| new WeakHashMap<Class<?>, Boolean>(); |
| |
| private static final PerInterfaceMap<Method> |
| perInterfaceMap = new PerInterfaceMap<Method>(); |
| |
| private static final MBeanInfoMap mbeanInfoMap = new MBeanInfoMap(); |
| } |