| /* |
| * Copyright (c) 2005, 2016, 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. |
| * |
| * 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 6320211 |
| * @summary Check that java.lang.management MXBeans have the same behavior |
| * as user MXBeans |
| * @author Eamonn McManus |
| * @modules jdk.management |
| * @run main/othervm MXBeanBehavior |
| */ |
| |
| import java.lang.management.*; |
| import java.lang.reflect.*; |
| import java.util.*; |
| import javax.management.*; |
| |
| public class MXBeanBehavior { |
| // Exclude list: list of platform MBeans that are not MXBeans |
| public static final HashSet<String> excludeList = new HashSet<>( |
| Arrays.asList("com.sun.management:type=DiagnosticCommand")); |
| |
| public static void main(String[] args) throws Exception { |
| MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); |
| |
| /* Test that all the MBeans in the java.* and com.sun.management* |
| domains are MXBeans with the appropriate behavior. */ |
| Set<ObjectName> names = mbs.queryNames(new ObjectName("java.*:*"), |
| null); |
| names.addAll(mbs.queryNames(new ObjectName("com.sun.management*:*"), |
| null)); |
| for (ObjectName name : names) |
| test(mbs, name); |
| |
| /* Now do some rudimentary testing of inter-MXBean references. |
| It should be possible for a user MXBean to return e.g. the |
| CompilationMXBean from the platform from an attribute of |
| type CompilationMXBean, and have the MXBean infrastructure |
| map this into that MXBean's standard ObjectName. It should |
| also be possible for a proxy for this user MXBean to have |
| this attribute's value mapped back into a CompilationMXBean |
| instance, which however will be another proxy rather than |
| the original object. Finally, it should be possible to set |
| the attribute in the user's MXBean through a proxy, giving |
| the real CompilationMXBean as an argument, and have this be |
| translated into that MXBean's standard ObjectName. The |
| user's MXBean will receive a proxy in this case, though we |
| don't check that. */ |
| ObjectName refName = new ObjectName("d:type=CompilationRef"); |
| mbs.registerMBean(new CompilationImpl(), refName); |
| CompilationRefMXBean refProxy = |
| JMX.newMXBeanProxy(mbs, refName, CompilationRefMXBean.class); |
| refProxy.getCompilationMXBean(); |
| refProxy.setCompilationMXBean(ManagementFactory.getCompilationMXBean()); |
| ObjectName on = |
| (ObjectName) mbs.getAttribute(refName, "CompilationMXBean"); |
| checkEqual(on, new ObjectName(ManagementFactory.COMPILATION_MXBEAN_NAME), |
| "Referenced object name"); |
| mbs.setAttribute(refName, new Attribute("CompilationMXBean", on)); |
| |
| System.out.println("TEST PASSED"); |
| } |
| |
| /* Check the behavior of this MXBean to ensure that it conforms to |
| what is expected of all MXBeans as detailed in |
| javax.management.MXBean. Its MBeanInfo should have a |
| Descriptor with the fields mxbean and interfaceClassName, and |
| furthermore we know that our implementation sets immutableInfo |
| here. Each attribute should have Descriptor with the fields |
| openType and originalType that have appropriate values. We |
| don't currently check operations though the same considerations |
| would apply there. (If the MBeanInfo and MBeanAttributeInfo |
| tests pass we can reasonably suppose that this MXBean will |
| behave the same as all other MXBeans, so MBeanOperationInfo, |
| MBeanNotificationInfo, and MBeanConstructorInfo will be covered |
| by generic MXBean tests. |
| */ |
| private static void test(MBeanServer mbs, ObjectName name) throws Exception { |
| if(excludeList.contains(name.getCanonicalName())) { |
| // Skipping not MXBean objects. |
| return; |
| } |
| System.out.println("Testing: " + name); |
| |
| MBeanInfo mbi = mbs.getMBeanInfo(name); |
| Descriptor mbid = mbi.getDescriptor(); |
| Object[] values = mbid.getFieldValues("immutableInfo", |
| "interfaceClassName", |
| "mxbean"); |
| checkEqual(values[0], "true", name + " immutableInfo field"); |
| checkEqual(values[2], "true", name + " mxbean field"); |
| String interfaceClassName = (String) values[1]; |
| if (!mbs.isInstanceOf(name, interfaceClassName)) { |
| throw new RuntimeException(name + " not instance of " + |
| interfaceClassName); |
| } |
| Class interfaceClass = Class.forName(interfaceClassName); |
| for (MBeanAttributeInfo mbai : mbi.getAttributes()) { |
| Descriptor mbaid = mbai.getDescriptor(); |
| Object[] avalues = mbaid.getFieldValues("openType", |
| "originalType"); |
| if (avalues[0] == null || avalues[1] == null) { |
| throw new RuntimeException("Null attribute descriptor fields: " + |
| Arrays.toString(avalues)); |
| } |
| if (mbai.isReadable()) { |
| String mname = (mbai.isIs() ? "is" : "get") + mbai.getName(); |
| Method m = interfaceClass.getMethod(mname); |
| Type t = m.getGenericReturnType(); |
| String ret = |
| (t instanceof Class) ? ((Class) t).getName() : t.toString(); |
| if (!ret.equals(avalues[1])) { |
| final String msg = |
| name + " attribute " + mbai.getName() + " has wrong " + |
| "originalType: " + avalues[1] + " vs " + ret; |
| throw new RuntimeException(msg); |
| } |
| } |
| } |
| } |
| |
| private static void checkEqual(Object x, Object y, String what) { |
| final boolean eq; |
| if (x == y) |
| eq = true; |
| else if (x == null) |
| eq = false; |
| else |
| eq = x.equals(y); |
| if (!eq) |
| throw new RuntimeException(what + " should be " + y + ", is " + x); |
| } |
| |
| public static interface CompilationRefMXBean { |
| public CompilationMXBean getCompilationMXBean(); |
| public void setCompilationMXBean(CompilationMXBean mxb); |
| } |
| |
| public static class CompilationImpl implements CompilationRefMXBean { |
| public CompilationMXBean getCompilationMXBean() { |
| return ManagementFactory.getCompilationMXBean(); |
| } |
| |
| public void setCompilationMXBean(CompilationMXBean mxb) { |
| if (mxb == ManagementFactory.getCompilationMXBean()) |
| return; |
| MBeanServerInvocationHandler mbsih = (MBeanServerInvocationHandler) |
| Proxy.getInvocationHandler(mxb); |
| ObjectName expectedName; |
| try { |
| expectedName = |
| new ObjectName(ManagementFactory.COMPILATION_MXBEAN_NAME); |
| } catch (MalformedObjectNameException e) { |
| throw new RuntimeException(e); |
| } |
| checkEqual(mbsih.getObjectName(), expectedName, |
| "Proxy name in setCompilationMXBean"); |
| } |
| } |
| } |