/*
* Copyright (c) 2008, 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 6610094 7024172
* @summary Basic unit test of ManagementFactory.getPlatformMXBean(s)
* methods and PlatformManagedObject.getObjectName()
* @author Mandy Chung
*
* @run main GetPlatformMXBeans
*/
import java.lang.management.*;
import java.io.IOException;
import java.util.*;
import javax.management.*;
import static java.lang.management.ManagementFactory.*;
public class GetPlatformMXBeans {
private static MBeanServer platformMBeanServer =
getPlatformMBeanServer();
public static void main(String[] argv) throws Exception {
// singleton platform MXBean
checkPlatformMXBean(getClassLoadingMXBean(),
ClassLoadingMXBean.class,
CLASS_LOADING_MXBEAN_NAME);
checkPlatformMXBean(getCompilationMXBean(),
CompilationMXBean.class,
COMPILATION_MXBEAN_NAME);
checkPlatformMXBean(getMemoryMXBean(),
MemoryMXBean.class,
MEMORY_MXBEAN_NAME);
checkPlatformMXBean(getOperatingSystemMXBean(),
OperatingSystemMXBean.class,
OPERATING_SYSTEM_MXBEAN_NAME);
checkPlatformMXBean(getRuntimeMXBean(),
RuntimeMXBean.class,
RUNTIME_MXBEAN_NAME);
checkPlatformMXBean(getThreadMXBean(),
ThreadMXBean.class,
THREAD_MXBEAN_NAME);
// the following MXBean can have more than one instances
checkGarbageCollectorMXBeans(getGarbageCollectorMXBeans());
checkMemoryManagerMXBeans(getMemoryManagerMXBeans());
checkMemoryPoolMXBeans(getMemoryPoolMXBeans());
// check invalid platform MXBean
checkInvalidPlatformMXBean();
}
private static <T extends PlatformManagedObject>
void checkPlatformMXBean(T obj, Class<T> mxbeanInterface,
String mxbeanName)
throws Exception
{
// getPlatformMXBean may return null if the mxbean is not implemented
PlatformManagedObject mxbean = getPlatformMXBean(mxbeanInterface);
if (obj != mxbean) {
throw new RuntimeException("Singleton MXBean returned not matched");
}
int numElements = obj == null ? 0 : 1;
List<? extends PlatformManagedObject> mxbeans =
getPlatformMXBeans(mxbeanInterface);
if (mxbeans.size() != numElements) {
throw new RuntimeException("Unmatched number of platform MXBeans "
+ mxbeans.size() + ". Expected = " + numElements);
}
if (obj != null) {
if (obj != mxbeans.get(0)) {
throw new RuntimeException("The list returned by getPlatformMXBeans"
+ " not matched");
}
ObjectName on = new ObjectName(mxbeanName);
if (!on.equals(mxbean.getObjectName())) {
throw new RuntimeException("Unmatched ObjectName " +
mxbean.getObjectName() + " Expected = " + on);
}
checkRemotePlatformMXBean(obj, platformMBeanServer,
mxbeanInterface, mxbeanName);
}
}
// verify platform MXBeans in the platform MBeanServer
private static <T extends PlatformManagedObject>
void checkRemotePlatformMXBean(T obj,
MBeanServerConnection mbs,
Class<T> mxbeanInterface,
String mxbeanName)
throws Exception
{
PlatformManagedObject mxbean = getPlatformMXBean(mbs, mxbeanInterface);
if ((obj == null && mxbean != null) || (obj != null && mxbean == null)) {
throw new RuntimeException("Singleton MXBean returned not matched");
}
int numElements = obj == null ? 0 : 1;
List<? extends PlatformManagedObject> mxbeans =
getPlatformMXBeans(mbs, mxbeanInterface);
if (mxbeans.size() != numElements) {
throw new RuntimeException("Unmatched number of platform MXBeans "
+ mxbeans.size() + ". Expected = " + numElements);
}
ObjectName on = new ObjectName(mxbeanName);
if (!on.equals(mxbean.getObjectName())) {
throw new RuntimeException("Unmatched ObjectName " +
mxbean.getObjectName() + " Expected = " + on);
}
}
private static void checkMemoryManagerMXBeans(List<MemoryManagerMXBean> objs)
throws Exception
{
checkPlatformMXBeans(objs, MemoryManagerMXBean.class);
for (MemoryManagerMXBean mxbean : objs) {
String domainAndType;
if (mxbean instanceof GarbageCollectorMXBean) {
domainAndType = GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE;
} else {
domainAndType = MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE;
}
ObjectName on = new ObjectName(domainAndType +
",name=" + mxbean.getName());
if (!on.equals(mxbean.getObjectName())) {
throw new RuntimeException("Unmatched ObjectName " +
mxbean.getObjectName() + " Expected = " + on);
}
}
}
private static void checkMemoryPoolMXBeans(List<MemoryPoolMXBean> objs)
throws Exception
{
checkPlatformMXBeans(objs, MemoryPoolMXBean.class);
for (MemoryPoolMXBean mxbean : objs) {
ObjectName on = new ObjectName(MEMORY_POOL_MXBEAN_DOMAIN_TYPE +
",name=" + mxbean.getName());
if (!on.equals(mxbean.getObjectName())) {
throw new RuntimeException("Unmatched ObjectName " +
mxbean.getObjectName() + " Expected = " + on);
}
}
}
private static void checkGarbageCollectorMXBeans(List<GarbageCollectorMXBean> objs)
throws Exception
{
checkPlatformMXBeans(objs, GarbageCollectorMXBean.class);
for (GarbageCollectorMXBean mxbean : objs) {
ObjectName on = new ObjectName(GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE +
",name=" + mxbean.getName());
if (!on.equals(mxbean.getObjectName())) {
throw new RuntimeException("Unmatched ObjectName " +
mxbean.getObjectName() + " Expected = " + on);
}
}
}
private static <T extends PlatformManagedObject>
void checkPlatformMXBeans(List<T> objs, Class<T> mxbeanInterface)
throws Exception
{
try {
getPlatformMXBean(mxbeanInterface);
// mxbeanInterface is not a singleton
throw new RuntimeException(mxbeanInterface + ": not a singleton MXBean");
} catch (IllegalArgumentException e) {
// expect IAE
}
// verify local list of platform MXBeans
List<? extends PlatformManagedObject> mxbeans =
getPlatformMXBeans(mxbeanInterface);
if (objs.size() != mxbeans.size()) {
throw new RuntimeException("Unmatched number of platform MXBeans "
+ mxbeans.size() + ". Expected = " + objs.size());
}
List<T> list = new ArrayList<T>(objs);
for (PlatformManagedObject pmo : mxbeans) {
if (list.contains(pmo)) {
list.remove(pmo);
} else {
throw new RuntimeException(pmo +
" not in the platform MXBean list");
}
}
if (!list.isEmpty()) {
throw new RuntimeException("The list returned by getPlatformMXBeans"
+ " not matched");
}
// verify platform MXBeans in the platform MBeanServer
mxbeans = getPlatformMXBeans(platformMBeanServer, mxbeanInterface);
if (objs.size() != mxbeans.size()) {
throw new RuntimeException("Unmatched number of platform MXBeans "
+ mxbeans.size() + ". Expected = " + objs.size());
}
}
interface FakeMXBean extends PlatformManagedObject {};
private static void checkInvalidPlatformMXBean() throws IOException {
try {
getPlatformMXBean(FakeMXBean.class);
// mxbeanInterface is not a singleton
throw new RuntimeException("Expect IllegalArgumentException but not thrown");
} catch (IllegalArgumentException e) {
// expect IAE
}
try {
getPlatformMXBeans(FakeMXBean.class);
// mxbeanInterface is not a singleton
throw new RuntimeException("Expect IllegalArgumentException but not thrown");
} catch (IllegalArgumentException e) {
// expect IAE
}
try {
getPlatformMXBean(platformMBeanServer, FakeMXBean.class);
// mxbeanInterface is not a singleton
throw new RuntimeException("Expect IllegalArgumentException but not thrown");
} catch (IllegalArgumentException e) {
// expect IAE
}
try {
getPlatformMXBeans(platformMBeanServer, FakeMXBean.class);
// mxbeanInterface is not a singleton
throw new RuntimeException("Expect IllegalArgumentException but not thrown");
} catch (IllegalArgumentException e) {
// expect IAE
}
}
}