1 /*
2 * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 6610094 7024172
27 * @summary Basic unit test of ManagementFactory.getPlatformMXBean(s)
28 * methods and PlatformManagedObject.getObjectName()
29 * @author Mandy Chung
30 *
31 * @run main GetPlatformMXBeans
32 */
33
34 import java.lang.management.*;
35 import java.io.IOException;
36 import java.util.*;
37 import javax.management.*;
38
39 import static java.lang.management.ManagementFactory.*;
40
41 public class GetPlatformMXBeans {
42 private static MBeanServer platformMBeanServer =
43 getPlatformMBeanServer();
44 public static void main(String[] argv) throws Exception {
45 // singleton platform MXBean
46 checkPlatformMXBean(getClassLoadingMXBean(),
47 ClassLoadingMXBean.class,
48 CLASS_LOADING_MXBEAN_NAME);
49 checkPlatformMXBean(getCompilationMXBean(),
50 CompilationMXBean.class,
51 COMPILATION_MXBEAN_NAME);
52 checkPlatformMXBean(getMemoryMXBean(),
53 MemoryMXBean.class,
54 MEMORY_MXBEAN_NAME);
55 checkPlatformMXBean(getOperatingSystemMXBean(),
56 OperatingSystemMXBean.class,
57 OPERATING_SYSTEM_MXBEAN_NAME);
58 checkPlatformMXBean(getRuntimeMXBean(),
59 RuntimeMXBean.class,
60 RUNTIME_MXBEAN_NAME);
61 checkPlatformMXBean(getThreadMXBean(),
62 ThreadMXBean.class,
63 THREAD_MXBEAN_NAME);
64
65 // the following MXBean can have more than one instances
66 checkGarbageCollectorMXBeans(getGarbageCollectorMXBeans());
67 checkMemoryManagerMXBeans(getMemoryManagerMXBeans());
68 checkMemoryPoolMXBeans(getMemoryPoolMXBeans());
69
70 // check invalid platform MXBean
71 checkInvalidPlatformMXBean();
72 }
73
74 private static <T extends PlatformManagedObject>
75 void checkPlatformMXBean(T obj, Class<T> mxbeanInterface,
76 String mxbeanName)
77 throws Exception
78 {
79 // getPlatformMXBean may return null if the mxbean is not implemented
80 PlatformManagedObject mxbean = getPlatformMXBean(mxbeanInterface);
81 if (obj != mxbean) {
82 throw new RuntimeException("Singleton MXBean returned not matched");
83 }
84
85 int numElements = obj == null ? 0 : 1;
86 List<? extends PlatformManagedObject> mxbeans =
87 getPlatformMXBeans(mxbeanInterface);
88 if (mxbeans.size() != numElements) {
89 throw new RuntimeException("Unmatched number of platform MXBeans "
90 + mxbeans.size() + ". Expected = " + numElements);
91 }
92
93 if (obj != null) {
94 if (obj != mxbeans.get(0)) {
95 throw new RuntimeException("The list returned by getPlatformMXBeans"
96 + " not matched");
97 }
98 ObjectName on = new ObjectName(mxbeanName);
99 if (!on.equals(mxbean.getObjectName())) {
100 throw new RuntimeException("Unmatched ObjectName " +
101 mxbean.getObjectName() + " Expected = " + on);
102 }
103 checkRemotePlatformMXBean(obj, platformMBeanServer,
104 mxbeanInterface, mxbeanName);
105 }
106 }
107
108 // verify platform MXBeans in the platform MBeanServer
109 private static <T extends PlatformManagedObject>
110 void checkRemotePlatformMXBean(T obj,
111 MBeanServerConnection mbs,
112 Class<T> mxbeanInterface,
113 String mxbeanName)
114 throws Exception
115 {
116 PlatformManagedObject mxbean = getPlatformMXBean(mbs, mxbeanInterface);
117 if ((obj == null && mxbean != null) || (obj != null && mxbean == null)) {
118 throw new RuntimeException("Singleton MXBean returned not matched");
119 }
120
121 int numElements = obj == null ? 0 : 1;
122 List<? extends PlatformManagedObject> mxbeans =
123 getPlatformMXBeans(mbs, mxbeanInterface);
124 if (mxbeans.size() != numElements) {
125 throw new RuntimeException("Unmatched number of platform MXBeans "
126 + mxbeans.size() + ". Expected = " + numElements);
127 }
128
129 ObjectName on = new ObjectName(mxbeanName);
130 if (!on.equals(mxbean.getObjectName())) {
131 throw new RuntimeException("Unmatched ObjectName " +
132 mxbean.getObjectName() + " Expected = " + on);
133 }
134 }
135
136 private static void checkMemoryManagerMXBeans(List<MemoryManagerMXBean> objs)
137 throws Exception
138 {
139 checkPlatformMXBeans(objs, MemoryManagerMXBean.class);
140 for (MemoryManagerMXBean mxbean : objs) {
141 String domainAndType;
142 if (mxbean instanceof GarbageCollectorMXBean) {
143 domainAndType = GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE;
144 } else {
145 domainAndType = MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE;
146 }
147 ObjectName on = new ObjectName(domainAndType +
148 ",name=" + mxbean.getName());
149 if (!on.equals(mxbean.getObjectName())) {
150 throw new RuntimeException("Unmatched ObjectName " +
151 mxbean.getObjectName() + " Expected = " + on);
152 }
153 }
154 }
155 private static void checkMemoryPoolMXBeans(List<MemoryPoolMXBean> objs)
156 throws Exception
157 {
158 checkPlatformMXBeans(objs, MemoryPoolMXBean.class);
159 for (MemoryPoolMXBean mxbean : objs) {
160 ObjectName on = new ObjectName(MEMORY_POOL_MXBEAN_DOMAIN_TYPE +
161 ",name=" + mxbean.getName());
162 if (!on.equals(mxbean.getObjectName())) {
163 throw new RuntimeException("Unmatched ObjectName " +
164 mxbean.getObjectName() + " Expected = " + on);
165 }
166 }
167 }
168
169 private static void checkGarbageCollectorMXBeans(List<GarbageCollectorMXBean> objs)
170 throws Exception
171 {
172 checkPlatformMXBeans(objs, GarbageCollectorMXBean.class);
173 for (GarbageCollectorMXBean mxbean : objs) {
174 ObjectName on = new ObjectName(GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE +
175 ",name=" + mxbean.getName());
176 if (!on.equals(mxbean.getObjectName())) {
177 throw new RuntimeException("Unmatched ObjectName " +
178 mxbean.getObjectName() + " Expected = " + on);
179 }
180 }
181 }
182
183 private static <T extends PlatformManagedObject>
184 void checkPlatformMXBeans(List<T> objs, Class<T> mxbeanInterface)
185 throws Exception
186 {
187 try {
188 getPlatformMXBean(mxbeanInterface);
189 // mxbeanInterface is not a singleton
190 throw new RuntimeException(mxbeanInterface + ": not a singleton MXBean");
191 } catch (IllegalArgumentException e) {
192 // expect IAE
193 }
194
195 // verify local list of platform MXBeans
196 List<? extends PlatformManagedObject> mxbeans =
197 getPlatformMXBeans(mxbeanInterface);
198 if (objs.size() != mxbeans.size()) {
199 throw new RuntimeException("Unmatched number of platform MXBeans "
200 + mxbeans.size() + ". Expected = " + objs.size());
201 }
202 List<T> list = new ArrayList<T>(objs);
203 for (PlatformManagedObject pmo : mxbeans) {
204 if (list.contains(pmo)) {
205 list.remove(pmo);
206 } else {
207 throw new RuntimeException(pmo +
208 " not in the platform MXBean list");
209 }
210 }
211
212 if (!list.isEmpty()) {
213 throw new RuntimeException("The list returned by getPlatformMXBeans"
214 + " not matched");
215 }
216
217 // verify platform MXBeans in the platform MBeanServer
218 mxbeans = getPlatformMXBeans(platformMBeanServer, mxbeanInterface);
219 if (objs.size() != mxbeans.size()) {
220 throw new RuntimeException("Unmatched number of platform MXBeans "
221 + mxbeans.size() + ". Expected = " + objs.size());
222 }
223 }
224
225 interface FakeMXBean extends PlatformManagedObject {};
226
227 private static void checkInvalidPlatformMXBean() throws IOException {
228 try {
229 getPlatformMXBean(FakeMXBean.class);
230 // mxbeanInterface is not a singleton
231 throw new RuntimeException("Expect IllegalArgumentException but not thrown");
232 } catch (IllegalArgumentException e) {
233 // expect IAE
234 }
235
236 try {
237 getPlatformMXBeans(FakeMXBean.class);
238 // mxbeanInterface is not a singleton
239 throw new RuntimeException("Expect IllegalArgumentException but not thrown");
240 } catch (IllegalArgumentException e) {
241 // expect IAE
242 }
243
244 try {
245 getPlatformMXBean(platformMBeanServer, FakeMXBean.class);
246 // mxbeanInterface is not a singleton
247 throw new RuntimeException("Expect IllegalArgumentException but not thrown");
248 } catch (IllegalArgumentException e) {
249 // expect IAE
250 }
251
252 try {
253 getPlatformMXBeans(platformMBeanServer, FakeMXBean.class);
254 // mxbeanInterface is not a singleton
255 throw new RuntimeException("Expect IllegalArgumentException but not thrown");
256 } catch (IllegalArgumentException e) {
257 // expect IAE
258 }
259 }
260 }