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 * @modules jdk.management
32 * @run main GetPlatformMXBeans
33 */
34
35 import java.lang.management.*;
36 import java.io.IOException;
37 import java.util.*;
38 import javax.management.*;
39
40 import static java.lang.management.ManagementFactory.*;
41
42 public class GetPlatformMXBeans {
43 private static MBeanServer platformMBeanServer =
44 getPlatformMBeanServer();
45 public static void main(String[] argv) throws Exception {
46 // singleton platform MXBean
47 checkPlatformMXBean(getClassLoadingMXBean(),
48 ClassLoadingMXBean.class,
49 CLASS_LOADING_MXBEAN_NAME);
50 checkPlatformMXBean(getCompilationMXBean(),
51 CompilationMXBean.class,
52 COMPILATION_MXBEAN_NAME);
53 checkPlatformMXBean(getMemoryMXBean(),
54 MemoryMXBean.class,
55 MEMORY_MXBEAN_NAME);
56 checkPlatformMXBean(getOperatingSystemMXBean(),
57 OperatingSystemMXBean.class,
58 OPERATING_SYSTEM_MXBEAN_NAME);
59 checkPlatformMXBean(getRuntimeMXBean(),
60 RuntimeMXBean.class,
61 RUNTIME_MXBEAN_NAME);
62 checkPlatformMXBean(getThreadMXBean(),
63 ThreadMXBean.class,
64 THREAD_MXBEAN_NAME);
65
66 // the following MXBean can have more than one instances
67 checkGarbageCollectorMXBeans(getGarbageCollectorMXBeans());
68 checkMemoryManagerMXBeans(getMemoryManagerMXBeans());
69 checkMemoryPoolMXBeans(getMemoryPoolMXBeans());
70
71 // check invalid platform MXBean
72 checkInvalidPlatformMXBean();
73 }
74
75 private static <T extends PlatformManagedObject>
76 void checkPlatformMXBean(T obj, Class<T> mxbeanInterface,
77 String mxbeanName)
78 throws Exception
79 {
80 // getPlatformMXBean may return null if the mxbean is not implemented
81 PlatformManagedObject mxbean = getPlatformMXBean(mxbeanInterface);
82 if (obj != mxbean) {
83 throw new RuntimeException("Singleton MXBean returned not matched");
84 }
85
86 int numElements = obj == null ? 0 : 1;
87 List<? extends PlatformManagedObject> mxbeans =
88 getPlatformMXBeans(mxbeanInterface);
89 if (mxbeans.size() != numElements) {
90 throw new RuntimeException("Unmatched number of platform MXBeans "
91 + mxbeans.size() + ". Expected = " + numElements);
92 }
93
94 if (obj != null) {
95 if (obj != mxbeans.get(0)) {
96 throw new RuntimeException("The list returned by getPlatformMXBeans"
97 + " not matched");
98 }
99 ObjectName on = new ObjectName(mxbeanName);
100 if (!on.equals(mxbean.getObjectName())) {
101 throw new RuntimeException("Unmatched ObjectName " +
102 mxbean.getObjectName() + " Expected = " + on);
103 }
104 checkRemotePlatformMXBean(obj, platformMBeanServer,
105 mxbeanInterface, mxbeanName);
106 }
107 }
108
109 // verify platform MXBeans in the platform MBeanServer
110 private static <T extends PlatformManagedObject>
111 void checkRemotePlatformMXBean(T obj,
112 MBeanServerConnection mbs,
113 Class<T> mxbeanInterface,
114 String mxbeanName)
115 throws Exception
116 {
117 PlatformManagedObject mxbean = getPlatformMXBean(mbs, mxbeanInterface);
118 if ((obj == null && mxbean != null) || (obj != null && mxbean == null)) {
119 throw new RuntimeException("Singleton MXBean returned not matched");
120 }
121
122 int numElements = obj == null ? 0 : 1;
123 List<? extends PlatformManagedObject> mxbeans =
124 getPlatformMXBeans(mbs, mxbeanInterface);
125 if (mxbeans.size() != numElements) {
126 throw new RuntimeException("Unmatched number of platform MXBeans "
127 + mxbeans.size() + ". Expected = " + numElements);
128 }
129
130 ObjectName on = new ObjectName(mxbeanName);
131 if (!on.equals(mxbean.getObjectName())) {
132 throw new RuntimeException("Unmatched ObjectName " +
133 mxbean.getObjectName() + " Expected = " + on);
134 }
135 }
136
137 private static void checkMemoryManagerMXBeans(List<MemoryManagerMXBean> objs)
138 throws Exception
139 {
140 checkPlatformMXBeans(objs, MemoryManagerMXBean.class);
141 for (MemoryManagerMXBean mxbean : objs) {
142 String domainAndType;
143 if (mxbean instanceof GarbageCollectorMXBean) {
144 domainAndType = GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE;
145 } else {
146 domainAndType = MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE;
147 }
148 ObjectName on = new ObjectName(domainAndType +
149 ",name=" + mxbean.getName());
150 if (!on.equals(mxbean.getObjectName())) {
151 throw new RuntimeException("Unmatched ObjectName " +
152 mxbean.getObjectName() + " Expected = " + on);
153 }
154 }
155 }
156 private static void checkMemoryPoolMXBeans(List<MemoryPoolMXBean> objs)
157 throws Exception
158 {
159 checkPlatformMXBeans(objs, MemoryPoolMXBean.class);
160 for (MemoryPoolMXBean mxbean : objs) {
161 ObjectName on = new ObjectName(MEMORY_POOL_MXBEAN_DOMAIN_TYPE +
162 ",name=" + mxbean.getName());
163 if (!on.equals(mxbean.getObjectName())) {
164 throw new RuntimeException("Unmatched ObjectName " +
165 mxbean.getObjectName() + " Expected = " + on);
166 }
167 }
168 }
169
170 private static void checkGarbageCollectorMXBeans(List<GarbageCollectorMXBean> objs)
171 throws Exception
172 {
173 checkPlatformMXBeans(objs, GarbageCollectorMXBean.class);
174 for (GarbageCollectorMXBean mxbean : objs) {
175 ObjectName on = new ObjectName(GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE +
176 ",name=" + mxbean.getName());
177 if (!on.equals(mxbean.getObjectName())) {
178 throw new RuntimeException("Unmatched ObjectName " +
179 mxbean.getObjectName() + " Expected = " + on);
180 }
181 }
182 }
183
184 private static <T extends PlatformManagedObject>
185 void checkPlatformMXBeans(List<T> objs, Class<T> mxbeanInterface)
186 throws Exception
187 {
188 try {
189 getPlatformMXBean(mxbeanInterface);
190 // mxbeanInterface is not a singleton
191 throw new RuntimeException(mxbeanInterface + ": not a singleton MXBean");
192 } catch (IllegalArgumentException e) {
193 // expect IAE
194 }
195
196 // verify local list of platform MXBeans
197 List<? extends PlatformManagedObject> mxbeans =
198 getPlatformMXBeans(mxbeanInterface);
199 if (objs.size() != mxbeans.size()) {
200 throw new RuntimeException("Unmatched number of platform MXBeans "
201 + mxbeans.size() + ". Expected = " + objs.size());
202 }
203 List<T> list = new ArrayList<T>(objs);
204 for (PlatformManagedObject pmo : mxbeans) {
205 if (list.contains(pmo)) {
206 list.remove(pmo);
207 } else {
208 throw new RuntimeException(pmo +
209 " not in the platform MXBean list");
210 }
211 }
212
213 if (!list.isEmpty()) {
214 throw new RuntimeException("The list returned by getPlatformMXBeans"
215 + " not matched");
216 }
217
218 // verify platform MXBeans in the platform MBeanServer
219 mxbeans = getPlatformMXBeans(platformMBeanServer, mxbeanInterface);
220 if (objs.size() != mxbeans.size()) {
221 throw new RuntimeException("Unmatched number of platform MXBeans "
222 + mxbeans.size() + ". Expected = " + objs.size());
223 }
224 }
225
226 interface FakeMXBean extends PlatformManagedObject {};
227
228 private static void checkInvalidPlatformMXBean() throws IOException {
229 try {
230 getPlatformMXBean(FakeMXBean.class);
231 // mxbeanInterface is not a singleton
232 throw new RuntimeException("Expect IllegalArgumentException but not thrown");
233 } catch (IllegalArgumentException e) {
234 // expect IAE
235 }
236
237 try {
238 getPlatformMXBeans(FakeMXBean.class);
239 // mxbeanInterface is not a singleton
240 throw new RuntimeException("Expect IllegalArgumentException but not thrown");
241 } catch (IllegalArgumentException e) {
242 // expect IAE
243 }
244
245 try {
246 getPlatformMXBean(platformMBeanServer, FakeMXBean.class);
247 // mxbeanInterface is not a singleton
248 throw new RuntimeException("Expect IllegalArgumentException but not thrown");
249 } catch (IllegalArgumentException e) {
250 // expect IAE
251 }
252
253 try {
254 getPlatformMXBeans(platformMBeanServer, FakeMXBean.class);
255 // mxbeanInterface is not a singleton
256 throw new RuntimeException("Expect IllegalArgumentException but not thrown");
257 } catch (IllegalArgumentException e) {
258 // expect IAE
259 }
260 }
261 }