1 /*
2 * Copyright 2003-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
23
24 /*
25 * @test
26 * @bug 4947536
27 * @summary Basic unit test of ManagementFactory.getPlatformMBeanServer()
28 * @author Mandy Chung
29 *
30 * @compile -source 1.5 PlatformMBeanServerTest.java
31 * @run main PlatformMBeanServerTest
32 */
33
34 import java.lang.management.*;
35 import static java.lang.management.ManagementFactory.*;
36 import java.util.*;
37 import java.util.logging.LogManager;
38
39 import javax.management.MBeanServer;
40 import javax.management.ObjectName;
41
42 public class PlatformMBeanServerTest {
43 public static void main(String[] argv) throws Exception {
44 MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
45 printMBeans(mbs);
46
47 // validate if all standard JVM MBeans are registered
48 checkStandardMBeans(mbs);
49
50 // validate if all platform MBeans are registered
51 checkPlatformMBeans(mbs);
52
53 MBeanServer mbs1 = ManagementFactory.getPlatformMBeanServer();
54 if (mbs != mbs1) {
55 throw new RuntimeException("Second call to getPlatformMBeanServer()"
56 + " returns a different MBeanServer.");
57 }
58
59 System.out.println("Test passed.");
60 }
61
62 private static void checkMBean(MBeanServer mbs, String mbeanName)
63 throws Exception {
64 try {
65 ObjectName objName = new ObjectName(mbeanName);
66 // We could call mbs.isRegistered(objName) here.
67 // Calling getMBeanInfo will throw exception if not found.
68 mbs.getMBeanInfo(objName);
69 } catch (Exception e) {
70 throw e;
71 }
72 }
73 private static void checkStandardMBeans(MBeanServer mbs) throws Exception {
74 checkMBean(mbs, CLASS_LOADING_MXBEAN_NAME);
75 checkMBean(mbs, MEMORY_MXBEAN_NAME);
76 checkMBean(mbs, OPERATING_SYSTEM_MXBEAN_NAME);
77 checkMBean(mbs, RUNTIME_MXBEAN_NAME);
78 checkMBean(mbs, THREAD_MXBEAN_NAME);
79 if (ManagementFactory.getCompilationMXBean() != null) {
80 checkMBean(mbs, COMPILATION_MXBEAN_NAME);
81 }
82
83 List pools = ManagementFactory.getMemoryPoolMXBeans();
84 for (ListIterator iter = pools.listIterator(); iter.hasNext(); ) {
85 MemoryPoolMXBean p = (MemoryPoolMXBean) iter.next();
86 checkMBean(mbs, MEMORY_POOL_MXBEAN_DOMAIN_TYPE + ",name=" + p.getName());
87 }
88
89 // Check the number of memory pools in the mbs
90 Set set = mbs.queryNames(new ObjectName(MEMORY_POOL_MXBEAN_DOMAIN_TYPE + ",*"), null);
91 if (set.size() != pools.size()) {
92 throw new RuntimeException("Unexpected number of memory pools:" +
93 "MBeanServer has " + set.size() +
94 ". Expected = " + pools.size());
95 }
96
97 List mgrs = ManagementFactory.getMemoryManagerMXBeans();
98 int num_mgrs = 0;
99 for (ListIterator iter = mgrs.listIterator(); iter.hasNext(); ) {
100 MemoryManagerMXBean m = (MemoryManagerMXBean) iter.next();
101 if (m instanceof GarbageCollectorMXBean) {
102 checkMBean(mbs, GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE
103 + ",name=" + m.getName());
104 } else {
105 checkMBean(mbs, MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE
106 + ",name=" + m.getName());
107 num_mgrs++;
108 }
109 }
110
111 List gcs = ManagementFactory.getGarbageCollectorMXBeans();
112 for (ListIterator iter = gcs.listIterator(); iter.hasNext(); ) {
113 GarbageCollectorMXBean gc = (GarbageCollectorMXBean) iter.next();
114 checkMBean(mbs, GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE
115 + ",name=" + gc.getName());
116 }
117
118 // Check the number of memory managers and garbage collectors in the mbs
119 set = mbs.queryNames(new ObjectName(MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE + ",*"), null);
120 if (set.size() != num_mgrs) {
121 throw new RuntimeException("Unexpected number of memory managers:" +
122 "MBeanServer has " + set.size() +
123 ". Expected = " + num_mgrs);
124 }
125
126 set = mbs.queryNames(new ObjectName(GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE + ",*"), null);
127 if (set.size() != gcs.size()) {
128 throw new RuntimeException("Unexpected number of garbage collectors:" +
129 "MBeanServer has " + set.size() +
130 ". Expected = " + gcs.size());
131 }
132 }
133 private static void checkPlatformMBeans(MBeanServer mbs) throws Exception {
134 checkMBean(mbs, LogManager.LOGGING_MXBEAN_NAME);
135 }
136
137 private static void printMBeans(MBeanServer mbs) throws Exception {
138 Set set = mbs.queryNames(null, null);
139 for (Iterator iter = set.iterator(); iter.hasNext(); ) {
140 System.out.println(iter.next());
141 }
142 }
143 }