1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/*
* Copyright (c) 2006, 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.
*/
/* This test essentially duplicates the functionality of MXBeanTest.java.
* See LeakTest.java for an explanation.
*/
import java.lang.reflect.Field;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.HashMap;
import java.util.Map;
import javax.management.InstanceAlreadyExistsException;
import javax.management.JMX;
import javax.management.MBeanRegistrationException;
import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;
import javax.management.MalformedObjectNameException;
import javax.management.NotCompliantMBeanException;
import javax.management.ObjectName;
public class RandomMXBeanTest {
public static interface StupidMXBean {
public int ZERO = Integer.parseInt("0");
public int getZero();
public int identity(int x);
}
public static class StupidImpl implements StupidMXBean {
public int getZero() {
return 0;
}
public int identity(int x) {
return x;
}
}
public static interface ReferMXBean {
public StupidMXBean getStupid();
}
public static class ReferImpl implements ReferMXBean {
private final StupidMXBean stupid;
ReferImpl(StupidMXBean stupid) {
this.stupid = stupid;
}
public StupidMXBean getStupid() {
return stupid;
}
}
private static class WrapInvocationHandler implements InvocationHandler {
private final Object wrapped;
WrapInvocationHandler(Object wrapped) {
this.wrapped = wrapped;
}
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
return method.invoke(wrapped, args);
}
}
private static class DullInvocationHandler implements InvocationHandler {
private static Map<Class<?>, Object> zeroMap =
new HashMap<Class<?>, Object>();
static {
zeroMap.put(byte.class, (byte) 0);
zeroMap.put(int.class, 0);
zeroMap.put(short.class, (short) 0);
zeroMap.put(long.class, 0L);
zeroMap.put(float.class, 0F);
zeroMap.put(double.class, 0.0);
zeroMap.put(boolean.class, false);
zeroMap.put(char.class, '\0');
}
public static Object zeroFor(Class<?> c) {
if (c.isPrimitive())
return zeroMap.get(c);
else
return null;
}
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
Class<?> retType = method.getReturnType();
if (!retType.isPrimitive())
return null;
return zeroMap.get(retType);
}
}
public static void main(String[] args) throws Exception {
MBeanServer mbs = MBeanServerFactory.newMBeanServer();
ObjectName name = new ObjectName("a:b=c");
StupidMXBean stupid = new StupidImpl();
mbs.registerMBean(stupid, name);
ObjectName referName = new ObjectName("a:c=d");
mbs.registerMBean(new ReferImpl(stupid), referName);
System.out.println(mbs.getMBeanInfo(name));
StupidMXBean stupid2 = (StupidMXBean)
Proxy.newProxyInstance(StupidMXBean.class.getClassLoader(),
new Class<?>[] {StupidMXBean.class},
new WrapInvocationHandler(stupid));
ObjectName stupidName2 = new ObjectName("a:d=e");
mbs.registerMBean(stupid2, stupidName2);
Field zero = StupidMXBean.class.getField("ZERO");
System.out.println("Zero field = " + zero.get(null));
test(mbs, MerlinMXBean.class);
test(mbs, TigerMXBean.class);
StupidMXBean proxy = JMX.newMXBeanProxy(mbs, name, StupidMXBean.class);
System.out.println("Zero = " + proxy.getZero());
System.out.println("One = " + proxy.identity(1));
ReferMXBean referProxy =
JMX.newMXBeanProxy(mbs, referName, ReferMXBean.class);
StupidMXBean stupidProxy2 = referProxy.getStupid();
System.out.println("Same proxy: " + (proxy == stupidProxy2));
Method[] methods = StupidMXBean.class.getMethods();
for (Method method : methods) {
if (method.getParameterTypes().length == 0)
method.invoke(proxy, new Object[0]);
}
}
private static <T> void test(MBeanServer mbs, Class<T> c) throws Exception {
System.out.println("Testing " + c.getName());
T merlin = c.cast(
Proxy.newProxyInstance(c.getClassLoader(),
new Class<?>[] {c},
new DullInvocationHandler()));
ObjectName merlinName = new ObjectName("a:type=" + c.getName());
mbs.registerMBean(merlin, merlinName);
System.out.println(mbs.getMBeanInfo(merlinName));
T merlinProxy = JMX.newMXBeanProxy(mbs, merlinName, c);
Method[] merlinMethods = c.getMethods();
for (Method m : merlinMethods) {
Class<?>[] types = m.getParameterTypes();
Object[] params = new Object[types.length];
for (int i = 0; i < types.length; i++)
params[i] = DullInvocationHandler.zeroFor(types[i]);
System.out.println("Invoking " + m.getName());
m.invoke(merlinProxy, (Object[]) params);
}
}
}
|
