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1
17 package org.apache.geronimo.kernel.jmx;
18
19 import java.util.IdentityHashMap  ;
20 import javax.management.ObjectName ;
21
22 import net.sf.cglib.proxy.Callback;
23 import net.sf.cglib.proxy.Enhancer;
24 import net.sf.cglib.proxy.MethodInterceptor;
25 import org.apache.geronimo.kernel.Kernel;
26 import org.apache.geronimo.kernel.basic.ProxyMethodInterceptor;
27 import org.apache.geronimo.kernel.proxy.ProxyFactory;
28 import org.apache.geronimo.kernel.proxy.ProxyManager;
29
30
33 public class JMXProxyManager implements ProxyManager {
34 private final Kernel kernel;
35 private final IdentityHashMap interceptors = new IdentityHashMap ();
36
37 public JMXProxyManager(Kernel kernel) {
38 this.kernel = kernel;
39 }
40
41 public synchronized ProxyFactory createProxyFactory(Class type) {
42 assert type != null: "type is null";
43 return new ManagedProxyFactory(type);
44 }
45
46 public synchronized Object createProxy(ObjectName target, Class type) {
47 assert type != null: "type is null";
48 assert target != null: "target is null";
49
50 return createProxyFactory(type).createProxy(target);
51 }
52
53 public synchronized void destroyProxy(Object proxy) {
54 if (proxy == null) {
55 return;
56 }
57
58 ProxyMethodInterceptor methodInterceptor = (ProxyMethodInterceptor) interceptors.remove(proxy);
59 if (methodInterceptor != null) {
60 methodInterceptor.destroy();
61 }
62 }
63
64 public boolean isProxy(Object proxy) {
65 return interceptors.containsKey(proxy);
66 }
67
68 public synchronized ObjectName getProxyTarget(Object proxy) {
69 ProxyMethodInterceptor methodInterceptor = (ProxyMethodInterceptor) interceptors.remove(proxy);
70 if (methodInterceptor == null) {
71 return null;
72 }
73 return methodInterceptor.getObjectName();
74 }
75
76 private class ManagedProxyFactory implements ProxyFactory {
77 private final Class type;
78 private final Enhancer enhancer;
79
80 public ManagedProxyFactory(Class type) {
81 enhancer = new Enhancer();
82 enhancer.setSuperclass(type);
83 enhancer.setCallbackType(MethodInterceptor.class);
84 enhancer.setUseFactory(false);
85 this.type = enhancer.createClass();
86 }
87
88 public synchronized Object createProxy(ObjectName target) {
89 assert target != null: "target is null";
90
91 JMXProxyMethodInterceptor interceptor = new JMXProxyMethodInterceptor(type, kernel, target);
92
93 enhancer.setCallbacks(new Callback[]{interceptor});
95 Object proxy = enhancer.create();
96
97 interceptors.put(proxy, interceptor);
98 return proxy;
99 }
100 }
101 }
102 |
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