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1
8
9 package mx4j.log;
10
11 import javax.management.MBeanServer  ;
12 import javax.management.ObjectName ;
13 import javax.management.MBeanException ;
14 import javax.management.MBeanInfo ;
15 import javax.management.MBeanOperationInfo ;
16 import javax.management.MBeanParameterInfo ;
17 import javax.management.ServiceNotFoundException ;
18
19
30 public class MBeanLogger extends Logger
31 {
32 private MBeanServer m_server;
33 private ObjectName m_name;
34
35 public MBeanLogger(MBeanServer server, ObjectName objectName) throws MBeanException
36 {
37 if (server == null) {throw new MBeanException (new IllegalArgumentException ("MBeanServer cannot be null"));}
38 if (objectName == null) {throw new MBeanException (new IllegalArgumentException ("ObjectName cannot be null"));}
39
40 m_server = server;
41 m_name = objectName;
42
43 boolean found = false;
44 try
45 {
46 MBeanInfo info = m_server.getMBeanInfo(m_name);
47 MBeanOperationInfo [] opers = info.getOperations();
48 if (opers != null)
49 {
50 for (int i = 0; i < opers.length; ++i)
51 {
52 MBeanOperationInfo oper = opers[i];
53 if (oper.getName().equals("log"))
54 {
55 MBeanParameterInfo [] params = oper.getSignature();
56 if (params.length == 3)
57 {
58 if (params[0].getType().equals("int") &&
59 params[1].getType().equals("java.lang.Object") &&
60 params[2].getType().equals("java.lang.Throwable"))
61 {
62 found = true;
63 break;
64 }
65 }
66 }
67 }
68 }
69 }
70 catch (Exception x)
71 {
72 x.printStackTrace();
73 }
74 if (!found) {throw new MBeanException (new ServiceNotFoundException ("MBean does not have an operation log(int,Object,Throwable)"));}
75 }
76
77 protected void log(int priority, Object message, Throwable t)
78 {
79 try
80 {
81 m_server.invoke(m_name, "log", new Object [] {new Integer (priority), message, t}, new String [] {"int", "java.lang.Object", "java.lang.Throwable"});
82 }
83 catch (Exception x)
84 {
85 x.printStackTrace();
86 }
87 }
88 }
89 |
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