2 Replies Latest reply on Aug 15, 2008 1:08 AM by dikar

my first JMX

anand_anan2k Mar 6, 2008 9:24 PM

Hi All,

I'm new to JMX and got some basic questions related to deployment of Mbeans and registering of mbeans.

Got some code for mbean.

Mbean interface :

public interface HelloMBean {

public void sayHello();
public int add(int x, int y);

public String getName();

public int getCacheSize();
public void setCacheSize(int size);
}

mbean implementation :

public class Hello implements HelloMBean {
public void sayHello() {
System.out.println("hello, world");
}

public int add(int x, int y) {
return x + y;
}

public String getName() {
return this.name;
}

public int getCacheSize() {
return this.cacheSize;
}

public synchronized void setCacheSize(int size) {
this.cacheSize = size;

System.out.println("Cache size now " + this.cacheSize);
}

private final String name = "Reginald";
private int cacheSize = DEFAULT_CACHE_SIZE;
private static final int DEFAULT_CACHE_SIZE = 200;
}

Now , i would like to know , how to deploy the above code in JBOSS server and make the mbean register.

Are there any descriptor and i need to update , so that jboss will invoke the mbean registering function and the startup.

And please let me know , how i can lookup those mbean services.

Thanks,
Elangovan.

Hello.java

1. Re: my first JMX

dikar Aug 14, 2008 12:29 PM (in response to anand_anan2k)

There is a simple example for you (in windows OS)
By the way ,you must add the jboss-system-x.x.x.jar and jboss-jmx-x.x.x.jar in your lib path(or eclipse build path),these jar in JBoss lib dir.


##############################################
package JMX;

 import org.jboss.system.ServiceMBean;

 public interface HelloWorldServiceMBean extends ServiceMBean {

 public String getMessage();
 public void setMessage(String message);

 }
/***********************************************************/
package JMX;



 import org.jboss.system.ServiceMBeanSupport;
 public class HelloWorldService extends ServiceMBeanSupport implements HelloWorldServiceMBean {
 private String message;

 public HelloWorldService()
 {
 super();
 // TODO Auto-generated constructor stub
 }

 public String getMessage() {
 System.out.println("getMessage()=" + message);
 return message;
 }



 public void setMessage(String message) {
 System.out.println("setMessage(" + message + ")");
 this.message = message;


 }


 }/***********************************************************/
jboss-service.xml
-----------------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
 <server>
 <mbean code="JMX.HelloWorldService" name="JBoss:service=HelloWorldService">
 <attribute name="Message">Hello World</attribute>
 </mbean>
 </server>----------------------------------------------------------

In your JBOSS deploy dir ,for example:"jboss-4.2.2.GA\server\default\deploy" ,you create a dir named "Hello.sar" and new create 2 files in "Hello.sar" ,one named "JMX" and other named "META-INF".Then put the HelloWorldService.class and HelloWorldServiceMBean.class in your "JMX" dir. and new a XML file named jboss-service.xml write the content like above red XML.
ok you can run your JBOSS and access the http://127.0.0.1:8080/jmx-console/

find the "service=HelloWorldService " in JBoss domain.

Note: I'm very sorry that my English not well.

2. Re: my first JMX

dikar Aug 15, 2008 1:08 AM (in response to anand_anan2k)

I'm very sorry that I forget to tell you that put the jboss-service.xml in your "META-INF" dir.

this is the structure of hello.sar dir
hello.sar
-------META-INF
--------------jboss-service.xml
-------JMX
--------------HelloWorldService.claa
--------------HelloWorldServiceMBean.claa
Actions

Go to original post