Hello,
Yesterday I commited a BeanShell (BSH, www.beanshell.org) sub-deployer in
HEAD. It is in module varia and you can find its lib in
varia/output/lib/bsh-deployer.sar.
It allows you to hot-deploy *.bsh files in /deploy.
SIMPLE USAGE: client-only
=========================
In its simple usage, the script will act as a simple client-script making
invocations on other objects. Each script can follow the
org.jboss.system.Service interface i.e. the create, start, stop and destroy
calls. You can implement only a subset of those. Thus, a very simply
one-line script can be: Simple.bsh:
void start() { System.out.println ("I'm called!"); }
that's it.
ADVANCED USAGE: server script!
==============================
But it is almost as easy to make your script a JBoss service fully
invocable/administrable through JMX! For this, your script can implement any
of the methods of the following interface:
public interface ScriptService
extends org.jboss.system.Service
{
public String objectName ();
public String[] dependsOn ();
public Class[] getInterfaces ();
public void setCtx (ServiceMBeanSupport wrapper);
}
You can implement the objectName method to choose your own MBean ObjectName.
You can implement the dependsOn method to return a set of JMX MBean
ObjectName (as string) on which you depends (for service lifecyle).
You can implement the getInterfaces method to return the set of interfaces
that you *say* your script do implement. Your wrapper will analyse these
interfaces and fully generate the associated JMX MBeanInfo (the script
wrapper is a Dynamic MBean).
Example, let's say you have this interface:
public interface MyIntf
{
public void doThat();
public String getRWString ();
public void setRWString (String val);
public String getROString ();
}
You could then provide this script:
String name = "bla";
String objectName () { return "jboss.scripts:service=myService"; }
Class[] getInterfaces () { return new Class[] {MyIntf.class}; }
void create () { System.out.println ("Create called on me"); }
void doThat () { System.out.println ("doThat called"); }
String getRWString() { return super.name; }
void setRWString(String bla) { super.name = bla; }
String getROString() { return "I am read-only!"; }
Then, not only can you invoke methods and get/set attributes on your script
using JMX, you can also browse your scripts using the
http://localhost:8080/jmx-console/ and see all available methods/attributes
(MBeanInfo is generated by the DynamicMBean script wrapper)
Infos on BeanShell are available here: www.beanshell.org
Do you want this feature on 3.2?
Cheers,
Sacha
P.S.: This e-mail is cross-posted to the beanshell-users ML.
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