[Springframework-developer] some jmx questions.

[Mark P. <Mar...@co...>]

Hi,
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I was playing around with the JMX sandbox - very useful - and have a few =
questions  Wasn't sure if I should post on the forum...but anyway...
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I couldn't get the MetadataModelMBeanInfoAssembler to work, when I tried =
to execute a managed operation I got "no result" shown in the MX4J http =
console, although only the methods I chose to expose were displayed.  If =
I remove the usage of the metadata and rely on the reflection support - =
it all works fine but I'd like to only expose some of the methods in my =
class.
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Here is a code snip since I was doing this inside a helper class I =
already had for MX4J.  Commenting out the metadata config code results =
in a happy app... :) =20
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        JmxMBeanAdapter adapter =3D new JmxMBeanAdapter();
        adapter.setBeanFactory(beanFactory_);
        adapter.setServer(mBeanServer_);
        adapter.setBeans(beans_);
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//metadata config start

        JmxAttributeSource attributesImpl =3D new =
CommonsAttributesJmxAttributeSource();
        MetadataModelMBeanInfoAssembler ass =3D new =
MetadataModelMBeanInfoAssembler();
        ass.setAttributeSource(attributesImpl);
        MetadataNamingStrategy naming =3D new MetadataNamingStrategy();
        naming.setAttributeSource(attributesImpl);
        adapter.setAssembler(ass);
        adapter.setNamingStrategy(naming);

//metadata config end
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        LOG.info("Registering mbeans....");
        adapter.afterPropertiesSet();
        LOG.info("Done registering mbeans.");
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and I have added attributes such as
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/**
 * =
@@org.springframework.jmx.metadata.support.ManagedResource(objectName=3D"=
TeamWork:Name=3DUserService", description=3D"User Management")
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 */
public class HibernateUserService extends HibernateDaoSupport implements
        UserService
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    /**
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     * =
@@org.springframework.jmx.metadata.support.ManagedOperation(description=3D=
"Create a user with a unique id")
     */
    public User create(String uniqueName)
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and the beans_ map contains an entry=20
<entry key=3D"TeamWork:Name=3DUserService"><ref =
bean=3D"UserService"/></entry>

with a log like this....

INFO [main] 2005-01-21 17:26:01,359 =
[com.codestreet.application.jmx.DefaultAdapterFactoryBean] - Registering =
mbeans....

DEBUG [main] 2005-01-21 17:26:01,671 =
[org.springframework.jmx.JmxMBeanAdapter] - Bean Name: UserService has =
been autodetected for JMXification. Instantiating Now.

DEBUG [main] 2005-01-21 17:26:01,671 =
[org.springframework.jmx.JmxMBeanAdapter] - Bean with name: UserService =
is already registered for JMXification.

DEBUG [main] 2005-01-21 17:26:01,906 =
[org.springframework.jmx.JmxMBeanAdapter] - Located bean under key =
[TeamWork:Name=3DUserService] registering with JMX server.

DEBUG [main] 2005-01-21 17:26:01,906 =
[org.springframework.jmx.JmxMBeanAdapter] - Registering and Assembling =
MBean: TeamWork:Name=3DUserService

INFO [main] 2005-01-21 17:26:01,937 =
[org.springframework.jmx.JmxMBeanAdapter] - Registered MBean: =
TeamWork:Name=3DUserService

INFO [main] 2005-01-21 17:26:01,937 =
[com.codestreet.application.jmx.DefaultAdapterFactoryBean] - Done =
registering mbeans.

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Another issue was that for some reason the commons-attributes compiler =
was changing the string TeamWork:Name=3DUserService to =
TeamWork.Name=3DUserService, replacing the colon with a period.  Have =
you seen that?
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By way of extention has it been considered to add support for decribing =
method parameters in the operation attribute and relaying that info to =
the modelmbean?
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Thanks any help...
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Cheers,
Mark
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