Package org.apache.commons.modeler
Interface RegistryMBean
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- All Known Implementing Classes:
Registry
public interface RegistryMBean
Interface for modeler MBeans. This is the main entry point into modeler. It provides methods to create and manipulate model mbeans and simplify their use. Starting with version 1.1, this is no longer a singleton and the static methods are strongly deprecated. In a container environment we can expect different applications to use different registries.- Since:
- 1.1
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description int
getId(java.lang.String domain, java.lang.String name)
Return an int ID for faster access.void
invoke(java.util.List mbeans, java.lang.String operation, boolean failFirst)
Invoke an operation on a set of mbeans.java.util.List
loadMBeans(java.lang.Object source, java.lang.ClassLoader cl)
Load an extended mlet file.void
loadMetadata(java.lang.Object source)
Load descriptors.void
registerComponent(java.lang.Object bean, java.lang.String oname, java.lang.String type)
Register a bean by creating a modeler mbean and adding it to the MBeanServer.void
stop()
Reset all metadata cached by this registry.void
unregisterComponent(java.lang.String oname)
Unregister a component.
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Method Detail
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loadMBeans
java.util.List loadMBeans(java.lang.Object source, java.lang.ClassLoader cl) throws java.lang.Exception
Load an extended mlet file. The source can be an URL, File or InputStream. All mbeans will be instantiated, registered and the attributes will be set. The result is a list of ObjectNames.- Parameters:
source
- InputStream or URL of the filecl
- ClassLoader to be used to load the mbeans, or null to use the default JMX mechanism ( i.e. all registered loaders )- Returns:
- List of ObjectName for the loaded mbeans
- Throws:
java.lang.Exception
- Since:
- 1.1
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invoke
void invoke(java.util.List mbeans, java.lang.String operation, boolean failFirst) throws java.lang.Exception
Invoke an operation on a set of mbeans.- Parameters:
mbeans
- List of ObjectNamesoperation
- Operation to perform. Typically "init" "start" "stop" or "destroy"failFirst
- Behavior in case of exceptions - if false we'll ignore errors- Throws:
java.lang.Exception
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registerComponent
void registerComponent(java.lang.Object bean, java.lang.String oname, java.lang.String type) throws java.lang.Exception
Register a bean by creating a modeler mbean and adding it to the MBeanServer. If metadata is not loaded, we'll look up and read a file named "mbeans-descriptors.ser" or "mbeans-descriptors.xml" in the same package or parent. If the bean is an instance of DynamicMBean. it's metadata will be converted to a model mbean and we'll wrap it - so modeler services will be supported If the metadata is still not found, introspection will be used to extract it automatically. If an mbean is already registered under this name, it'll be first unregistered. If the component implements MBeanRegistration, the methods will be called. If the method has a method "setRegistry" that takes a RegistryMBean as parameter, it'll be called with the current registry.- Parameters:
bean
- Object to be registeredoname
- Name used for registrationtype
- The type of the mbean, as declared in mbeans-descriptors. If null, the name of the class will be used. This can be used as a hint or by subclasses.- Throws:
java.lang.Exception
- Since:
- 1.1
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unregisterComponent
void unregisterComponent(java.lang.String oname)
Unregister a component. We'll first check if it is registered, and mask all errors. This is mostly a helper.- Parameters:
oname
-- Since:
- 1.1
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getId
int getId(java.lang.String domain, java.lang.String name)
Return an int ID for faster access. Will be used for notifications and for other operations we want to optimize.- Parameters:
domain
- Namespacename
- Type of the notification- Returns:
- An unique id for the domain:name combination
- Since:
- 1.1
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stop
void stop()
Reset all metadata cached by this registry. Should be called to support reloading. Existing mbeans will not be affected or modified. It will be called automatically if the Registry is unregistered.- Since:
- 1.1
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loadMetadata
void loadMetadata(java.lang.Object source) throws java.lang.Exception
Load descriptors. The source can be a File, URL pointing to an mbeans-descriptors.xml. Also ( experimental for now ) a ClassLoader - in which case META-INF/ will be used.- Parameters:
source
-- Throws:
java.lang.Exception
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