public class MBeanServerFactoryBean extends java.lang.Object implements FactoryBean<javax.management.MBeanServer>, InitializingBean, DisposableBean
FactoryBean
that obtains an MBeanServer
reference
through the standard JMX 1.2 MBeanServerFactory
API (which is available on JDK 1.5 or as part of a JMX 1.2 provider).
Exposes the MBeanServer
for bean references.
By default, MBeanServerFactoryBean
will always create
a new MBeanServer
even if one is already running. To have
the MBeanServerFactoryBean
attempt to locate a running
MBeanServer
first, set the value of the
"locateExistingServerIfPossible" property to "true".
setLocateExistingServerIfPossible(boolean)
,
locateMBeanServer(java.lang.String)
,
MBeanServer
,
MBeanServerFactory.findMBeanServer(java.lang.String)
,
MBeanServerFactory.createMBeanServer()
,
MBeanServerFactory.newMBeanServer()
,
MBeanServerConnectionFactoryBean
,
ConnectorServerFactoryBean
Constructor and Description |
---|
MBeanServerFactoryBean() |
Modifier and Type | Method and Description |
---|---|
void |
afterPropertiesSet()
Creates the
MBeanServer instance. |
protected javax.management.MBeanServer |
createMBeanServer(java.lang.String defaultDomain,
boolean registerWithFactory)
Create a new
MBeanServer instance and register it with the
MBeanServerFactory , if desired. |
void |
destroy()
Unregisters the
MBeanServer instance, if necessary. |
javax.management.MBeanServer |
getObject()
Return an instance (possibly shared or independent) of the object
managed by this factory.
|
java.lang.Class<? extends javax.management.MBeanServer> |
getObjectType()
Return the type of object that this FactoryBean creates,
or
null if not known in advance. |
boolean |
isSingleton()
Is the object managed by this factory a singleton? That is,
will
FactoryBean.getObject() always return the same object
(a reference that can be cached)? |
protected javax.management.MBeanServer |
locateMBeanServer(java.lang.String agentId)
Attempt to locate an existing
MBeanServer . |
void |
setAgentId(java.lang.String agentId)
Set the agent id of the
MBeanServer to locate. |
void |
setDefaultDomain(java.lang.String defaultDomain)
Set the default domain to be used by the
MBeanServer ,
to be passed to MBeanServerFactory.createMBeanServer()
or MBeanServerFactory.findMBeanServer() . |
void |
setLocateExistingServerIfPossible(boolean locateExistingServerIfPossible)
Set whether or not the
MBeanServerFactoryBean should attempt
to locate a running MBeanServer before creating one. |
void |
setRegisterWithFactory(boolean registerWithFactory)
Set whether to register the
MBeanServer with the
MBeanServerFactory , making it available through
MBeanServerFactory.findMBeanServer() . |
protected final Log logger
public void setLocateExistingServerIfPossible(boolean locateExistingServerIfPossible)
MBeanServerFactoryBean
should attempt
to locate a running MBeanServer
before creating one.
Default is false
.
public void setAgentId(java.lang.String agentId)
MBeanServer
to locate.
Default is none. If specified, this will result in an automatic attempt being made to locate the attendant MBeanServer, and (importantly) if said MBeanServer cannot be located no attempt will be made to create a new MBeanServer (and an MBeanServerNotFoundException will be thrown at resolution time).
Specifying the empty String indicates the platform MBeanServer.
MBeanServerFactory.findMBeanServer(String)
public void setDefaultDomain(java.lang.String defaultDomain)
MBeanServer
,
to be passed to MBeanServerFactory.createMBeanServer()
or MBeanServerFactory.findMBeanServer()
.
Default is none.
MBeanServerFactory.createMBeanServer(String)
,
MBeanServerFactory.findMBeanServer(String)
public void setRegisterWithFactory(boolean registerWithFactory)
MBeanServer
with the
MBeanServerFactory
, making it available through
MBeanServerFactory.findMBeanServer()
.MBeanServerFactory.createMBeanServer()
,
MBeanServerFactory.findMBeanServer(java.lang.String)
public void afterPropertiesSet() throws MBeanServerNotFoundException
MBeanServer
instance.afterPropertiesSet
in interface InitializingBean
MBeanServerNotFoundException
protected javax.management.MBeanServer locateMBeanServer(@Nullable java.lang.String agentId) throws MBeanServerNotFoundException
MBeanServer
.
Called if locateExistingServerIfPossible
is set to true
.
The default implementation attempts to find an MBeanServer
using
a standard lookup. Subclasses may override to add additional location logic.
agentId
- the agent identifier of the MBeanServer to retrieve.
If this parameter is null
, all registered MBeanServers are
considered.MBeanServer
if foundMBeanServerNotFoundException
- if no MBeanServer
could be foundsetLocateExistingServerIfPossible(boolean)
,
JmxUtils.locateMBeanServer(String)
,
MBeanServerFactory.findMBeanServer(String)
protected javax.management.MBeanServer createMBeanServer(@Nullable java.lang.String defaultDomain, boolean registerWithFactory)
MBeanServer
instance and register it with the
MBeanServerFactory
, if desired.defaultDomain
- the default domain, or null
if noneregisterWithFactory
- whether to register the MBeanServer
with the MBeanServerFactory
MBeanServerFactory.createMBeanServer()
,
MBeanServerFactory.newMBeanServer()
@Nullable public javax.management.MBeanServer getObject()
FactoryBean
As with a BeanFactory
, this allows support for both the
Singleton and Prototype design pattern.
If this FactoryBean is not fully initialized yet at the time of
the call (for example because it is involved in a circular reference),
throw a corresponding FactoryBeanNotInitializedException
.
As of Spring 2.0, FactoryBeans are allowed to return null
objects. The factory will consider this as normal value to be used; it
will not throw a FactoryBeanNotInitializedException in this case anymore.
FactoryBean implementations are encouraged to throw
FactoryBeanNotInitializedException themselves now, as appropriate.
getObject
in interface FactoryBean<javax.management.MBeanServer>
null
)FactoryBeanNotInitializedException
public java.lang.Class<? extends javax.management.MBeanServer> getObjectType()
FactoryBean
null
if not known in advance.
This allows one to check for specific types of beans without instantiating objects, for example on autowiring.
In the case of implementations that are creating a singleton object, this method should try to avoid singleton creation as far as possible; it should rather estimate the type in advance. For prototypes, returning a meaningful type here is advisable too.
This method can be called before this FactoryBean has been fully initialized. It must not rely on state created during initialization; of course, it can still use such state if available.
NOTE: Autowiring will simply ignore FactoryBeans that return
null
here. Therefore it is highly recommended to implement
this method properly, using the current state of the FactoryBean.
getObjectType
in interface FactoryBean<javax.management.MBeanServer>
null
if not known at the time of the callListableBeanFactory.getBeansOfType(java.lang.Class<T>)
public boolean isSingleton()
FactoryBean
FactoryBean.getObject()
always return the same object
(a reference that can be cached)?
NOTE: If a FactoryBean indicates to hold a singleton object,
the object returned from getObject()
might get cached
by the owning BeanFactory. Hence, do not return true
unless the FactoryBean always exposes the same reference.
The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory; usually, it has to be defined as singleton there.
NOTE: This method returning false
does not
necessarily indicate that returned objects are independent instances.
An implementation of the extended SmartFactoryBean
interface
may explicitly indicate independent instances through its
SmartFactoryBean.isPrototype()
method. Plain FactoryBean
implementations which do not implement this extended interface are
simply assumed to always return independent instances if the
isSingleton()
implementation returns false
.
The default implementation returns true
, since a
FactoryBean
typically manages a singleton instance.
isSingleton
in interface FactoryBean<javax.management.MBeanServer>
FactoryBean.getObject()
,
SmartFactoryBean.isPrototype()
public void destroy()
MBeanServer
instance, if necessary.destroy
in interface DisposableBean