org.springframework.jmx.access
Class MBeanClientInterceptor

java.lang.Object
  org.springframework.jmx.access.MBeanClientInterceptor

All Implemented Interfaces:

Advice, Interceptor, MethodInterceptor, DisposableBean, InitializingBean

Direct Known Subclasses:

MBeanProxyFactoryBean

public class MBeanClientInterceptor
extends Object
implements MethodInterceptor, InitializingBean, DisposableBean

MethodInterceptor implementation that routes calls to an MBean running on the supplied MBeanServerConnection. Works for both local and remote MBeanServerConnections.

By default, the MBeanClientInterceptor will connect to the MBeanServer and cache MBean metadata at startup. This can be undesirable when running against a remote MBeanServer that may not be running when the application starts. Through setting the connectOnStartup property to "false", you can defer this process until the first invocation against the proxy.

This functionality is usually used through MBeanProxyFactoryBean. See the javadoc of that class for more information.

Since:

1.2

Author:

Rob Harrop, Juergen Hoeller

See Also:

MBeanProxyFactoryBean, setConnectOnStartup(boolean)

Field Summary

protected org.apache.commons.logging.Log

logger

Constructor Summary

MBeanClientInterceptor()

Method Summary

void	afterPropertiesSet() Ensures that an MBeanServerConnection is configured and attempts to detect a local connection if one is not supplied.
void	destroy() Closes any JMXConnector that may be managed by this interceptor.
Object	invoke(MethodInvocation invocation) Route the invocation to the configured managed resource.
void	setConnectOnStartup(boolean connectOnStartup) Set whether or not the proxy should connect to the MBeanServer at creation time ("true") or the first time it is invoked ("false").
void	setObjectName(String objectName) Set the ObjectName of the MBean which calls are routed to.
void	setServer(MBeanServerConnection server) Set the MBeanServerConnection used to connect to the MBean which all invocations are routed to.
void	setServiceUrl(String url) Set the service URL of the remote MBeanServer.
void	setUseStrictCasing(boolean useStrictCasing) Set whether to use strict casing for attributes.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

protected final org.apache.commons.logging.Log logger

Constructor Detail

MBeanClientInterceptor

public MBeanClientInterceptor()

Method Detail

setServer

public void setServer(MBeanServerConnection server)

Set the MBeanServerConnection used to connect to the MBean which all invocations are routed to.

setServiceUrl

public void setServiceUrl(String url)
                   throws MalformedURLException

Set the service URL of the remote MBeanServer.

Throws:

MalformedURLException

setConnectOnStartup

public void setConnectOnStartup(boolean connectOnStartup)

Set whether or not the proxy should connect to the MBeanServer at creation time ("true") or the first time it is invoked ("false"). Default is "true".

setObjectName

public void setObjectName(String objectName)
                   throws MalformedObjectNameException

Set the ObjectName of the MBean which calls are routed to.

Throws:

MalformedObjectNameException

setUseStrictCasing

public void setUseStrictCasing(boolean useStrictCasing)

Set whether to use strict casing for attributes. Enabled by default.

When using strict casing, a JavaBean property with a getter such as getFoo() translates to an attribute called Foo. With strict casing disabled, getFoo() would translate to just foo.

afterPropertiesSet

public void afterPropertiesSet()
                        throws MBeanServerNotFoundException,
                               MBeanInfoRetrievalException

Ensures that an MBeanServerConnection is configured and attempts to detect a local connection if one is not supplied.

Specified by:

afterPropertiesSet in interface InitializingBean

Throws:

MBeanServerNotFoundException

MBeanInfoRetrievalException

invoke

public Object invoke(MethodInvocation invocation)
              throws Throwable

Route the invocation to the configured managed resource. Correctly routes JavaBean property access to MBeanServerConnection.get/setAttribute and method invocation to MBeanServerConnection.invoke. Any attempt to invoke a method that does not correspond to an attribute or operation defined in the management interface of the managed resource results in an InvalidInvocationException.

Specified by:

invoke in interface MethodInterceptor

Parameters:

invocation - the MethodInvocation to re-route.

Returns:

the value returned as a result of the re-routed invocation.

Throws:

InvocationFailureException - if the invocation does not match an attribute or operation on the management interface of the resource.

Throwable - typically as the result of an error during invocation

destroy

public void destroy()
             throws Exception

Closes any JMXConnector that may be managed by this interceptor.

Specified by:

destroy in interface DisposableBean

Throws:

Exception - in case of shutdown errors. Exceptions will get logged but not rethrown to allow other beans to release their resources too.