Class MBeanClientInterceptor
- All Implemented Interfaces:
Advice
,Interceptor
,MethodInterceptor
,Aware
,BeanClassLoaderAware
,DisposableBean
,InitializingBean
- Direct Known Subclasses:
MBeanProxyFactoryBean
MethodInterceptor
that routes calls to an
MBean running on the supplied MBeanServerConnection
.
Works for both local and remote MBeanServerConnection
s.
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:
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Field Summary
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionvoid
Prepares theMBeanServerConnection
if the "connectOnStartup" is turned on (which it is by default).protected Object
convertResultValueIfNecessary
(Object result, MethodParameter parameter) Convert the given result object (from attribute access or operation invocation) to the specified target class for returning from the proxy method.void
destroy()
Invoked by the containingBeanFactory
on destruction of a bean.protected Object
doInvoke
(MethodInvocation invocation) Route the invocation to the configured managed resource.AllowMap
access to the environment to be set for the connector, with the option to add or override specific entries.protected final Class<?>
Return the management interface of the target MBean, ornull
if none specified.protected Object
handleConnectFailure
(MethodInvocation invocation, Exception ex) Refresh the connection and retry the MBean invocation if possible.invoke
(MethodInvocation invocation) Route the invocation to the configured managed resource..protected boolean
Return whether this client interceptor has already been prepared, i.e.void
prepare()
Ensures that anMBeanServerConnection
is configured and attempts to detect a local connection if one is not supplied.void
setAgentId
(String agentId) Set the agent id of theMBeanServer
to locate.void
setBeanClassLoader
(ClassLoader beanClassLoader) Callback that supplies the beanclass loader
to a bean instance.void
setConnectOnStartup
(boolean connectOnStartup) Set whether the proxy should connect to theMBeanServer
at creation time (true
) or the first time it is invoked (false
).void
setEnvironment
(Map<String, ?> environment) Specify the environment for the JMX connector.void
setManagementInterface
(Class<?> managementInterface) Set the management interface of the target MBean, exposing bean property setters and getters for MBean attributes and conventional Java methods for MBean operations.void
setObjectName
(Object objectName) Set theObjectName
of the MBean which calls are routed to, asObjectName
instance or asString
.void
setRefreshOnConnectFailure
(boolean refreshOnConnectFailure) Set whether to refresh the MBeanServer connection on connect failure.void
setServer
(MBeanServerConnection server) Set theMBeanServerConnection
used to connect to the MBean which all invocations are routed to.void
setServiceUrl
(String url) Set the service URL of the remoteMBeanServer
.void
setUseStrictCasing
(boolean useStrictCasing) Set whether to use strict casing for attributes.
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Field Details
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logger
Logger available to subclasses.
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Constructor Details
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MBeanClientInterceptor
public MBeanClientInterceptor()
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Method Details
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setServer
Set theMBeanServerConnection
used to connect to the MBean which all invocations are routed to. -
setServiceUrl
Set the service URL of the remoteMBeanServer
.- Throws:
MalformedURLException
-
setEnvironment
Specify the environment for the JMX connector. -
getEnvironment
AllowMap
access to the environment to be set for the connector, with the option to add or override specific entries.Useful for specifying entries directly, for example via
environment[myKey]
. This is particularly useful for adding or overriding entries in child bean definitions. -
setAgentId
Set the agent id of theMBeanServer
to locate.Default is none. If specified, this will result in an attempt being made to locate the attendant MBeanServer, unless the
"serviceUrl"
property has been set. -
setConnectOnStartup
public void setConnectOnStartup(boolean connectOnStartup) Set whether the proxy should connect to theMBeanServer
at creation time (true
) or the first time it is invoked (false
). Default istrue
. -
setRefreshOnConnectFailure
public void setRefreshOnConnectFailure(boolean refreshOnConnectFailure) Set whether to refresh the MBeanServer connection on connect failure. Default isfalse
.Can be turned on to allow for hot restart of the JMX server, automatically reconnecting and retrying in case of an IOException.
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setObjectName
Set theObjectName
of the MBean which calls are routed to, asObjectName
instance or asString
.- Throws:
MalformedObjectNameException
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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 calledFoo
. With strict casing disabled,getFoo()
would translate to justfoo
. -
setManagementInterface
Set the management interface of the target MBean, exposing bean property setters and getters for MBean attributes and conventional Java methods for MBean operations. -
getManagementInterface
Return the management interface of the target MBean, ornull
if none specified. -
setBeanClassLoader
Description copied from interface:BeanClassLoaderAware
Callback that supplies the beanclass loader
to a bean instance.Invoked after the population of normal bean properties but before an initialization callback such as
InitializingBean's
InitializingBean.afterPropertiesSet()
method or a custom init-method.- Specified by:
setBeanClassLoader
in interfaceBeanClassLoaderAware
- Parameters:
beanClassLoader
- the owning class loader
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afterPropertiesSet
public void afterPropertiesSet()Prepares theMBeanServerConnection
if the "connectOnStartup" is turned on (which it is by default).- Specified by:
afterPropertiesSet
in interfaceInitializingBean
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prepare
public void prepare()Ensures that anMBeanServerConnection
is configured and attempts to detect a local connection if one is not supplied. -
isPrepared
protected boolean isPrepared()Return whether this client interceptor has already been prepared, i.e. has already looked up the server and cached all metadata. -
invoke
Route the invocation to the configured managed resource..- Specified by:
invoke
in interfaceMethodInterceptor
- Parameters:
invocation
- theMethodInvocation
to re-route- Returns:
- the value returned as a result of the re-routed invocation
- Throws:
Throwable
- an invocation error propagated to the user- See Also:
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handleConnectFailure
@Nullable protected Object handleConnectFailure(MethodInvocation invocation, Exception ex) throws Throwable Refresh the connection and retry the MBean invocation if possible.If not configured to refresh on connect failure, this method simply rethrows the original exception.
- Parameters:
invocation
- the invocation that failedex
- the exception raised on remote invocation- Returns:
- the result value of the new invocation, if succeeded
- Throws:
Throwable
- an exception raised by the new invocation, if it failed as well- See Also:
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doInvoke
Route the invocation to the configured managed resource. Correctly routes JavaBean property access toMBeanServerConnection.get/setAttribute
and method invocation toMBeanServerConnection.invoke
.- Parameters:
invocation
- theMethodInvocation
to re-route- Returns:
- the value returned as a result of the re-routed invocation
- Throws:
Throwable
- an invocation error propagated to the user
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convertResultValueIfNecessary
@Nullable protected Object convertResultValueIfNecessary(@Nullable Object result, MethodParameter parameter) Convert the given result object (from attribute access or operation invocation) to the specified target class for returning from the proxy method.- Parameters:
result
- the result object as returned by theMBeanServer
parameter
- the method parameter of the proxy method that's been invoked- Returns:
- the converted result object, or the passed-in object if no conversion is necessary
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destroy
public void destroy()Description copied from interface:DisposableBean
Invoked by the containingBeanFactory
on destruction of a bean.- Specified by:
destroy
in interfaceDisposableBean
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