How to know my spring bean is discarded in thread pool or memory ?

[차정호 <jh...@barunmo.com>]

Hello.

I love Camel and am using it for my product. 

I set my bean in the spring custom thread(prototype) scope, 
And I configure the camel route the below

<beans>
...
	<bean id="myBean" class="com.brm.test.MyBean"
	    scope="thread" init-method="start" destroy-method="stop">

	<camelContext id="camel"
xmlns="http://camel.apache.org/schema/spring">
	...
		<route>
			<from uri="seda:test" />
				<threads poolSize="10" maxPoolSize="20">
					<setExchangePattern
pattern="InOnly" />
					<to
uri="bean:myBean?method=process" />
				</threads>
		</route>
	...
	</camelContext>
...
</beans>

When I send message to seda:test,
In myBean the init-method start() was called ok. 
But I have not seen the destroy-method stop() at all in the spring
thread(prototype) scope. 

My bean maintains some resources in its life cycle as the thread scope or
the prototype scope. 

But I don't know how to clear the resources of myBean when the thread using
myBean is discared or bean is destoryed. 

If spring destroy-method is not applicable, Is Some camel listener possible
? 

Could someone help me? 

Thanks a lot before.

Re: How to know my spring bean is discarded in thread pool or memory ?

[Claus Ibsen <cl...@gmail.com>]

The thread pool will keep the thread alive for 60 seconds. I assume
the spring thread scope will invoke the destroy when thread thread is
discarded.

You can configure the keepAlive time on the <threads> for example to a
lower value to have the destroy invoke faster.

Mind that a thread pool can re-use threads, thats the point with the
pool. So a 2nd message may re-use the same bean.


2011/5/11 차정호 <jh...@barunmo.com>:
> Hello.
>
> I love Camel and am using it for my product.
>
> I set my bean in the spring custom thread(prototype) scope,
> And I configure the camel route the below
>
> <beans>
> ...
>        <bean id="myBean" class="com.brm.test.MyBean"
>            scope="thread" init-method="start" destroy-method="stop">
>
>        <camelContext id="camel"
> xmlns="http://camel.apache.org/schema/spring">
>        ...
>                <route>
>                        <from uri="seda:test" />
>                                <threads poolSize="10" maxPoolSize="20">
>                                        <setExchangePattern
> pattern="InOnly" />
>                                        <to
> uri="bean:myBean?method=process" />
>                                </threads>
>                </route>
>        ...
>        </camelContext>
> ...
> </beans>
>
> When I send message to seda:test,
> In myBean the init-method start() was called ok.
> But I have not seen the destroy-method stop() at all in the spring
> thread(prototype) scope.
>
> My bean maintains some resources in its life cycle as the thread scope or
> the prototype scope.
>
> But I don't know how to clear the resources of myBean when the thread using
> myBean is discared or bean is destoryed.
>
> If spring destroy-method is not applicable, Is Some camel listener possible
> ?
>
> Could someone help me?
>
> Thanks a lot before.
>
>
>
>



-- 
Claus Ibsen
-----------------
FuseSource
Email: cibsen@fusesource.com
Web: http://fusesource.com
CamelOne 2011: http://fusesource.com/camelone2011/
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Blog: http://davsclaus.blogspot.com/
Author of Camel in Action: http://www.manning.com/ibsen/