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Posted to users@camel.apache.org by Kleczka Peter John <pk...@gmail.com> on 2011/10/08 19:32:59 UTC

Updating cached content without restart?

Hi

I am using Spring for my Camel routes.  I have an XSLT component that calls for the style sheet over HTTP.  If that resource changes I have to restart ActiveMQ.  I read that I could use Camel 2.6 and turn off caching on the XSLT component, but I wonder if there are other methods to refresh this resource.  I am using ActiveMQ 5.4.2, and I do want the resource cached, but just want to be able to tell the application to update without a restart.

A second part to this question (apologies if this is more appropriate to an ActiveMQ forum) is that if the web resource is unavailable when I start ActiveMQ, it seems that I must restart ActiveMQ when the web resource becomes available again.  Is there a way to tell it to retry?

Re: Updating cached content without restart?

Posted by Claus Ibsen <cl...@gmail.com>.

On Sat, Oct 8, 2011 at 7:32 PM, Kleczka Peter John <pk...@gmail.com> wrote:
> Hi
>
> I am using Spring for my Camel routes.  I have an XSLT component that calls for the style sheet over HTTP.  If that resource changes I have to restart ActiveMQ.  I read that I could use Camel 2.6 and turn off caching on the XSLT component, but I wonder if there are other methods to refresh this resource.  I am using ActiveMQ 5.4.2, and I do want the resource cached, but just want to be able to tell the application to update without a restart.
>

I have created a Camel ticket to add a way from JMX to purge the cache
so the resource will be re-loaded
https://issues.apache.org/jira/browse/CAMEL-4528



> A second part to this question (apologies if this is more appropriate to an ActiveMQ forum) is that if the web resource is unavailable when I start ActiveMQ, it seems that I must restart ActiveMQ when the web resource becomes available again.  Is there a way to tell it to retry?
>

Do you mean using the Camel XSLT component? Afair it loads the
resource on up-start and will fail if the resource is unavailable
(fail fast).
There is no way to configure it to retry later.



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-- 
Claus Ibsen
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