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Re: [jetty-users] Communication between a Servlet and a custom protocol

Thanks, I will try this.  

On Mon, Jan 20, 2020 at 8:56 AM Simone Bordet <sbordet@xxxxxxxxxxx> wrote:
Hi,

On Mon, Jan 20, 2020 at 4:53 PM Josh Spiegel <joshlakewg@xxxxxxxxx> wrote:
>
> I have the ConnectionFactory and the Connection implementations.
> I have the Servlet (deployed in a war file)
>
> The ConnectionFactory/Connection are deployed using a Jetty module/xml with start.jar.
> The servlet is deployed by dropping the war file in webapps.
>
> I have some dynamic state (mainly database connection pools) that I would like to share between the ConnectionFactory and the Servlet.
>
> I can set the state object as a context attribute from the servlet.  However, then it isn't clear to me how I would retrieve it from either the ConnectionFactory or Connection.

I would create your shared state bean, and add it as a Server
attribute - this can be done via a Jetty XML file and module like you
have already done.
This bean would then be easily retrievable from the ConnectionFactory
implementation, and passed to Connections.

You can then have a custom context XML file for your webapp, that
retrieves the bean from the server and sets it as a context attribute.
This file can be something like (pseudo code to convert to XML):

Server server = this.getServer();
Object bean = server.getAttribute("mySharedBean");
this.setAttribute("mySharedBean", bean);

where "this" is a WebAppContext (as per Jetty context XML file).

--
Simone Bordet
----
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