If you add it via a ServletExtension you can control where it is
executed. io.undertow.servlet.api.DeploymentInfo#addOuterHandlerChainWrapper
will allow you to add it so that it is run after the servlet initial
handler, but before any other handlers.
Stuart
On Thu, Feb 16, 2017 at 5:04 PM, Rohan Emmanuel
<rohan.emmanuel07(a)gmail.com> wrote:
 Thanks for your reply Stuart,
 i have the handler "HAHandler" configured as filter in the undertow
 subsystem of wildfly.
 I also have eager filter initialization on filter enabled.And the Filter
 init() method is getting called while application deployment and it had set
 the servletContext.
   <filters>
                     <response-header name="server-header"
 header-name="Server" header-value="WildFly/10"/>
                     <response-header name="x-powered-by-header"
 header-name="X-Powered-By" header-value="Undertow/1"/>
                     <error-page name="500Handler"
 path="${jboss.home.dir}/welcome-content/ErrorPage.html"
code="506"/>
                     <error-page name="404Handler"
 path="${jboss.home.dir}/welcome-content/ErrorPage.html"
code="404"/>
                     <filter name="HAHandler"
module="com.haHandler"
 class-name="com.HAHandler"/>
                 </filters>
 You were correct, by adding some logs,  the sevletInitalHandler hadn't added
 the attachment when my handler was called.
 any suggestions how to move my handler in the chain after a specific handler
 (ServletInitailHandler)?
 On Thu, Feb 16, 2017 at 4:48 AM, Stuart Douglas <sdouglas(a)redhat.com> wrote:
>
> Where is your handler running? It sounds like it is running outside
> the ServletInitialHandler, which is what sets the attachment key.
>
> If that is the case you can either move the handler to be run after
> the ServletInitialHandler, or save the ServletContext somewhere
> static.
>
> Stuart
>
> On Wed, Feb 15, 2017 at 9:34 PM, Rohan Emmanuel
> <rohan.emmanuel07(a)gmail.com> wrote:
> > I am using wildfly 10 and have a filter in my web application which will
> > set
> > a attribute in the servlet context.
> >
> >
> >
> > public void init(FilterConfig arg0)
> >
> >     throws ServletException
> >
> >   {
> >
> >    ServletContext sc = arg0.getServletContext();
> >
> >    System.out.println("setting the servlet context");
> >
> >    sc.setAttribute("ha","ha is enabled for this
application");
> >
> >   }
> >
> >
> >
> > I want to get this attribute in one of my httphandler.
> >
> >
> >
> > ServletRequestContext servletreqcontext =
> > exchange.getAttachment(ServletRequestContext.ATTACHMENT_KEY);
> >
> >     System.out.println("servletreqcontext-="+servletreqcontext);
> >
> >
> >
> > the above code is returing NULL.
> >
> > Any idea how can i get a handle on the  servletContext in httphandler to
> > get
> > this attribute?
> >
> >
> > --
> > Regards,
> > Rohan Emmanuel
> >
> > _______________________________________________
> > undertow-dev mailing list
> > undertow-dev(a)lists.jboss.org
> > 
https://lists.jboss.org/mailman/listinfo/undertow-dev
 --
 Regards,
 Rohan Emmanuel