[jboss-jira] [JBoss JIRA] (WFCORE-972) Provide a way to correlate HTTP management requests

[Harald Pehl (JIRA)]

    [ https://issues.jboss.org/browse/WFCORE-972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13361629#comment-13361629 ] 

Harald Pehl commented on WFCORE-972:
------------------------------------

That's right, the main driver is to support multiple independent management requests in parallel. The main use case is when we execute r-r-d operations. For complex UIs like Infinispan or ActiveMQ we need to read dozens of resource descriptions upfront.

Right now we partition these r-r-d operations into composite operations with a max of three operations per composite (to reduce the payload). Then we execute and parse the composite operations one after the other. That's necessary to unambiguously map the operation to the result. If we had an unique identifier (correlation id) on the request / response, we would be able to send the operations in parallel and use the correlation id for the mapping.

> Provide a way to correlate HTTP management requests
> ---------------------------------------------------
>
>                 Key: WFCORE-972
>                 URL: https://issues.jboss.org/browse/WFCORE-972
>             Project: WildFly Core
>          Issue Type: Enhancement
>          Components: Domain Management
>            Reporter: Heiko Braun
>            Assignee: Heiko Braun
>             Fix For: 3.0.0.Beta1
>
>
> {noformat}
> public class CorrelationHandler implements HttpHandler {
>     private static final HttpString HEADER = new HttpString("X-CORR-ID");
>     private final HttpHandler next;
>     public CorrelationHandler(HttpHandler next) {
>         this.next = next;
>     }
>     @Override
>     public void handleRequest(HttpServerExchange exchange) throws Exception {
>         String corr = exchange.getRequestHeaders().getFirst(HEADER);
>         if(corr != null) {
>             exchange.getResponseHeaders().put(HEADER, corr);
>         }
>         next.handleRequest(exchange);
>     }
> }
> {noformat}



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