[jboss-jira] [JBoss JIRA] (WFLY-939) Class-Path manifest entries for WARs-in-EAR not handled properly

[RH Bugzilla Integration (JIRA)]

     [ https://issues.jboss.org/browse/WFLY-939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

RH Bugzilla Integration updated WFLY-939:
-----------------------------------------

        Bugzilla Update: Perform
    Bugzilla References: https://bugzilla.redhat.com/show_bug.cgi?id=955818

    
> Class-Path manifest entries for WARs-in-EAR not handled properly
> ----------------------------------------------------------------
>
>                 Key: WFLY-939
>                 URL: https://issues.jboss.org/browse/WFLY-939
>             Project: WildFly
>          Issue Type: Bug
>          Components: Server
>            Reporter: James Livingston
>            Assignee: Stuart Douglas
>
> ManifestClassPathProcessor handles the processing of Class-Path entries in deployments. The handling of those entries in sub-deployments is broken.
> https://github.com/doctau/examples/tree/master/war-manifest-classpath builds an EAR containing a utility JAR and two WARs, where both WARs refer to the jar via Class-Path manifest headers. The jar is not in the EAR's library directory nor in application.xml
> The resulting module setup will result in the jar being added to the first WAR's module, and the remaining WAR(s) depending on a separate "jar classloader". All WARs should depend on the single shared jar classloader.
> When ManifestClassPathProcessor.handlingExistingClassPathEntry() runs for the first war, it will call createAdditionalModule(), which calls createResourceRoot(). The "deploymentUnit.addToAttachmentList(Attachments.RESOURCE_ROOTS, resourceRoot)" adds it to the resource roots for that WAR.
> When handlingExistingClassPathEntry() runs for the second (and subsequent) WAR, it will already be in the additionalModules list, so "target.addToAttachmentList(Attachments.CLASS_PATH_ENTRIES, moduleSpecification.getModuleIdentifier())" gets run.
> I believe the step of adding it to the CLASS_PATH_ENTRIES attachment needs to happen on the first WAR (so it is added as a module dependency), and it should not be added to the DU RESOURCE_ROOTS so it is not in the WAR's own classloader.

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