ASF GitHub Bot commented on SLING-7466:

cziegeler closed pull request #1: SLING-7466 - adding update of existing 
resource to make sure datauri …
URL: https://github.com/apache/sling-org-apache-sling-installer-core/pull/1

This is a PR merged from a forked repository.
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diff --git 
index c61af04..e143af6 100644
--- a/src/main/java/org/apache/sling/installer/core/impl/EntityResourceList.java
+++ b/src/main/java/org/apache/sling/installer/core/impl/EntityResourceList.java
@@ -373,7 +373,20 @@ public void addOrUpdate(final RegisteredResourceImpl r) {
                 if ( rr.getURL().equals(r.getURL()) ) {
                     if ( 
RegisteredResourceImpl.isSameResource((RegisteredResourceImpl)rr, r) ) {
                         if ( !rr.getDigest().equals(r.getDigest()) ) {
-                            // same resource but different digest, we need to 
remove the file
+                            // same resource but different digest, we need to 
to update the file
+                            LOGGER.debug("Updating resource with due to 
different digest: {}", r);
+                            try {
InternalResource intRes = InternalResource.create(r.getScheme(), 
new InstallableResource(r.getEntityId(), 
+                            } catch (IOException e) {
LOGGER.error("Failed to update resource with different digest: {}", r);
+                                                       }
                             LOGGER.debug("Cleanup duplicate resource: {}", r);


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> EntityResourceList cleaning up resource instead of updating
> -----------------------------------------------------------
>                 Key: SLING-7466
>                 URL: https://issues.apache.org/jira/browse/SLING-7466
>             Project: Sling
>          Issue Type: Bug
>          Components: Installer
>    Affects Versions: Installer Core 3.8.10
>            Reporter: Dominik Süß
>            Assignee: Carsten Ziegeler
>            Priority: Major
>             Fix For: Installer Core 3.8.12
> In case of a replaced launchpad containing an unchanged resource the 
> EntityResourceList is called for "addOrUpdate" of this Resource - in case the 
> resource already exists but the digest differs the method currently drops the 
> new resource without updating the existing one keeping the old dataUri.
> The issue manifests if these RegisteredResources are currently in INSTALL 
> state and the INSTALLED version gets dropped subsequently.
> This isn't just a theoretical case but was observed for cases where a bundle 
> in an n-1 version was patched to the same version provided in version n of 
> launchpad and launchpad hasn't changed for n+1. If the jcr version is then 
> removed the installation of the outdated registeredResource fails because of 
> a wrong dataUri.

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