[SLING-8680] Installer: DefaultTransformer should check for extension first

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Installer Core 3.9.0
• Fix Version/s: Installer Core 3.10.0
• Component/s: Installer
• Assignee: Konrad Windszus
• Reporter: Konrad Windszus
• Created: 06/Sep/19 06:48
• Updated: 24/Feb/20 18:36
• Resolved: 06/Sep/19 07:14

Description

Currently the DefaultTransformer will check if a resource is a bundle by opening it and look for the manifest (https://github.com/apache/sling-org-apache-sling-installer-core/blob/0a34e33dd26092437be5180e34979abbf9a88300/src/main/java/org/apache/sling/installer/core/impl/DefaultTransformer.java#L87). Since this may take some time one should in advance check for the right extension (".jar"), which is especially important since content-packages have a manifest as well (https://github.com/apache/sling-org-apache-sling-installer-factory-packages).