[jira] [Commented] (SLING-2612) Add support for excluding artifacts for installation

["Carsten Ziegeler (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SLING-2612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13467570#comment-13467570 ] 

Carsten Ziegeler commented on SLING-2612:
-----------------------------------------

I've committed a first version which adds two attributes: one to add a comment and one to add an exclusion comment. If the later is set, the artifact is assumed to be excluded.
The web console will display both and also display an excluded artifact as "EXCLUDED" instead of "INSTALLED"
                
> Add support for excluding artifacts for installation
> ----------------------------------------------------
>
>                 Key: SLING-2612
>                 URL: https://issues.apache.org/jira/browse/SLING-2612
>             Project: Sling
>          Issue Type: Improvement
>          Components: Installer
>    Affects Versions: Installer Core 3.3.8
>            Reporter: Bertrand Delacretaz
>            Assignee: Carsten Ziegeler
>
> The installer currently executes all its operations without checking if they make sense in the current environment, we need more granularity for a few use cases like the ones below.
> 1) SLING-2569: do not install some bundles depending on their headers and the current environment.
> 2) Depending on the current state of the world, a ResourceTransformer needs to behave differently. For example, do not activate a RegisteredResource that contains demo content, but just upload it to the content repository.
> Note that just ignoring resources would not cover case 2), where the "upload" operation happens but not the "activate" operation.
> We might use a new InstallRule interface for that, something like:
> // Service that provides a specific rule
> public interface InstallRule {
>   public boolean shouldExecute(String operation, RegisteredResource r);
> }
> The installer can then have a master InstallRule that queries all InstallRule services in sequence (ordered by service ranking) and ANDs the results.

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