[jira] [Created] (SLING-10585) Add support for invalidation requests

["Timothee Maret (Jira)" <ji...@apache.org>]

Timothee Maret created SLING-10585:
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             Summary: Add support for invalidation requests
                 Key: SLING-10585
                 URL: https://issues.apache.org/jira/browse/SLING-10585
             Project: Sling
          Issue Type: New Feature
          Components: Content Distribution
            Reporter: Timothee Maret
             Fix For: Content Distribution Journal Core 0.1.18, Content Distribution Core 0.4.8, Content Distribution Journal Messages 0.3.2, Distribution API 0.6.0


Caching invalidation is typically triggered by content distribution, after processing an `ADD` or `DELETE` distribution request. When distributing referenced content, invalidation must also include on the referencing resources. To support this use case, we'll add support for a new type of distribution request that invalidates the caches without importing content.

To support this, the org.apache.sling.distribution.DistributionRequestType API will be extended with
{code:java}
/**
 * Action type for invalidating content
 */
INVALIDATE,
{code}

The PackageMessage.ReqType will be extended with the new INVALIDATION type.

The DistributionPublisher will handle the invalidation distribution requests by sending a package message with the INVALIDATION type and no payload (like the DELETE package messages).

The DistributionSubscriber will process invalidation messages by raising imported events and invoking the import post processors.  



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