[jira] [Resolved] (SLING-8065) Introduce ReadOnlyDistributionQueue API

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

     [ https://issues.apache.org/jira/browse/SLING-8065?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Timothee Maret resolved SLING-8065.
-----------------------------------
    Resolution: Won't Do

Instead of extracting trait APIs, we used a queue meta data approach to specify the queue capabilities in SLING-8086. 

> Introduce ReadOnlyDistributionQueue API
> ---------------------------------------
>
>                 Key: SLING-8065
>                 URL: https://issues.apache.org/jira/browse/SLING-8065
>             Project: Sling
>          Issue Type: Improvement
>          Components: Content Distribution
>    Affects Versions: Content Distribution Core 0.3.4
>            Reporter: Timothee Maret
>            Assignee: Timothee Maret
>            Priority: Major
>             Fix For: Content Distribution Core 0.3.6
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> We currently export an [SPI|https://github.com/apache/sling-org-apache-sling-distribution-core/tree/master/src/main/java/org/apache/sling/distribution/queue/spi] with a fully editable queue, [DistributionQueue|https://github.com/apache/sling-org-apache-sling-distribution-core/blob/master/src/main/java/org/apache/sling/distribution/queue/spi/DistributionQueue.java].
> Some distribution queue implementation are read-only meaning that they don't provide the ability to add/remove items. Example of such read-only queue is an implementation on top of an append only messaging service.
> In this issue, I suggest to introduce add and export the {{ReadOnlyDistributionQueue}} interface. The existing read-only method signatures from {{DistributionQueue}} would be moved from {{DistributionQueue}} to {{ReadOnlyDistributionQueue}}. {{DistributionQueue}} would extend from {{ReadOnlyDistributionQueue}}. This change is backward compatible.



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