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https://issues.apache.org/jira/browse/SLING-6187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15606101#comment-15606101
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Justin Edelson commented on SLING-6187:
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[[email protected]] perhaps the description isn't clear -- the "list" is
populated as part of the request.
> Provide a way for a POST request to assert a set of required
> SlingPostProcessors
> --------------------------------------------------------------------------------
>
> Key: SLING-6187
> URL: https://issues.apache.org/jira/browse/SLING-6187
> Project: Sling
> Issue Type: Improvement
> Components: Servlets
> Reporter: Justin Edelson
> Assignee: Justin Edelson
> Fix For: Servlets Post 2.3.16
>
>
> I would like to add support for a new "special" parameter understood by the
> Sling Post Servlet named {{:requiredPostProcessors}}. This parameter may
> contain a comma-delimited list of names (see below) which *must* be available
> *at the time the request is processed* in order for the request to be
> handled. Whether or not those processors _do_ anything or whether the request
> succeeds or not is a separate question; this is just a preflight check if you
> will.
> If any of the required SlingPostProcessors are not available, the request
> will fail with a 501 error.
> The name of a SlingPostProcessor will be defined by a newly defined service
> registration property {{postProcessor.name}} and default to the simple name
> of the SlingPostProcessor's implementation class if that property is not
> defined.
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