Generally, where should go operations on a Collection? At Collection admin level handler? At Core level handler? There are examples of both.
I'm asking the question with the Solr encryption feature in mind (in solr-sandbox). A client may want to encrypt all the indexes for a given Collection. Which handler should receive the request? A core level handler that would then distribute the request to all the cores of the Collection across SolrCloud? Or a ClusterPlugin request handler? Bruno