[jira] [Commented] (SOLR-11099) Provide a mechanism to add non-core level handlers

["Hoss Man (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-11099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16090708#comment-16090708 ] 

Hoss Man commented on SOLR-11099:
---------------------------------

i'm leary of new APIs and new lifecycles for new plugins -- we've seen how much of a headache that can be in the past, and it would be particularly more so for something that operates outside of the existing collection framework.

Considering that:
* the existing internal APIs available to request handlers already give custom code the power to go find lists of collections, pull data from zk, executing collection API level commands, etc....
* the existing request dispatcher logic is already capable of ensuring requests for a collection are routed to a node hosting a replica of that collection

... it seems "good enough" to tell people in these very special cases that they can create an "empty" collection and put their custom non-core/non-collection specific logic there.

If nothing else: perhaps we just give people syntactic sugar for registering/querying requestHandlers on the {{.system}} collection?


> Provide a mechanism to add non-core level handlers
> --------------------------------------------------
>
>                 Key: SOLR-11099
>                 URL: https://issues.apache.org/jira/browse/SOLR-11099
>             Project: Solr
>          Issue Type: New Feature
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Anshum Gupta
>
> As of now, only collection specific handlers can be added to Solr. There is no way to add handlers that need to manage the cluster, instead of the collection/shard. Adding a hook that allows users to write custom handlers at admin/cluster level, which are initialized at core container level would be good.
> The configuration for the same could be a part of either the properties file, or a separate file.
> Addition/modification or the same could be done using the config APIs.



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