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https://issues.apache.org/jira/browse/SOLR-6625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14217346#comment-14217346
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Gregory Chanan commented on SOLR-6625:
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One other note: if we buy my argument above, that each authentication
implementation may want to implement an HttpClientCallback in order to perform
some authentication-specific work, we need it in every place where uses
HttpClient. From scanning the source code, it looks like we'd need to add
something to ConcurrentUpdateSolrServer and SolrDispatchFilter and possibly
SolrCLI.
bq. Instead of the HttpClientCallback being a function of the HttpSolrServer,
it's really a function of the AuthCredentials implementation
I should mention, perhaps AuthCredentials is not a good name here if it's
credentials + callback. Maybe AuthenticationMethod or AuthenticationType or
something.
> HttpClient callback in HttpSolrServer
> -------------------------------------
>
> Key: SOLR-6625
> URL: https://issues.apache.org/jira/browse/SOLR-6625
> Project: Solr
> Issue Type: Improvement
> Components: SolrJ
> Reporter: Gregory Chanan
> Assignee: Gregory Chanan
> Priority: Minor
> Attachments: SOLR-6625.patch, SOLR-6625.patch
>
>
> Some of our setups use Solr in a SPNego/kerberos setup (we've done this by
> adding our own filters to the web.xml). We have an issue in that SPNego
> requires a negotiation step, but some HttpSolrServer requests are not
> repeatable, notably the PUT/POST requests. So, what happens is,
> HttpSolrServer sends the requests, the server responds with a negotiation
> request, and the request fails because the request is not repeatable. We've
> modified our code to send a repeatable request beforehand in these cases.
> It would be nicer if HttpSolrServer provided a pre/post callback when it was
> making an httpclient request. This would allow administrators to make
> changes to the request for authentication purposes, and would allow users to
> make per-request changes to the httpclient calls (i.e. modify httpclient
> requestconfig to modify the timeout on a per-request basis).
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