[Feature Request] Allow setting query parameters on requests

[oliverlockwood]

Is your feature request related to a problem? Please describe

I am trying to migrate a complex project from Elasticsearch to OpenSearch. When using the RestHighLevelClient (which yes, I know is deprecated, but for various reasons, migrating away from that will be a separate follow-on piece of work!) I cannot filter out some big fields that aren't always required, which means that my search responses are much bigger than they could be; this adversely affects the performance of the application.

This problem is essentially the same as that described in #535.

Describe the solution you'd like

At a fundamental level, I'd like to be able to set a query parameter like ?filter_path=-hits.hits._source.somethingbig (as documented at https://opensearch.org/docs/2.3/opensearch/common-parameters/#filtered-responses.

I would be happy to implement this from scratch without inspecting the PR implementation of #536 which was closed due to the authors concerns about license infringement. To that end, I have deliberately not looked at that PR.

Related component

Clients

Describe alternatives you've considered

No response

Additional context

No response

[peternied]

[Triage - attendees 1 2 3 4 5 6 7 8 9 10]
@oliverlockwood Thanks for creating this issue, we would love a pull request to include this functionality - which I see you have already created