Dynamic headers/authentication for HTTP-based sources (using the http_client source)

[d3vzer0]

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Use Cases

The http_client source currently only supports VRL templating in the query configuration, but not for headers/ auth. This prevents implementing HTTP-based sources which may require dynamic values as part of the request headers to fetch logs/events.

Attempted Solutions

No response

Proposal

Extend the http_client source to additionally support VRL templating in:

• headers configuration and/or
• auth configuration

References

#23692

Version

vector 0.49.0 (aarch64-apple-darwin dc7e792 2025-08-12 13:47:08.632326804)

[d3vzer0]

Heya @pront, just noticed the http_server label was added but this request is about the http_client source 👀