[query-frontend] Set http request headers from querymiddleware request options #7033
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What this PR does
prometheusCodec
provides the methodsDecodeRequest
andEncodeRequest
to convert from anhttp.Request
to aquerymiddleware.Request
and back. The conversion from an http request sets values in the request options, but these are not considered for the conversion back to an http request. As a consequence, the http request obtained by decoding and re-encoding is not equivalent to the original request in cases where custom headers were present on the initial request.This PR adds http headers equivalent to the request options to fix this.
Which issue(s) this PR fixes or relates to
Fixes n/a
Checklist
CHANGELOG.md
updated - the order of entries should be[CHANGE]
,[FEATURE]
,[ENHANCEMENT]
,[BUGFIX]
.about-versioning.md
updated with experimental features.