Add kamon-http4k server instrumentation - #1427
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Motivation
We have a service running
http4kand would like to use Kamon with it.Description
This PR adds a new
kamon-http4kserver instrumentation module, based on the structure and logic ofkamon-http4s-1.0(some files are mostly identical)Since
http4kis built around theFilterabstraction, the instrumentation is implemented as a backend-agnosticFilterthat works out-of-the-box with any backend (e.g. Netty, SunHttp, etc.).Tests included in
ServerInstrumentationSpecpass successfully.Additionally, a demo application that uses this feature can be found in this repo: https://github.com/vaslabs-ltd/kamon-http4k-poc.
cc: @vaslabs