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feat(tvix/tracing): http trace propagation

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Introduces a helper function within tvix-tracing that returns a reqwest
tracing middleware that will ingest the traceparent if otlp is enabled.

It is feature flagged in tvix-tracing so not every consumer of that
library automatically has reqwest in its dependencies.

Tested using netcat to verify that the `traceparent` header is there if
otlp is enabled and missing if otlp feature is disabled.

Change-Id: I5abccae777b725f5ff7382e3686165383c477a39
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11886
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
This commit is contained in:
Simon Hauser 2024-06-27 10:27:29 +02:00
parent 7f8da5e6a9
commit 618aacaa61
10 changed files with 302 additions and 17 deletions
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2
tvix/tracing/default.nix
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@ -6,6 +6,6 @@
meta.ci.targets = lib.filter (x: lib.hasPrefix "with-features" x || x == "no-features") (lib.attrNames passthru);
passthru = depot.tvix.utils.mkFeaturePowerset {
inherit (old) crateName;
features = [ "otlp" "tracy" ];
features = [ "otlp" "tracy" "tonic" "reqwest" ];
};
})