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feat(metrics): support OpenMetrics from applications #7125

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merged 12 commits into from
Jul 18, 2023

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AyushSenapati
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This reverts commit bba743f.

Checklist prior to review

…umahq#7092)"

This reverts commit bba743f.

Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
@AyushSenapati AyushSenapati requested a review from a team as a code owner June 26, 2023 17:41
@AyushSenapati AyushSenapati requested review from Automaat and bartsmykla and removed request for a team June 26, 2023 17:41
If mediatype is text/plain, return Prometheus text format without
checking the version param.

Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
If application supports openmetrics format, attempt to make
envoy stats compatible with openmetrics format

Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
@michaelbeaumont michaelbeaumont changed the title Revert "Revert "fix(kuma-dp): honour app content-type (#6783)" (#7092)" feat(metrics): support OpenMetrics from applications Jun 27, 2023
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Instead of converting bytes to string and use regex to dedup
new line characters and trim spaces, do the processing
on byte data.

Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
In case of FmtUnknown, as we are using Negotiate instead of
NegotiateWithOpenmetrics, change the expected content type
to FmtText from FmtOpenMetrics

Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
Process Metrics already tests what processNewlineChars function tests.
So remove the unit test for processNewlineChars function.

Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
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That's my initial review as I want to have a look once again later today

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- Use expfmt exposed consts instead of custom defined ones.
- Do not handle err returned by buf.Write() as it is always nil.

Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
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Signed-off-by: AyushSenapati <a.p.senapati008@gmail.com>
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@AyushSenapati I'm gonna test if everything works, and if @michaelbeaumont won't have anything against we could merge it

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Ok, tested with kumactl install demo --without-gateway and with kumactl install observability. It looks like everything works
image

@bartsmykla bartsmykla merged commit 7f7f96a into kumahq:master Jul 18, 2023
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Once again @AyushSenapati thank you for your contribution!

@AyushSenapati AyushSenapati deleted the revert-honour-app-contenttype branch September 19, 2023 14:15
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3 participants