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Record metrics for invocations when they start

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* This experimental patch records metrics as invocations start
so that the metrics can be used to make better scale to zero
decisions in faas-idler.

Tested with Kubernetes on a single-node cluster, metrics
reported as expected. Existing metrics still report.

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>
This commit is contained in:
Alex Ellis (OpenFaaS Ltd)
2019-12-19 10:18:28 +00:00
committed by Alex Ellis
parent 1eea381dd5
commit 96812d2cd8
11 changed files with 51 additions and 22 deletions
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2
gateway/handlers/notifier_handler.go
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@ -18,7 +18,7 @@ func MakeNotifierWrapper(next http.HandlerFunc, notifiers []HTTPNotifier) http.H
url := r.URL.String()
for _, notifier := range notifiers {
notifier.Notify(r.Method, url, url, writer.Status(), time.Since(then))
notifier.Notify(r.Method, url, url, writer.Status(), "completed", time.Since(then))
}
}
}