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Enable monitoring for non middleware

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If monitoring is enabled for one zone, also enable it for when the

server reports REFUSED. Normally the metrics are only enabled if

you enter the middleware, with this you'll see REFUSED queries.

Each of these are reported agains the root zone otherwise
This commit is contained in:
Miek Gieben
2016-04-06 14:13:29 +01:00
parent 9f5e081a09
commit 7e05aa8069
2 changed files with 25 additions and 5 deletions
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17
middleware/prometheus/handler.go
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@@ -22,14 +22,21 @@ func (m Metrics) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg)
rw := middleware.NewResponseRecorder(w)
status, err := m.Next.ServeDNS(ctx, rw, r)
m.Report(zone, qtype, rw)
Report(zone, qtype, rw.Rcode(), rw.Size(), rw.Start())
return status, err
}
func (m Metrics) Report(zone, qtype string, rw *middleware.ResponseRecorder) {
// Report is a plain reporting function that the server can use for REFUSED and other
// queries that are turned down because they don't match any middleware.
func Report(zone, qtype, rcode string, size int, start time.Time) {
if requestCount == nil {
// no metrics are enabled
return
}
requestCount.WithLabelValues(zone, qtype).Inc()
requestDuration.WithLabelValues(zone, qtype).Observe(float64(time.Since(rw.Start()) / time.Second))
responseSize.WithLabelValues(zone, qtype).Observe(float64(rw.Size()))
responseRcode.WithLabelValues(zone, rw.Rcode(), qtype).Inc()
requestDuration.WithLabelValues(zone, qtype).Observe(float64(time.Since(start) / time.Second))
responseSize.WithLabelValues(zone, qtype).Observe(float64(size))
responseRcode.WithLabelValues(zone, rcode, qtype).Inc()
}