Add probe_dns_flag_do metric BROKEN

This adds reporting of the DNSSEC OK flag Does not currently work. Ref #551 Signed-off-by: Kim Alvefur <[email protected]>
prometheus · Mar 23, 2024 · 3189f96 · 3189f96
1 parent 220d785
commit 3189f96
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/prober/dns.go b/prober/dns.go
@@ -142,6 +142,10 @@ func ProbeDNS(ctx context.Context, target string, module config.Module, registry
 		Name: "probe_dns_additional_rrs",
 		Help: "Returns number of entries in the additional resource record list",
 	})
+	probeDNSFlagDo := prometheus.NewGauge(prometheus.GaugeOpts{
+		Name: "probe_dns_flag_do",
+		Help: "Returns whether or not the query had the DNSSEC OK flag set",
+	})
 	probeDNSQuerySucceeded := prometheus.NewGauge(prometheus.GaugeOpts{
 		Name: "probe_dns_query_succeeded",
 		Help: "Displays whether or not the query was executed successfully",
@@ -155,6 +159,7 @@ func ProbeDNS(ctx context.Context, target string, module config.Module, registry
 	registry.MustRegister(probeDNSAnswerRRSGauge)
 	registry.MustRegister(probeDNSAuthorityRRSGauge)
 	registry.MustRegister(probeDNSAdditionalRRSGauge)
+	registry.MustRegister(probeDNSFlagDo)
 	registry.MustRegister(probeDNSQuerySucceeded)
 
 	qc := uint16(dns.ClassINET)
@@ -281,6 +286,13 @@ func ProbeDNS(ctx context.Context, target string, module config.Module, registry
 	probeDNSAdditionalRRSGauge.Set(float64(len(response.Extra)))
 	probeDNSQuerySucceeded.Set(1)
 
+	// FIXME This does not work. Need to opt-in?
+	if opt := response.IsEdns0(); opt != nil && opt.Do() {
+		probeDNSFlagDo.Set(1)
+	} else {
+		probeDNSFlagDo.Set(0)
+	}
+
 	if qt == dns.TypeSOA {
 		probeDNSSOAGauge = prometheus.NewGauge(prometheus.GaugeOpts{
 			Name: "probe_dns_serial",