Feat: Add RBL rejection metric

Christian Roessner · Christian Roessner · commit a35f2fff5b90 · 2024-10-10T12:46:42.000+02:00
Track the total number of rejected RBL requests by RBL name. This metric will help in understanding the impact of RBLs on request handling.

Signed-off-by: Christian Roessner &lt;c@roessner.co&gt;
diff --git a/server/core/features.go b/server/core/features.go
@@ -255,6 +255,7 @@ func (a *AuthState) processRBL(ctx *gin.Context, rbl *config.RBL, rblChan chan i
 	}
 
 	if isListed {
+		stats.RBLRejected.WithLabelValues(rblName).Inc()
 		logMatchedRBL(a, rblName, rbl.Weight)
 		handleRBLOutcome(waitGroup, rblChan, rbl.Weight)
 
diff --git a/server/stats/statistics.go b/server/stats/statistics.go
@@ -237,6 +237,12 @@ var (
 		Name: "ldap_idle_pool_size",
 		Help: "Size of idle LDAP pool",
 	}, []string{"pool"})
+
+	// RBLRejected counts the total number of rejected RBL requests, categorized by the RBL that caused the rejection.
+	RBLRejected = promauto.NewCounterVec(prometheus.CounterOpts{
+		Name: "rbl_rejected_total",
+		Help: "The total number of rejected RBL requests",
+	}, []string{"rbl"})
 )
 
 var oldCpu cpu.Stats

Original file line number	Diff line number	Diff line change
`@@ -255,6 +255,7 @@ func (a AuthState) processRBL(ctx gin.Context, rbl *config.RBL, rblChan chan i`
`255`	`255`	`}`
`256`	`256`
`257`	`257`	`if isListed {`
	`258`	`+ stats.RBLRejected.WithLabelValues(rblName).Inc()`
`258`	`259`	`logMatchedRBL(a, rblName, rbl.Weight)`
`259`	`260`	`handleRBLOutcome(waitGroup, rblChan, rbl.Weight)`
`260`	`261`