update readme and metric

README.md

@@ -1,5 +1,5 @@
 # spot-interruption-exporter
-Publishes a prometheus metric `interruption_events_total` whenever a spot instance has been interrupted.
+Publishes a prometheus metric `interruption_events_total` that increments by 1 whenever a spot instance has been interrupted.
 
 This is a very helpful metric, as it 
 
@@ -9,7 +9,7 @@ This is a very helpful metric, as it
 
 - can aid in seeing how much more susceptible single-zone clusters are to interruption
 
-- can be used as a signal on whether or not to promote spot instances to other environments
+- can be used as a signal on whether to promote spot instances to other environments
 
 The app can be expanded to support other cloud providers, but currently is only built for GCP.
 

main.go

@@ -23,8 +23,8 @@ import (
 var (
 	interruptionEvents = promauto.NewCounterVec(prometheus.CounterOpts{
 		Name: "interruption_events_total",
-		Help: "The total number of interruption events for a given cluster",
-	}, []string{"kubernetes_cluster", "resource_id"})
+		Help: "The total number of spot interruptions for a given cluster",
+	}, []string{"kubernetes_cluster"})
 )
 
 func main() {
@@ -56,14 +56,14 @@ func main() {
 	go n.Receive(ctx, e)
 
 	c := cache.NewCacheWithTTL(time.Minute * 10)
-	sugar.Info("listening for preemption events")
 	for event := range e {
 		// this ensures we do not handle a duplicate message in the event pubsub sends it more than once
 		if exists := c.Exists(event.MessageID); exists {
 			continue
 		}
 		c.Insert(event.MessageID)
-		interruptionEvents.WithLabelValues(cfg.ClusterName, event.ResourceID).Inc()
+		interruptionEvents.WithLabelValues(cfg.ClusterName).Inc()
+		sugar.With("resource_id", event.ResourceID).Info("interrupted")
 	}
 }