Add Allocation Service Metrics

pkg/operator/controllers/allocation_api_server.go

@@ -280,6 +280,8 @@ func (s *AllocationApiServer) handleAllocationRequest(w http.ResponseWriter, r *
 		return
 	}
 
+	timeToAllocateStartTime := time.Now()
+
 	// allocation using the heap
 	for i := 0; i < allocationTries; i++ {
 		if i > 0 {
@@ -289,6 +291,7 @@ func (s *AllocationApiServer) handleAllocationRequest(w http.ResponseWriter, r *
 		if gs == nil {
 			// pop from queue returned nil, this means no more game servers in this build
 			tooManyRequestsError(w, s.logger, fmt.Errorf("not enough standingBy"), "there are not enough standingBy servers")
+			Allocations429ErrorsCounter.WithLabelValues(args.BuildID).Inc()
 			return
 		}
 
@@ -316,10 +319,13 @@ func (s *AllocationApiServer) handleAllocationRequest(w http.ResponseWriter, r *
 		if err != nil {
 			if apierrors.IsConflict(err) {
 				s.logger.Info("conflict error patching game server", "error", err, "sessionID", args.SessionID, "buildID", args.BuildID, "retry", i)
+				Allocations409ErrorsCounter.WithLabelValues(gs2.Labels[LabelBuildName]).Inc()
 			} else if apierrors.IsNotFound(err) {
 				s.logger.Info("error not found patching game server", "error", err, "sessionID", args.SessionID, "buildID", args.BuildID, "retry", i)
+				Allocations404ErrorsCounter.WithLabelValues(gs2.Labels[LabelBuildName]).Inc()
 			} else {
 				s.logger.Error(err, "uknown error patching game server", "sessionID", args.SessionID, "buildID", args.BuildID, "retry", i)
+				Allocations500ErrorsCounter.WithLabelValues(gs2.Labels[LabelBuildName]).Inc()
 			}
 			// in case of any error, trigger a reconciliation for this GameServer object
 			// so it's re-added to the queue
@@ -339,10 +345,15 @@ func (s *AllocationApiServer) handleAllocationRequest(w http.ResponseWriter, r *
 		err = json.NewEncoder(w).Encode(rs)
 		if err != nil {
 			internalServerError(w, s.logger, err, "encode json response")
+			Allocations500ErrorsCounter.WithLabelValues(gs2.Labels[LabelBuildName]).Inc()
 			return
 		}
 		s.logger.Info("Allocated GameServer", "name", gs2.Name, "sessionID", args.SessionID, "buildID", args.BuildID, "ip", gs2.Status.PublicIP, "ports", gs2.Status.Ports)
 		AllocationsCounter.WithLabelValues(gs2.Labels[LabelBuildName]).Inc()
+		if i > 0 {
+			AllocationsRetriesCounter.WithLabelValues(gs2.Labels[LabelBuildName]).Inc()
+		}
+		AllocationsTimeTakenDuration.WithLabelValues(gs2.Labels[LabelBuildName]).Set(float64(time.Since(timeToAllocateStartTime).Milliseconds()))
 		return
 	}
 

pkg/operator/controllers/metrics.go

@@ -72,4 +72,52 @@ var (
 		},
 		[]string{"BuildName"},
 	)
+	AllocationsTimeTakenDuration = registry.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Namespace: "thundernetes",
+			Name:      "allocations_time_taken_duration",
+			Help:      "Average time it took to allocate a GameServer",
+		},
+		[]string{"BuildName"},
+	)
+	AllocationsRetriesCounter = registry.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: "thundernetes",
+			Name:      "allocations_retried",
+			Help:      "The number of times allocation had to be retried",
+		},
+		[]string{"BuildName"},
+	)
+	Allocations429ErrorsCounter = registry.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: "thundernetes",
+			Name:      "allocations_429",
+			Help:      "The number of 429 (too many requests) errors during allocation",
+		},
+		[]string{"BuildName"},
+	)
+	Allocations404ErrorsCounter = registry.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: "thundernetes",
+			Name:      "allocations_404",
+			Help:      "The number of 404 (not found) errors during allocation",
+		},
+		[]string{"BuildName"},
+	)
+	Allocations500ErrorsCounter = registry.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: "thundernetes",
+			Name:      "allocations_500",
+			Help:      "The number of 500 (internal) errors during allocation",
+		},
+		[]string{"BuildName"},
+	)
+	Allocations409ErrorsCounter = registry.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: "thundernetes",
+			Name:      "allocations_409",
+			Help:      "The number of 409 (request conflict) errors during allocation",
+		},
+		[]string{"BuildName"},
+	)
 )