Initial QSfera import

Server/services/postprocessing/pkg/metrics/metrics.go

@@ -0,0 +1,77 @@
+package metrics
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
+)
+
+var (
+	// Namespace defines the namespace for the defines metrics.
+	Namespace = "qsfera"
+
+	// Subsystem defines the subsystem for the defines metrics.
+	Subsystem = "postprocessing"
+
+	buildInfo = promauto.NewGaugeVec(prometheus.GaugeOpts{
+		Namespace: Namespace,
+		Subsystem: Subsystem,
+		Name:      "build_info",
+		Help:      "Build information",
+	}, []string{"version"})
+	eventsOutstandingAcks = promauto.NewGauge(prometheus.GaugeOpts{
+		Namespace: Namespace,
+		Subsystem: Subsystem,
+		Name:      "events_outstanding_acks",
+		Help:      "Number of outstanding acks for events",
+	})
+	eventsUnprocessed = promauto.NewGauge(prometheus.GaugeOpts{
+		Namespace: Namespace,
+		Subsystem: Subsystem,
+		Name:      "events_unprocessed",
+		Help:      "Number of unprocessed events",
+	})
+	eventsRedelivered = promauto.NewGauge(prometheus.GaugeOpts{
+		Namespace: Namespace,
+		Subsystem: Subsystem,
+		Name:      "events_redelivered",
+		Help:      "Number of redelivered events",
+	})
+	finished = promauto.NewCounterVec(prometheus.CounterOpts{
+		Namespace: Namespace,
+		Subsystem: Subsystem,
+		Name:      "finished",
+		Help:      "Number of finished postprocessing events",
+	}, []string{"status"})
+	duration = promauto.NewHistogramVec(prometheus.HistogramOpts{
+		Namespace: Namespace,
+		Subsystem: Subsystem,
+		Name:      "duration_seconds",
+		Help:      "Duration of postprocessing operations in seconds",
+		Buckets:   []float64{0.1, 0.5, 1, 2.5, 5, 10, 30, 60, 120, 300, 600, 1200},
+	}, []string{"status"})
+)
+
+// Metrics defines the available metrics of this service.
+type Metrics struct {
+	// Counter  *prometheus.CounterVec
+	BuildInfo             *prometheus.GaugeVec
+	EventsOutstandingAcks prometheus.Gauge
+	EventsUnprocessed     prometheus.Gauge
+	EventsRedelivered     prometheus.Gauge
+	Finished              *prometheus.CounterVec
+	Duration              *prometheus.HistogramVec
+}
+
+// New initializes the available metrics.
+func New() *Metrics {
+	m := &Metrics{
+		BuildInfo:             buildInfo,
+		EventsOutstandingAcks: eventsOutstandingAcks,
+		EventsUnprocessed:     eventsUnprocessed,
+		EventsRedelivered:     eventsRedelivered,
+		Finished:              finished,
+		Duration:              duration,
+	}
+
+	return m
+}