76 lines
2.0 KiB
Go
76 lines
2.0 KiB
Go
package wal
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import (
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"testing"
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"github.com/influxdata/influxdb/kit/prom/promtest"
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"github.com/prometheus/client_golang/prometheus"
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)
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func TestMetrics_WAL(t *testing.T) {
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// metrics to be shared by multiple file stores.
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metrics := newWALMetrics(prometheus.Labels{"engine_id": "", "node_id": ""})
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t1 := newWALTracker(metrics, prometheus.Labels{"engine_id": "0", "node_id": "0"})
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t2 := newWALTracker(metrics, prometheus.Labels{"engine_id": "1", "node_id": "0"})
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reg := prometheus.NewRegistry()
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reg.MustRegister(metrics.PrometheusCollectors()...)
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base := namespace + "_" + walSubsystem + "_"
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// All the metric names
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gauges := []string{
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base + "old_segment_bytes",
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base + "current_segment_bytes",
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base + "segments_total",
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}
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counters := []string{
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base + "writes_total",
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}
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// Generate some measurements.
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for i, tracker := range []*walTracker{t1, t2} {
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tracker.SetOldSegmentSize(uint64(i + len(gauges[0])))
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tracker.SetCurrentSegmentSize(uint64(i + len(gauges[1])))
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tracker.SetSegments(uint64(i + len(gauges[2])))
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labels := tracker.Labels()
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labels["status"] = "ok"
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tracker.metrics.Writes.With(labels).Add(float64(i + len(counters[0])))
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}
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// Test that all the correct metrics are present.
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mfs, err := reg.Gather()
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if err != nil {
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t.Fatal(err)
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}
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// The label variants for the two caches.
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labelVariants := []prometheus.Labels{
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prometheus.Labels{"engine_id": "0", "node_id": "0"},
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prometheus.Labels{"engine_id": "1", "node_id": "0"},
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}
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for i, labels := range labelVariants {
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for _, name := range gauges {
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exp := float64(i + len(name))
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metric := promtest.MustFindMetric(t, mfs, name, labels)
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if got := metric.GetGauge().GetValue(); got != exp {
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t.Errorf("[%s %d] got %v, expected %v", name, i, got, exp)
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}
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}
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for _, name := range counters {
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exp := float64(i + len(name))
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labels["status"] = "ok"
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metric := promtest.MustFindMetric(t, mfs, name, labels)
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if got := metric.GetCounter().GetValue(); got != exp {
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t.Errorf("[%s %d] got %v, expected %v", name, i, got, exp)
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}
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}
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}
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}
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