Function Test_gauge_cantAdd

modules/generator/registry/gauge_test.go:113–155

(t *testing.T)

}

func Test_gauge_cantAdd(t *testing.T) {
	canAdd := false
	overflowLabels := labels.FromStrings("metric_overflow", "true")
	overflowHash := overflowLabels.Hash()
	lifecycler := &mockLimiter{
		onAddFunc: func(_ uint64, count uint32, lbls labels.Labels) (labels.Labels, uint64) {
			assert.Equal(t, uint32(1), count)
			if canAdd {
				return lbls, lbls.Hash()
			}
			return overflowLabels, overflowHash
		},
	}

	c := newGauge("my_gauge", lifecycler, map[string]string{}, 15*time.Minute)

	// allow adding new series
	canAdd = true

	c.Inc(buildTestLabels([]string{"label"}, []string{"value-1"}), 1.0)
	c.Inc(buildTestLabels([]string{"label"}, []string{"value-2"}), 2.0)

	collectionTimeMs := time.Now().UnixMilli()
	expectedSamples := []sample{
		newSample(map[string]string{"__name__": "my_gauge", "label": "value-1"}, collectionTimeMs, 1),
		newSample(map[string]string{"__name__": "my_gauge", "label": "value-2"}, collectionTimeMs, 2),
	}
	collectMetricAndAssert(t, c, collectionTimeMs, 2, expectedSamples, nil)

	// block new series - existing series can still be updated, new series map to overflow
	canAdd = false

	c.Inc(buildTestLabels([]string{"label"}, []string{"value-2"}), 2.0)
	c.Inc(buildTestLabels([]string{"label"}, []string{"value-3"}), 3.0)

	collectionTimeMs = time.Now().UnixMilli()
	expectedSamples = []sample{
		newSample(map[string]string{"__name__": "my_gauge", "label": "value-1"}, collectionTimeMs, 1),
		newSample(map[string]string{"__name__": "my_gauge", "label": "value-2"}, collectionTimeMs, 4),
		newSample(map[string]string{"__name__": "my_gauge", "metric_overflow": "true"}, collectionTimeMs, 3),
	}
	collectMetricAndAssert(t, c, collectionTimeMs, 3, expectedSamples, nil)
}

func Test_gauge_removeStaleSeries(t *testing.T) {
	var removedSeries int