111 lines
3.2 KiB
Go
111 lines
3.2 KiB
Go
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package metricsutil
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import (
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"testing"
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"time"
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"github.com/armon/go-metrics"
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)
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func isLabelPresent(toFind Label, ls []Label) bool {
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for _, l := range ls {
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if l == toFind {
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return true
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}
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}
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return false
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}
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// We can use a sink directly, or wrap the top-level
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// go-metrics implementation for testing purposes.
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func defaultMetrics(sink metrics.MetricSink) *metrics.Metrics {
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// No service name
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config := metrics.DefaultConfig("")
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// No host name
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config.EnableHostname = false
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m, _ := metrics.New(config, sink)
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return m
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}
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func TestClusterLabelPresent(t *testing.T) {
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testClusterName := "test-cluster"
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// Use a ridiculously long time to minimize the chance
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// that we have to deal with more than one interval.
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// InMemSink rounds down to an interval boundary rather than
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// starting one at the time of initialization.
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inmemSink := metrics.NewInmemSink(
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1000000*time.Hour,
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2000000*time.Hour)
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clusterSink := NewClusterMetricSink(testClusterName, defaultMetrics(inmemSink))
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key1 := []string{"aaa", "bbb"}
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key2 := []string{"ccc", "ddd"}
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key3 := []string{"eee", "fff"}
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labels1 := []Label{{"dim1", "val1"}}
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labels2 := []Label{{"dim2", "val2"}}
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labels3 := []Label{{"dim3", "val3"}}
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clusterLabel := Label{"cluster", testClusterName}
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expectedKey1 := "aaa.bbb;dim1=val1;cluster=" + testClusterName
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expectedKey2 := "ccc.ddd;dim2=val2;cluster=" + testClusterName
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expectedKey3 := "eee.fff;dim3=val3;cluster=" + testClusterName
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clusterSink.SetGaugeWithLabels(key1, 1.0, labels1)
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clusterSink.IncrCounterWithLabels(key2, 2.0, labels2)
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clusterSink.AddSampleWithLabels(key3, 3.0, labels3)
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intervals := inmemSink.Data()
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// If we start very close to the end of an interval, then our metrics might be
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// split across two different buckets. We won't write the code to try to handle that.
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// 100000-hours = at most once every 4167 days
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if len(intervals) > 1 {
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t.Skip("Detected interval crossing.")
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}
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// Check Gauge
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g, ok := intervals[0].Gauges[expectedKey1]
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if !ok {
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t.Fatal("Key", expectedKey1, "not found in map", intervals[0].Gauges)
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}
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if g.Value != 1.0 {
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t.Error("Gauge value", g.Value, "does not match", 1.0)
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}
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if !isLabelPresent(labels1[0], g.Labels) {
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t.Error("Gauge label", g.Labels, "does not include", labels1)
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}
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if !isLabelPresent(clusterLabel, g.Labels) {
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t.Error("Gauge label", g.Labels, "does not include", clusterLabel)
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}
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// Check Counter
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c, ok := intervals[0].Counters[expectedKey2]
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if !ok {
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t.Fatal("Key", expectedKey2, "not found in map", intervals[0].Counters)
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}
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if c.Sum != 2.0 {
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t.Error("Counter value", c.Sum, "does not match", 2.0)
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}
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if !isLabelPresent(labels2[0], c.Labels) {
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t.Error("Counter label", c.Labels, "does not include", labels2)
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}
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if !isLabelPresent(clusterLabel, c.Labels) {
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t.Error("Counter label", c.Labels, "does not include", clusterLabel)
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}
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// Check Sample
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s, ok := intervals[0].Samples[expectedKey3]
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if !ok {
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t.Fatal("Key", expectedKey3, "not found in map", intervals[0].Samples)
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}
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if s.Sum != 3.0 {
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t.Error("Sample value", s.Sum, "does not match", 3.0)
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}
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if !isLabelPresent(labels3[0], s.Labels) {
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t.Error("Sample label", s.Labels, "does not include", labels3)
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}
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if !isLabelPresent(clusterLabel, s.Labels) {
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t.Error("Sample label", s.Labels, "does not include", clusterLabel)
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}
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}
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