mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-29 23:30:04 +01:00
920 lines
28 KiB
Go
920 lines
28 KiB
Go
package main
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import (
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"context"
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"errors"
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"reflect"
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"sort"
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"strings"
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"testing"
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmalert/datasource"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmalert/notifier"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
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)
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func TestAlertingRule_ToTimeSeries(t *testing.T) {
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timestamp := time.Now()
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testCases := []struct {
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rule *AlertingRule
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alert *notifier.Alert
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expTS []prompbmarshal.TimeSeries
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}{
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{
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newTestAlertingRule("instant", 0),
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¬ifier.Alert{State: notifier.StateFiring},
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[]prompbmarshal.TimeSeries{
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newTimeSeries([]float64{1}, []int64{timestamp.UnixNano()}, map[string]string{
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"__name__": alertMetricName,
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alertStateLabel: notifier.StateFiring.String(),
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}),
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},
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},
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{
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newTestAlertingRule("instant extra labels", 0),
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¬ifier.Alert{State: notifier.StateFiring, Labels: map[string]string{
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"job": "foo",
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"instance": "bar",
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}},
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[]prompbmarshal.TimeSeries{
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newTimeSeries([]float64{1}, []int64{timestamp.UnixNano()}, map[string]string{
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"__name__": alertMetricName,
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alertStateLabel: notifier.StateFiring.String(),
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"job": "foo",
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"instance": "bar",
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}),
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},
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},
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{
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newTestAlertingRule("instant labels override", 0),
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¬ifier.Alert{State: notifier.StateFiring, Labels: map[string]string{
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alertStateLabel: "foo",
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"__name__": "bar",
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}},
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[]prompbmarshal.TimeSeries{
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newTimeSeries([]float64{1}, []int64{timestamp.UnixNano()}, map[string]string{
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"__name__": alertMetricName,
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alertStateLabel: notifier.StateFiring.String(),
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}),
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},
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},
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{
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newTestAlertingRule("for", time.Second),
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¬ifier.Alert{State: notifier.StateFiring, ActiveAt: timestamp.Add(time.Second)},
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[]prompbmarshal.TimeSeries{
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newTimeSeries([]float64{1}, []int64{timestamp.UnixNano()}, map[string]string{
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"__name__": alertMetricName,
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alertStateLabel: notifier.StateFiring.String(),
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}),
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newTimeSeries([]float64{float64(timestamp.Add(time.Second).Unix())},
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[]int64{timestamp.UnixNano()},
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map[string]string{
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"__name__": alertForStateMetricName,
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}),
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},
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},
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{
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newTestAlertingRule("for pending", 10*time.Second),
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¬ifier.Alert{State: notifier.StatePending, ActiveAt: timestamp.Add(time.Second)},
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[]prompbmarshal.TimeSeries{
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newTimeSeries([]float64{1}, []int64{timestamp.UnixNano()}, map[string]string{
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"__name__": alertMetricName,
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alertStateLabel: notifier.StatePending.String(),
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}),
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newTimeSeries([]float64{float64(timestamp.Add(time.Second).Unix())},
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[]int64{timestamp.UnixNano()},
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map[string]string{
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"__name__": alertForStateMetricName,
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}),
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},
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},
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}
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for _, tc := range testCases {
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t.Run(tc.rule.Name, func(t *testing.T) {
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tc.rule.alerts[tc.alert.ID] = tc.alert
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tss := tc.rule.toTimeSeries(timestamp.Unix())
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if err := compareTimeSeries(t, tc.expTS, tss); err != nil {
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t.Fatalf("timeseries missmatch: %s", err)
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}
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})
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}
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}
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func TestAlertingRule_Exec(t *testing.T) {
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const defaultStep = 5 * time.Millisecond
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type testAlert struct {
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labels []string
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alert *notifier.Alert
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}
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testCases := []struct {
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rule *AlertingRule
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steps [][]datasource.Metric
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expAlerts []testAlert
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}{
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{
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newTestAlertingRule("empty", 0),
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[][]datasource.Metric{},
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nil,
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},
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{
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newTestAlertingRule("empty labels", 0),
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[][]datasource.Metric{
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{datasource.Metric{Values: []float64{1}, Timestamps: []int64{1}}},
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},
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[]testAlert{
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{alert: ¬ifier.Alert{State: notifier.StateFiring}},
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},
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},
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{
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newTestAlertingRule("single-firing", 0),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StateFiring}},
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},
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},
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{
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newTestAlertingRule("single-firing=>inactive", 0),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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{},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StateInactive}},
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},
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},
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{
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newTestAlertingRule("single-firing=>inactive=>firing", 0),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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{},
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{metricWithLabels(t, "name", "foo")},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StateFiring}},
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},
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},
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{
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newTestAlertingRule("single-firing=>inactive=>firing=>inactive", 0),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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{},
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{metricWithLabels(t, "name", "foo")},
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{},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StateInactive}},
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},
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},
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{
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newTestAlertingRule("single-firing=>inactive=>firing=>inactive=>inactive", 0),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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{},
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{metricWithLabels(t, "name", "foo")},
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{},
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{},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StateInactive}},
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},
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},
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{
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newTestAlertingRule("single-firing=>inactive=>firing=>inactive=>empty=>firing", 0),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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{},
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{metricWithLabels(t, "name", "foo")},
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{},
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{},
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{metricWithLabels(t, "name", "foo")},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StateFiring}},
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},
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},
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{
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newTestAlertingRule("multiple-firing", 0),
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[][]datasource.Metric{
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{
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metricWithLabels(t, "name", "foo"),
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metricWithLabels(t, "name", "foo1"),
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metricWithLabels(t, "name", "foo2"),
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},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StateFiring}},
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{labels: []string{"name", "foo1"}, alert: ¬ifier.Alert{State: notifier.StateFiring}},
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{labels: []string{"name", "foo2"}, alert: ¬ifier.Alert{State: notifier.StateFiring}},
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},
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},
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{
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newTestAlertingRule("multiple-steps-firing", 0),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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{metricWithLabels(t, "name", "foo1")},
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{metricWithLabels(t, "name", "foo2")},
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},
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// 1: fire first alert
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// 2: fire second alert, set first inactive
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// 3: fire third alert, set second inactive
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StateInactive}},
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{labels: []string{"name", "foo1"}, alert: ¬ifier.Alert{State: notifier.StateInactive}},
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{labels: []string{"name", "foo2"}, alert: ¬ifier.Alert{State: notifier.StateFiring}},
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},
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},
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{
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newTestAlertingRule("for-pending", time.Minute),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StatePending}},
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},
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},
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{
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newTestAlertingRule("for-fired", defaultStep),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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{metricWithLabels(t, "name", "foo")},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StateFiring}},
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},
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},
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{
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newTestAlertingRule("for-pending=>empty", time.Second),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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{metricWithLabels(t, "name", "foo")},
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// empty step to reset and delete pending alerts
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{},
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},
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nil,
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},
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{
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newTestAlertingRule("for-pending=>firing=>inactive", defaultStep),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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{metricWithLabels(t, "name", "foo")},
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// empty step to reset pending alerts
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{},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StateInactive}},
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},
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},
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{
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newTestAlertingRule("for-pending=>firing=>inactive=>pending", defaultStep),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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{metricWithLabels(t, "name", "foo")},
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// empty step to reset pending alerts
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{},
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{metricWithLabels(t, "name", "foo")},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StatePending}},
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},
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},
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{
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newTestAlertingRule("for-pending=>firing=>inactive=>pending=>firing", defaultStep),
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[][]datasource.Metric{
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{metricWithLabels(t, "name", "foo")},
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{metricWithLabels(t, "name", "foo")},
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// empty step to reset pending alerts
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{},
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{metricWithLabels(t, "name", "foo")},
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{metricWithLabels(t, "name", "foo")},
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},
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[]testAlert{
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{labels: []string{"name", "foo"}, alert: ¬ifier.Alert{State: notifier.StateFiring}},
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},
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},
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}
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fakeGroup := Group{Name: "TestRule_Exec"}
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for _, tc := range testCases {
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t.Run(tc.rule.Name, func(t *testing.T) {
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fq := &fakeQuerier{}
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tc.rule.q = fq
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tc.rule.GroupID = fakeGroup.ID()
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for _, step := range tc.steps {
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fq.reset()
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fq.add(step...)
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if _, err := tc.rule.Exec(context.TODO(), time.Now(), 0); err != nil {
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t.Fatalf("unexpected err: %s", err)
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}
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// artificial delay between applying steps
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time.Sleep(defaultStep)
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}
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if len(tc.rule.alerts) != len(tc.expAlerts) {
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t.Fatalf("expected %d alerts; got %d", len(tc.expAlerts), len(tc.rule.alerts))
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}
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expAlerts := make(map[uint64]*notifier.Alert)
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for _, ta := range tc.expAlerts {
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labels := make(map[string]string)
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for i := 0; i < len(ta.labels); i += 2 {
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k, v := ta.labels[i], ta.labels[i+1]
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labels[k] = v
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}
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labels[alertNameLabel] = tc.rule.Name
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h := hash(labels)
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expAlerts[h] = ta.alert
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}
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for key, exp := range expAlerts {
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got, ok := tc.rule.alerts[key]
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if !ok {
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t.Fatalf("expected to have key %d", key)
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}
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if got.State != exp.State {
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t.Fatalf("expected state %d; got %d", exp.State, got.State)
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}
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}
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})
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}
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}
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func TestAlertingRule_ExecRange(t *testing.T) {
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testCases := []struct {
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rule *AlertingRule
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data []datasource.Metric
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expAlerts []*notifier.Alert
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}{
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{
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newTestAlertingRule("empty", 0),
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[]datasource.Metric{},
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nil,
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},
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{
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newTestAlertingRule("empty labels", 0),
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[]datasource.Metric{
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{Values: []float64{1}, Timestamps: []int64{1}},
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},
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[]*notifier.Alert{
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{State: notifier.StateFiring},
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},
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},
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{
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newTestAlertingRule("single-firing", 0),
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[]datasource.Metric{
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metricWithLabels(t, "name", "foo"),
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},
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[]*notifier.Alert{
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{
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Labels: map[string]string{"name": "foo"},
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State: notifier.StateFiring,
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},
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},
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},
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{
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newTestAlertingRule("single-firing-on-range", 0),
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[]datasource.Metric{
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{Values: []float64{1, 1, 1}, Timestamps: []int64{1e3, 2e3, 3e3}},
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},
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[]*notifier.Alert{
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{State: notifier.StateFiring},
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{State: notifier.StateFiring},
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{State: notifier.StateFiring},
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},
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},
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{
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newTestAlertingRule("for-pending", time.Second),
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[]datasource.Metric{
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{Values: []float64{1, 1, 1}, Timestamps: []int64{1, 3, 5}},
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},
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[]*notifier.Alert{
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{State: notifier.StatePending, ActiveAt: time.Unix(1, 0)},
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{State: notifier.StatePending, ActiveAt: time.Unix(3, 0)},
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{State: notifier.StatePending, ActiveAt: time.Unix(5, 0)},
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},
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},
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{
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newTestAlertingRule("for-firing", 3*time.Second),
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[]datasource.Metric{
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{Values: []float64{1, 1, 1}, Timestamps: []int64{1, 3, 5}},
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},
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[]*notifier.Alert{
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{State: notifier.StatePending, ActiveAt: time.Unix(1, 0)},
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{State: notifier.StatePending, ActiveAt: time.Unix(1, 0)},
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{State: notifier.StateFiring, ActiveAt: time.Unix(1, 0)},
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},
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},
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{
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newTestAlertingRule("for=>pending=>firing=>pending=>firing=>pending", time.Second),
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[]datasource.Metric{
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{Values: []float64{1, 1, 1, 1, 1}, Timestamps: []int64{1, 2, 5, 6, 20}},
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},
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[]*notifier.Alert{
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{State: notifier.StatePending, ActiveAt: time.Unix(1, 0)},
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{State: notifier.StateFiring, ActiveAt: time.Unix(1, 0)},
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{State: notifier.StatePending, ActiveAt: time.Unix(5, 0)},
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{State: notifier.StateFiring, ActiveAt: time.Unix(5, 0)},
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{State: notifier.StatePending, ActiveAt: time.Unix(20, 0)},
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},
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},
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{
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newTestAlertingRule("multi-series-for=>pending=>pending=>firing", 3*time.Second),
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[]datasource.Metric{
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{Values: []float64{1, 1, 1}, Timestamps: []int64{1, 3, 5}},
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{Values: []float64{1, 1}, Timestamps: []int64{1, 5},
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Labels: []datasource.Label{{Name: "foo", Value: "bar"}},
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},
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},
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[]*notifier.Alert{
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{State: notifier.StatePending, ActiveAt: time.Unix(1, 0)},
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{State: notifier.StatePending, ActiveAt: time.Unix(1, 0)},
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{State: notifier.StateFiring, ActiveAt: time.Unix(1, 0)},
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//
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{State: notifier.StatePending, ActiveAt: time.Unix(1, 0),
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Labels: map[string]string{
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"foo": "bar",
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}},
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{State: notifier.StatePending, ActiveAt: time.Unix(5, 0),
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Labels: map[string]string{
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"foo": "bar",
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}},
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},
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},
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{
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newTestRuleWithLabels("multi-series-firing", "source", "vm"),
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[]datasource.Metric{
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{Values: []float64{1, 1}, Timestamps: []int64{1, 100}},
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{Values: []float64{1, 1}, Timestamps: []int64{1, 5},
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Labels: []datasource.Label{{Name: "foo", Value: "bar"}},
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},
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},
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[]*notifier.Alert{
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{State: notifier.StateFiring, Labels: map[string]string{
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"source": "vm",
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}},
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{State: notifier.StateFiring, Labels: map[string]string{
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"source": "vm",
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}},
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//
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{State: notifier.StateFiring, Labels: map[string]string{
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"foo": "bar",
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"source": "vm",
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}},
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{State: notifier.StateFiring, Labels: map[string]string{
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"foo": "bar",
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"source": "vm",
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}},
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},
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},
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}
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fakeGroup := Group{Name: "TestRule_ExecRange"}
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for _, tc := range testCases {
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t.Run(tc.rule.Name, func(t *testing.T) {
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fq := &fakeQuerier{}
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tc.rule.q = fq
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tc.rule.GroupID = fakeGroup.ID()
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fq.add(tc.data...)
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gotTS, err := tc.rule.ExecRange(context.TODO(), time.Now(), time.Now())
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if err != nil {
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t.Fatalf("unexpected err: %s", err)
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}
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var expTS []prompbmarshal.TimeSeries
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var j int
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for _, series := range tc.data {
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for _, timestamp := range series.Timestamps {
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a := tc.expAlerts[j]
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if a.Labels == nil {
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a.Labels = make(map[string]string)
|
|
}
|
|
a.Labels[alertNameLabel] = tc.rule.Name
|
|
expTS = append(expTS, tc.rule.alertToTimeSeries(a, timestamp)...)
|
|
j++
|
|
}
|
|
}
|
|
if len(gotTS) != len(expTS) {
|
|
t.Fatalf("expected %d time series; got %d", len(expTS), len(gotTS))
|
|
}
|
|
for i := range expTS {
|
|
got, exp := gotTS[i], expTS[i]
|
|
if !reflect.DeepEqual(got, exp) {
|
|
t.Fatalf("%d: expected \n%v but got \n%v", i, exp, got)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestAlertingRule_Restore(t *testing.T) {
|
|
testCases := []struct {
|
|
rule *AlertingRule
|
|
metrics []datasource.Metric
|
|
expAlerts map[uint64]*notifier.Alert
|
|
}{
|
|
{
|
|
newTestRuleWithLabels("no extra labels"),
|
|
[]datasource.Metric{
|
|
metricWithValueAndLabels(t, float64(time.Now().Truncate(time.Hour).Unix()),
|
|
"__name__", alertForStateMetricName,
|
|
),
|
|
},
|
|
map[uint64]*notifier.Alert{
|
|
hash(nil): {State: notifier.StatePending,
|
|
ActiveAt: time.Now().Truncate(time.Hour)},
|
|
},
|
|
},
|
|
{
|
|
newTestRuleWithLabels("metric labels"),
|
|
[]datasource.Metric{
|
|
metricWithValueAndLabels(t, float64(time.Now().Truncate(time.Hour).Unix()),
|
|
"__name__", alertForStateMetricName,
|
|
alertNameLabel, "metric labels",
|
|
alertGroupNameLabel, "groupID",
|
|
"foo", "bar",
|
|
"namespace", "baz",
|
|
),
|
|
},
|
|
map[uint64]*notifier.Alert{
|
|
hash(map[string]string{
|
|
alertNameLabel: "metric labels",
|
|
alertGroupNameLabel: "groupID",
|
|
"foo": "bar",
|
|
"namespace": "baz",
|
|
}): {State: notifier.StatePending,
|
|
ActiveAt: time.Now().Truncate(time.Hour)},
|
|
},
|
|
},
|
|
{
|
|
newTestRuleWithLabels("rule labels", "source", "vm"),
|
|
[]datasource.Metric{
|
|
metricWithValueAndLabels(t, float64(time.Now().Truncate(time.Hour).Unix()),
|
|
"__name__", alertForStateMetricName,
|
|
"foo", "bar",
|
|
"namespace", "baz",
|
|
// extra labels set by rule
|
|
"source", "vm",
|
|
),
|
|
},
|
|
map[uint64]*notifier.Alert{
|
|
hash(map[string]string{
|
|
"foo": "bar",
|
|
"namespace": "baz",
|
|
"source": "vm",
|
|
}): {State: notifier.StatePending,
|
|
ActiveAt: time.Now().Truncate(time.Hour)},
|
|
},
|
|
},
|
|
{
|
|
newTestRuleWithLabels("multiple alerts"),
|
|
[]datasource.Metric{
|
|
metricWithValueAndLabels(t, float64(time.Now().Truncate(time.Hour).Unix()),
|
|
"__name__", alertForStateMetricName,
|
|
"host", "localhost-1",
|
|
),
|
|
metricWithValueAndLabels(t, float64(time.Now().Truncate(2*time.Hour).Unix()),
|
|
"__name__", alertForStateMetricName,
|
|
"host", "localhost-2",
|
|
),
|
|
metricWithValueAndLabels(t, float64(time.Now().Truncate(3*time.Hour).Unix()),
|
|
"__name__", alertForStateMetricName,
|
|
"host", "localhost-3",
|
|
),
|
|
},
|
|
map[uint64]*notifier.Alert{
|
|
hash(map[string]string{"host": "localhost-1"}): {State: notifier.StatePending,
|
|
ActiveAt: time.Now().Truncate(time.Hour)},
|
|
hash(map[string]string{"host": "localhost-2"}): {State: notifier.StatePending,
|
|
ActiveAt: time.Now().Truncate(2 * time.Hour)},
|
|
hash(map[string]string{"host": "localhost-3"}): {State: notifier.StatePending,
|
|
ActiveAt: time.Now().Truncate(3 * time.Hour)},
|
|
},
|
|
},
|
|
}
|
|
fakeGroup := Group{Name: "TestRule_Exec"}
|
|
for _, tc := range testCases {
|
|
t.Run(tc.rule.Name, func(t *testing.T) {
|
|
fq := &fakeQuerier{}
|
|
tc.rule.GroupID = fakeGroup.ID()
|
|
tc.rule.q = fq
|
|
fq.add(tc.metrics...)
|
|
if err := tc.rule.Restore(context.TODO(), fq, time.Hour, nil); err != nil {
|
|
t.Fatalf("unexpected err: %s", err)
|
|
}
|
|
if len(tc.rule.alerts) != len(tc.expAlerts) {
|
|
t.Fatalf("expected %d alerts; got %d", len(tc.expAlerts), len(tc.rule.alerts))
|
|
}
|
|
for key, exp := range tc.expAlerts {
|
|
got, ok := tc.rule.alerts[key]
|
|
if !ok {
|
|
t.Fatalf("expected to have key %d", key)
|
|
}
|
|
if got.State != exp.State {
|
|
t.Fatalf("expected state %d; got %d", exp.State, got.State)
|
|
}
|
|
if got.ActiveAt != exp.ActiveAt {
|
|
t.Fatalf("expected ActiveAt %v; got %v", exp.ActiveAt, got.ActiveAt)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestAlertingRule_Exec_Negative(t *testing.T) {
|
|
fq := &fakeQuerier{}
|
|
ar := newTestAlertingRule("test", 0)
|
|
ar.Labels = map[string]string{"job": "test"}
|
|
ar.q = fq
|
|
|
|
// successful attempt
|
|
fq.add(metricWithValueAndLabels(t, 1, "__name__", "foo", "job", "bar"))
|
|
_, err := ar.Exec(context.TODO(), time.Now(), 0)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// label `job` will collide with rule extra label and will make both time series equal
|
|
fq.add(metricWithValueAndLabels(t, 1, "__name__", "foo", "job", "baz"))
|
|
_, err = ar.Exec(context.TODO(), time.Now(), 0)
|
|
if !errors.Is(err, errDuplicate) {
|
|
t.Fatalf("expected to have %s error; got %s", errDuplicate, err)
|
|
}
|
|
|
|
fq.reset()
|
|
|
|
expErr := "connection reset by peer"
|
|
fq.setErr(errors.New(expErr))
|
|
_, err = ar.Exec(context.TODO(), time.Now(), 0)
|
|
if err == nil {
|
|
t.Fatalf("expected to get err; got nil")
|
|
}
|
|
if !strings.Contains(err.Error(), expErr) {
|
|
t.Fatalf("expected to get err %q; got %q insterad", expErr, err)
|
|
}
|
|
}
|
|
|
|
func TestAlertingRuleLimit(t *testing.T) {
|
|
fq := &fakeQuerier{}
|
|
ar := newTestAlertingRule("test", 0)
|
|
ar.Labels = map[string]string{"job": "test"}
|
|
ar.q = fq
|
|
ar.For = time.Minute
|
|
testCases := []struct {
|
|
limit int
|
|
err string
|
|
tssNum int
|
|
}{
|
|
{
|
|
limit: 0,
|
|
tssNum: 4,
|
|
},
|
|
{
|
|
limit: -1,
|
|
tssNum: 4,
|
|
},
|
|
{
|
|
limit: 1,
|
|
err: "exec exceeded limit of 1 with 2 alerts",
|
|
tssNum: 0,
|
|
},
|
|
{
|
|
limit: 4,
|
|
tssNum: 4,
|
|
},
|
|
}
|
|
var (
|
|
err error
|
|
timestamp = time.Now()
|
|
)
|
|
fq.add(metricWithValueAndLabels(t, 1, "__name__", "foo", "job", "bar"))
|
|
fq.add(metricWithValueAndLabels(t, 1, "__name__", "foo", "bar", "job"))
|
|
for _, testCase := range testCases {
|
|
_, err = ar.Exec(context.TODO(), timestamp, testCase.limit)
|
|
if err != nil && !strings.EqualFold(err.Error(), testCase.err) {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
fq.reset()
|
|
}
|
|
|
|
func TestAlertingRule_Template(t *testing.T) {
|
|
testCases := []struct {
|
|
rule *AlertingRule
|
|
metrics []datasource.Metric
|
|
expAlerts map[uint64]*notifier.Alert
|
|
}{
|
|
{
|
|
newTestRuleWithLabels("common", "region", "east"),
|
|
[]datasource.Metric{
|
|
metricWithValueAndLabels(t, 1, "instance", "foo"),
|
|
metricWithValueAndLabels(t, 1, "instance", "bar"),
|
|
},
|
|
map[uint64]*notifier.Alert{
|
|
hash(map[string]string{alertNameLabel: "common", "region": "east", "instance": "foo"}): {
|
|
Annotations: map[string]string{},
|
|
Labels: map[string]string{
|
|
alertNameLabel: "common",
|
|
"region": "east",
|
|
"instance": "foo",
|
|
},
|
|
},
|
|
hash(map[string]string{alertNameLabel: "common", "region": "east", "instance": "bar"}): {
|
|
Annotations: map[string]string{},
|
|
Labels: map[string]string{
|
|
alertNameLabel: "common",
|
|
"region": "east",
|
|
"instance": "bar",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
&AlertingRule{
|
|
Name: "override label",
|
|
Labels: map[string]string{
|
|
"instance": "{{ $labels.instance }}",
|
|
},
|
|
Annotations: map[string]string{
|
|
"summary": `{{ $labels.__name__ }}: Too high connection number for "{{ $labels.instance }}"`,
|
|
"description": `{{ $labels.alertname}}: It is {{ $value }} connections for "{{ $labels.instance }}"`,
|
|
},
|
|
alerts: make(map[uint64]*notifier.Alert),
|
|
},
|
|
[]datasource.Metric{
|
|
metricWithValueAndLabels(t, 2, "__name__", "first", "instance", "foo", alertNameLabel, "override"),
|
|
metricWithValueAndLabels(t, 10, "__name__", "second", "instance", "bar", alertNameLabel, "override"),
|
|
},
|
|
map[uint64]*notifier.Alert{
|
|
hash(map[string]string{alertNameLabel: "override label", "instance": "foo"}): {
|
|
Labels: map[string]string{
|
|
alertNameLabel: "override label",
|
|
"instance": "foo",
|
|
},
|
|
Annotations: map[string]string{
|
|
"summary": `first: Too high connection number for "foo"`,
|
|
"description": `override: It is 2 connections for "foo"`,
|
|
},
|
|
},
|
|
hash(map[string]string{alertNameLabel: "override label", "instance": "bar"}): {
|
|
Labels: map[string]string{
|
|
alertNameLabel: "override label",
|
|
"instance": "bar",
|
|
},
|
|
Annotations: map[string]string{
|
|
"summary": `second: Too high connection number for "bar"`,
|
|
"description": `override: It is 10 connections for "bar"`,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
&AlertingRule{
|
|
Name: "OriginLabels",
|
|
GroupName: "Testing",
|
|
Labels: map[string]string{
|
|
"instance": "{{ $labels.instance }}",
|
|
},
|
|
Annotations: map[string]string{
|
|
"summary": `Alert "{{ $labels.alertname }}({{ $labels.alertgroup }})" for instance {{ $labels.instance }}`,
|
|
},
|
|
alerts: make(map[uint64]*notifier.Alert),
|
|
},
|
|
[]datasource.Metric{
|
|
metricWithValueAndLabels(t, 1,
|
|
alertNameLabel, "originAlertname",
|
|
alertGroupNameLabel, "originGroupname",
|
|
"instance", "foo"),
|
|
},
|
|
map[uint64]*notifier.Alert{
|
|
hash(map[string]string{
|
|
alertNameLabel: "OriginLabels",
|
|
alertGroupNameLabel: "Testing",
|
|
"instance": "foo"}): {
|
|
Labels: map[string]string{
|
|
alertNameLabel: "OriginLabels",
|
|
alertGroupNameLabel: "Testing",
|
|
"instance": "foo",
|
|
},
|
|
Annotations: map[string]string{
|
|
"summary": `Alert "originAlertname(originGroupname)" for instance foo`,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
fakeGroup := Group{Name: "TestRule_Exec"}
|
|
for _, tc := range testCases {
|
|
t.Run(tc.rule.Name, func(t *testing.T) {
|
|
fq := &fakeQuerier{}
|
|
tc.rule.GroupID = fakeGroup.ID()
|
|
tc.rule.q = fq
|
|
fq.add(tc.metrics...)
|
|
if _, err := tc.rule.Exec(context.TODO(), time.Now(), 0); err != nil {
|
|
t.Fatalf("unexpected err: %s", err)
|
|
}
|
|
for hash, expAlert := range tc.expAlerts {
|
|
gotAlert := tc.rule.alerts[hash]
|
|
if gotAlert == nil {
|
|
t.Fatalf("alert %d is missing; labels: %v; annotations: %v",
|
|
hash, expAlert.Labels, expAlert.Annotations)
|
|
}
|
|
if !reflect.DeepEqual(expAlert.Annotations, gotAlert.Annotations) {
|
|
t.Fatalf("expected to have annotations %#v; got %#v", expAlert.Annotations, gotAlert.Annotations)
|
|
}
|
|
if !reflect.DeepEqual(expAlert.Labels, gotAlert.Labels) {
|
|
t.Fatalf("expected to have labels %#v; got %#v", expAlert.Labels, gotAlert.Labels)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestAlertsToSend(t *testing.T) {
|
|
ts := time.Now()
|
|
f := func(alerts, expAlerts []*notifier.Alert, resolveDuration, resendDelay time.Duration) {
|
|
t.Helper()
|
|
ar := &AlertingRule{alerts: make(map[uint64]*notifier.Alert)}
|
|
for i, a := range alerts {
|
|
ar.alerts[uint64(i)] = a
|
|
}
|
|
gotAlerts := ar.alertsToSend(ts, resolveDuration, resendDelay)
|
|
if gotAlerts == nil && expAlerts == nil {
|
|
return
|
|
}
|
|
if len(gotAlerts) != len(expAlerts) {
|
|
t.Fatalf("expected to get %d alerts; got %d instead",
|
|
len(expAlerts), len(gotAlerts))
|
|
}
|
|
sort.Slice(expAlerts, func(i, j int) bool {
|
|
return expAlerts[i].Name < expAlerts[j].Name
|
|
})
|
|
sort.Slice(gotAlerts, func(i, j int) bool {
|
|
return gotAlerts[i].Name < gotAlerts[j].Name
|
|
})
|
|
for i, exp := range expAlerts {
|
|
got := gotAlerts[i]
|
|
if got.LastSent != exp.LastSent {
|
|
t.Fatalf("expected LastSent to be %v; got %v", exp.LastSent, got.LastSent)
|
|
}
|
|
if got.End != exp.End {
|
|
t.Fatalf("expected End to be %v; got %v", exp.End, got.End)
|
|
}
|
|
}
|
|
}
|
|
|
|
f( // send firing alert with custom resolve time
|
|
[]*notifier.Alert{{State: notifier.StateFiring}},
|
|
[]*notifier.Alert{{LastSent: ts, End: ts.Add(5 * time.Minute)}},
|
|
5*time.Minute, time.Minute,
|
|
)
|
|
f( // resolve inactive alert at the current timestamp
|
|
[]*notifier.Alert{{State: notifier.StateInactive, ResolvedAt: ts}},
|
|
[]*notifier.Alert{{LastSent: ts, End: ts}},
|
|
time.Minute, time.Minute,
|
|
)
|
|
f( // mixed case of firing and resolved alerts. Names are added for deterministic sorting
|
|
[]*notifier.Alert{{Name: "a", State: notifier.StateFiring}, {Name: "b", State: notifier.StateInactive, ResolvedAt: ts}},
|
|
[]*notifier.Alert{{Name: "a", LastSent: ts, End: ts.Add(5 * time.Minute)}, {Name: "b", LastSent: ts, End: ts}},
|
|
5*time.Minute, time.Minute,
|
|
)
|
|
f( // mixed case of pending and resolved alerts. Names are added for deterministic sorting
|
|
[]*notifier.Alert{{Name: "a", State: notifier.StatePending}, {Name: "b", State: notifier.StateInactive, ResolvedAt: ts}},
|
|
[]*notifier.Alert{{Name: "b", LastSent: ts, End: ts}},
|
|
5*time.Minute, time.Minute,
|
|
)
|
|
f( // attempt to send alert that was already sent in the resendDelay interval
|
|
[]*notifier.Alert{{State: notifier.StateFiring, LastSent: ts.Add(-time.Second)}},
|
|
nil,
|
|
time.Minute, time.Minute,
|
|
)
|
|
f( // attempt to send alert that was sent out of the resendDelay interval
|
|
[]*notifier.Alert{{State: notifier.StateFiring, LastSent: ts.Add(-2 * time.Minute)}},
|
|
[]*notifier.Alert{{LastSent: ts, End: ts.Add(time.Minute)}},
|
|
time.Minute, time.Minute,
|
|
)
|
|
f( // alert must be sent even if resendDelay interval is 0
|
|
[]*notifier.Alert{{State: notifier.StateFiring, LastSent: ts.Add(-time.Second)}},
|
|
[]*notifier.Alert{{LastSent: ts, End: ts.Add(time.Minute)}},
|
|
time.Minute, 0,
|
|
)
|
|
f( // inactive alert which has been sent already
|
|
[]*notifier.Alert{{State: notifier.StateInactive, LastSent: ts.Add(-time.Second), ResolvedAt: ts.Add(-2 * time.Second)}},
|
|
nil,
|
|
time.Minute, time.Minute,
|
|
)
|
|
f( // inactive alert which has been resolved after last send
|
|
[]*notifier.Alert{{State: notifier.StateInactive, LastSent: ts.Add(-time.Second), ResolvedAt: ts}},
|
|
[]*notifier.Alert{{LastSent: ts, End: ts}},
|
|
time.Minute, time.Minute,
|
|
)
|
|
}
|
|
|
|
func newTestRuleWithLabels(name string, labels ...string) *AlertingRule {
|
|
r := newTestAlertingRule(name, 0)
|
|
r.Labels = make(map[string]string)
|
|
for i := 0; i < len(labels); i += 2 {
|
|
r.Labels[labels[i]] = labels[i+1]
|
|
}
|
|
return r
|
|
}
|
|
|
|
func newTestAlertingRule(name string, waitFor time.Duration) *AlertingRule {
|
|
return &AlertingRule{Name: name, alerts: make(map[uint64]*notifier.Alert), For: waitFor, EvalInterval: waitFor}
|
|
}
|