mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-11 14:53:49 +00:00
213 lines
4.6 KiB
Go
213 lines
4.6 KiB
Go
package main
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import (
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"context"
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"sort"
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"testing"
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmalert/config"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmalert/notifier"
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)
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func init() {
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// Disable rand sleep on group start during tests in order to speed up test execution.
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// Rand sleep is needed only in prod code.
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skipRandSleepOnGroupStart = true
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}
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func TestUpdateWith(t *testing.T) {
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testCases := []struct {
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name string
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currentRules []config.Rule
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newRules []config.Rule
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}{
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{
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"new rule",
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nil,
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[]config.Rule{{Alert: "bar"}},
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},
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{
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"update alerting rule",
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[]config.Rule{{
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Alert: "foo",
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Expr: "up > 0",
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For: config.NewPromDuration(time.Second),
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Labels: map[string]string{
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"bar": "baz",
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},
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Annotations: map[string]string{
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"summary": "{{ $value|humanize }}",
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"description": "{{$labels}}",
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},
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}},
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[]config.Rule{{
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Alert: "foo",
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Expr: "up > 10",
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For: config.NewPromDuration(time.Second),
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Labels: map[string]string{
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"baz": "bar",
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},
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Annotations: map[string]string{
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"summary": "none",
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},
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}},
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},
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{
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"update recording rule",
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[]config.Rule{{
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Record: "foo",
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Expr: "max(up)",
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Labels: map[string]string{
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"bar": "baz",
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},
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}},
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[]config.Rule{{
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Record: "foo",
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Expr: "min(up)",
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Labels: map[string]string{
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"baz": "bar",
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},
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}},
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},
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{
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"empty rule",
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[]config.Rule{{Alert: "foo"}, {Record: "bar"}},
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nil,
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},
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{
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"multiple rules",
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[]config.Rule{
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{Alert: "bar"},
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{Alert: "baz"},
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{Alert: "foo"},
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},
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[]config.Rule{
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{Alert: "baz"},
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{Record: "foo"},
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},
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},
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{
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"replace rule",
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[]config.Rule{{Alert: "foo1"}},
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[]config.Rule{{Alert: "foo2"}},
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},
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{
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"replace multiple rules",
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[]config.Rule{
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{Alert: "foo1"},
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{Record: "foo2"},
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{Alert: "foo3"},
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},
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[]config.Rule{
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{Alert: "foo3"},
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{Alert: "foo4"},
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{Record: "foo5"},
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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.name, func(t *testing.T) {
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g := &Group{Name: "test"}
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for _, r := range tc.currentRules {
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r.ID = config.HashRule(r)
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g.Rules = append(g.Rules, g.newRule(r))
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}
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ng := &Group{Name: "test"}
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for _, r := range tc.newRules {
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r.ID = config.HashRule(r)
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ng.Rules = append(ng.Rules, ng.newRule(r))
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}
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err := g.updateWith(ng)
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if err != nil {
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t.Fatal(err)
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}
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if len(g.Rules) != len(tc.newRules) {
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t.Fatalf("expected to have %d rules; got: %d",
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len(g.Rules), len(tc.newRules))
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}
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sort.Slice(g.Rules, func(i, j int) bool {
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return g.Rules[i].ID() < g.Rules[j].ID()
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})
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sort.Slice(ng.Rules, func(i, j int) bool {
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return ng.Rules[i].ID() < ng.Rules[j].ID()
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})
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for i, r := range g.Rules {
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got, want := r, ng.Rules[i]
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if got.ID() != want.ID() {
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t.Fatalf("expected to have rule %q; got %q", want, got)
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}
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if err := compareRules(t, got, want); err != nil {
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t.Fatalf("comparsion error: %s", err)
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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 TestGroupStart(t *testing.T) {
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// TODO: make parsing from string instead of file
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groups, err := config.Parse([]string{"config/testdata/rules1-good.rules"}, true, true)
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if err != nil {
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t.Fatalf("failed to parse rules: %s", err)
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}
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const evalInterval = time.Millisecond
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g := newGroup(groups[0], evalInterval, map[string]string{"cluster": "east-1"})
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g.Concurrency = 2
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fn := &fakeNotifier{}
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fs := &fakeQuerier{}
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const inst1, inst2, job = "foo", "bar", "baz"
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m1 := metricWithLabels(t, "instance", inst1, "job", job)
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m2 := metricWithLabels(t, "instance", inst2, "job", job)
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r := g.Rules[0].(*AlertingRule)
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alert1, err := r.newAlert(m1, time.Now())
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if err != nil {
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t.Fatalf("faield to create alert: %s", err)
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}
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alert1.State = notifier.StateFiring
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alert1.ID = hash(m1)
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alert2, err := r.newAlert(m2, time.Now())
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if err != nil {
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t.Fatalf("faield to create alert: %s", err)
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}
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alert2.State = notifier.StateFiring
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alert2.ID = hash(m2)
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finished := make(chan struct{})
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fs.add(m1)
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fs.add(m2)
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go func() {
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g.start(context.Background(), fs, []notifier.Notifier{fn}, nil)
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close(finished)
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}()
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// wait for multiple evals
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time.Sleep(20 * evalInterval)
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gotAlerts := fn.getAlerts()
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expectedAlerts := []notifier.Alert{*alert1, *alert2}
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compareAlerts(t, expectedAlerts, gotAlerts)
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// reset previous data
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fs.reset()
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// and set only one datapoint for response
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fs.add(m1)
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// wait for multiple evals
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time.Sleep(20 * evalInterval)
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gotAlerts = fn.getAlerts()
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expectedAlerts = []notifier.Alert{*alert1}
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compareAlerts(t, expectedAlerts, gotAlerts)
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g.close()
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<-finished
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}
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