grafana/pkg/services/ngalert/models/testing.go
Yuri Tseretyan 9735a8a080
Alerting: Distinguish conflict violation errors (#86634)
* update generator to set ID = 0 and do not set 0 if unique is needed
* return proper message when the constraint violation
2024-04-22 12:28:46 -04:00

746 lines
20 KiB
Go

package models
import (
"encoding/json"
"fmt"
"math/rand"
"slices"
"sync"
"testing"
"time"
"github.com/google/uuid"
"github.com/grafana/grafana-plugin-sdk-go/data"
"github.com/prometheus/common/model"
"github.com/stretchr/testify/require"
"github.com/grafana/grafana/pkg/expr"
"github.com/grafana/grafana/pkg/services/datasources"
"github.com/grafana/grafana/pkg/services/folder"
"github.com/grafana/grafana/pkg/util"
)
type AlertRuleMutator func(*AlertRule)
// AlertRuleGen provides a factory function that generates a random AlertRule.
// The mutators arguments allows changing fields of the resulting structure
func AlertRuleGen(mutators ...AlertRuleMutator) func() *AlertRule {
return func() *AlertRule {
randNoDataState := func() NoDataState {
s := [...]NoDataState{
Alerting,
NoData,
OK,
}
return s[rand.Intn(len(s))]
}
randErrState := func() ExecutionErrorState {
s := [...]ExecutionErrorState{
AlertingErrState,
ErrorErrState,
OkErrState,
}
return s[rand.Intn(len(s))]
}
interval := (rand.Int63n(6) + 1) * 10
forInterval := time.Duration(interval*rand.Int63n(6)) * time.Second
var annotations map[string]string = nil
if rand.Int63()%2 == 0 {
annotations = GenerateAlertLabels(rand.Intn(5), "ann-")
}
var labels map[string]string = nil
if rand.Int63()%2 == 0 {
labels = GenerateAlertLabels(rand.Intn(5), "lbl-")
}
var dashUID *string = nil
var panelID *int64 = nil
if rand.Int63()%2 == 0 {
d := util.GenerateShortUID()
dashUID = &d
p := rand.Int63n(1500)
panelID = &p
}
var ns []NotificationSettings
if rand.Int63()%2 == 0 {
ns = append(ns, NotificationSettingsGen()())
}
rule := &AlertRule{
ID: 0,
OrgID: rand.Int63n(1500) + 1, // Prevent OrgID=0 as this does not pass alert rule validation.
Title: "TEST-ALERT-" + util.GenerateShortUID(),
Condition: "A",
Data: []AlertQuery{GenerateAlertQuery()},
Updated: time.Now().Add(-time.Duration(rand.Intn(100) + 1)),
IntervalSeconds: rand.Int63n(60) + 1,
Version: rand.Int63n(1500), // Don't generate a rule ID too big for postgres
UID: util.GenerateShortUID(),
NamespaceUID: util.GenerateShortUID(),
DashboardUID: dashUID,
PanelID: panelID,
RuleGroup: "TEST-GROUP-" + util.GenerateShortUID(),
RuleGroupIndex: rand.Intn(1500),
NoDataState: randNoDataState(),
ExecErrState: randErrState(),
For: forInterval,
Annotations: annotations,
Labels: labels,
NotificationSettings: ns,
}
for _, mutator := range mutators {
mutator(rule)
}
return rule
}
}
func WithNotEmptyLabels(count int, prefix string) AlertRuleMutator {
return func(rule *AlertRule) {
rule.Labels = GenerateAlertLabels(count, prefix)
}
}
func WithUniqueID() AlertRuleMutator {
usedID := make(map[int64]struct{})
return func(rule *AlertRule) {
for {
id := rand.Int63n(1500) + 1
if _, ok := usedID[id]; !ok {
usedID[id] = struct{}{}
rule.ID = id
return
}
}
}
}
func WithGroupIndex(groupIndex int) AlertRuleMutator {
return func(rule *AlertRule) {
rule.RuleGroupIndex = groupIndex
}
}
func WithUniqueGroupIndex() AlertRuleMutator {
usedIdx := make(map[int]struct{})
return func(rule *AlertRule) {
for {
idx := rand.Int()
if _, ok := usedIdx[idx]; !ok {
usedIdx[idx] = struct{}{}
rule.RuleGroupIndex = idx
return
}
}
}
}
func WithSequentialGroupIndex() AlertRuleMutator {
idx := 1
return func(rule *AlertRule) {
rule.RuleGroupIndex = idx
idx++
}
}
func WithOrgID(orgId int64) AlertRuleMutator {
return func(rule *AlertRule) {
rule.OrgID = orgId
}
}
func WithUniqueOrgID() AlertRuleMutator {
orgs := map[int64]struct{}{}
return func(rule *AlertRule) {
var orgID int64
for {
orgID = rand.Int63()
if _, ok := orgs[orgID]; !ok {
break
}
}
orgs[orgID] = struct{}{}
rule.OrgID = orgID
}
}
// WithNamespaceUIDNotIn generates a random namespace UID if it is among excluded
func WithNamespaceUIDNotIn(exclude ...string) AlertRuleMutator {
return func(rule *AlertRule) {
for {
if !slices.Contains(exclude, rule.NamespaceUID) {
return
}
rule.NamespaceUID = uuid.NewString()
}
}
}
func WithNamespace(namespace *folder.Folder) AlertRuleMutator {
return func(rule *AlertRule) {
rule.NamespaceUID = namespace.UID
}
}
func WithInterval(interval time.Duration) AlertRuleMutator {
return func(rule *AlertRule) {
rule.IntervalSeconds = int64(interval.Seconds())
}
}
func WithIntervalBetween(min, max int64) AlertRuleMutator {
return func(rule *AlertRule) {
rule.IntervalSeconds = rand.Int63n(max-min) + min
}
}
func WithTitle(title string) AlertRuleMutator {
return func(rule *AlertRule) {
rule.Title = title
}
}
func WithFor(duration time.Duration) AlertRuleMutator {
return func(rule *AlertRule) {
rule.For = duration
}
}
func WithForNTimes(timesOfInterval int64) AlertRuleMutator {
return func(rule *AlertRule) {
rule.For = time.Duration(rule.IntervalSeconds*timesOfInterval) * time.Second
}
}
func WithNoDataExecAs(nodata NoDataState) AlertRuleMutator {
return func(rule *AlertRule) {
rule.NoDataState = nodata
}
}
func WithErrorExecAs(err ExecutionErrorState) AlertRuleMutator {
return func(rule *AlertRule) {
rule.ExecErrState = err
}
}
func WithAnnotations(a data.Labels) AlertRuleMutator {
return func(rule *AlertRule) {
rule.Annotations = a
}
}
func WithAnnotation(key, value string) AlertRuleMutator {
return func(rule *AlertRule) {
if rule.Annotations == nil {
rule.Annotations = data.Labels{}
}
rule.Annotations[key] = value
}
}
func WithLabels(a data.Labels) AlertRuleMutator {
return func(rule *AlertRule) {
rule.Labels = a
}
}
func WithLabel(key, value string) AlertRuleMutator {
return func(rule *AlertRule) {
if rule.Labels == nil {
rule.Labels = data.Labels{}
}
rule.Labels[key] = value
}
}
func WithUniqueUID(knownUids *sync.Map) AlertRuleMutator {
return func(rule *AlertRule) {
uid := rule.UID
for {
_, ok := knownUids.LoadOrStore(uid, struct{}{})
if !ok {
rule.UID = uid
return
}
uid = uuid.NewString()
}
}
}
func WithUniqueTitle(knownTitles *sync.Map) AlertRuleMutator {
return func(rule *AlertRule) {
title := rule.Title
for {
_, ok := knownTitles.LoadOrStore(title, struct{}{})
if !ok {
rule.Title = title
return
}
title = uuid.NewString()
}
}
}
func WithQuery(query ...AlertQuery) AlertRuleMutator {
return func(rule *AlertRule) {
rule.Data = query
if len(query) > 1 {
rule.Condition = query[0].RefID
}
}
}
func WithGroupKey(groupKey AlertRuleGroupKey) AlertRuleMutator {
return func(rule *AlertRule) {
rule.RuleGroup = groupKey.RuleGroup
rule.OrgID = groupKey.OrgID
rule.NamespaceUID = groupKey.NamespaceUID
}
}
func WithNotificationSettingsGen(ns func() NotificationSettings) AlertRuleMutator {
return func(rule *AlertRule) {
rule.NotificationSettings = []NotificationSettings{ns()}
}
}
func WithNoNotificationSettings() AlertRuleMutator {
return func(rule *AlertRule) {
rule.NotificationSettings = nil
}
}
func GenerateAlertLabels(count int, prefix string) data.Labels {
labels := make(data.Labels, count)
for i := 0; i < count; i++ {
labels[prefix+"key-"+util.GenerateShortUID()] = prefix + "value-" + util.GenerateShortUID()
}
return labels
}
func GenerateAlertQuery() AlertQuery {
f := rand.Intn(10) + 5
t := rand.Intn(f)
return AlertQuery{
DatasourceUID: util.GenerateShortUID(),
Model: json.RawMessage(fmt.Sprintf(`{
"%s": "%s",
"%s":"%d"
}`, util.GenerateShortUID(), util.GenerateShortUID(), util.GenerateShortUID(), rand.Int())),
RelativeTimeRange: RelativeTimeRange{
From: Duration(time.Duration(f) * time.Minute),
To: Duration(time.Duration(t) * time.Minute),
},
RefID: util.GenerateShortUID(),
QueryType: util.GenerateShortUID(),
}
}
// GenerateUniqueAlertRules generates many random alert rules and makes sure that they have unique UID.
// It returns a tuple where first element is a map where keys are UID of alert rule and the second element is a slice of the same rules
func GenerateUniqueAlertRules(count int, f func() *AlertRule) (map[string]*AlertRule, []*AlertRule) {
uIDs := make(map[string]*AlertRule, count)
result := make([]*AlertRule, 0, count)
for len(result) < count {
rule := f()
if _, ok := uIDs[rule.UID]; ok {
continue
}
result = append(result, rule)
uIDs[rule.UID] = rule
}
return uIDs, result
}
// GenerateAlertRulesSmallNonEmpty generates 1 to 5 rules using the provided generator
func GenerateAlertRulesSmallNonEmpty(f func() *AlertRule) []*AlertRule {
return GenerateAlertRules(rand.Intn(4)+1, f)
}
// GenerateAlertRules generates many random alert rules. Does not guarantee that rules are unique (by UID)
func GenerateAlertRules(count int, f func() *AlertRule) []*AlertRule {
result := make([]*AlertRule, 0, count)
for len(result) < count {
rule := f()
result = append(result, rule)
}
return result
}
// GenerateRuleKey generates a random alert rule key
func GenerateRuleKey(orgID int64) AlertRuleKey {
return AlertRuleKey{
OrgID: orgID,
UID: util.GenerateShortUID(),
}
}
// GenerateGroupKey generates a random group key
func GenerateGroupKey(orgID int64) AlertRuleGroupKey {
return AlertRuleGroupKey{
OrgID: orgID,
NamespaceUID: util.GenerateShortUID(),
RuleGroup: util.GenerateShortUID(),
}
}
// CopyRule creates a deep copy of AlertRule
func CopyRule(r *AlertRule) *AlertRule {
result := AlertRule{
ID: r.ID,
OrgID: r.OrgID,
Title: r.Title,
Condition: r.Condition,
Updated: r.Updated,
IntervalSeconds: r.IntervalSeconds,
Version: r.Version,
UID: r.UID,
NamespaceUID: r.NamespaceUID,
RuleGroup: r.RuleGroup,
RuleGroupIndex: r.RuleGroupIndex,
NoDataState: r.NoDataState,
ExecErrState: r.ExecErrState,
For: r.For,
}
if r.DashboardUID != nil {
dash := *r.DashboardUID
result.DashboardUID = &dash
}
if r.PanelID != nil {
p := *r.PanelID
result.PanelID = &p
}
for _, d := range r.Data {
q := AlertQuery{
RefID: d.RefID,
QueryType: d.QueryType,
RelativeTimeRange: d.RelativeTimeRange,
DatasourceUID: d.DatasourceUID,
}
q.Model = make([]byte, 0, cap(d.Model))
q.Model = append(q.Model, d.Model...)
result.Data = append(result.Data, q)
}
if r.Annotations != nil {
result.Annotations = make(map[string]string, len(r.Annotations))
for s, s2 := range r.Annotations {
result.Annotations[s] = s2
}
}
if r.Labels != nil {
result.Labels = make(map[string]string, len(r.Labels))
for s, s2 := range r.Labels {
result.Labels[s] = s2
}
}
for _, s := range r.NotificationSettings {
result.NotificationSettings = append(result.NotificationSettings, CopyNotificationSettings(s))
}
return &result
}
func CreateClassicConditionExpression(refID string, inputRefID string, reducer string, operation string, threshold int) AlertQuery {
return AlertQuery{
RefID: refID,
QueryType: expr.DatasourceType,
DatasourceUID: expr.DatasourceUID,
// the format corresponds to model `ClassicConditionJSON` in /pkg/expr/classic/classic.go
Model: json.RawMessage(fmt.Sprintf(`
{
"refId": "%[1]s",
"hide": false,
"type": "classic_conditions",
"datasource": {
"uid": "%[6]s",
"type": "%[7]s"
},
"conditions": [
{
"type": "query",
"evaluator": {
"params": [
%[4]d
],
"type": "%[3]s"
},
"operator": {
"type": "and"
},
"query": {
"params": [
"%[2]s"
]
},
"reducer": {
"params": [],
"type": "%[5]s"
}
}
]
}`, refID, inputRefID, operation, threshold, reducer, expr.DatasourceUID, expr.DatasourceType)),
}
}
func CreateReduceExpression(refID string, inputRefID string, reducer string) AlertQuery {
return AlertQuery{
RefID: refID,
QueryType: expr.DatasourceType,
DatasourceUID: expr.DatasourceUID,
Model: json.RawMessage(fmt.Sprintf(`
{
"refId": "%[1]s",
"hide": false,
"type": "reduce",
"expression": "%[2]s",
"reducer": "%[3]s",
"datasource": {
"uid": "%[4]s",
"type": "%[5]s"
}
}`, refID, inputRefID, reducer, expr.DatasourceUID, expr.DatasourceType)),
}
}
func CreatePrometheusQuery(refID string, expr string, intervalMs int64, maxDataPoints int64, isInstant bool, datasourceUID string) AlertQuery {
return AlertQuery{
RefID: refID,
QueryType: "",
DatasourceUID: datasourceUID,
Model: json.RawMessage(fmt.Sprintf(`
{
"refId": "%[1]s",
"expr": "%[2]s",
"intervalMs": %[3]d,
"maxDataPoints": %[4]d,
"exemplar": false,
"instant": %[5]t,
"range": %[6]t,
"datasource": {
"uid": "%[7]s",
"type": "%[8]s"
}
}`, refID, expr, intervalMs, maxDataPoints, isInstant, !isInstant, datasourceUID, datasources.DS_PROMETHEUS)),
}
}
func CreateLokiQuery(refID string, expr string, intervalMs int64, maxDataPoints int64, queryType string, datasourceUID string) AlertQuery {
return AlertQuery{
RefID: refID,
QueryType: queryType,
DatasourceUID: datasourceUID,
Model: json.RawMessage(fmt.Sprintf(`
{
"refId": "%[1]s",
"expr": "%[2]s",
"intervalMs": %[3]d,
"maxDataPoints": %[4]d,
"queryType": "%[5]s",
"datasource": {
"uid": "%[6]s",
"type": "%[7]s"
}
}`, refID, expr, intervalMs, maxDataPoints, queryType, datasourceUID, datasources.DS_LOKI)),
}
}
func CreateHysteresisExpression(t *testing.T, refID string, inputRefID string, threshold int, recoveryThreshold int) AlertQuery {
t.Helper()
q := AlertQuery{
RefID: refID,
QueryType: expr.DatasourceType,
DatasourceUID: expr.DatasourceUID,
Model: json.RawMessage(fmt.Sprintf(`
{
"refId": "%[1]s",
"type": "threshold",
"datasource": {
"uid": "%[5]s",
"type": "%[6]s"
},
"expression": "%[2]s",
"conditions": [
{
"type": "query",
"evaluator": {
"params": [
%[3]d
],
"type": "gt"
},
"unloadEvaluator": {
"params": [
%[4]d
],
"type": "lt"
}
}
]
}`, refID, inputRefID, threshold, recoveryThreshold, expr.DatasourceUID, expr.DatasourceType)),
}
h, err := q.IsHysteresisExpression()
require.NoError(t, err)
require.Truef(t, h, "test model is expected to be a hysteresis expression")
return q
}
type AlertInstanceMutator func(*AlertInstance)
// AlertInstanceGen provides a factory function that generates a random AlertInstance.
// The mutators arguments allows changing fields of the resulting structure.
func AlertInstanceGen(mutators ...AlertInstanceMutator) *AlertInstance {
var labels map[string]string = nil
if rand.Int63()%2 == 0 {
labels = GenerateAlertLabels(rand.Intn(5), "lbl-")
}
randState := func() InstanceStateType {
s := [...]InstanceStateType{
InstanceStateFiring,
InstanceStateNormal,
InstanceStatePending,
InstanceStateNoData,
InstanceStateError,
}
return s[rand.Intn(len(s))]
}
currentStateSince := time.Now().Add(-time.Duration(rand.Intn(100) + 1))
instance := &AlertInstance{
AlertInstanceKey: AlertInstanceKey{
RuleOrgID: rand.Int63n(1500),
RuleUID: util.GenerateShortUID(),
LabelsHash: util.GenerateShortUID(),
},
Labels: labels,
CurrentState: randState(),
CurrentReason: "TEST-REASON-" + util.GenerateShortUID(),
CurrentStateSince: currentStateSince,
CurrentStateEnd: currentStateSince.Add(time.Duration(rand.Intn(100) + 200)),
LastEvalTime: time.Now().Add(-time.Duration(rand.Intn(100) + 50)),
}
for _, mutator := range mutators {
mutator(instance)
}
return instance
}
type Mutator[T any] func(*T)
// CopyNotificationSettings creates a deep copy of NotificationSettings.
func CopyNotificationSettings(ns NotificationSettings, mutators ...Mutator[NotificationSettings]) NotificationSettings {
c := NotificationSettings{
Receiver: ns.Receiver,
}
if ns.GroupWait != nil {
c.GroupWait = util.Pointer(*ns.GroupWait)
}
if ns.GroupInterval != nil {
c.GroupInterval = util.Pointer(*ns.GroupInterval)
}
if ns.RepeatInterval != nil {
c.RepeatInterval = util.Pointer(*ns.RepeatInterval)
}
if ns.GroupBy != nil {
c.GroupBy = make([]string, len(ns.GroupBy))
copy(c.GroupBy, ns.GroupBy)
}
if ns.MuteTimeIntervals != nil {
c.MuteTimeIntervals = make([]string, len(ns.MuteTimeIntervals))
copy(c.MuteTimeIntervals, ns.MuteTimeIntervals)
}
for _, mutator := range mutators {
mutator(&c)
}
return c
}
// NotificationSettingsGen generates NotificationSettings using a base and mutators.
func NotificationSettingsGen(mutators ...Mutator[NotificationSettings]) func() NotificationSettings {
return func() NotificationSettings {
c := NotificationSettings{
Receiver: util.GenerateShortUID(),
GroupBy: []string{model.AlertNameLabel, FolderTitleLabel, util.GenerateShortUID()},
GroupWait: util.Pointer(model.Duration(time.Duration(rand.Intn(100)+1) * time.Second)),
GroupInterval: util.Pointer(model.Duration(time.Duration(rand.Intn(100)+1) * time.Second)),
RepeatInterval: util.Pointer(model.Duration(time.Duration(rand.Intn(100)+1) * time.Second)),
MuteTimeIntervals: []string{util.GenerateShortUID(), util.GenerateShortUID()},
}
for _, mutator := range mutators {
mutator(&c)
}
return c
}
}
var (
NSMuts = NotificationSettingsMutators{}
)
type NotificationSettingsMutators struct{}
func (n NotificationSettingsMutators) WithReceiver(receiver string) Mutator[NotificationSettings] {
return func(ns *NotificationSettings) {
ns.Receiver = receiver
}
}
func (n NotificationSettingsMutators) WithGroupWait(groupWait *time.Duration) Mutator[NotificationSettings] {
return func(ns *NotificationSettings) {
if groupWait == nil {
ns.GroupWait = nil
return
}
dur := model.Duration(*groupWait)
ns.GroupWait = &dur
}
}
func (n NotificationSettingsMutators) WithGroupInterval(groupInterval *time.Duration) Mutator[NotificationSettings] {
return func(ns *NotificationSettings) {
if groupInterval == nil {
ns.GroupInterval = nil
return
}
dur := model.Duration(*groupInterval)
ns.GroupInterval = &dur
}
}
func (n NotificationSettingsMutators) WithRepeatInterval(repeatInterval *time.Duration) Mutator[NotificationSettings] {
return func(ns *NotificationSettings) {
if repeatInterval == nil {
ns.RepeatInterval = nil
return
}
dur := model.Duration(*repeatInterval)
ns.RepeatInterval = &dur
}
}
func (n NotificationSettingsMutators) WithGroupBy(groupBy ...string) Mutator[NotificationSettings] {
return func(ns *NotificationSettings) {
ns.GroupBy = groupBy
}
}
func (n NotificationSettingsMutators) WithMuteTimeIntervals(muteTimeIntervals ...string) Mutator[NotificationSettings] {
return func(ns *NotificationSettings) {
ns.MuteTimeIntervals = muteTimeIntervals
}
}