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ruler_test.go
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package base
import (
"context"
"errors"
"fmt"
"io"
"math/rand"
"net/http"
"net/http/httptest"
"net/url"
"os"
"reflect"
"sort"
"strings"
"sync"
"testing"
"time"
"unsafe"
"github.com/go-kit/log"
"github.com/go-kit/log/level"
"github.com/gorilla/mux"
"github.com/grafana/dskit/flagext"
"github.com/grafana/dskit/kv"
"github.com/grafana/dskit/kv/consul"
"github.com/grafana/dskit/ring"
"github.com/grafana/dskit/services"
"github.com/grafana/dskit/user"
"github.com/prometheus/client_golang/prometheus"
prom_testutil "github.com/prometheus/client_golang/prometheus/testutil"
"github.com/prometheus/common/model"
"github.com/prometheus/prometheus/model/labels"
"github.com/prometheus/prometheus/model/rulefmt"
"github.com/prometheus/prometheus/notifier"
"github.com/prometheus/prometheus/promql"
promRules "github.com/prometheus/prometheus/rules"
"github.com/prometheus/prometheus/storage"
"github.com/prometheus/prometheus/util/annotations"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.uber.org/atomic"
"google.golang.org/grpc"
"gopkg.in/yaml.v2"
"github.com/grafana/dskit/tenant"
"github.com/grafana/loki/v3/pkg/logproto"
"github.com/grafana/loki/v3/pkg/querier/series"
"github.com/grafana/loki/v3/pkg/ruler/config"
"github.com/grafana/loki/v3/pkg/ruler/rulespb"
"github.com/grafana/loki/v3/pkg/ruler/rulestore"
"github.com/grafana/loki/v3/pkg/ruler/rulestore/objectclient"
loki_storage "github.com/grafana/loki/v3/pkg/storage"
"github.com/grafana/loki/v3/pkg/storage/chunk/client/hedging"
"github.com/grafana/loki/v3/pkg/storage/chunk/client/testutils"
"github.com/grafana/loki/v3/pkg/util"
"github.com/grafana/loki/v3/pkg/util/constants"
)
func defaultRulerConfig(t testing.TB, store rulestore.RuleStore) Config {
t.Helper()
// Create a new temporary directory for the rules, so that
// each test will run in isolation.
rulesDir := t.TempDir()
codec := ring.GetCodec()
consul, closer := consul.NewInMemoryClient(codec, log.NewNopLogger(), nil)
t.Cleanup(func() { assert.NoError(t, closer.Close()) })
cfg := Config{}
flagext.DefaultValues(&cfg)
cfg.RulePath = rulesDir
cfg.StoreConfig.mock = store
cfg.Ring.KVStore.Mock = consul
cfg.Ring.NumTokens = 1
cfg.Ring.ListenPort = 0
cfg.Ring.InstanceAddr = "localhost"
cfg.Ring.InstanceID = "localhost"
cfg.EnableQueryStats = false
return cfg
}
type ruleLimits struct {
tenantShard int
maxRulesPerRuleGroup int
maxRuleGroups int
alertManagerConfig map[string]*config.AlertManagerConfig
}
func (r ruleLimits) RulerTenantShardSize(_ string) int {
return r.tenantShard
}
func (r ruleLimits) RulerMaxRuleGroupsPerTenant(_ string) int {
return r.maxRuleGroups
}
func (r ruleLimits) RulerMaxRulesPerRuleGroup(_ string) int {
return r.maxRulesPerRuleGroup
}
func (r ruleLimits) RulerAlertManagerConfig(tenantID string) *config.AlertManagerConfig {
return r.alertManagerConfig[tenantID]
}
func testQueryableFunc(q storage.Querier) storage.QueryableFunc {
if q != nil {
return func(_, _ int64) (storage.Querier, error) {
return q, nil
}
}
return func(_, _ int64) (storage.Querier, error) {
return storage.NoopQuerier(), nil
}
}
func testSetup(t *testing.T, q storage.Querier) (*promql.Engine, storage.QueryableFunc, Pusher, log.Logger, RulesLimits, prometheus.Registerer) {
dir := t.TempDir()
tracker := promql.NewActiveQueryTracker(dir, 20, log.NewNopLogger())
engine := promql.NewEngine(promql.EngineOpts{
MaxSamples: 1e6,
ActiveQueryTracker: tracker,
Timeout: 2 * time.Minute,
})
// Mock the pusher
pusher := newPusherMock()
pusher.MockPush(&logproto.WriteResponse{}, nil)
l := log.NewLogfmtLogger(os.Stdout)
l = level.NewFilter(l, level.AllowInfo())
reg := prometheus.NewRegistry()
queryable := testQueryableFunc(q)
return engine, queryable, pusher, l, ruleLimits{maxRuleGroups: 20, maxRulesPerRuleGroup: 15}, reg
}
func newManager(t *testing.T, cfg Config, q storage.Querier) *DefaultMultiTenantManager {
engine, queryable, pusher, logger, overrides, reg := testSetup(t, q)
manager, err := NewDefaultMultiTenantManager(cfg, DefaultTenantManagerFactory(cfg, pusher, queryable, engine, nil, constants.Loki), reg, logger, overrides, constants.Loki)
require.NoError(t, err)
return manager
}
func newMultiTenantManager(t *testing.T, cfg Config, q storage.Querier, amConf map[string]*config.AlertManagerConfig) *DefaultMultiTenantManager {
engine, queryable, pusher, logger, _, reg := testSetup(t, q)
overrides := ruleLimits{maxRuleGroups: 20, maxRulesPerRuleGroup: 15}
overrides.alertManagerConfig = amConf
manager, err := NewDefaultMultiTenantManager(cfg, DefaultTenantManagerFactory(cfg, pusher, queryable, engine, nil, constants.Loki), reg, logger, overrides, constants.Loki)
require.NoError(t, err)
return manager
}
type mockRulerClientsPool struct {
ClientsPool
cfg Config
rulerAddrMap map[string]*Ruler
numberOfCalls atomic.Int32
}
type mockRulerClient struct {
ruler *Ruler
numberOfCalls *atomic.Int32
}
func (c *mockRulerClient) Rules(ctx context.Context, in *RulesRequest, _ ...grpc.CallOption) (*RulesResponse, error) {
c.numberOfCalls.Inc()
return c.ruler.Rules(ctx, in)
}
func (p *mockRulerClientsPool) GetClientFor(addr string) (RulerClient, error) {
for _, r := range p.rulerAddrMap {
if r.lifecycler.GetInstanceAddr() == addr {
return &mockRulerClient{
ruler: r,
numberOfCalls: &p.numberOfCalls,
}, nil
}
}
return nil, fmt.Errorf("unable to find ruler for add %s", addr)
}
func newMockClientsPool(cfg Config, logger log.Logger, reg prometheus.Registerer, metricsNamespace string, rulerAddrMap map[string]*Ruler) *mockRulerClientsPool {
return &mockRulerClientsPool{
ClientsPool: newRulerClientPool(cfg.ClientTLSConfig, logger, reg, metricsNamespace),
cfg: cfg,
rulerAddrMap: rulerAddrMap,
}
}
func buildRuler(t *testing.T, rulerConfig Config, q storage.Querier, clientMetrics loki_storage.ClientMetrics, rulerAddrMap map[string]*Ruler) *Ruler {
// validate here instead of newRuler because it is used elsewhere
require.NoError(t, rulerConfig.Validate(log.NewNopLogger()))
engine, queryable, pusher, logger, overrides, reg := testSetup(t, q)
storage, err := NewLegacyRuleStore(rulerConfig.StoreConfig, hedging.Config{}, clientMetrics, promRules.FileLoader{}, log.NewNopLogger())
require.NoError(t, err)
managerFactory := DefaultTenantManagerFactory(rulerConfig, pusher, queryable, engine, reg, constants.Loki)
manager, err := NewDefaultMultiTenantManager(rulerConfig, managerFactory, reg, log.NewNopLogger(), overrides, constants.Loki)
require.NoError(t, err)
ruler, err := newRuler(
rulerConfig,
manager,
reg,
logger,
storage,
overrides,
newMockClientsPool(rulerConfig, logger, reg, constants.Loki, rulerAddrMap),
constants.Loki,
)
require.NoError(t, err)
return ruler
}
func newTestRuler(t *testing.T, rulerConfig Config) *Ruler {
m := loki_storage.NewClientMetrics()
defer m.Unregister()
ruler := buildRuler(t, rulerConfig, nil, m, nil)
require.NoError(t, services.StartAndAwaitRunning(context.Background(), ruler))
// Ensure all rules are loaded before usage
ruler.syncRules(context.Background(), rulerSyncReasonInitial)
return ruler
}
var _ MultiTenantManager = &DefaultMultiTenantManager{}
func TestNotifierSendsUserIDHeader(t *testing.T) {
var wg sync.WaitGroup
// We do expect 1 API call for the user create with the getOrCreateNotifier()
wg.Add(1)
ts := httptest.NewServer(http.HandlerFunc(func(_ http.ResponseWriter, r *http.Request) {
userID, _, err := tenant.ExtractTenantIDFromHTTPRequest(r)
assert.NoError(t, err)
assert.Equal(t, userID, "1")
wg.Done()
}))
defer ts.Close()
// We create an empty rule store so that the ruler will not load any rule from it.
cfg := defaultRulerConfig(t, newMockRuleStore(nil))
cfg.AlertmanagerURL = ts.URL
cfg.AlertmanagerDiscovery = false
manager := newManager(t, cfg, nil)
defer manager.Stop()
n, err := manager.getOrCreateNotifier("1")
require.NoError(t, err)
// Loop until notifier discovery syncs up
for len(n.Alertmanagers()) == 0 {
time.Sleep(10 * time.Millisecond)
}
n.Send(¬ifier.Alert{
Labels: labels.Labels{labels.Label{Name: "alertname", Value: "testalert"}},
})
wg.Wait()
// Ensure we have metrics in the notifier.
assert.NoError(t, prom_testutil.GatherAndCompare(manager.registry.(*prometheus.Registry), strings.NewReader(`
# HELP loki_prometheus_notifications_dropped_total Total number of alerts dropped due to errors when sending to Alertmanager.
# TYPE loki_prometheus_notifications_dropped_total counter
loki_prometheus_notifications_dropped_total{user="1"} 0
`), "loki_prometheus_notifications_dropped_total"))
}
func TestMultiTenantsNotifierSendsUserIDHeader(t *testing.T) {
var wg sync.WaitGroup
const tenant1 = "tenant1"
const tenant2 = "tenant2"
// We do expect 2 API calls for the users create with the getOrCreateNotifier()
wg.Add(2)
ts1 := httptest.NewServer(http.HandlerFunc(func(_ http.ResponseWriter, r *http.Request) {
userID, _, err := tenant.ExtractTenantIDFromHTTPRequest(r)
assert.NoError(t, err)
assert.Equal(t, userID, tenant1)
wg.Done()
}))
defer ts1.Close()
ts2 := httptest.NewServer(http.HandlerFunc(func(_ http.ResponseWriter, r *http.Request) {
userID, _, err := tenant.ExtractTenantIDFromHTTPRequest(r)
assert.NoError(t, err)
assert.Equal(t, userID, tenant2)
wg.Done()
}))
defer ts2.Close()
// We create an empty rule store so that the ruler will not load any rule from it.
cfg := defaultRulerConfig(t, newMockRuleStore(nil))
amCfg := map[string]*config.AlertManagerConfig{
tenant1: {
AlertmanagerURL: ts1.URL,
AlertmanagerDiscovery: false,
},
tenant2: {
AlertmanagerURL: ts2.URL,
AlertmanagerDiscovery: false,
},
}
manager := newMultiTenantManager(t, cfg, nil, amCfg)
defer manager.Stop()
n1, err := manager.getOrCreateNotifier(tenant1)
require.NoError(t, err)
n2, err := manager.getOrCreateNotifier(tenant2)
require.NoError(t, err)
// Loop until notifier discovery syncs up
for len(n1.Alertmanagers()) == 0 {
time.Sleep(10 * time.Millisecond)
}
n1.Send(¬ifier.Alert{
Labels: labels.Labels{labels.Label{Name: "alertname1", Value: "testalert1"}},
})
for len(n2.Alertmanagers()) == 0 {
time.Sleep(10 * time.Millisecond)
}
n2.Send(¬ifier.Alert{
Labels: labels.Labels{labels.Label{Name: "alertname2", Value: "testalert2"}},
})
wg.Wait()
// Ensure we have metrics in the notifier.
assert.NoError(t, prom_testutil.GatherAndCompare(manager.registry.(*prometheus.Registry), strings.NewReader(`
# HELP loki_prometheus_notifications_dropped_total Total number of alerts dropped due to errors when sending to Alertmanager.
# TYPE loki_prometheus_notifications_dropped_total counter
loki_prometheus_notifications_dropped_total{user="tenant1"} 0
loki_prometheus_notifications_dropped_total{user="tenant2"} 0
`), "loki_prometheus_notifications_dropped_total"))
}
func TestRuler_Rules(t *testing.T) {
cfg := defaultRulerConfig(t, newMockRuleStore(mockRules))
r := newTestRuler(t, cfg)
defer services.StopAndAwaitTerminated(context.Background(), r) //nolint:errcheck
// test user1
ctx := user.InjectOrgID(context.Background(), "user1")
rls, err := r.Rules(ctx, &RulesRequest{})
require.NoError(t, err)
require.Len(t, rls.Groups, 1)
rg := rls.Groups[0]
expectedRg := mockRules["user1"][0]
compareRuleGroupDescToStateDesc(t, expectedRg, rg)
// test user2
ctx = user.InjectOrgID(context.Background(), "user2")
rls, err = r.Rules(ctx, &RulesRequest{})
require.NoError(t, err)
require.Len(t, rls.Groups, 1)
rg = rls.Groups[0]
expectedRg = mockRules["user2"][0]
compareRuleGroupDescToStateDesc(t, expectedRg, rg)
}
func compareRuleGroupDescToStateDesc(t *testing.T, expected *rulespb.RuleGroupDesc, got *GroupStateDesc) {
require.Equal(t, got.Group.Name, expected.Name)
require.Equal(t, got.Group.Namespace, expected.Namespace)
require.Len(t, expected.Rules, len(got.ActiveRules))
for i := range got.ActiveRules {
require.Equal(t, expected.Rules[i].Record, got.ActiveRules[i].Rule.Record)
require.Equal(t, expected.Rules[i].Alert, got.ActiveRules[i].Rule.Alert)
}
}
func TestGetRules(t *testing.T) {
// ruler ID -> (user ID -> list of groups).
type expectedRulesMap map[string]map[string]rulespb.RuleGroupList
type testCase struct {
sharding bool
shardingStrategy string
shardingAlgo string
shuffleShardSize int
}
allRules := expectedRulesMap{
"ruler1": map[string]rulespb.RuleGroupList{
"user1": {
&rulespb.RuleGroupDesc{User: "user1", Namespace: "namespace", Name: "first", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
&rulespb.RuleGroupDesc{User: "user1", Namespace: "namespace", Name: "second", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
&rulespb.RuleGroupDesc{User: "user1", Namespace: "namespace", Name: "third", Rules: []*rulespb.RuleDesc{createAlertingRule("COUNT_ALERT", `count_over_time({foo="bar"}[5m]) > 0`)}, Interval: 10 * time.Second, Limit: 10},
},
"user2": {
&rulespb.RuleGroupDesc{User: "user2", Namespace: "namespace", Name: "first", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
},
},
"ruler2": map[string]rulespb.RuleGroupList{
"user1": {
&rulespb.RuleGroupDesc{User: "user1", Namespace: "namespace", Name: "fourth", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
},
"user2": {
&rulespb.RuleGroupDesc{User: "user2", Namespace: "namespace", Name: "second", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
&rulespb.RuleGroupDesc{User: "user2", Namespace: "namespace", Name: "third", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
},
"user3": {
&rulespb.RuleGroupDesc{User: "user3", Namespace: "namespace", Name: "first", Rules: []*rulespb.RuleDesc{createAlertingRule("COUNT_ALERT", `count_over_time({foo="bar"}[5m]) > 0`)}, Interval: 10 * time.Second, Limit: 10},
},
},
"ruler3": map[string]rulespb.RuleGroupList{
"user3": {
&rulespb.RuleGroupDesc{User: "user3", Namespace: "namespace", Name: "second", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
},
"user2": {
&rulespb.RuleGroupDesc{User: "user2", Namespace: "namespace", Name: "forth", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
&rulespb.RuleGroupDesc{User: "user2", Namespace: "namespace", Name: "fifth", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
},
},
}
expectedAlertRules := expectedRulesMap{
"ruler1": map[string]rulespb.RuleGroupList{
"user1": {
&rulespb.RuleGroupDesc{User: "user1", Namespace: "namespace", Name: "third", Rules: []*rulespb.RuleDesc{createAlertingRule("COUNT_ALERT", `count_over_time({foo="bar"}[5m]) > 0`)}, Interval: 10 * time.Second, Limit: 10},
},
},
"ruler2": map[string]rulespb.RuleGroupList{
"user3": {
&rulespb.RuleGroupDesc{User: "user3", Namespace: "namespace", Name: "first", Rules: []*rulespb.RuleDesc{createAlertingRule("COUNT_ALERT", `count_over_time({foo="bar"}[5m]) > 0`)}, Interval: 10 * time.Second, Limit: 10},
},
},
"ruler3": map[string]rulespb.RuleGroupList{},
}
expectedRecordingRules := expectedRulesMap{
"ruler1": map[string]rulespb.RuleGroupList{
"user1": {
&rulespb.RuleGroupDesc{User: "user1", Namespace: "namespace", Name: "first", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
&rulespb.RuleGroupDesc{User: "user1", Namespace: "namespace", Name: "second", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
},
"user2": {
&rulespb.RuleGroupDesc{User: "user2", Namespace: "namespace", Name: "first", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
},
},
"ruler2": map[string]rulespb.RuleGroupList{
"user1": {
&rulespb.RuleGroupDesc{User: "user1", Namespace: "namespace", Name: "fourth", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
},
"user2": {
&rulespb.RuleGroupDesc{User: "user2", Namespace: "namespace", Name: "second", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
&rulespb.RuleGroupDesc{User: "user2", Namespace: "namespace", Name: "third", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
},
},
"ruler3": map[string]rulespb.RuleGroupList{
"user3": {
&rulespb.RuleGroupDesc{User: "user3", Namespace: "namespace", Name: "second", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
},
"user2": {
&rulespb.RuleGroupDesc{User: "user2", Namespace: "namespace", Name: "forth", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
&rulespb.RuleGroupDesc{User: "user2", Namespace: "namespace", Name: "fifth", Rules: []*rulespb.RuleDesc{createRecordingRule("COUNT_RULE", `count_over_time({foo="bar"}[5m])`)}, Interval: 10 * time.Second, Limit: 10},
},
},
}
testCases := map[string]testCase{
"No Sharding": {
sharding: false,
},
"Default Sharding": {
sharding: true,
},
"Shuffle Sharding and ShardSize = 2": {
sharding: true,
shuffleShardSize: 2,
shardingStrategy: util.ShardingStrategyShuffle,
},
}
for name, tc := range testCases {
for _, ruleType := range []RulesRequest_RuleType{AnyRule, AlertingRule, RecordingRule} {
t.Run(name+" "+ruleType.String(), func(t *testing.T) {
kvStore, cleanUp := consul.NewInMemoryClient(ring.GetCodec(), log.NewNopLogger(), nil)
t.Cleanup(func() { assert.NoError(t, cleanUp.Close()) })
allRulesByUser := map[string]rulespb.RuleGroupList{}
filteredRulesByUser := map[string]rulespb.RuleGroupList{}
allRulesByRuler := map[string]rulespb.RuleGroupList{}
allTokensByRuler := map[string][]uint32{}
rulerAddrMap := map[string]*Ruler{}
createRuler := func(id string) *Ruler {
cfg := defaultRulerConfig(t, newMockRuleStore(allRulesByUser))
cfg.ShardingStrategy = tc.shardingStrategy
cfg.EnableSharding = tc.sharding
cfg.ShardingAlgo = tc.shardingAlgo
cfg.Ring = RingConfig{
InstanceID: id,
InstanceAddr: id,
KVStore: kv.Config{
Mock: kvStore,
},
}
m := loki_storage.NewClientMetrics()
defer m.Unregister()
r := buildRuler(t, cfg, nil, m, rulerAddrMap)
r.limits = ruleLimits{tenantShard: tc.shuffleShardSize}
rulerAddrMap[id] = r
if r.ring != nil {
require.NoError(t, services.StartAndAwaitRunning(context.Background(), r.ring))
t.Cleanup(r.ring.StopAsync)
}
return r
}
for rID, r := range allRules {
createRuler(rID)
for user, rules := range r {
allRulesByUser[user] = append(allRulesByUser[user], rules...)
allRulesByRuler[rID] = append(allRulesByRuler[rID], rules...)
allTokensByRuler[rID] = generateTokenForGroups(rules, 1)
}
}
var filteredRules expectedRulesMap
switch ruleType {
case AlertingRule:
filteredRules = expectedAlertRules
case RecordingRule:
filteredRules = expectedRecordingRules
default:
filteredRules = allRules
}
for _, r := range filteredRules {
for user, rules := range r {
filteredRulesByUser[user] = append(filteredRulesByUser[user], rules...)
}
}
if tc.sharding {
err := kvStore.CAS(context.Background(), ringKey, func(in interface{}) (out interface{}, retry bool, err error) {
d, _ := in.(*ring.Desc)
if d == nil {
d = ring.NewDesc()
}
for rID, tokens := range allTokensByRuler {
d.AddIngester(rID, rulerAddrMap[rID].lifecycler.GetInstanceAddr(), "", tokens, ring.ACTIVE, time.Now(), false, time.Now())
}
return d, true, nil
})
require.NoError(t, err)
// Wait a bit to make sure ruler's ring is updated.
time.Sleep(100 * time.Millisecond)
}
forEachRuler := func(f func(rID string, r *Ruler)) {
for rID, r := range rulerAddrMap {
f(rID, r)
}
}
// Sync Rules
forEachRuler(func(_ string, r *Ruler) {
r.syncRules(context.Background(), rulerSyncReasonInitial)
})
for u := range filteredRulesByUser {
ctx := user.InjectOrgID(context.Background(), u)
forEachRuler(func(_ string, r *Ruler) {
rules, err := r.GetRules(ctx, &RulesRequest{Filter: ruleType})
require.NoError(t, err)
require.Equal(t, len(filteredRulesByUser[u]), len(rules))
if tc.sharding {
mockPoolClient := r.clientsPool.(*mockRulerClientsPool)
if tc.shardingStrategy == util.ShardingStrategyShuffle {
require.Equal(t, int32(tc.shuffleShardSize), mockPoolClient.numberOfCalls.Load())
} else {
require.Equal(t, int32(len(rulerAddrMap)), mockPoolClient.numberOfCalls.Load())
}
mockPoolClient.numberOfCalls.Store(0)
}
})
}
totalLoadedRules := 0
totalConfiguredRules := 0
forEachRuler(func(rID string, r *Ruler) {
localRules, err := r.listRules(context.Background())
require.NoError(t, err)
for _, rules := range localRules {
totalLoadedRules += len(rules)
}
totalConfiguredRules += len(allRulesByRuler[rID])
})
if tc.sharding {
require.Equal(t, totalConfiguredRules, totalLoadedRules)
} else {
// Not sharding means that all rules will be loaded on all rulers
numberOfRulers := len(rulerAddrMap)
require.Equal(t, totalConfiguredRules*numberOfRulers, totalLoadedRules)
}
})
}
}
}
func TestSharding(t *testing.T) {
const (
user1 = "user1"
user2 = "user2"
user3 = "user3"
)
user1Group1Rule1 := &rulespb.RuleDesc{Record: "user1_group1_rule1", Expr: "1", Labels: logproto.FromLabelsToLabelAdapters(labels.FromStrings("rule", "1"))}
user1Group1Rule2 := &rulespb.RuleDesc{Record: "user1_group1_rule2", Expr: "2", Labels: logproto.FromLabelsToLabelAdapters(labels.FromStrings("rule", "2"))}
user1Group2Rule1 := &rulespb.RuleDesc{Record: "user1_group2_rule1", Expr: "1", Labels: logproto.FromLabelsToLabelAdapters(labels.FromStrings("rule", "1"))}
user1Group1 := &rulespb.RuleGroupDesc{User: user1, Namespace: "namespace", Name: "first", Rules: []*rulespb.RuleDesc{user1Group1Rule1, user1Group1Rule2}}
user1Group2 := &rulespb.RuleGroupDesc{User: user1, Namespace: "namespace", Name: "second", Rules: []*rulespb.RuleDesc{user1Group2Rule1}}
user2Group1Rule1 := &rulespb.RuleDesc{Alert: "User2Group1Alert1", Expr: "1", Labels: logproto.FromLabelsToLabelAdapters(labels.FromStrings("alert", "1"))}
user2Group1Rule2 := &rulespb.RuleDesc{Record: "user2_group1_rule2", Expr: "2", Labels: logproto.FromLabelsToLabelAdapters(labels.FromStrings("rule", "2"))}
user2Group1 := &rulespb.RuleGroupDesc{User: user2, Namespace: "namespace", Name: "first", Rules: []*rulespb.RuleDesc{user2Group1Rule1, user2Group1Rule2}}
user3Group1Rule1 := &rulespb.RuleDesc{Alert: "User3Group1Alert1", Expr: "1", Labels: logproto.FromLabelsToLabelAdapters(labels.FromStrings("alert", "1"))}
user3Group1Rule2 := &rulespb.RuleDesc{Alert: "User3Group1Alert2", Expr: "2", Labels: logproto.FromLabelsToLabelAdapters(labels.FromStrings("alert", "2"))}
user3Group1 := &rulespb.RuleGroupDesc{User: user3, Namespace: "namespace", Name: "first", Rules: []*rulespb.RuleDesc{user3Group1Rule1, user3Group1Rule2}}
// Must be distinct for test to work.
user1Group1Token := tokenForGroup(user1Group1)
user1Group2Token := tokenForGroup(user1Group2)
user2Group1Token := tokenForGroup(user2Group1)
user3Group1Token := tokenForGroup(user3Group1)
user1Group1Rule1Token := tokenForRule(user1Group1, user1Group1Rule1)
user1Group1Rule2Token := tokenForRule(user1Group1, user1Group1Rule2)
user1Group2Rule1Token := tokenForRule(user1Group2, user1Group2Rule1)
user2Group1Rule1Token := tokenForRule(user2Group1, user2Group1Rule1)
user2Group1Rule2Token := tokenForRule(user2Group1, user2Group1Rule2)
user3Group1Rule1Token := tokenForRule(user3Group1, user3Group1Rule1)
user3Group1Rule2Token := tokenForRule(user3Group1, user3Group1Rule2)
noRules := map[string]rulespb.RuleGroupList{}
allRules := map[string]rulespb.RuleGroupList{
user1: {user1Group1, user1Group2},
user2: {user2Group1},
user3: {user3Group1},
}
allRulesSharded := map[string]rulespb.RuleGroupList{
user1: {
cloneGroupWithRule(user1Group1, user1Group1Rule1),
cloneGroupWithRule(user1Group1, user1Group1Rule2),
cloneGroupWithRule(user1Group2, user1Group2Rule1),
},
user2: {
cloneGroupWithRule(user2Group1, user2Group1Rule1),
cloneGroupWithRule(user2Group1, user2Group1Rule2),
},
user3: {
cloneGroupWithRule(user3Group1, user3Group1Rule1),
cloneGroupWithRule(user3Group1, user3Group1Rule2),
},
}
// ruler ID -> (user ID -> list of groups).
type expectedRulesMap map[string]map[string]rulespb.RuleGroupList
type testCase struct {
sharding bool
shardingAlgo string
shardingStrategy string
shuffleShardSize int
setupRing func(*ring.Desc)
enabledUsers []string
disabledUsers []string
expectedRules expectedRulesMap
}
const (
ruler1 = "ruler-1"
ruler1Host = "1.1.1.1"
ruler1Port = 9999
ruler1Addr = "1.1.1.1:9999"
ruler2 = "ruler-2"
ruler2Host = "2.2.2.2"
ruler2Port = 9999
ruler2Addr = "2.2.2.2:9999"
ruler3 = "ruler-3"
ruler3Host = "3.3.3.3"
ruler3Port = 9999
ruler3Addr = "3.3.3.3:9999"
)
testCases := map[string]testCase{
"no sharding": {
sharding: false,
expectedRules: expectedRulesMap{ruler1: allRules},
},
"no sharding, single user allowed": {
sharding: false,
enabledUsers: []string{user1},
expectedRules: expectedRulesMap{ruler1: map[string]rulespb.RuleGroupList{
user1: {user1Group1, user1Group2},
}},
},
"no sharding, single user disabled": {
sharding: false,
disabledUsers: []string{user1},
expectedRules: expectedRulesMap{ruler1: map[string]rulespb.RuleGroupList{
user2: {user2Group1},
user3: {user3Group1},
}},
},
"default sharding, single ruler": {
sharding: true,
shardingStrategy: util.ShardingStrategyDefault,
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", []uint32{0}, ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{ruler1: allRules},
},
"default sharding, single ruler, single enabled user": {
sharding: true,
shardingStrategy: util.ShardingStrategyDefault,
enabledUsers: []string{user1},
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", []uint32{0}, ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{ruler1: map[string]rulespb.RuleGroupList{
user1: {user1Group1, user1Group2},
}},
},
"default sharding, single ruler, single disabled user": {
sharding: true,
shardingStrategy: util.ShardingStrategyDefault,
disabledUsers: []string{user1},
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", []uint32{0}, ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{ruler1: map[string]rulespb.RuleGroupList{
user2: {user2Group1},
user3: {user3Group1},
}},
},
"default sharding, multiple ACTIVE rulers": {
sharding: true,
shardingStrategy: util.ShardingStrategyDefault,
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{user1Group1Token + 1, user2Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
desc.AddIngester(ruler2, ruler2Addr, "", sortTokens([]uint32{user1Group2Token + 1, user3Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{
ruler1: map[string]rulespb.RuleGroupList{
user1: {user1Group1},
user2: {user2Group1},
},
ruler2: map[string]rulespb.RuleGroupList{
user1: {user1Group2},
user3: {user3Group1},
},
},
},
"default sharding, multiple ACTIVE rulers, single enabled user": {
sharding: true,
shardingStrategy: util.ShardingStrategyDefault,
enabledUsers: []string{user1},
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{user1Group1Token + 1, user2Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
desc.AddIngester(ruler2, ruler2Addr, "", sortTokens([]uint32{user1Group2Token + 1, user3Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{
ruler1: map[string]rulespb.RuleGroupList{
user1: {user1Group1},
},
ruler2: map[string]rulespb.RuleGroupList{
user1: {user1Group2},
},
},
},
"default sharding, multiple ACTIVE rulers, single disabled user": {
sharding: true,
shardingStrategy: util.ShardingStrategyDefault,
disabledUsers: []string{user1},
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{user1Group1Token + 1, user2Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
desc.AddIngester(ruler2, ruler2Addr, "", sortTokens([]uint32{user1Group2Token + 1, user3Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{
ruler1: map[string]rulespb.RuleGroupList{
user2: {user2Group1},
},
ruler2: map[string]rulespb.RuleGroupList{
user3: {user3Group1},
},
},
},
"default sharding, unhealthy ACTIVE ruler": {
sharding: true,
shardingStrategy: util.ShardingStrategyDefault,
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{user1Group1Token + 1, user2Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
desc.Ingesters[ruler2] = ring.InstanceDesc{
Addr: ruler2Addr,
Timestamp: time.Now().Add(-time.Hour).Unix(),
State: ring.ACTIVE,
Tokens: sortTokens([]uint32{user1Group2Token + 1, user3Group1Token + 1}),
}
},
expectedRules: expectedRulesMap{
// This ruler doesn't get rules from unhealthy ruler (RF=1).
ruler1: map[string]rulespb.RuleGroupList{
user1: {user1Group1},
user2: {user2Group1},
},
ruler2: noRules,
},
},
"default sharding, LEAVING ruler": {
sharding: true,
shardingStrategy: util.ShardingStrategyDefault,
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{user1Group1Token + 1, user2Group1Token + 1}), ring.LEAVING, time.Now(), false, time.Now())
desc.AddIngester(ruler2, ruler2Addr, "", sortTokens([]uint32{user1Group2Token + 1, user3Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{
// LEAVING ruler doesn't get any rules.
ruler1: noRules,
ruler2: allRules,
},
},
"default sharding, JOINING ruler": {
sharding: true,
shardingStrategy: util.ShardingStrategyDefault,
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{user1Group1Token + 1, user2Group1Token + 1}), ring.JOINING, time.Now(), false, time.Now())
desc.AddIngester(ruler2, ruler2Addr, "", sortTokens([]uint32{user1Group2Token + 1, user3Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{
// JOINING ruler has no rules yet.
ruler1: noRules,
ruler2: allRules,
},
},
"shuffle sharding, single ruler": {
sharding: true,
shardingStrategy: util.ShardingStrategyShuffle,
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{0}), ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{
ruler1: allRules,
},
},
"shuffle sharding, multiple rulers, shard size 1": {
sharding: true,
shardingStrategy: util.ShardingStrategyShuffle,
shuffleShardSize: 1,
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{userToken(user1, 0) + 1, userToken(user2, 0) + 1, userToken(user3, 0) + 1}), ring.ACTIVE, time.Now(), false, time.Now())
desc.AddIngester(ruler2, ruler2Addr, "", sortTokens([]uint32{user1Group1Token + 1, user1Group2Token + 1, user2Group1Token + 1, user3Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{
ruler1: allRules,
ruler2: noRules,
},
},
// Same test as previous one, but with shard size=2. Second ruler gets all the rules.
"shuffle sharding, two rulers, shard size 2": {
sharding: true,
shardingStrategy: util.ShardingStrategyShuffle,
shuffleShardSize: 2,
setupRing: func(desc *ring.Desc) {
// Exact same tokens setup as previous test.
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{userToken(user1, 0) + 1, userToken(user2, 0) + 1, userToken(user3, 0) + 1}), ring.ACTIVE, time.Now(), false, time.Now())
desc.AddIngester(ruler2, ruler2Addr, "", sortTokens([]uint32{user1Group1Token + 1, user1Group2Token + 1, user2Group1Token + 1, user3Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{
ruler1: noRules,
ruler2: allRules,
},
},
"shuffle sharding, two rulers, shard size 1, distributed users": {
sharding: true,
shardingStrategy: util.ShardingStrategyShuffle,
shuffleShardSize: 1,
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{userToken(user1, 0) + 1}), ring.ACTIVE, time.Now(), false, time.Now())
desc.AddIngester(ruler2, ruler2Addr, "", sortTokens([]uint32{userToken(user2, 0) + 1, userToken(user3, 0) + 1}), ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{
ruler1: map[string]rulespb.RuleGroupList{
user1: {user1Group1, user1Group2},
},
ruler2: map[string]rulespb.RuleGroupList{
user2: {user2Group1},
user3: {user3Group1},
},
},
},
"shuffle sharding, three rulers, shard size 2": {
sharding: true,
shardingStrategy: util.ShardingStrategyShuffle,
shuffleShardSize: 2,
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{userToken(user1, 0) + 1, user1Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
desc.AddIngester(ruler2, ruler2Addr, "", sortTokens([]uint32{userToken(user1, 1) + 1, user1Group2Token + 1, userToken(user2, 1) + 1, userToken(user3, 1) + 1}), ring.ACTIVE, time.Now(), false, time.Now())
desc.AddIngester(ruler3, ruler3Addr, "", sortTokens([]uint32{userToken(user2, 0) + 1, userToken(user3, 0) + 1, user2Group1Token + 1, user3Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{
ruler1: map[string]rulespb.RuleGroupList{
user1: {user1Group1},
},
ruler2: map[string]rulespb.RuleGroupList{
user1: {user1Group2},
},
ruler3: map[string]rulespb.RuleGroupList{
user2: {user2Group1},
user3: {user3Group1},
},
},
},
"shuffle sharding, three rulers, shard size 2, ruler2 has no users": {
sharding: true,
shardingStrategy: util.ShardingStrategyShuffle,
shuffleShardSize: 2,
setupRing: func(desc *ring.Desc) {
desc.AddIngester(ruler1, ruler1Addr, "", sortTokens([]uint32{userToken(user1, 0) + 1, userToken(user2, 1) + 1, user1Group1Token + 1, user1Group2Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
desc.AddIngester(ruler2, ruler2Addr, "", sortTokens([]uint32{userToken(user1, 1) + 1, userToken(user3, 1) + 1, user2Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
desc.AddIngester(ruler3, ruler3Addr, "", sortTokens([]uint32{userToken(user2, 0) + 1, userToken(user3, 0) + 1, user3Group1Token + 1}), ring.ACTIVE, time.Now(), false, time.Now())
},
expectedRules: expectedRulesMap{
ruler1: map[string]rulespb.RuleGroupList{
user1: {user1Group1, user1Group2},
},
ruler2: noRules, // Ruler2 owns token for user2group1, but user-2 will only be handled by ruler-1 and 3.