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modules.go
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modules.go
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package loki
import (
"context"
"errors"
"fmt"
"hash/fnv"
"math"
"net/http"
"net/http/httputil"
"net/url"
"os"
"strconv"
"strings"
"time"
"github.com/NYTimes/gziphandler"
"github.com/go-kit/log"
"github.com/go-kit/log/level"
"github.com/grafana/dskit/dns"
"github.com/grafana/dskit/kv/codec"
"github.com/grafana/dskit/kv/memberlist"
"github.com/grafana/dskit/middleware"
"github.com/grafana/dskit/ring"
"github.com/grafana/dskit/runtimeconfig"
"github.com/grafana/dskit/server"
"github.com/grafana/dskit/services"
"github.com/grafana/dskit/tenant"
"github.com/grafana/dskit/user"
gerrors "github.com/pkg/errors"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/collectors"
"github.com/prometheus/common/model"
"github.com/prometheus/common/version"
"github.com/grafana/loki/pkg/analytics"
"github.com/grafana/loki/pkg/compactor"
compactorclient "github.com/grafana/loki/pkg/compactor/client"
"github.com/grafana/loki/pkg/compactor/client/grpc"
"github.com/grafana/loki/pkg/compactor/deletion"
"github.com/grafana/loki/pkg/compactor/generationnumber"
"github.com/grafana/loki/pkg/distributor"
"github.com/grafana/loki/pkg/ingester"
"github.com/grafana/loki/pkg/logproto"
"github.com/grafana/loki/pkg/logql"
"github.com/grafana/loki/pkg/lokifrontend/frontend"
"github.com/grafana/loki/pkg/lokifrontend/frontend/transport"
"github.com/grafana/loki/pkg/lokifrontend/frontend/v1/frontendv1pb"
"github.com/grafana/loki/pkg/lokifrontend/frontend/v2/frontendv2pb"
"github.com/grafana/loki/pkg/querier"
"github.com/grafana/loki/pkg/querier/queryrange"
"github.com/grafana/loki/pkg/querier/queryrange/queryrangebase"
"github.com/grafana/loki/pkg/ruler"
base_ruler "github.com/grafana/loki/pkg/ruler/base"
"github.com/grafana/loki/pkg/runtime"
"github.com/grafana/loki/pkg/scheduler"
"github.com/grafana/loki/pkg/scheduler/schedulerpb"
"github.com/grafana/loki/pkg/storage"
"github.com/grafana/loki/pkg/storage/chunk/cache"
"github.com/grafana/loki/pkg/storage/chunk/client"
chunk_util "github.com/grafana/loki/pkg/storage/chunk/client/util"
"github.com/grafana/loki/pkg/storage/config"
"github.com/grafana/loki/pkg/storage/stores/series/index"
"github.com/grafana/loki/pkg/storage/stores/shipper/indexshipper"
"github.com/grafana/loki/pkg/storage/stores/shipper/indexshipper/boltdb"
boltdbcompactor "github.com/grafana/loki/pkg/storage/stores/shipper/indexshipper/boltdb/compactor"
"github.com/grafana/loki/pkg/storage/stores/shipper/indexshipper/indexgateway"
"github.com/grafana/loki/pkg/storage/stores/shipper/indexshipper/tsdb"
"github.com/grafana/loki/pkg/util/httpreq"
"github.com/grafana/loki/pkg/util/limiter"
util_log "github.com/grafana/loki/pkg/util/log"
"github.com/grafana/loki/pkg/util/querylimits"
serverutil "github.com/grafana/loki/pkg/util/server"
"github.com/grafana/loki/pkg/validation"
)
const maxChunkAgeForTableManager = 12 * time.Hour
// The various modules that make up Loki.
const (
Ring string = "ring"
RuntimeConfig string = "runtime-config"
Overrides string = "overrides"
OverridesExporter string = "overrides-exporter"
TenantConfigs string = "tenant-configs"
Server string = "server"
InternalServer string = "internal-server"
Distributor string = "distributor"
Ingester string = "ingester"
Querier string = "querier"
CacheGenerationLoader string = "cache-generation-loader"
IngesterQuerier string = "ingester-querier"
QueryFrontend string = "query-frontend"
QueryFrontendTripperware string = "query-frontend-tripperware"
QueryLimiter string = "query-limiter"
QueryLimitsInterceptors string = "query-limits-interceptors"
QueryLimitsTripperware string = "query-limits-tripper"
RulerStorage string = "ruler-storage"
Ruler string = "ruler"
RuleEvaluator string = "rule-evaluator"
Store string = "store"
TableManager string = "table-manager"
MemberlistKV string = "memberlist-kv"
Compactor string = "compactor"
IndexGateway string = "index-gateway"
IndexGatewayRing string = "index-gateway-ring"
IndexGatewayInterceptors string = "index-gateway-interceptors"
QueryScheduler string = "query-scheduler"
QuerySchedulerRing string = "query-scheduler-ring"
All string = "all"
Read string = "read"
Write string = "write"
Backend string = "backend"
Analytics string = "analytics"
)
func (t *Loki) initServer() (services.Service, error) {
prometheus.MustRegister(version.NewCollector("loki"))
// unregister default go collector
prometheus.Unregister(collectors.NewGoCollector())
// register collector with additional metrics
prometheus.MustRegister(collectors.NewGoCollector(
collectors.WithGoCollectorRuntimeMetrics(collectors.MetricsAll),
))
// Loki handles signals on its own.
DisableSignalHandling(&t.Cfg.Server)
serv, err := server.New(t.Cfg.Server)
if err != nil {
return nil, err
}
t.Server = serv
servicesToWaitFor := func() []services.Service {
svs := []services.Service(nil)
for m, s := range t.serviceMap {
// Server should not wait for itself.
if m != Server {
svs = append(svs, s)
}
}
return svs
}
s := NewServerService(t.Server, servicesToWaitFor)
// Best effort to propagate the org ID from the start.
h := func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if !t.Cfg.AuthEnabled {
next.ServeHTTP(w, r.WithContext(user.InjectOrgID(r.Context(), "fake")))
return
}
_, ctx, _ := user.ExtractOrgIDFromHTTPRequest(r)
next.ServeHTTP(w, r.WithContext(ctx))
})
}(t.Server.HTTPServer.Handler)
t.Server.HTTPServer.Handler = middleware.Merge(serverutil.RecoveryHTTPMiddleware).Wrap(h)
if t.Cfg.Server.HTTPListenPort == 0 {
t.Cfg.Server.HTTPListenPort = portFromAddr(t.Server.HTTPListenAddr().String())
}
if t.Cfg.Server.GRPCListenPort == 0 {
t.Cfg.Server.GRPCListenPort = portFromAddr(t.Server.GRPCListenAddr().String())
}
return s, nil
}
func portFromAddr(addr string) int {
parts := strings.Split(addr, ":")
port := parts[len(parts)-1]
portNumber, err := strconv.Atoi(port)
if err != nil {
return 0
}
return portNumber
}
func (t *Loki) initInternalServer() (services.Service, error) {
// Loki handles signals on its own.
DisableSignalHandling(&t.Cfg.InternalServer.Config)
serv, err := server.New(t.Cfg.InternalServer.Config)
if err != nil {
return nil, err
}
t.InternalServer = serv
servicesToWaitFor := func() []services.Service {
svs := []services.Service(nil)
for m, s := range t.serviceMap {
// Server should not wait for itself.
if m != InternalServer {
svs = append(svs, s)
}
}
return svs
}
s := NewServerService(t.InternalServer, servicesToWaitFor)
return s, nil
}
func (t *Loki) initRing() (_ services.Service, err error) {
t.ring, err = ring.New(t.Cfg.Ingester.LifecyclerConfig.RingConfig, "ingester", ingester.RingKey, util_log.Logger, prometheus.WrapRegistererWithPrefix("cortex_", prometheus.DefaultRegisterer))
if err != nil {
return
}
t.Server.HTTP.Path("/ring").Methods("GET", "POST").Handler(t.ring)
if t.Cfg.InternalServer.Enable {
t.InternalServer.HTTP.Path("/ring").Methods("GET", "POST").Handler(t.ring)
}
return t.ring, nil
}
func (t *Loki) initRuntimeConfig() (services.Service, error) {
if len(t.Cfg.RuntimeConfig.LoadPath) == 0 {
if len(t.Cfg.LimitsConfig.PerTenantOverrideConfig) != 0 {
t.Cfg.RuntimeConfig.LoadPath = []string{t.Cfg.LimitsConfig.PerTenantOverrideConfig}
}
t.Cfg.RuntimeConfig.ReloadPeriod = time.Duration(t.Cfg.LimitsConfig.PerTenantOverridePeriod)
}
if len(t.Cfg.RuntimeConfig.LoadPath) == 0 {
// no need to initialize module if load path is empty
return nil, nil
}
t.Cfg.RuntimeConfig.Loader = loadRuntimeConfig
// make sure to set default limits before we start loading configuration into memory
validation.SetDefaultLimitsForYAMLUnmarshalling(t.Cfg.LimitsConfig)
var err error
t.runtimeConfig, err = runtimeconfig.New(t.Cfg.RuntimeConfig, prometheus.WrapRegistererWithPrefix("loki_", prometheus.DefaultRegisterer), util_log.Logger)
t.TenantLimits = newtenantLimitsFromRuntimeConfig(t.runtimeConfig)
// Update config fields using runtime config. Only if multiKV is used for given ring these returned functions will be
// called and register the listener.
//
// By doing the initialization here instead of per-module init function, we avoid the problem
// of projects based on Loki forgetting the wiring if they override module's init method (they also don't have access to private symbols).
t.Cfg.CompactorConfig.CompactorRing.KVStore.Multi.ConfigProvider = multiClientRuntimeConfigChannel(t.runtimeConfig)
t.Cfg.Distributor.DistributorRing.KVStore.Multi.ConfigProvider = multiClientRuntimeConfigChannel(t.runtimeConfig)
t.Cfg.IndexGateway.Ring.KVStore.Multi.ConfigProvider = multiClientRuntimeConfigChannel(t.runtimeConfig)
t.Cfg.Ingester.LifecyclerConfig.RingConfig.KVStore.Multi.ConfigProvider = multiClientRuntimeConfigChannel(t.runtimeConfig)
t.Cfg.QueryScheduler.SchedulerRing.KVStore.Multi.ConfigProvider = multiClientRuntimeConfigChannel(t.runtimeConfig)
t.Cfg.Ruler.Ring.KVStore.Multi.ConfigProvider = multiClientRuntimeConfigChannel(t.runtimeConfig)
return t.runtimeConfig, err
}
func (t *Loki) initOverrides() (_ services.Service, err error) {
if t.Cfg.LimitsConfig.IndexGatewayShardSize == 0 {
t.Cfg.LimitsConfig.IndexGatewayShardSize = t.Cfg.IndexGateway.Ring.ReplicationFactor
}
t.Overrides, err = validation.NewOverrides(t.Cfg.LimitsConfig, t.TenantLimits)
// overrides are not a service, since they don't have any operational state.
return nil, err
}
func (t *Loki) initOverridesExporter() (services.Service, error) {
if t.Cfg.isModuleEnabled(OverridesExporter) && t.TenantLimits == nil || t.Overrides == nil {
// This target isn't enabled by default ("all") and requires per-tenant limits to run.
return nil, errors.New("overrides-exporter has been enabled, but no runtime configuration file was configured")
}
exporter := validation.NewOverridesExporter(t.Overrides)
prometheus.MustRegister(exporter)
// The overrides-exporter has no state and reads overrides for runtime configuration each time it
// is collected so there is no need to return any service.
return nil, nil
}
func (t *Loki) initTenantConfigs() (_ services.Service, err error) {
t.tenantConfigs, err = runtime.NewTenantConfigs(tenantConfigFromRuntimeConfig(t.runtimeConfig))
// tenantConfigs are not a service, since they don't have any operational state.
return nil, err
}
func (t *Loki) initDistributor() (services.Service, error) {
var err error
t.distributor, err = distributor.New(
t.Cfg.Distributor,
t.Cfg.IngesterClient,
t.tenantConfigs,
t.ring,
t.Overrides,
prometheus.DefaultRegisterer,
)
if err != nil {
return nil, err
}
// Register the distributor to receive Push requests over GRPC
// EXCEPT when running with `-target=all` or `-target=` contains `ingester`
if !t.Cfg.isModuleEnabled(All) && !t.Cfg.isModuleEnabled(Write) && !t.Cfg.isModuleEnabled(Ingester) {
logproto.RegisterPusherServer(t.Server.GRPC, t.distributor)
}
// If the querier module is not part of this process we need to check if multi-tenant queries are enabled.
// If the querier module is part of this process the querier module will configure everything.
if !t.Cfg.isModuleEnabled(Querier) && t.Cfg.Querier.MultiTenantQueriesEnabled {
tenant.WithDefaultResolver(tenant.NewMultiResolver())
}
pushHandler := middleware.Merge(
serverutil.RecoveryHTTPMiddleware,
t.HTTPAuthMiddleware,
).Wrap(http.HandlerFunc(t.distributor.PushHandler))
t.Server.HTTP.Path("/distributor/ring").Methods("GET", "POST").Handler(t.distributor)
if t.Cfg.InternalServer.Enable {
t.InternalServer.HTTP.Path("/distributor/ring").Methods("GET", "POST").Handler(t.distributor)
}
t.Server.HTTP.Path("/api/prom/push").Methods("POST").Handler(pushHandler)
t.Server.HTTP.Path("/loki/api/v1/push").Methods("POST").Handler(pushHandler)
return t.distributor, nil
}
func (t *Loki) initQuerier() (services.Service, error) {
if t.Cfg.Ingester.QueryStoreMaxLookBackPeriod != 0 {
t.Cfg.Querier.IngesterQueryStoreMaxLookback = t.Cfg.Ingester.QueryStoreMaxLookBackPeriod
}
// Querier worker's max concurrent must be the same as the querier setting
t.Cfg.Worker.MaxConcurrent = t.Cfg.Querier.MaxConcurrent
deleteStore, err := t.deleteRequestsClient("querier", t.Overrides)
if err != nil {
return nil, err
}
q, err := querier.New(t.Cfg.Querier, t.Store, t.ingesterQuerier, t.Overrides, deleteStore, prometheus.DefaultRegisterer)
if err != nil {
return nil, err
}
if t.Cfg.Querier.MultiTenantQueriesEnabled {
t.Querier = querier.NewMultiTenantQuerier(q, util_log.Logger)
tenant.WithDefaultResolver(tenant.NewMultiResolver())
} else {
t.Querier = q
}
querierWorkerServiceConfig := querier.WorkerServiceConfig{
AllEnabled: t.Cfg.isModuleEnabled(All),
ReadEnabled: t.Cfg.isModuleEnabled(Read),
GrpcListenAddress: t.Cfg.Server.GRPCListenAddress,
GrpcListenPort: t.Cfg.Server.GRPCListenPort,
QuerierWorkerConfig: &t.Cfg.Worker,
QueryFrontendEnabled: t.Cfg.isModuleEnabled(QueryFrontend),
QuerySchedulerEnabled: t.Cfg.isModuleEnabled(QueryScheduler),
SchedulerRing: scheduler.SafeReadRing(t.querySchedulerRingManager),
}
toMerge := []middleware.Interface{
httpreq.ExtractQueryMetricsMiddleware(),
}
logger := log.With(util_log.Logger, "component", "querier")
t.querierAPI = querier.NewQuerierAPI(t.Cfg.Querier, t.Querier, t.Overrides, logger)
indexStatsHTTPMiddleware := querier.WrapQuerySpanAndTimeout("query.IndexStats", t.querierAPI)
volumeHTTPMiddleware := querier.WrapQuerySpanAndTimeout("query.VolumeInstant", t.querierAPI)
volumeRangeHTTPMiddleware := querier.WrapQuerySpanAndTimeout("query.VolumeRange", t.querierAPI)
if t.supportIndexDeleteRequest() && t.Cfg.CompactorConfig.RetentionEnabled {
toMerge = append(
toMerge,
queryrangebase.CacheGenNumberHeaderSetterMiddleware(t.cacheGenerationLoader),
)
indexStatsHTTPMiddleware = middleware.Merge(
queryrangebase.CacheGenNumberHeaderSetterMiddleware(t.cacheGenerationLoader),
indexStatsHTTPMiddleware,
)
volumeHTTPMiddleware = middleware.Merge(
queryrangebase.CacheGenNumberHeaderSetterMiddleware(t.cacheGenerationLoader),
volumeHTTPMiddleware,
)
volumeRangeHTTPMiddleware = middleware.Merge(
queryrangebase.CacheGenNumberHeaderSetterMiddleware(t.cacheGenerationLoader),
volumeRangeHTTPMiddleware,
)
}
labelsHTTPMiddleware := querier.WrapQuerySpanAndTimeout("query.Label", t.querierAPI)
if t.Cfg.Querier.PerRequestLimitsEnabled {
toMerge = append(
toMerge,
querylimits.NewQueryLimitsMiddleware(log.With(util_log.Logger, "component", "query-limits-middleware")),
)
labelsHTTPMiddleware = middleware.Merge(
querylimits.NewQueryLimitsMiddleware(log.With(util_log.Logger, "component", "query-limits-middleware")),
labelsHTTPMiddleware,
)
}
httpMiddleware := middleware.Merge(toMerge...)
queryHandlers := map[string]http.Handler{
"/loki/api/v1/query_range": middleware.Merge(
httpMiddleware,
querier.WrapQuerySpanAndTimeout("query.RangeQuery", t.querierAPI),
).Wrap(http.HandlerFunc(t.querierAPI.RangeQueryHandler)),
"/loki/api/v1/query": middleware.Merge(
httpMiddleware,
querier.WrapQuerySpanAndTimeout("query.InstantQuery", t.querierAPI),
).Wrap(http.HandlerFunc(t.querierAPI.InstantQueryHandler)),
"/loki/api/v1/label": labelsHTTPMiddleware.Wrap(http.HandlerFunc(t.querierAPI.LabelHandler)),
"/loki/api/v1/labels": labelsHTTPMiddleware.Wrap(http.HandlerFunc(t.querierAPI.LabelHandler)),
"/loki/api/v1/label/{name}/values": labelsHTTPMiddleware.Wrap(http.HandlerFunc(t.querierAPI.LabelHandler)),
"/loki/api/v1/series": querier.WrapQuerySpanAndTimeout("query.Series", t.querierAPI).Wrap(http.HandlerFunc(t.querierAPI.SeriesHandler)),
"/loki/api/v1/index/stats": indexStatsHTTPMiddleware.Wrap(http.HandlerFunc(t.querierAPI.IndexStatsHandler)),
"/loki/api/v1/index/volume": volumeHTTPMiddleware.Wrap(http.HandlerFunc(t.querierAPI.VolumeInstantHandler)),
"/loki/api/v1/index/volume_range": volumeRangeHTTPMiddleware.Wrap(http.HandlerFunc(t.querierAPI.VolumeRangeHandler)),
"/api/prom/query": middleware.Merge(
httpMiddleware,
querier.WrapQuerySpanAndTimeout("query.LogQuery", t.querierAPI),
).Wrap(http.HandlerFunc(t.querierAPI.LogQueryHandler)),
"/api/prom/label": labelsHTTPMiddleware.Wrap(http.HandlerFunc(t.querierAPI.LabelHandler)),
"/api/prom/label/{name}/values": labelsHTTPMiddleware.Wrap(http.HandlerFunc(t.querierAPI.LabelHandler)),
"/api/prom/series": querier.WrapQuerySpanAndTimeout("query.Series", t.querierAPI).Wrap(http.HandlerFunc(t.querierAPI.SeriesHandler)),
}
// We always want to register tail routes externally, tail requests are different from normal queries, they
// are HTTP requests that get upgraded to websocket requests and need to be handled/kept open by the Queriers.
// The frontend has code to proxy these requests, however when running in the same processes
// (such as target=All or target=Read) we don't want the frontend to proxy and instead we want the Queriers
// to directly register these routes.
// In practice this means we always want the queriers to register the tail routes externally, when a querier
// is standalone ALL routes are registered externally, and when it's in the same process as a frontend,
// we disable the proxying of the tail routes in initQueryFrontend() and we still want these routes regiestered
// on the external router.
alwaysExternalHandlers := map[string]http.Handler{
"/loki/api/v1/tail": http.HandlerFunc(t.querierAPI.TailHandler),
"/api/prom/tail": http.HandlerFunc(t.querierAPI.TailHandler),
}
svc, err := querier.InitWorkerService(
querierWorkerServiceConfig,
prometheus.DefaultRegisterer,
t.Cfg.Server.PathPrefix,
queryHandlers,
alwaysExternalHandlers,
t.Server.HTTP,
t.Server.HTTPServer.Handler,
t.HTTPAuthMiddleware,
)
if err != nil {
return nil, err
}
if svc != nil {
svc.AddListener(deleteRequestsStoreListener(deleteStore))
}
return svc, nil
}
func (t *Loki) initIngester() (_ services.Service, err error) {
t.Cfg.Ingester.LifecyclerConfig.ListenPort = t.Cfg.Server.GRPCListenPort
if t.Cfg.Ingester.ShutdownMarkerPath == "" && t.Cfg.Common.PathPrefix != "" {
t.Cfg.Ingester.ShutdownMarkerPath = t.Cfg.Common.PathPrefix
}
if t.Cfg.Ingester.ShutdownMarkerPath == "" {
level.Warn(util_log.Logger).Log("msg", "The config setting shutdown marker path is not set. The /ingester/prepare_shutdown endpoint won't work")
}
t.Ingester, err = ingester.New(t.Cfg.Ingester, t.Cfg.IngesterClient, t.Store, t.Overrides, t.tenantConfigs, prometheus.DefaultRegisterer, t.Cfg.Distributor.WriteFailuresLogging)
if err != nil {
return
}
if t.Cfg.Ingester.Wrapper != nil {
t.Ingester = t.Cfg.Ingester.Wrapper.Wrap(t.Ingester)
}
logproto.RegisterPusherServer(t.Server.GRPC, t.Ingester)
logproto.RegisterQuerierServer(t.Server.GRPC, t.Ingester)
logproto.RegisterStreamDataServer(t.Server.GRPC, t.Ingester)
httpMiddleware := middleware.Merge(
serverutil.RecoveryHTTPMiddleware,
)
t.Server.HTTP.Methods("GET", "POST").Path("/flush").Handler(
httpMiddleware.Wrap(http.HandlerFunc(t.Ingester.FlushHandler)),
)
t.Server.HTTP.Methods("POST", "GET", "DELETE").Path("/ingester/prepare_shutdown").Handler(
httpMiddleware.Wrap(http.HandlerFunc(t.Ingester.PrepareShutdown)),
)
t.Server.HTTP.Methods("POST").Path("/ingester/shutdown").Handler(
httpMiddleware.Wrap(http.HandlerFunc(t.Ingester.ShutdownHandler)),
)
return t.Ingester, nil
}
func (t *Loki) initTableManager() (services.Service, error) {
level.Warn(util_log.Logger).Log("msg", "table manager is deprecated. Consider migrating to tsdb index which relies on a compactor instead.")
err := t.Cfg.SchemaConfig.Load()
if err != nil {
return nil, err
}
// Assume the newest config is the one to use
lastConfig := &t.Cfg.SchemaConfig.Configs[len(t.Cfg.SchemaConfig.Configs)-1]
if (t.Cfg.TableManager.ChunkTables.WriteScale.Enabled ||
t.Cfg.TableManager.IndexTables.WriteScale.Enabled ||
t.Cfg.TableManager.ChunkTables.InactiveWriteScale.Enabled ||
t.Cfg.TableManager.IndexTables.InactiveWriteScale.Enabled ||
t.Cfg.TableManager.ChunkTables.ReadScale.Enabled ||
t.Cfg.TableManager.IndexTables.ReadScale.Enabled ||
t.Cfg.TableManager.ChunkTables.InactiveReadScale.Enabled ||
t.Cfg.TableManager.IndexTables.InactiveReadScale.Enabled) &&
t.Cfg.StorageConfig.AWSStorageConfig.Metrics.URL == "" {
level.Error(util_log.Logger).Log("msg", "WriteScale is enabled but no Metrics URL has been provided")
os.Exit(1)
}
reg := prometheus.WrapRegistererWith(prometheus.Labels{"component": "table-manager-store"}, prometheus.DefaultRegisterer)
tableClient, err := storage.NewTableClient(lastConfig.IndexType, t.Cfg.StorageConfig, t.clientMetrics, reg)
if err != nil {
return nil, err
}
bucketClient, err := storage.NewBucketClient(t.Cfg.StorageConfig)
util_log.CheckFatal("initializing bucket client", err, util_log.Logger)
t.tableManager, err = index.NewTableManager(t.Cfg.TableManager, t.Cfg.SchemaConfig, maxChunkAgeForTableManager, tableClient, bucketClient, nil, prometheus.DefaultRegisterer)
if err != nil {
return nil, err
}
return t.tableManager, nil
}
func (t *Loki) initStore() (services.Service, error) {
// Set configs pertaining to object storage based indices
if config.UsingObjectStorageIndex(t.Cfg.SchemaConfig.Configs) {
t.updateConfigForShipperStore()
err := t.setupAsyncStore()
if err != nil {
return nil, err
}
}
store, err := storage.NewStore(t.Cfg.StorageConfig, t.Cfg.ChunkStoreConfig, t.Cfg.SchemaConfig, t.Overrides, t.clientMetrics, prometheus.DefaultRegisterer, util_log.Logger)
if err != nil {
return nil, err
}
t.Store = store
return services.NewIdleService(nil, func(_ error) error {
t.Store.Stop()
return nil
}), nil
}
func (t *Loki) updateConfigForShipperStore() {
// Always set these configs
t.Cfg.StorageConfig.BoltDBShipperConfig.IndexGatewayClientConfig.Mode = t.Cfg.IndexGateway.Mode
t.Cfg.StorageConfig.TSDBShipperConfig.IndexGatewayClientConfig.Mode = t.Cfg.IndexGateway.Mode
if t.Cfg.IndexGateway.Mode == indexgateway.RingMode {
t.Cfg.StorageConfig.BoltDBShipperConfig.IndexGatewayClientConfig.Ring = t.indexGatewayRingManager.Ring
t.Cfg.StorageConfig.TSDBShipperConfig.IndexGatewayClientConfig.Ring = t.indexGatewayRingManager.Ring
}
t.Cfg.StorageConfig.BoltDBShipperConfig.IngesterName = t.Cfg.Ingester.LifecyclerConfig.ID
t.Cfg.StorageConfig.TSDBShipperConfig.IngesterName = t.Cfg.Ingester.LifecyclerConfig.ID
// If RF > 1 and current or upcoming index type is boltdb-shipper then disable index dedupe and write dedupe cache.
// This is to ensure that index entries are replicated to all the boltdb files in ingesters flushing replicated data.
if t.Cfg.Ingester.LifecyclerConfig.RingConfig.ReplicationFactor > 1 {
t.Cfg.ChunkStoreConfig.DisableIndexDeduplication = true
t.Cfg.ChunkStoreConfig.WriteDedupeCacheConfig = cache.Config{}
}
switch true {
case t.Cfg.isModuleEnabled(Ingester), t.Cfg.isModuleEnabled(Write):
// Use embedded cache for caching index in memory, this also significantly helps performance.
t.Cfg.StorageConfig.IndexQueriesCacheConfig = cache.Config{
EmbeddedCache: cache.EmbeddedCacheConfig{
Enabled: true,
MaxSizeMB: 200,
// This is a small hack to save some CPU cycles.
// We check if the object is still valid after pulling it from cache using the IndexCacheValidity value
// however it has to be deserialized to do so, setting the cache validity to some arbitrary amount less than the
// IndexCacheValidity guarantees the Embedded cache will expire the object first which can be done without
// having to deserialize the object.
TTL: t.Cfg.StorageConfig.IndexCacheValidity - 1*time.Minute,
},
}
// Force the retain period to be longer than the IndexCacheValidity used in the store, this guarantees we don't
// have query gaps on chunks flushed after an index entry is cached by keeping them retained in the ingester
// and queried as part of live data until the cache TTL expires on the index entry.
t.Cfg.Ingester.RetainPeriod = t.Cfg.StorageConfig.IndexCacheValidity + 1*time.Minute
// We do not want ingester to unnecessarily keep downloading files
t.Cfg.StorageConfig.BoltDBShipperConfig.Mode = indexshipper.ModeWriteOnly
t.Cfg.StorageConfig.BoltDBShipperConfig.IngesterDBRetainPeriod = shipperQuerierIndexUpdateDelay(t.Cfg.StorageConfig.IndexCacheValidity, t.Cfg.StorageConfig.BoltDBShipperConfig.ResyncInterval)
t.Cfg.StorageConfig.TSDBShipperConfig.Mode = indexshipper.ModeWriteOnly
t.Cfg.StorageConfig.TSDBShipperConfig.IngesterDBRetainPeriod = shipperQuerierIndexUpdateDelay(t.Cfg.StorageConfig.IndexCacheValidity, t.Cfg.StorageConfig.TSDBShipperConfig.ResyncInterval)
case t.Cfg.isModuleEnabled(Querier), t.Cfg.isModuleEnabled(Ruler), t.Cfg.isModuleEnabled(Read), t.Cfg.isModuleEnabled(Backend), t.isModuleActive(IndexGateway):
// We do not want query to do any updates to index
t.Cfg.StorageConfig.BoltDBShipperConfig.Mode = indexshipper.ModeReadOnly
t.Cfg.StorageConfig.TSDBShipperConfig.Mode = indexshipper.ModeReadOnly
default:
// All other targets use the shipper store in RW mode
t.Cfg.StorageConfig.BoltDBShipperConfig.Mode = indexshipper.ModeReadWrite
t.Cfg.StorageConfig.BoltDBShipperConfig.IngesterDBRetainPeriod = shipperQuerierIndexUpdateDelay(t.Cfg.StorageConfig.IndexCacheValidity, t.Cfg.StorageConfig.BoltDBShipperConfig.ResyncInterval)
t.Cfg.StorageConfig.TSDBShipperConfig.Mode = indexshipper.ModeReadWrite
t.Cfg.StorageConfig.TSDBShipperConfig.IngesterDBRetainPeriod = shipperQuerierIndexUpdateDelay(t.Cfg.StorageConfig.IndexCacheValidity, t.Cfg.StorageConfig.TSDBShipperConfig.ResyncInterval)
}
}
func (t *Loki) setupAsyncStore() error {
var asyncStore bool
shipperConfigIdx := config.ActivePeriodConfig(t.Cfg.SchemaConfig.Configs)
iTy := t.Cfg.SchemaConfig.Configs[shipperConfigIdx].IndexType
if iTy != config.BoltDBShipperType && iTy != config.TSDBType {
shipperConfigIdx++
}
// TODO(owen-d): make helper more agnostic between boltdb|tsdb
var resyncInterval time.Duration
switch t.Cfg.SchemaConfig.Configs[shipperConfigIdx].IndexType {
case config.BoltDBShipperType:
resyncInterval = t.Cfg.StorageConfig.BoltDBShipperConfig.ResyncInterval
case config.TSDBType:
resyncInterval = t.Cfg.StorageConfig.TSDBShipperConfig.ResyncInterval
}
minIngesterQueryStoreDuration := shipperMinIngesterQueryStoreDuration(
t.Cfg.Ingester.MaxChunkAge,
shipperQuerierIndexUpdateDelay(
t.Cfg.StorageConfig.IndexCacheValidity,
resyncInterval,
),
)
switch true {
case t.Cfg.isModuleEnabled(Querier), t.Cfg.isModuleEnabled(Ruler), t.Cfg.isModuleEnabled(Read):
// Do not use the AsyncStore if the querier is configured with QueryStoreOnly set to true
if t.Cfg.Querier.QueryStoreOnly {
break
}
// Use AsyncStore to query both ingesters local store and chunk store for store queries.
// Only queriers should use the AsyncStore, it should never be used in ingesters.
asyncStore = true
// The legacy Read target includes the index gateway, so disable the index-gateway client in that configuration.
if t.Cfg.LegacyReadTarget && t.Cfg.isModuleEnabled(Read) {
t.Cfg.StorageConfig.BoltDBShipperConfig.IndexGatewayClientConfig.Disabled = true
t.Cfg.StorageConfig.TSDBShipperConfig.IndexGatewayClientConfig.Disabled = true
}
// Backend target includes the index gateway
case t.Cfg.isModuleEnabled(IndexGateway), t.Cfg.isModuleEnabled(Backend):
// we want to use the actual storage when running the index-gateway, so we remove the Addr from the config
t.Cfg.StorageConfig.BoltDBShipperConfig.IndexGatewayClientConfig.Disabled = true
t.Cfg.StorageConfig.TSDBShipperConfig.IndexGatewayClientConfig.Disabled = true
case t.Cfg.isModuleEnabled(All):
// We want ingester to also query the store when using boltdb-shipper but only when running with target All.
// We do not want to use AsyncStore otherwise it would start spiraling around doing queries over and over again to the ingesters and store.
// ToDo: See if we can avoid doing this when not running loki in clustered mode.
t.Cfg.Ingester.QueryStore = true
mlb, err := calculateMaxLookBack(
t.Cfg.SchemaConfig.Configs[shipperConfigIdx],
t.Cfg.Ingester.QueryStoreMaxLookBackPeriod,
minIngesterQueryStoreDuration,
)
if err != nil {
return err
}
t.Cfg.Ingester.QueryStoreMaxLookBackPeriod = mlb
}
if asyncStore {
t.Cfg.StorageConfig.EnableAsyncStore = true
t.Cfg.StorageConfig.AsyncStoreConfig = storage.AsyncStoreCfg{
IngesterQuerier: t.ingesterQuerier,
QueryIngestersWithin: calculateAsyncStoreQueryIngestersWithin(
t.Cfg.Querier.QueryIngestersWithin,
minIngesterQueryStoreDuration,
),
}
}
return nil
}
func (t *Loki) initIngesterQuerier() (_ services.Service, err error) {
t.ingesterQuerier, err = querier.NewIngesterQuerier(t.Cfg.IngesterClient, t.ring, t.Cfg.Querier.ExtraQueryDelay)
if err != nil {
return nil, err
}
return services.NewIdleService(nil, nil), nil
}
// Placeholder limits type to pass to cortex frontend
type disabledShuffleShardingLimits struct{}
func (disabledShuffleShardingLimits) MaxQueriersPerUser(_ string) int { return 0 }
func (t *Loki) initQueryFrontendTripperware() (_ services.Service, err error) {
level.Debug(util_log.Logger).Log("msg", "initializing query frontend tripperware")
tripperware, stopper, err := queryrange.NewTripperware(
t.Cfg.QueryRange,
t.Cfg.Querier.Engine,
util_log.Logger,
t.Overrides,
t.Cfg.SchemaConfig,
t.cacheGenerationLoader, t.Cfg.CompactorConfig.RetentionEnabled,
prometheus.DefaultRegisterer,
)
if err != nil {
return
}
t.stopper = stopper
t.QueryFrontEndTripperware = tripperware
return services.NewIdleService(nil, nil), nil
}
func (t *Loki) initCacheGenerationLoader() (_ services.Service, err error) {
var client generationnumber.CacheGenClient
if t.supportIndexDeleteRequest() {
compactorAddress, isGRPCAddress, err := t.compactorAddress()
if err != nil {
return nil, err
}
reg := prometheus.WrapRegistererWith(prometheus.Labels{"for": "cache_gen", "client_type": t.Cfg.Target.String()}, prometheus.DefaultRegisterer)
if isGRPCAddress {
client, err = compactorclient.NewGRPCClient(compactorAddress, t.Cfg.CompactorGRPCClient, reg)
if err != nil {
return nil, err
}
} else {
client, err = compactorclient.NewHTTPClient(compactorAddress, t.Cfg.CompactorHTTPClient)
if err != nil {
return nil, err
}
}
}
t.cacheGenerationLoader = generationnumber.NewGenNumberLoader(client, prometheus.DefaultRegisterer)
return services.NewIdleService(nil, func(failureCase error) error {
t.cacheGenerationLoader.Stop()
return nil
}), nil
}
func (t *Loki) supportIndexDeleteRequest() bool {
return config.UsingObjectStorageIndex(t.Cfg.SchemaConfig.Configs)
}
// compactorAddress returns the configured address of the compactor.
// It prefers grpc address over http. If the address is grpc then the bool would be true otherwise false
func (t *Loki) compactorAddress() (string, bool, error) {
legacyReadMode := t.Cfg.LegacyReadTarget && t.Cfg.isModuleEnabled(Read)
if t.Cfg.isModuleEnabled(All) || legacyReadMode || t.Cfg.isModuleEnabled(Backend) {
// In single binary or read modes, this module depends on Server
return fmt.Sprintf("%s:%d", t.Cfg.Server.GRPCListenAddress, t.Cfg.Server.GRPCListenPort), true, nil
}
if t.Cfg.Common.CompactorAddress == "" && t.Cfg.Common.CompactorGRPCAddress == "" {
return "", false, errors.New("query filtering for deletes requires 'compactor_grpc_address' or 'compactor_address' to be configured")
}
if t.Cfg.Common.CompactorGRPCAddress != "" {
return t.Cfg.Common.CompactorGRPCAddress, true, nil
}
return t.Cfg.Common.CompactorAddress, false, nil
}
func (t *Loki) initQueryFrontend() (_ services.Service, err error) {
level.Debug(util_log.Logger).Log("msg", "initializing query frontend", "config", fmt.Sprintf("%+v", t.Cfg.Frontend))
combinedCfg := frontend.CombinedFrontendConfig{
Handler: t.Cfg.Frontend.Handler,
FrontendV1: t.Cfg.Frontend.FrontendV1,
FrontendV2: t.Cfg.Frontend.FrontendV2,
DownstreamURL: t.Cfg.Frontend.DownstreamURL,
}
roundTripper, frontendV1, frontendV2, err := frontend.InitFrontend(
combinedCfg,
scheduler.SafeReadRing(t.querySchedulerRingManager),
disabledShuffleShardingLimits{},
t.Cfg.Server.GRPCListenPort,
util_log.Logger,
prometheus.DefaultRegisterer)
if err != nil {
return nil, err
}
if frontendV1 != nil {
frontendv1pb.RegisterFrontendServer(t.Server.GRPC, frontendV1)
t.frontend = frontendV1
level.Debug(util_log.Logger).Log("msg", "using query frontend", "version", "v1")
} else if frontendV2 != nil {
frontendv2pb.RegisterFrontendForQuerierServer(t.Server.GRPC, frontendV2)
t.frontend = frontendV2
level.Debug(util_log.Logger).Log("msg", "using query frontend", "version", "v2")
} else {
level.Debug(util_log.Logger).Log("msg", "no query frontend configured")
}
roundTripper = t.QueryFrontEndTripperware(roundTripper)
frontendHandler := transport.NewHandler(t.Cfg.Frontend.Handler, roundTripper, util_log.Logger, prometheus.DefaultRegisterer)
if t.Cfg.Frontend.CompressResponses {
frontendHandler = gziphandler.GzipHandler(frontendHandler)
}
toMerge := []middleware.Interface{
httpreq.ExtractQueryTagsMiddleware(),
httpreq.PropagateHeadersMiddleware(httpreq.LokiActorPathHeader),
serverutil.RecoveryHTTPMiddleware,
t.HTTPAuthMiddleware,
queryrange.StatsHTTPMiddleware,
serverutil.NewPrepopulateMiddleware(),
serverutil.ResponseJSONMiddleware(),
}
if t.Cfg.Querier.PerRequestLimitsEnabled {
logger := log.With(util_log.Logger, "component", "query-limiter-middleware")
toMerge = append(toMerge, querylimits.NewQueryLimitsMiddleware(logger))
}
frontendHandler = middleware.Merge(toMerge...).Wrap(frontendHandler)
var defaultHandler http.Handler
// If this process also acts as a Querier we don't do any proxying of tail requests
if t.Cfg.Frontend.TailProxyURL != "" && !t.isModuleActive(Querier) {
httpMiddleware := middleware.Merge(
httpreq.ExtractQueryTagsMiddleware(),
t.HTTPAuthMiddleware,
queryrange.StatsHTTPMiddleware,
)
tailURL, err := url.Parse(t.Cfg.Frontend.TailProxyURL)
if err != nil {
return nil, err
}
tp := httputil.NewSingleHostReverseProxy(tailURL)
cfg, err := t.Cfg.Frontend.TLS.GetTLSConfig()
if err != nil {
return nil, err
}
tp.Transport = &http.Transport{
TLSClientConfig: cfg,
}
director := tp.Director
tp.Director = func(req *http.Request) {
director(req)
req.Host = tailURL.Host
}
defaultHandler = httpMiddleware.Wrap(tp)
} else {
defaultHandler = frontendHandler
}
t.Server.HTTP.Path("/loki/api/v1/query_range").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/loki/api/v1/query").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/loki/api/v1/label").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/loki/api/v1/labels").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/loki/api/v1/label/{name}/values").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/loki/api/v1/series").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/loki/api/v1/index/stats").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/loki/api/v1/index/volume").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/loki/api/v1/index/volume_range").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/api/prom/query").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/api/prom/label").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/api/prom/label/{name}/values").Methods("GET", "POST").Handler(frontendHandler)
t.Server.HTTP.Path("/api/prom/series").Methods("GET", "POST").Handler(frontendHandler)
// Only register tailing requests if this process does not act as a Querier
// If this process is also a Querier the Querier will register the tail endpoints.
if !t.isModuleActive(Querier) {
// defer tail endpoints to the default handler
t.Server.HTTP.Path("/loki/api/v1/tail").Methods("GET", "POST").Handler(defaultHandler)
t.Server.HTTP.Path("/api/prom/tail").Methods("GET", "POST").Handler(defaultHandler)
}
if t.frontend == nil {
return services.NewIdleService(nil, func(_ error) error {
if t.stopper != nil {
t.stopper.Stop()
t.stopper = nil
}
return nil
}), nil
}
return services.NewIdleService(func(ctx context.Context) error {
return services.StartAndAwaitRunning(ctx, t.frontend)
}, func(_ error) error {
// Log but not return in case of error, so that other following dependencies
// are stopped too.
if err := services.StopAndAwaitTerminated(context.Background(), t.frontend); err != nil {
level.Warn(util_log.Logger).Log("msg", "failed to stop frontend service", "err", err)
}
if t.stopper != nil {
t.stopper.Stop()
}
return nil
}), nil
}
func (t *Loki) initRulerStorage() (_ services.Service, err error) {
// if the ruler is not configured and we're in single binary then let's just log an error and continue.
// unfortunately there is no way to generate a "default" config and compare default against actual
// to determine if it's unconfigured. the following check, however, correctly tests this.
// Single binary integration tests will break if this ever drifts
legacyReadMode := t.Cfg.LegacyReadTarget && t.Cfg.isModuleEnabled(Read)
if (t.Cfg.isModuleEnabled(All) || legacyReadMode || t.Cfg.isModuleEnabled(Backend)) && t.Cfg.Ruler.StoreConfig.IsDefaults() {
level.Info(util_log.Logger).Log("msg", "Ruler storage is not configured; ruler will not be started.")
return
}
// Make sure storage directory exists if using filesystem store
if t.Cfg.Ruler.StoreConfig.Type == "local" && t.Cfg.Ruler.StoreConfig.Local.Directory != "" {
err := chunk_util.EnsureDirectory(t.Cfg.Ruler.StoreConfig.Local.Directory)
if err != nil {
return nil, err
}
}
t.RulerStorage, err = base_ruler.NewLegacyRuleStore(t.Cfg.Ruler.StoreConfig, t.Cfg.StorageConfig.Hedging, t.clientMetrics, ruler.GroupLoader{}, util_log.Logger)
return
}
func (t *Loki) initRuler() (_ services.Service, err error) {
if t.RulerStorage == nil {
level.Warn(util_log.Logger).Log("msg", "RulerStorage is nil. Not starting the ruler.")
return nil, nil
}
if t.ruleEvaluator == nil {
level.Warn(util_log.Logger).Log("msg", "RuleEvaluator is nil. Not starting the ruler.") // TODO better error msg
return nil, nil
}
t.Cfg.Ruler.Ring.ListenPort = t.Cfg.Server.GRPCListenPort
t.ruler, err = ruler.NewRuler(
t.Cfg.Ruler,
t.ruleEvaluator,
prometheus.DefaultRegisterer,
util_log.Logger,
t.RulerStorage,
t.Overrides,
)
if err != nil {
return
}
t.rulerAPI = base_ruler.NewAPI(t.ruler, t.RulerStorage, util_log.Logger)
// Expose HTTP endpoints.
if t.Cfg.Ruler.EnableAPI {
t.Server.HTTP.Path("/ruler/ring").Methods("GET", "POST").Handler(t.ruler)