querier

package
v0.0.0-...-fbfa8e9 Latest Latest
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 Go to latest Published: Dec 18, 2024 License: AGPL-3.0 Imports: 86 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// Queries are a set of matchers with time ranges - should not get into megabytes
	MaxRemoteReadQuerySize = 1024 * 1024
)

Variables

This section is empty.

Functions

func ActiveNativeHistogramMetricsHandler 

func ActiveNativeHistogramMetricsHandler(d Distributor, limits *validation.Overrides) http.Handler

func ActiveSeriesCardinalityHandler 

func ActiveSeriesCardinalityHandler(d Distributor, limits *validation.Overrides) http.Handler

func LabelNamesCardinalityHandler 

func LabelNamesCardinalityHandler(d Distributor, limits *validation.Overrides) http.Handler

LabelNamesCardinalityHandler creates handler for label names cardinality endpoint.

func LabelValuesCardinalityHandler 

func LabelValuesCardinalityHandler(distributor Distributor, limits *validation.Overrides) http.Handler

LabelValuesCardinalityHandler creates handler for label values cardinality endpoint.

func New 

func New(cfg Config, limits *validation.Overrides, distributor Distributor, queryables []TimeRangeQueryable, reg prometheus.Registerer, logger log.Logger, tracker *activitytracker.ActivityTracker) (storage.SampleAndChunkQueryable, storage.ExemplarQueryable, promql.QueryEngine, error)

New builds a queryable and promql engine.

func NewDistributorQueryable 

func NewDistributorQueryable(distributor Distributor, cfgProvider distributorQueryableConfigProvider, queryMetrics *stats.QueryMetrics, logger log.Logger) storage.Queryable

func NewErrorTranslateQueryableWithFn 

func NewErrorTranslateQueryableWithFn(q storage.Queryable, fn ErrTranslateFn) storage.Queryable

func NewErrorTranslateSampleAndChunkQueryable 

func NewErrorTranslateSampleAndChunkQueryable(q storage.SampleAndChunkQueryable) storage.SampleAndChunkQueryable

func NewErrorTranslateSampleAndChunkQueryableWithFn 

func NewErrorTranslateSampleAndChunkQueryableWithFn(q storage.SampleAndChunkQueryable, fn ErrTranslateFn) storage.SampleAndChunkQueryable

func NewMaxQueryLengthError 

func NewMaxQueryLengthError(actualQueryLen, maxQueryLength time.Duration) validation.LimitError

func NewMetadataHandler 

func NewMetadataHandler(m MetadataSupplier) http.Handler

NewMetadataHandler creates a http.Handler for serving metric metadata held by Mimir for a given tenant. It is kept and returned as a set.

func NewSampleAndChunkQueryable 

func NewSampleAndChunkQueryable(q storage.Queryable) storage.SampleAndChunkQueryable

NewSampleAndChunkQueryable creates a SampleAndChunkQueryable from a Queryable.

func RemoteReadHandler 

func RemoteReadHandler(q storage.SampleAndChunkQueryable, logger log.Logger) http.Handler

RemoteReadHandler handles Prometheus remote read requests.

func ShouldQueryBlockStore 

func ShouldQueryBlockStore(queryStoreAfter time.Duration, now time.Time, queryMinT int64) bool

ShouldQueryBlockStore provides a check for whether the block store will be used for a given query.

func ShouldQueryIngesters 

func ShouldQueryIngesters(queryIngestersWithin time.Duration, now time.Time, queryMaxT int64) bool

ShouldQueryIngesters provides a check for whether the ingesters will be used for a given query.

func TranslateToPromqlAPIError 

func TranslateToPromqlAPIError(err error) error

TranslateToPromqlAPIError converts error to one of promql.Errors for consumption in PromQL API. PromQL API only recognizes few errors, and converts everything else to HTTP status code 422.

Specifically, it supports: 

promql.ErrQueryCanceled, mapped to 499
promql.ErrQueryTimeout, mapped to 503
promql.ErrStorage mapped to 500
anything else is mapped to 422

Querier code produces different kinds of errors, and we want to map them to above-mentioned HTTP status codes correctly.

Details: - vendor/github.com/prometheus/prometheus/web/api/v1/api.go, respondError function only accepts *apiError types. - translation of error to *apiError happens in vendor/github.com/prometheus/prometheus/web/api/v1/api.go, returnAPIError method.

Types

type BlocksConsistency 

type BlocksConsistency struct {
	// contains filtered or unexported fields
}

func NewBlocksConsistency 

func NewBlocksConsistency(uploadGracePeriod time.Duration, reg prometheus.Registerer) *BlocksConsistency

func (*BlocksConsistency) NewTracker 

func (c *BlocksConsistency) NewTracker(knownBlocks bucketindex.Blocks, logger log.Logger) BlocksConsistencyTracker

NewTracker creates a consistency tracker from the known blocks. It filters out any block uploaded within uploadGracePeriod and with a deletion mark within deletionGracePeriod.

type BlocksConsistencyTracker 

type BlocksConsistencyTracker struct {
	// contains filtered or unexported fields
}

func (BlocksConsistencyTracker) Check 

func (c BlocksConsistencyTracker) Check(queriedBlocks []ulid.ULID) (missingBlocks []ulid.ULID)

Check takes a slice of blocks which can be all queried blocks so far or only blocks queried since the last call to Check. Check returns the blocks which haven't been seen in any call to Check yet.

func (BlocksConsistencyTracker) Complete 

func (c BlocksConsistencyTracker) Complete()

Complete should be called once the request tracked by this BlocksConsistencyTracker has been completed. This function should NOT be called if the request is canceled or interrupted due to any error.

type BlocksFinder 

type BlocksFinder interface {
	services.Service

	// GetBlocks returns known blocks for userID containing samples within the range minT
	// and maxT (milliseconds, both included). Returned blocks are sorted by MaxTime descending.
	GetBlocks(ctx context.Context, userID string, minT, maxT int64) (bucketindex.Blocks, error)
}

BlocksFinder is the interface used to find blocks for a given user and time range.

type BlocksStoreClient 

type BlocksStoreClient interface {
	storegatewaypb.StoreGatewayClient

	// RemoteAddress returns the address of the remote store-gateway and is used to uniquely
	// identify a store-gateway backend instance.
	RemoteAddress() string
}

BlocksStoreClient is the interface that should be implemented by any client used to query a backend store-gateway.

type BlocksStoreLimits 

type BlocksStoreLimits interface {
	bucket.TenantConfigProvider

	MaxLabelsQueryLength(userID string) time.Duration
	MaxChunksPerQuery(userID string) int
	StoreGatewayTenantShardSize(userID string) int
}

BlocksStoreLimits is the interface that should be implemented by the limits provider.

type BlocksStoreQueryable 

type BlocksStoreQueryable struct {
	services.Service
	// contains filtered or unexported fields
}

BlocksStoreQueryable is a queryable which queries blocks storage via the store-gateway.

func NewBlocksStoreQueryable 

func NewBlocksStoreQueryable(
	stores BlocksStoreSet,
	finder BlocksFinder,
	consistency *BlocksConsistency,
	limits BlocksStoreLimits,
	queryStoreAfter time.Duration,
	streamingChunksBatchSize uint64,
	logger log.Logger,
	reg prometheus.Registerer,
) (*BlocksStoreQueryable, error)

func NewBlocksStoreQueryableFromConfig 

func NewBlocksStoreQueryableFromConfig(querierCfg Config, gatewayCfg storegateway.Config, storageCfg mimir_tsdb.BlocksStorageConfig, limits BlocksStoreLimits, logger log.Logger, reg prometheus.Registerer) (*BlocksStoreQueryable, error)

func (*BlocksStoreQueryable) Querier 

func (q *BlocksStoreQueryable) Querier(mint, maxt int64) (storage.Querier, error)

Querier returns a new Querier on the storage.

type BlocksStoreSet 

type BlocksStoreSet interface {
	services.Service

	// GetClientsFor returns the store gateway clients that should be used to
	// query the set of blocks in input. The exclude parameter is the map of
	// blocks -> store-gateway addresses that should be excluded.
	GetClientsFor(userID string, blockIDs []ulid.ULID, exclude map[ulid.ULID][]string) (map[BlocksStoreClient][]ulid.ULID, error)
}

BlocksStoreSet is the interface used to get the clients to query series on a set of blocks.

type BucketIndexBlocksFinder 

type BucketIndexBlocksFinder struct {
	services.Service
	// contains filtered or unexported fields
}

BucketIndexBlocksFinder implements BlocksFinder interface and find blocks in the bucket looking up the bucket index.

func NewBucketIndexBlocksFinder 

func NewBucketIndexBlocksFinder(cfg BucketIndexBlocksFinderConfig, bkt objstore.Bucket, cfgProvider bucket.TenantConfigProvider, logger log.Logger, reg prometheus.Registerer) *BucketIndexBlocksFinder

func (*BucketIndexBlocksFinder) GetBlocks 

func (f *BucketIndexBlocksFinder) GetBlocks(ctx context.Context, userID string, minT, maxT int64) (bucketindex.Blocks, error)

GetBlocks implements BlocksFinder.

type BucketIndexBlocksFinderConfig 

type BucketIndexBlocksFinderConfig struct {
	IndexLoader              bucketindex.LoaderConfig
	MaxStalePeriod           time.Duration
	IgnoreDeletionMarksDelay time.Duration
}

type ClientConfig 

type ClientConfig struct {
	TLSEnabled bool             `yaml:"tls_enabled" category:"advanced"`
	TLS        tls.ClientConfig `yaml:",inline"`
}

func (*ClientConfig) RegisterFlagsWithPrefix 

func (cfg *ClientConfig) RegisterFlagsWithPrefix(prefix string, f *flag.FlagSet)

type Config 

type Config struct {
	// QueryStoreAfter the time after which queries should also be sent to the store and not just ingesters.
	QueryStoreAfter time.Duration `yaml:"query_store_after" category:"advanced"`

	StoreGatewayClient ClientConfig `yaml:"store_gateway_client"`

	ShuffleShardingIngestersEnabled bool `yaml:"shuffle_sharding_ingesters_enabled" category:"advanced"`

	PreferAvailabilityZone                         string        `yaml:"prefer_availability_zone" category:"experimental" doc:"hidden"`
	StreamingChunksPerIngesterSeriesBufferSize     uint64        `yaml:"streaming_chunks_per_ingester_series_buffer_size" category:"advanced"`
	StreamingChunksPerStoreGatewaySeriesBufferSize uint64        `yaml:"streaming_chunks_per_store_gateway_series_buffer_size" category:"advanced"`
	MinimizeIngesterRequests                       bool          `yaml:"minimize_ingester_requests" category:"advanced"`
	MinimiseIngesterRequestsHedgingDelay           time.Duration `yaml:"minimize_ingester_requests_hedging_delay" category:"advanced"`

	QueryEngine               string `yaml:"query_engine" category:"experimental"`
	EnableQueryEngineFallback bool   `yaml:"enable_query_engine_fallback" category:"experimental"`

	// PromQL engine config.
	EngineConfig engine.Config `yaml:",inline"`
}

Config contains the configuration require to create a querier

func (*Config) RegisterFlags 

func (cfg *Config) RegisterFlags(f *flag.FlagSet)

RegisterFlags adds the flags required to config this to the given FlagSet.

func (*Config) Validate 

func (cfg *Config) Validate() error

func (*Config) ValidateLimits 

func (cfg *Config) ValidateLimits(limits validation.Limits) error

type Distributor 

type Distributor interface {
	QueryStream(ctx context.Context, queryMetrics *stats.QueryMetrics, from, to model.Time, matchers ...*labels.Matcher) (client.CombinedQueryStreamResponse, error)
	QueryExemplars(ctx context.Context, from, to model.Time, matchers ...[]*labels.Matcher) (*client.ExemplarQueryResponse, error)
	LabelValuesForLabelName(ctx context.Context, from, to model.Time, label model.LabelName, matchers ...*labels.Matcher) ([]string, error)
	LabelNames(ctx context.Context, from model.Time, to model.Time, matchers ...*labels.Matcher) ([]string, error)
	MetricsForLabelMatchers(ctx context.Context, from, through model.Time, matchers ...*labels.Matcher) ([]labels.Labels, error)
	MetricsMetadata(ctx context.Context, req *client.MetricsMetadataRequest) ([]scrape.MetricMetadata, error)
	LabelNamesAndValues(ctx context.Context, matchers []*labels.Matcher, countMethod cardinality.CountMethod) (*client.LabelNamesAndValuesResponse, error)
	LabelValuesCardinality(ctx context.Context, labelNames []model.LabelName, matchers []*labels.Matcher, countMethod cardinality.CountMethod) (uint64, *client.LabelValuesCardinalityResponse, error)
	ActiveSeries(ctx context.Context, matchers []*labels.Matcher) ([]labels.Labels, error)
	ActiveNativeHistogramMetrics(ctx context.Context, matchers []*labels.Matcher) (*cardinality.ActiveNativeHistogramMetricsResponse, error)
}

Distributor is the read interface to the distributor, made an interface here to reduce package coupling.

type DummyAlertmanagerRetriever 

type DummyAlertmanagerRetriever struct{}

DummyAlertmanagerRetriever implements AlertmanagerRetriever.

func (DummyAlertmanagerRetriever) Alertmanagers 

func (DummyAlertmanagerRetriever) Alertmanagers() []*url.URL

Alertmanagers implements AlertmanagerRetriever.

func (DummyAlertmanagerRetriever) DroppedAlertmanagers 

func (DummyAlertmanagerRetriever) DroppedAlertmanagers() []*url.URL

DroppedAlertmanagers implements AlertmanagerRetriever.

type DummyRulesRetriever 

type DummyRulesRetriever struct{}

DummyRulesRetriever implements RulesRetriever.

func (DummyRulesRetriever) AlertingRules 

func (DummyRulesRetriever) AlertingRules() []*rules.AlertingRule

AlertingRules implements RulesRetriever.

func (DummyRulesRetriever) RuleGroups 

func (DummyRulesRetriever) RuleGroups() []*rules.Group

RuleGroups implements RulesRetriever.

type DummyTargetRetriever 

type DummyTargetRetriever struct{}

DummyTargetRetriever implements github.com/prometheus/prometheus/web/api/v1.TargetRetriever. and v1.ScrapePoolsRetriever

func (DummyTargetRetriever) ScrapePools 

func (DummyTargetRetriever) ScrapePools() []string

func (DummyTargetRetriever) TargetsActive 

func (DummyTargetRetriever) TargetsActive() map[string][]*scrape.Target

TargetsActive implements TargetRetriever.

func (DummyTargetRetriever) TargetsDropped 

func (DummyTargetRetriever) TargetsDropped() map[string][]*scrape.Target

TargetsDropped implements TargetRetriever.

func (DummyTargetRetriever) TargetsDroppedCounts 

func (DummyTargetRetriever) TargetsDroppedCounts() map[string]int

TargetsDroppedCounts implements TargetRetriever.

type ErrTranslateFn 

type ErrTranslateFn func(err error) error

ErrTranslateFn is used to translate or wrap error before returning it by functions in storage.SampleAndChunkQueryable interface. Input error may be nil.

type MetadataSupplier 

type MetadataSupplier interface {
	MetricsMetadata(ctx context.Context, req *client.MetricsMetadataRequest) ([]scrape.MetricMetadata, error)
}

MetadataSupplier is the metadata specific part of the Distributor interface. It exists to allow us to wrap the default implementation (the distributor embedded in a querier) with logic for handling tenant federated metadata requests.

type SeriesWithChunks 

type SeriesWithChunks interface {
	storage.Series

	// Returns all chunks with series data.
	Chunks() []chunk.Chunk
}

SeriesWithChunks extends storage.Series interface with direct access to Mimir chunks.

type TimeRangeQueryable 

type TimeRangeQueryable struct {
	storage.Queryable
	IsApplicable func(tenantID string, now time.Time, queryMinT, queryMaxT int64, matchers ...*labels.Matcher) bool
	StorageName  string
}

TimeRangeQueryable is a Queryable that is aware of when it is applicable.

func NewStoreGatewayTimeRangeQueryable 

func NewStoreGatewayTimeRangeQueryable(q storage.Queryable, querierConfig Config) TimeRangeQueryable

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