querier

package
v1.8.11 Latest Latest
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 Go to latest Published: May 10, 2022 License: Apache-2.0 Imports: 82 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ChunksHandler 

func ChunksHandler(queryable storage.Queryable) http.Handler

ChunksHandler allows you to fetch a compressed tar of all the chunks for a given time range and set of matchers. Only works with the new unified chunk querier, which is enabled when you turn on ingester chunk query streaming.

func DefaultLimitsConfig added in v1.8.10 

func DefaultLimitsConfig() validation.Limits

func MetadataHandler 

func MetadataHandler(d Distributor) http.Handler

MetadataHandler returns metric metadata held by Cortex for a given tenant. It is kept and returned as a set.

func New 

func New(cfg Config, limits *validation.Overrides, distributor Distributor, stores []QueryableWithFilter, tombstonesLoader *purger.TombstonesLoader, reg prometheus.Registerer, logger log.Logger) (storage.SampleAndChunkQueryable, storage.ExemplarQueryable, *promql.Engine)

New builds a queryable and promql engine.

func NewChunkStoreQueryable 

func NewChunkStoreQueryable(cfg Config, chunkStore chunkstore.ChunkStore) storage.Queryable

NewChunkStoreQueryable returns the storage.Queryable implementation against the chunks store.

func NewErrorTranslateQueryable added in v1.8.10 

func NewErrorTranslateQueryable(q storage.Queryable) storage.Queryable

func NewErrorTranslateQueryableWithFn added in v1.8.10 

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

func NewErrorTranslateSampleAndChunkQueryable added in v1.8.10 

func NewErrorTranslateSampleAndChunkQueryable(q storage.SampleAndChunkQueryable) storage.SampleAndChunkQueryable

func NewErrorTranslateSampleAndChunkQueryableWithFn added in v1.8.10 

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

func NewQueryable 

func NewQueryable(distributor QueryableWithFilter, stores []QueryableWithFilter, chunkIterFn chunkIteratorFunc, cfg Config, limits *validation.Overrides, tombstonesLoader *purger.TombstonesLoader) storage.Queryable

NewQueryable creates a new Queryable for cortex.

func NewSampleAndChunkQueryable 

func NewSampleAndChunkQueryable(q storage.Queryable) storage.SampleAndChunkQueryable

NewSampleAndChunkQueryable creates a SampleAndChunkQueryable from a Queryable with a ChunkQueryable stub, that errors once it get's called.

func RemoteReadHandler 

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

RemoteReadHandler handles Prometheus remote read requests.

func TranslateToPromqlAPIError added in v1.8.10 

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 503
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 BlocksConsistencyChecker 

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

func NewBlocksConsistencyChecker 

func NewBlocksConsistencyChecker(uploadGracePeriod, deletionGracePeriod time.Duration, logger log.Logger, reg prometheus.Registerer) *BlocksConsistencyChecker

func (*BlocksConsistencyChecker) Check 

func (c *BlocksConsistencyChecker) Check(knownBlocks bucketindex.Blocks, knownDeletionMarks map[ulid.ULID]*bucketindex.BlockDeletionMark, queriedBlocks []ulid.ULID) (missingBlocks []ulid.ULID)

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, map[ulid.ULID]*bucketindex.BlockDeletionMark, 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

	MaxChunksPerQueryFromStore(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 *BlocksConsistencyChecker,
	limits BlocksStoreLimits,
	queryStoreAfter time.Duration,
	logger log.Logger,
	reg prometheus.Registerer,
) (*BlocksStoreQueryable, error)

func NewBlocksStoreQueryableFromConfig 

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

func (*BlocksStoreQueryable) Querier 

func (q *BlocksStoreQueryable) Querier(ctx context.Context, 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, map[ulid.ULID]*bucketindex.BlockDeletionMark, error)

GetBlocks implements BlocksFinder.

type BucketIndexBlocksFinderConfig 

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

type BucketScanBlocksFinder 

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

BucketScanBlocksFinder is a BlocksFinder implementation periodically scanning the bucket to discover blocks.

func NewBucketScanBlocksFinder 

func NewBucketScanBlocksFinder(cfg BucketScanBlocksFinderConfig, bucketClient objstore.Bucket, cfgProvider bucket.TenantConfigProvider, logger log.Logger, reg prometheus.Registerer) *BucketScanBlocksFinder

func (*BucketScanBlocksFinder) GetBlocks 

func (d *BucketScanBlocksFinder) GetBlocks(_ context.Context, userID string, minT, maxT int64) (bucketindex.Blocks, map[ulid.ULID]*bucketindex.BlockDeletionMark, error)

GetBlocks returns known blocks for userID containing samples within the range minT and maxT (milliseconds, both included). Returned blocks are sorted by MaxTime descending.

type BucketScanBlocksFinderConfig 

type BucketScanBlocksFinderConfig struct {
	ScanInterval             time.Duration
	TenantsConcurrency       int
	MetasConcurrency         int
	CacheDir                 string
	ConsistencyDelay         time.Duration
	IgnoreDeletionMarksDelay time.Duration
}

type ClientConfig 

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

func (*ClientConfig) RegisterFlagsWithPrefix 

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

type Config 

type Config struct {
	MaxConcurrent        int           `yaml:"max_concurrent"`
	Timeout              time.Duration `yaml:"timeout"`
	Iterators            bool          `yaml:"iterators"`
	BatchIterators       bool          `yaml:"batch_iterators"`
	IngesterStreaming    bool          `yaml:"ingester_streaming"`
	MaxSamples           int           `yaml:"max_samples"`
	QueryIngestersWithin time.Duration `yaml:"query_ingesters_within"`
	QueryStoreForLabels  bool          `yaml:"query_store_for_labels_enabled"`
	AtModifierEnabled    bool          `yaml:"at_modifier_enabled"`

	// QueryStoreAfter the time after which queries should also be sent to the store and not just ingesters.
	QueryStoreAfter    time.Duration `yaml:"query_store_after"`
	MaxQueryIntoFuture time.Duration `yaml:"max_query_into_future"`

	// The default evaluation interval for the promql engine.
	// Needs to be configured for subqueries to work as it is the default
	// step if not specified.
	DefaultEvaluationInterval time.Duration `yaml:"default_evaluation_interval"`

	// Directory for ActiveQueryTracker. If empty, ActiveQueryTracker will be disabled and MaxConcurrent will not be applied (!).
	// ActiveQueryTracker logs queries that were active during the last crash, but logs them on the next startup.
	// However, we need to use active query tracker, otherwise we cannot limit Max Concurrent queries in the PromQL
	// engine.
	ActiveQueryTrackerDir string `yaml:"active_query_tracker_dir"`
	// LookbackDelta determines the time since the last sample after which a time
	// series is considered stale.
	LookbackDelta time.Duration `yaml:"lookback_delta"`

	// Blocks storage only.
	StoreGatewayAddresses string       `yaml:"store_gateway_addresses"`
	StoreGatewayClient    ClientConfig `yaml:"store_gateway_client"`

	SecondStoreEngine        string       `yaml:"second_store_engine"`
	UseSecondStoreBeforeTime flagext.Time `yaml:"use_second_store_before_time"`

	ShuffleShardingIngestersLookbackPeriod time.Duration `yaml:"shuffle_sharding_ingesters_lookback_period"`
}

Config contains the configuration require to create a querier

func DefaultQuerierConfig added in v1.8.10 

func DefaultQuerierConfig() Config

func (*Config) GetStoreGatewayAddresses 

func (cfg *Config) GetStoreGatewayAddresses() []string

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

Validate the config

type Distributor 

type Distributor interface {
	Query(ctx context.Context, from, to model.Time, matchers ...*labels.Matcher) (model.Matrix, error)
	QueryStream(ctx context.Context, from, to model.Time, matchers ...*labels.Matcher) (*client.QueryStreamResponse, 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(context.Context, model.Time, model.Time) ([]string, error)
	MetricsForLabelMatchers(ctx context.Context, from, through model.Time, matchers ...*labels.Matcher) ([]metric.Metric, error)
	MetricsMetadata(ctx context.Context) ([]scrape.MetricMetadata, 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.

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.

type ErrTranslateFn added in v1.8.10 

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 MockDistributor added in v1.8.10 

type MockDistributor struct {
	mock.Mock
}

func (*MockDistributor) LabelNames added in v1.8.10 

func (m *MockDistributor) LabelNames(ctx context.Context, from, to model.Time) ([]string, error)

func (*MockDistributor) LabelValuesForLabelName added in v1.8.10 

func (m *MockDistributor) LabelValuesForLabelName(ctx context.Context, from, to model.Time, lbl model.LabelName, matchers ...*labels.Matcher) ([]string, error)

func (*MockDistributor) MetricsForLabelMatchers added in v1.8.10 

func (m *MockDistributor) MetricsForLabelMatchers(ctx context.Context, from, to model.Time, matchers ...*labels.Matcher) ([]metric.Metric, error)

func (*MockDistributor) MetricsMetadata added in v1.8.10 

func (m *MockDistributor) MetricsMetadata(ctx context.Context) ([]scrape.MetricMetadata, error)

func (*MockDistributor) Query added in v1.8.10 

func (m *MockDistributor) Query(ctx context.Context, from, to model.Time, matchers ...*labels.Matcher) (model.Matrix, error)

func (*MockDistributor) QueryExemplars added in v1.8.10 

func (m *MockDistributor) QueryExemplars(ctx context.Context, from, to model.Time, matchers ...[]*labels.Matcher) (*client.ExemplarQueryResponse, error)

func (*MockDistributor) QueryStream added in v1.8.10 

func (m *MockDistributor) QueryStream(ctx context.Context, from, to model.Time, matchers ...*labels.Matcher) (*client.QueryStreamResponse, error)

type QueryableWithFilter 

type QueryableWithFilter interface {
	storage.Queryable

	// UseQueryable returns true if this queryable should be used to satisfy the query for given time range.
	// Query min and max time are in milliseconds since epoch.
	UseQueryable(now time.Time, queryMinT, queryMaxT int64) bool
}

QueryableWithFilter extends Queryable interface with `UseQueryable` filtering function.

func UseAlwaysQueryable 

func UseAlwaysQueryable(q storage.Queryable) QueryableWithFilter

Wraps storage.Queryable into QueryableWithFilter, with no query filtering.

func UseBeforeTimestampQueryable 

func UseBeforeTimestampQueryable(queryable storage.Queryable, ts time.Time) QueryableWithFilter

Returns QueryableWithFilter, that is used only if query starts before given timestamp. If timestamp is zero (time.IsZero), queryable is always used.

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 Cortex chunks.

type TestConfig added in v1.8.10 

type TestConfig struct {
	Cfg         Config
	Distributor Distributor
	Stores      []QueryableWithFilter
}

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