util

package

v0.0.0-...-cae4bf4 Latest Latest Go to latest Published: Oct 24, 2020 License: Apache-2.0 Imports: 9 Imported by: 0

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Repository

github.com/yinchuang/cortex

Documentation ¶

Index ¶

Variables
func DoParallelQueries(ctx context.Context, doSingleQuery DoSingleQuery, queries []chunk.IndexQuery, ...) error
func EnsureDirectory(dir string) error
func GetParallelChunks(ctx context.Context, chunks []chunk.Chunk, ...) ([]chunk.Chunk, error)
type Callback
- func QueryFilter(callback Callback) Callback
type DoSingleQuery

Constants ¶

This section is empty.

Variables ¶

View Source

var QueryParallelism = 100

QueryParallelism is the maximum number of subqueries run in parallel per higher-level query

Functions ¶

func DoParallelQueries ¶

func DoParallelQueries(
	ctx context.Context, doSingleQuery DoSingleQuery, queries []chunk.IndexQuery,
	callback Callback,
) error

DoParallelQueries translates between our interface for query batching, and indexes that don't yet support batching.

func EnsureDirectory ¶

func EnsureDirectory(dir string) error

EnsureDirectory makes sure directory is there, if not creates it if not

func GetParallelChunks ¶

func GetParallelChunks(ctx context.Context, chunks []chunk.Chunk, f func(context.Context, *chunk.DecodeContext, chunk.Chunk) (chunk.Chunk, error)) ([]chunk.Chunk, error)

GetParallelChunks fetches chunks in parallel (up to maxParallel).

Types ¶

type Callback ¶

type Callback func(chunk.IndexQuery, chunk.ReadBatch) bool

Callback from an IndexQuery.

func QueryFilter ¶

func QueryFilter(callback Callback) Callback

QueryFilter wraps a callback to ensure the results are filtered correctly; useful for the cache and Bigtable backend, which only ever fetches the whole row.

type DoSingleQuery ¶

type DoSingleQuery func(context.Context, chunk.IndexQuery, Callback) error

DoSingleQuery is the interface for indexes that don't support batching yet.

Source Files ¶

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