util

Documentation

Overview

Package util provides UUIDs for CarbonAPI and CarbonZipper HTTP requests.

Index

• Constants
• func Bounds(bucket int) (lower, upper int)
• func Bucket(n int64, buckets int) int
• func GetUUID(ctx context.Context) string
• func MarshalCtx(ctx context.Context, request *http.Request) *http.Request
• func UUIDHandler(h http.Handler) http.Handler
• func WithUUID(ctx context.Context) context.Context

Constants

const (
	StepSize = 50
)

Functions

func Bounds

func Bounds(bucket int) (lower, upper int)

Bounds returns the lower and upper bounds of bucket number 'bucket'.

func Bucket

func Bucket(n int64, buckets int) int

Bucket finds the number of the bucket that 'n' falls into out of 'buckets' buckets.

func GetUUID

func GetUUID(ctx context.Context) string

GetUUID gets the Carbon UUID of a request.

func MarshalCtx

func MarshalCtx(ctx context.Context, request *http.Request) *http.Request

MarshalCtx ensures that outgoing HTTP requests have a Carbon UUID.

func UUIDHandler

func UUIDHandler(h http.Handler) http.Handler

UUIDHandler is middleware that adds a Carbon UUID to all HTTP requests.

func WithUUID

func WithUUID(ctx context.Context) context.Context

WithUUID ensures that a context has a Carbon UUID.