util

Documentation

Overview

Package util contains various general utility functions used throughout the project.

Index

• func CloneBytes(b []byte) []byte
• func HashBuffer(buf []byte) string
• func PseudoRandInt(a, b int) int
• func RunTasks(tasks [][]Task) (err error)
• func Waterfall(fns ...func() error) (err error)
• func WrapError(text string, err error) error
• type Task

Functions

func CloneBytes

func CloneBytes(b []byte) []byte

CloneBytes creates a copy of b

func HashBuffer

func HashBuffer(buf []byte) string

HashBuffer computes a base64 MD5 hash from a buffer

func PseudoRandInt

func PseudoRandInt(a, b int) int

Return a random integer N such that a <= N <= b.

func RunTasks

func RunTasks(tasks [][]Task) (err error)

Run tasks in the specified order. Exit on first error. Inspired by https://github.com/OverZealous/run-sequence

func Waterfall

func Waterfall(fns ...func() error) (err error)

Waterfall executes a slice of functions until the first error returned. This error, if any, is returned to the caller.

func WrapError

func WrapError(text string, err error) error

WrapError wraps error types to create compound error chains

Types

type Task

type Task func() error