package util

import "istio.io/istio/tests/util"

Index ¶

• func Backoff(baseDelay, maxDelay time.Duration, retries int) time.Duration
• func Compare(out, model []byte) error
• func RandomString(n int) string
• type Break
• func (e Break) Error() string
• type Retrier
• func (r Retrier) Retry(ctx context.Context, fn func(ctx context.Context, retryIndex int) error) (int, error)

Package Files ¶

common_utils.go compare_utils.go retry.go

func Backoff ¶ Uses

func Backoff(baseDelay, maxDelay time.Duration, retries int) time.Duration

Backoff returns a random value in [0, maxDelay] that increases exponentially with retries, starting from baseDelay. It is the Go equivalent to C++'s //util/time/backoff.cc.

func Compare ¶ Uses

func Compare(out, model []byte) error

Compare compares two byte slices. It returns an error with a contextual diff if they are not equal.

func RandomString ¶ Uses

func RandomString(n int) string

RandomString returns a random string of size n (letters only)

type Break ¶ Uses

type Break struct {
    Err error
}

Break the retry loop if the error returned is of this type.

func (Break) Error ¶ Uses

func (e Break) Error() string

type Retrier ¶ Uses

type Retrier struct {
    // BaseDelay is the minimum delay between retry attempts.
    BaseDelay time.Duration
    // MaxDelay is the maximum delay allowed between retry attempts.
    MaxDelay time.Duration
    // MaxDuration is the maximum cumulative duration allowed for all retries
    MaxDuration time.Duration
    // Retries defines number of retry attempts
    Retries int
}

Retrier contains the retry configuration parameters.

func (Retrier) Retry ¶ Uses

func (r Retrier) Retry(ctx context.Context, fn func(ctx context.Context, retryIndex int) error) (int, error)

Retry calls the given function a number of times, unless it returns a nil or a Break

Directories ¶