utils

package
v1.3.1 Latest Latest
Warning

This package is not in the latest version of its module.

Go to latest
Published: Jul 30, 2015 License: Apache-2.0, BSD-2-Clause, BSD-3-Clause, + 1 more Imports: 19 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func AddJitter

func AddJitter(duration time.Duration, jitter time.Duration) time.Duration

AddJitter adds an amount of jitter between 0 and the given jitter to the given duration

func CompleteJsonUnmarshal

func CompleteJsonUnmarshal(b []byte, iface interface{}) error

CompleteJsonUnmarshal determines if a given struct has members corresponding to every key of a json object (passed as the json string). By default, Go ignores fields in an object which have no corresponding struct member and this can be used to determine if this ignoring has occured Errors will result in "false" as a return value

func DefaultIfBlank

func DefaultIfBlank(str string, default_value string) string

func JsonKeys

func JsonKeys(b []byte) ([]string, error)

JsonKeys takes an arbitrary byte array representing a json stringified object and returns all the keys of that object.

func NewMultiError

func NewMultiError(errs ...error) error

func ParseBool

func ParseBool(str string, default_ bool) bool

func RandHex

func RandHex() string

func RetryNWithBackoff

func RetryNWithBackoff(backoff Backoff, n int, fn func() error) error

RetryNWithBackoff takes a Backoff, a maximum number of tries 'n', and a function that returns an error. The function is called until either it does not return an error or the maximum tries have been reached. If the error returned is Retriable, the Retriability of it will be respected. If the number of tries is exhausted, the last error will be returned.

func RetryWithBackoff

func RetryWithBackoff(backoff Backoff, fn func() error) error

RetryWithBackoff takes a Backoff and a function to call that returns an error If the error is nil then the function will no longer be called If the error is Retriable then that will be used to determine if it should be retried

func SignHTTPRequest added in v1.3.1

func SignHTTPRequest(req *http.Request, region, service string, creds *credentials.Credentials)

SignHTTPRequest signs an http.Request struct with authv4 using the given region, service, and credentials.

func SlicesDeepEqual

func SlicesDeepEqual(slice1, slice2 interface{}) bool

SlicesDeepEqual checks if slice1 and slice2 are equal, disregarding order.

func StrSliceEqual

func StrSliceEqual(s1, s2 []string) bool

func Strptr

func Strptr(s string) *string

func Uint16SliceToStringSlice

func Uint16SliceToStringSlice(slice []uint16) []*string

Uint16SliceToStringSlice converts a slice of type uint16 to a slice of type *string. It uses strconv.Itoa on each element

func ZeroOrNil

func ZeroOrNil(obj interface{}) bool

Types

type Backoff

type Backoff interface {
	Reset()
	Duration() time.Duration
}

type ChanSemaphore

type ChanSemaphore struct {
	Count int // Public for introspection; should not be written to
	// contains filtered or unexported fields
}

Implements semaphore

func (*ChanSemaphore) Post

func (s *ChanSemaphore) Post()

func (*ChanSemaphore) Wait

func (s *ChanSemaphore) Wait()

type DefaultRetriable

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

func (DefaultRetriable) Retry

func (dr DefaultRetriable) Retry() bool

type DefaultRetriableError

type DefaultRetriableError struct {
	Retriable
	// contains filtered or unexported fields
}

type MultiErr

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

Implements error

func (MultiErr) Error

func (me MultiErr) Error() string

type Retriable

type Retriable interface {
	Retry() bool
}

func NewRetriable

func NewRetriable(retry bool) Retriable

type RetriableError

type RetriableError interface {
	Retriable
	error
}

func NewRetriableError

func NewRetriableError(retriable Retriable, err error) RetriableError

type Semaphore

type Semaphore interface {
	Post()
	Wait()
}

func NewSemaphore

func NewSemaphore(count int) Semaphore

type SimpleBackoff

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

func NewSimpleBackoff

func NewSimpleBackoff(min, max time.Duration, jitterMultiple, multiple float64) *SimpleBackoff

NewSimpleBackoff creates a Backoff which ranges from min to max increasing by multiple each time. It also adds (and yes, the jitter is always added, never subtracted) a random amount of jitter up to jitterMultiple percent (that is, jitterMultiple = 0.0 is no jitter, 0.15 is 15% added jitter). The total time may exceed "max" when accounting for jitter, such that the absolute max is max + max * jiterMultiple

func (*SimpleBackoff) Duration

func (sb *SimpleBackoff) Duration() time.Duration

func (*SimpleBackoff) Reset

func (sb *SimpleBackoff) Reset()

Directories

Path Synopsis
Package atomic implements higher level constructs on top of the stdlib atomic package
Package atomic implements higher level constructs on top of the stdlib atomic package
Package sync is an analogue to the stdlib sync package.
Package sync is an analogue to the stdlib sync package.
Package ttime implements a testable alternative to the Go "time" package.
Package ttime implements a testable alternative to the Go "time" package.

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL