utils

package

v0.0.0-...-02e5558 Latest Latest Go to latest Published: Sep 14, 2017 License: Apache-2.0 Imports: 8 Imported by: 0

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Repository

github.com/initlove/ocihub

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Documentation ¶

Index ¶

Variables
func DigestManifest(data []byte) (string, error)
func FromReader(rd io.Reader) (string, error)
func GetDigest(alg string, data []byte) string
func Payload(data []byte) ([]byte, error)
func Snap(digestFull string) (string, string)
type Algorithm
type Digester

Constants ¶

This section is empty.

Variables ¶

View Source

var MaxSize int64

MaxSize defines the max supported file size

Functions ¶

func DigestManifest ¶

func DigestManifest(data []byte) (string, error)

DigestManifest gets the real digest content of a docker manifest

func FromReader ¶

func FromReader(rd io.Reader) (string, error)

FromReader gets the digest from an io.Reader

func GetDigest ¶

func GetDigest(alg string, data []byte) string

GetDigest gets the digest value from an algrithm and a data value

func Payload ¶

func Payload(data []byte) ([]byte, error)

Payload gets the playload of a docker manifest file

func Snap ¶

func Snap(digestFull string) (string, string)

Snap gets the digest value of a full digest string TODO: lots of todo, need to verify the digest

Types ¶

type Algorithm ¶

type Algorithm string

Algorithm identifies and implementation of a digester by an identifier. Note the that this defines both the hash algorithm used and the string encoding.

const (
	SHA256         Algorithm = "sha256"           // sha256 with hex encoding
	SHA384         Algorithm = "sha384"           // sha384 with hex encoding
	SHA512         Algorithm = "sha512"           // sha512 with hex encoding
	TarsumV1SHA256 Algorithm = "tarsum+v1+sha256" // supported tarsum version, verification only

	// Canonical is the primary digest algorithm used with the distribution
	// project. Other digests may be used but this one is the primary storage
	// digest.
	Canonical = SHA256
)

supported digest types

func (Algorithm) Available ¶

func (a Algorithm) Available() bool

Available returns true if the digest type is available for use. If this returns false, New and Hash will return nil.

func (Algorithm) Hash ¶

func (a Algorithm) Hash() hash.Hash

Hash gets the hash of an algorithm

func (Algorithm) New ¶

func (a Algorithm) New() Digester

New creates a new digester

type Digester ¶

type Digester interface {
	Hash() hash.Hash // provides direct access to underlying hash instance.
	Digest() string
}

Digester defines a Hash and Digest operation

Source Files ¶

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