internal

Documentation

Overview

Package internal provides functions shared by different parts of docker2aci.

Note: this package is an implementation detail and shouldn't be used outside of docker2aci.

Index

• func GenerateACI(layerNumber int, layerData types.DockerImageData, ...) (string, *schema.ImageManifest, error)
• func GenerateManifest(layerData types.DockerImageData, dockerURL *types.ParsedDockerURL) (*schema.ImageManifest, error)
• func GetAuthInfo(indexServer string) (string, string, error)
• func ParseDockerURL(arg string) (*types.ParsedDockerURL, error)
• func SplitReposName(reposName string) (string, string)
• func ValidateACI(aciPath string) error
• func WriteManifest(outputWriter *tar.Writer, manifest schema.ImageManifest) error
• func WriteRootfsDir(tarWriter *tar.Writer) error
• type Docker2ACIBackend

Functions

func GenerateACI

func GenerateACI(layerNumber int, layerData types.DockerImageData, dockerURL *types.ParsedDockerURL, outputDir string, layerFile *os.File, curPwl []string, compression common.Compression) (string, *schema.ImageManifest, error)

GenerateACI takes a Docker layer and generates an ACI from it.

func GenerateManifest

func GenerateManifest(layerData types.DockerImageData, dockerURL *types.ParsedDockerURL) (*schema.ImageManifest, error)

GenerateManifest converts the docker manifest format to an appc ImageManifest.

func GetAuthInfo

func GetAuthInfo(indexServer string) (string, string, error)

GetDockercfgAuth reads a ~/.dockercfg file and returns the username and password of the given docker index server.

func ParseDockerURL

func ParseDockerURL(arg string) (*types.ParsedDockerURL, error)

ParseDockerURL takes a Docker URL and returns a ParsedDockerURL with its index URL, image name, and tag.

func SplitReposName

func SplitReposName(reposName string) (string, string)

SplitReposName breaks a reposName into an index name and remote name.

func ValidateACI

func ValidateACI(aciPath string) error

ValidateACI checks whether the ACI in aciPath is valid.

func WriteManifest

func WriteManifest(outputWriter *tar.Writer, manifest schema.ImageManifest) error

WriteManifest writes a schema.ImageManifest entry on a tar.Writer.

func WriteRootfsDir

func WriteRootfsDir(tarWriter *tar.Writer) error

WriteRootfsDir writes a "rootfs" dir entry on a tar.Writer.

Types

type Docker2ACIBackend

type Docker2ACIBackend interface {
	GetImageInfo(dockerUrl string) ([]string, *types.ParsedDockerURL, error)
	BuildACI(layerNumber int, layerID string, dockerURL *types.ParsedDockerURL, outputDir string, tmpBaseDir string, curPWl []string, compression common.Compression) (string, *schema.ImageManifest, error)
}

Docker2ACIBackend is the interface that abstracts converting Docker layers to ACI from where they're stored (remote or file).

GetImageInfo takes a Docker URL and returns a list of layers and the parsed Docker URL.

BuildACI takes a Docker layer, converts it to ACI and returns its output path and its converted ImageManifest.