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 GenerateACI22LowerLayer(dockerURL *common.ParsedDockerURL, layerDigest string, outputDir string, ...) (string, *schema.ImageManifest, error)
• func GenerateACI22TopLayer(dockerURL *common.ParsedDockerURL, imageConfig *typesV2.ImageConfig, ...) (string, *schema.ImageManifest, error)
• func GenerateEmptyManifest(name string) (*schema.ImageManifest, error)
• func GenerateManifest(layerData types.DockerImageData, dockerURL *common.ParsedDockerURL, ...) (*schema.ImageManifest, error)
• func GenerateManifestV22(name string, dockerURL *common.ParsedDockerURL, config *typesV2.ImageConfig, ...) (*schema.ImageManifest, error)
• 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 *common.ParsedDockerURL, outputDir string, layerFile *os.File, curPwl []string, compression common.Compression, debug log.Logger) (string, *schema.ImageManifest, error)

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

func GenerateACI22LowerLayer

func GenerateACI22LowerLayer(dockerURL *common.ParsedDockerURL, layerDigest string, outputDir string, layerFile *os.File, curPwl []string, compression common.Compression) (string, *schema.ImageManifest, error)

func GenerateACI22TopLayer

func GenerateACI22TopLayer(dockerURL *common.ParsedDockerURL, imageConfig *typesV2.ImageConfig, layerDigest string, outputDir string, layerFile *os.File, curPwl []string, compression common.Compression, lowerLayers []*schema.ImageManifest, debug log.Logger) (string, *schema.ImageManifest, error)

func GenerateEmptyManifest

func GenerateEmptyManifest(name string) (*schema.ImageManifest, error)

func GenerateManifest

func GenerateManifest(layerData types.DockerImageData, dockerURL *common.ParsedDockerURL, debug log.Logger) (*schema.ImageManifest, error)

GenerateManifest converts the docker manifest format to an appc ImageManifest.

func GenerateManifestV22

func GenerateManifestV22(name string, dockerURL *common.ParsedDockerURL, config *typesV2.ImageConfig, imageDigest string, lowerLayers []*schema.ImageManifest, debug log.Logger) (*schema.ImageManifest, error)

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, *common.ParsedDockerURL, error)
	BuildACI(layerIDs []string, dockerURL *common.ParsedDockerURL, outputDir string, tmpBaseDir 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.