squasher

type DeserializedTar struct {
	Content map[string]*TarEntry // map of path -> entry
	Order   []string             // paths in the order they are read in the stream
}

type DockerImageConfig struct {
	Architecture    string                   `json:"architecture"`
	Config          map[string]interface{}   `json:"config"`
	Container       string                   `json:"container"`
	ContainerConfig map[string]interface{}   `json:"container_config"`
	Created         string                   `json:"created"`
	DockerVersion   string                   `json:"docker_version"`
	History         []map[string]interface{} `json:"history"`
	OS              string                   `json:"os"`
	RootFS          struct {
		Type    string   `json:"type"`
		DiffIDs []string `json:"diff_ids"`
	} `json:"rootfs"`
}

type DockerImageManifest struct {
	Config   string
	RepoTags []string
	Layers   []string
}

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

type DockerLayerJSON struct {
	ID              string                 `json:"id"`
	Parent          string                 `json:"parent,omitempty"`
	Created         string                 `json:"created"`
	Container       string                 `json:"container"`
	ContainerConfig map[string]interface{} `json:"container_config"`
	DockerVersion   string                 `json:"docker_version"`
	Config          map[string]interface{} `json:"config"`
	Architecture    string                 `json:"architecture"`
	OS              string                 `json:"os"`
}

type ImageSquasher interface {
	Squash(context.Context, io.Reader, io.Writer) (*SquashInfo, error)
}

type SquashInfo struct {
	InputBytes        uint64
	OutputBytes       uint64
	SizeDifference    int64
	SizePctDifference float64
	FilesRemovedCount uint
	FilesRemoved      []WhiteoutFile
	LayersRemoved     uint
}

type TarEntry struct {
	Header   *tar.Header // tar header
	Contents []byte      // file contents
	Index    uint64      // index within the stream
}

type WhiteoutFile struct {
	Name string // Name of target removed file
	Size uint64 // Size in bytes
}