dist

Documentation

Index

• Constants
• func AddBuildpackToLayersMD(layerMD BuildpackLayers, descriptor BuildpackDescriptor, diffID string)
• func BuildpackToLayerTar(dest string, bp Buildpack) (string, error)
• func GetLabel(labeled Labeled, label string, obj interface{}) (ok bool, err error)
• func LayerDiffID(layerTarPath string) (v1.Hash, error)
• func SetLabel(labelable Labelable, label string, data interface{}) error
• type Blob
• type Buildpack
  • func BuildpackFromBlob(bpd BuildpackDescriptor, blob Blob) Buildpack
  • func BuildpackFromRootBlob(blob Blob, layerWriterFactory archive.TarWriterFactory) (Buildpack, error)
• type BuildpackDescriptor
  • func (b *BuildpackDescriptor) EnsureStackSupport(stackID string, providedMixins []string, validateRunStageMixins bool) error
  • func (b *BuildpackDescriptor) EscapedID() string
• type BuildpackInfo
  • func (b BuildpackInfo) FullName() string
  • func (b BuildpackInfo) Match(o BuildpackInfo) bool
  • func (b BuildpackInfo) String() string
• type BuildpackLayerInfo
• type BuildpackLayers
  • func (b BuildpackLayers) Get(id, version string) (BuildpackLayerInfo, bool)
• type BuildpackRef
• type BuildpackURI
• type ImageOrURI
• type ImageRef
• type Labelable
• type Labeled
• type Order
• type OrderEntry
• type Platform
• type Stack

Constants

const AssumedBuildpackAPIVersion = "0.1"

const BuildpackLayersLabel = "io.buildpacks.buildpack.layers"

const BuildpacksDir = "/cnb/buildpacks"

Functions

func AddBuildpackToLayersMD

func AddBuildpackToLayersMD(layerMD BuildpackLayers, descriptor BuildpackDescriptor, diffID string)

func BuildpackToLayerTar

func BuildpackToLayerTar(dest string, bp Buildpack) (string, error)

func GetLabel

func GetLabel(labeled Labeled, label string, obj interface{}) (ok bool, err error)

func LayerDiffID

func LayerDiffID(layerTarPath string) (v1.Hash, error)

func SetLabel

func SetLabel(labelable Labelable, label string, data interface{}) error

Types

type Blob

type Blob interface {
	// Open returns a io.ReadCloser for the contents of the Blob in tar format.
	Open() (io.ReadCloser, error)
}

type Buildpack

type Buildpack interface {
	// Open returns a reader to a tar with contents structured as per the distribution spec
	// (currently '/cnbs/buildpacks/{ID}/{version}/*', all entries with a zeroed-out
	// timestamp and root UID/GID).
	Open() (io.ReadCloser, error)
	Descriptor() BuildpackDescriptor
}

func BuildpackFromBlob

func BuildpackFromBlob(bpd BuildpackDescriptor, blob Blob) Buildpack

BuildpackFromBlob constructs a buildpack from a blob. It is assumed that the buildpack contents are structured as per the distribution spec (currently '/cnbs/buildpacks/{ID}/{version}/*').

func BuildpackFromRootBlob

func BuildpackFromRootBlob(blob Blob, layerWriterFactory archive.TarWriterFactory) (Buildpack, error)

BuildpackFromRootBlob constructs a buildpack from a blob. It is assumed that the buildpack contents reside at the root of the blob. The constructed buildpack contents will be structured as per the distribution spec (currently a tar with contents under '/cnbs/buildpacks/{ID}/{version}/*').

type BuildpackDescriptor

type BuildpackDescriptor struct {
	API    *api.Version  `toml:"api"`
	Info   BuildpackInfo `toml:"buildpack"`
	Stacks []Stack       `toml:"stacks"`
	Order  Order         `toml:"order"`
}

func (*BuildpackDescriptor) EnsureStackSupport

func (b *BuildpackDescriptor) EnsureStackSupport(stackID string, providedMixins []string, validateRunStageMixins bool) error

func (*BuildpackDescriptor) EscapedID

func (b *BuildpackDescriptor) EscapedID() string

type BuildpackInfo

type BuildpackInfo struct {
	ID       string `toml:"id,omitempty" json:"id,omitempty" yaml:"id,omitempty"`
	Version  string `toml:"version,omitempty" json:"version,omitempty" yaml:"version,omitempty"`
	Homepage string `toml:"homepage,omitempty" json:"homepage,omitempty" yaml:"homepage,omitempty"`
}

func (BuildpackInfo) FullName

func (b BuildpackInfo) FullName() string

func (BuildpackInfo) Match

func (b BuildpackInfo) Match(o BuildpackInfo) bool

Match compares two buildpacks by ID and Version

func (BuildpackInfo) String

func (b BuildpackInfo) String() string

Satisfy stringer

type BuildpackLayerInfo

type BuildpackLayerInfo struct {
	API         *api.Version `json:"api"`
	Stacks      []Stack      `json:"stacks,omitempty"`
	Order       Order        `json:"order,omitempty"`
	LayerDiffID string       `json:"layerDiffID"`
	Homepage    string       `json:"homepage,omitempty"`
}

type BuildpackLayers

type BuildpackLayers map[string]map[string]BuildpackLayerInfo

func (BuildpackLayers) Get

func (b BuildpackLayers) Get(id, version string) (BuildpackLayerInfo, bool)

type BuildpackRef

type BuildpackRef struct {
	BuildpackInfo `yaml:"buildpackinfo,inline"`
	Optional      bool `toml:"optional,omitempty" json:"optional,omitempty" yaml:"optional,omitempty"`
}

type BuildpackURI

type BuildpackURI struct {
	URI string `toml:"uri"`
}

type ImageOrURI

type ImageOrURI struct {
	BuildpackURI
	ImageRef
}

type ImageRef

type ImageRef struct {
	ImageName string `toml:"image"`
}

type Labelable

type Labelable interface {
	SetLabel(name string, value string) error
}

type Labeled

type Labeled interface {
	Label(name string) (value string, err error)
}

type Order

type Order []OrderEntry

type OrderEntry

type OrderEntry struct {
	Group []BuildpackRef `toml:"group" json:"group"`
}

type Platform

type Platform struct {
	OS string `toml:"os"`
}

type Stack

type Stack struct {
	ID     string   `json:"id"`
	Mixins []string `json:"mixins,omitempty"`
}