graph

package
v1.4.2-0...-77bbee3 Latest Latest
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 Go to latest Published: Jul 20, 2015 License: Apache-2.0 Imports: 51 Imported by: 0

Documentation

Index

Constants

View Source 
const DEFAULTTAG = "latest"
View Source 
const MaxImageDepth = 127

Set the max depth to the aufs default that most kernels are compiled with For more information see: http://sourceforge.net/p/aufs/aufs3-standalone/ci/aufs3.12/tree/config.mk

Variables

View Source 
var (
	// ErrDigestNotSet is used when request the digest for a layer
	// but the layer has no digest value or content to compute the
	// the digest.
	ErrDigestNotSet = errors.New("digest is not set for layer")
)

Functions

func NewV2Repository 

func NewV2Repository(repoInfo *registry.RepositoryInfo, endpoint registry.APIEndpoint, metaHeaders http.Header, authConfig *cliconfig.AuthConfig) (distribution.Repository, error)

v2 only

func SetupInitLayer 

func SetupInitLayer(initLayer string) error

setupInitLayer populates a directory with mountpoints suitable for bind-mounting dockerinit into the container. The mountpoint is simply an empty file at /.dockerinit

This extra layer is used by all containers as the top-most ro layer. It protects the container from unwanted side-effects on the rw layer.

func WriteStatus 

func WriteStatus(requestedTag string, out io.Writer, sf *streamformatter.StreamFormatter, layersDownloaded bool)

Types

type ByCreated 

type ByCreated []*types.Image

func (ByCreated) Len 

func (r ByCreated) Len() int

func (ByCreated) Less 

func (r ByCreated) Less(i, j int) bool

func (ByCreated) Swap 

func (r ByCreated) Swap(i, j int)

type Graph 

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

A Graph is a store for versioned filesystem images and the relationship between them.

func NewGraph 

func NewGraph(root string, driver graphdriver.Driver) (*Graph, error)

NewGraph instantiates a new graph at the given root path in the filesystem. `root` will be created if it doesn't exist.

func (*Graph) ByParent 

func (graph *Graph) ByParent() map[string][]*Image

ByParent returns a lookup table of images by their parent. If an image of id ID has 3 children images, then the value for key ID will be a list of 3 images. If an image has no children, it will not have an entry in the table.

func (*Graph) CheckDepth 

func (graph *Graph) CheckDepth(img *Image) error

CheckDepth returns an error if the depth of an image, as returned by ImageDepth, is too large to support creating a container from it on this daemon.

func (*Graph) Create 

func (graph *Graph) Create(layerData archive.ArchiveReader, containerID, containerImage, comment, author string, containerConfig, config *runconfig.Config) (*Image, error)

Create creates a new image and registers it in the graph.

func (*Graph) Delete 

func (graph *Graph) Delete(name string) error

Delete atomically removes an image from the graph.

func (*Graph) Exists 

func (graph *Graph) Exists(id string) bool

Exists returns true if an image is registered at the given id. If the image doesn't exist or if an error is encountered, false is returned.

func (*Graph) Get 

func (graph *Graph) Get(name string) (*Image, error)

Get returns the image with the given id, or an error if the image doesn't exist.

func (*Graph) GetDigest 

func (graph *Graph) GetDigest(id string) (digest.Digest, error)

GetDigest gets the digest for the provide image layer id.

func (*Graph) GetParent 

func (graph *Graph) GetParent(img *Image) (*Image, error)

func (*Graph) GetParentsSize 

func (graph *Graph) GetParentsSize(img *Image, size int64) int64

func (*Graph) Heads 

func (graph *Graph) Heads() map[string]*Image

Heads returns all heads in the graph, keyed by id. A head is an image which is not the parent of another image in the graph.

func (*Graph) IsHeld 

func (graph *Graph) IsHeld(layerID string) bool

IsHeld returns whether the given layerID is being used by an ongoing pull or build.

func (*Graph) IsNotExist 

func (graph *Graph) IsNotExist(err error, id string) bool

FIXME: Implement error subclass instead of looking at the error text Note: This is the way golang implements os.IsNotExists on Plan9

func (*Graph) Map 

func (graph *Graph) Map() map[string]*Image

Map returns a list of all images in the graph, addressable by ID.

func (*Graph) RawJSON 

func (graph *Graph) RawJSON(id string) ([]byte, error)

RawJSON returns the JSON representation for an image as a byte array.

func (*Graph) Register 

func (graph *Graph) Register(img *Image, layerData archive.ArchiveReader) (err error)

Register imports a pre-existing image into the graph.

func (*Graph) Release 

func (graph *Graph) Release(sessionID string, layerIDs ...string)

Release removes the referenced image id from the provided set of layers.

func (*Graph) Retain 

func (graph *Graph) Retain(sessionID string, layerIDs ...string)

If the images and layers are in pulling chain, retain them. If not, they may be deleted by rmi with dangling condition.

func (*Graph) SetDigest 

func (graph *Graph) SetDigest(id string, dgst digest.Digest) error

SetDigest sets the digest for the image layer to the provided value.

func (*Graph) TarLayer 

func (graph *Graph) TarLayer(img *Image) (arch archive.Archive, err error)

TarLayer returns a tar archive of the image's filesystem layer.

func (*Graph) TempLayerArchive 

func (graph *Graph) TempLayerArchive(id string, sf *streamformatter.StreamFormatter, output io.Writer) (*archive.TempArchive, error)

TempLayerArchive creates a temporary archive of the given image's filesystem layer. 

The archive is stored on disk and will be automatically deleted as soon as has been read.
If output is not nil, a human-readable progress bar will be written to it.

func (*Graph) WalkHistory 

func (graph *Graph) WalkHistory(img *Image, handler func(Image) error) (err error)

WalkHistory calls the handler function for each image in the provided images lineage starting from immediate parent.

type Image 

type Image struct {
	ID              string            `json:"id"`
	Parent          string            `json:"parent,omitempty"`
	Comment         string            `json:"comment,omitempty"`
	Created         time.Time         `json:"created"`
	Container       string            `json:"container,omitempty"`
	ContainerConfig runconfig.Config  `json:"container_config,omitempty"`
	DockerVersion   string            `json:"docker_version,omitempty"`
	Author          string            `json:"author,omitempty"`
	Config          *runconfig.Config `json:"config,omitempty"`
	Architecture    string            `json:"architecture,omitempty"`
	OS              string            `json:"os,omitempty"`
	Size            int64
	// contains filtered or unexported fields
}

func NewImgJSON 

func NewImgJSON(src []byte) (*Image, error)

Build an Image object from raw json data

type ImageExportConfig 

type ImageExportConfig struct {
	Names     []string
	Outstream io.Writer
}

CmdImageExport exports all images with the given tag. All versions containing the same tag are exported. The resulting output is an uncompressed tar ball. name is the set of tags to export. out is the writer where the images are written to.

type ImageImportConfig 

type ImageImportConfig struct {
	Changes         []string
	InConfig        io.ReadCloser
	OutStream       io.Writer
	ContainerConfig *runconfig.Config
}

type ImagePullConfig 

type ImagePullConfig struct {
	MetaHeaders map[string][]string
	AuthConfig  *cliconfig.AuthConfig
	OutStream   io.Writer
}

type ImagePushConfig 

type ImagePushConfig struct {
	MetaHeaders map[string][]string
	AuthConfig  *cliconfig.AuthConfig
	Tag         string
	OutStream   io.Writer
}

type ImagesConfig 

type ImagesConfig struct {
	Filters string
	Filter  string
	All     bool
}

type Puller 

type Puller interface {
	// Pull tries to pull the image referenced by `tag`
	// Pull returns an error if any, as well as a boolean that determines whether to retry Pull on the next configured endpoint.
	//
	// TODO(tiborvass): have Pull() take a reference to repository + tag, so that the puller itself is repository-agnostic.
	Pull(tag string) (fallback bool, err error)
}

func NewPuller 

func NewPuller(s *TagStore, endpoint registry.APIEndpoint, repoInfo *registry.RepositoryInfo, imagePullConfig *ImagePullConfig, sf *streamformatter.StreamFormatter) (Puller, error)

type Pusher 

type Pusher interface {
	// Push tries to push the image configured at the creation of Pusher.
	// Push returns an error if any, as well as a boolean that determines whether to retry Push on the next configured endpoint.
	//
	// TODO(tiborvass): have Push() take a reference to repository + tag, so that the pusher itself is repository-agnostic.
	Push() (fallback bool, err error)
}

type Repository 

type Repository map[string]string

func (Repository) Contains 

func (r Repository) Contains(u Repository) bool

return true if the contents of u Repository, are wholly contained in r Repository

func (Repository) Update 

func (r Repository) Update(u Repository)

update Repository mapping with content of u

type TagStore 

type TagStore struct {
	Repositories map[string]Repository

	sync.Mutex
	// contains filtered or unexported fields
}

func NewTagStore 

func NewTagStore(path string, cfg *TagStoreConfig) (*TagStore, error)

func (*TagStore) ByID 

func (store *TagStore) ByID() map[string][]string

Return a reverse-lookup table of all the names which refer to each image Eg. {"43b5f19b10584": {"base:latest", "base:v1"}}

func (*TagStore) Delete 

func (store *TagStore) Delete(repoName, ref string) (bool, error)

func (*TagStore) DeleteAll 

func (store *TagStore) DeleteAll(id string) error

func (*TagStore) Get 

func (store *TagStore) Get(repoName string) (Repository, error)

func (*TagStore) GetImage 

func (store *TagStore) GetImage(repoName, refOrID string) (*Image, error)

func (*TagStore) GetRepoRefs 

func (store *TagStore) GetRepoRefs() map[string][]string

func (*TagStore) History 

func (s *TagStore) History(name string) ([]*types.ImageHistory, error)

func (*TagStore) ImageExport 

func (s *TagStore) ImageExport(imageExportConfig *ImageExportConfig) error

func (*TagStore) ImageName 

func (store *TagStore) ImageName(id string) string

func (*TagStore) ImageTarLayer 

func (s *TagStore) ImageTarLayer(name string, dest io.Writer) error

ImageTarLayer return the tarLayer of the image

func (*TagStore) Images 

func (s *TagStore) Images(config *ImagesConfig) ([]*types.Image, error)

func (*TagStore) Import 

func (s *TagStore) Import(src string, repo string, tag string, imageImportConfig *ImageImportConfig) error

func (*TagStore) Load 

func (s *TagStore) Load(inTar io.ReadCloser, outStream io.Writer) error

Loads a set of images into the repository. This is the complementary of ImageExport. The input stream is an uncompressed tar ball containing images and metadata.

func (*TagStore) Lookup 

func (s *TagStore) Lookup(name string) (*types.ImageInspect, error)

Lookup return an image encoded in JSON

func (*TagStore) LookupImage 

func (store *TagStore) LookupImage(name string) (*Image, error)

func (*TagStore) LookupRaw 

func (s *TagStore) LookupRaw(name string) ([]byte, error)

func (*TagStore) NewPusher 

func (s *TagStore) NewPusher(endpoint registry.APIEndpoint, localRepo Repository, repoInfo *registry.RepositoryInfo, imagePushConfig *ImagePushConfig, sf *streamformatter.StreamFormatter) (Pusher, error)

func (*TagStore) Pull 

func (s *TagStore) Pull(image string, tag string, imagePullConfig *ImagePullConfig) error

func (*TagStore) Push 

func (s *TagStore) Push(localName string, imagePushConfig *ImagePushConfig) error

FIXME: Allow to interrupt current push when new push of same image is done.

func (*TagStore) SetDigest 

func (store *TagStore) SetDigest(repoName, digest, imageName string) error

SetDigest creates a digest reference to an image ID.

func (*TagStore) SetLoad 

func (store *TagStore) SetLoad(repoName, tag, imageName string, force bool, out io.Writer) error

func (*TagStore) Tag 

func (store *TagStore) Tag(repoName, tag, imageName string, force bool) error

type TagStoreConfig 

type TagStoreConfig struct {
	Graph    *Graph
	Key      libtrust.PrivateKey
	Registry *registry.Service
	Events   *events.Events
	Trust    *trust.TrustStore
}

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