package metadata

import "github.com/docker/docker/distribution/metadata"

Index ¶

• type FSMetadataStore
• func NewFSMetadataStore(basePath string) (*FSMetadataStore, error)
• func (store *FSMetadataStore) Delete(namespace, key string) error
• func (store *FSMetadataStore) Get(namespace string, key string) ([]byte, error)
• func (store *FSMetadataStore) Set(namespace, key string, value []byte) error
• type Store
• type V1IDService
• func NewV1IDService(store Store) *V1IDService
• func (idserv *V1IDService) Get(v1ID, registry string) (layer.DiffID, error)
• func (idserv *V1IDService) Set(v1ID, registry string, id layer.DiffID) error
• type V2Metadata
• type V2MetadataService
• func NewV2MetadataService(store Store) *V2MetadataService
• func (serv *V2MetadataService) Add(diffID layer.DiffID, metadata V2Metadata) error
• func (serv *V2MetadataService) GetDiffID(dgst digest.Digest) (layer.DiffID, error)
• func (serv *V2MetadataService) GetMetadata(diffID layer.DiffID) ([]V2Metadata, error)
• func (serv *V2MetadataService) Remove(metadata V2Metadata) error

Types ¶

type FSMetadataStore ¶

type FSMetadataStore struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

FSMetadataStore uses the filesystem to associate metadata with layer and image IDs.

func NewFSMetadataStore ¶

func NewFSMetadataStore(basePath string) (*FSMetadataStore, error)

NewFSMetadataStore creates a new filesystem-based metadata store.

func (*FSMetadataStore) Delete ¶

func (store *FSMetadataStore) Delete(namespace, key string) error

Delete removes data indexed by namespace and key. The data file named after the key, stored in the namespace's directory is deleted.

func (*FSMetadataStore) Get ¶

func (store *FSMetadataStore) Get(namespace string, key string) ([]byte, error)

Get retrieves data by namespace and key. The data is read from a file named after the key, stored in the namespace's directory.

func (*FSMetadataStore) Set ¶

func (store *FSMetadataStore) Set(namespace, key string, value []byte) error

Set writes data indexed by namespace and key. The data is written to a file named after the key, stored in the namespace's directory.

type Store ¶

type Store interface {
	// Get retrieves data by namespace and key.
	Get(namespace string, key string) ([]byte, error)
	// Set writes data indexed by namespace and key.
	Set(namespace, key string, value []byte) error
	// Delete removes data indexed by namespace and key.
	Delete(namespace, key string) error
}

Store implements a K/V store for mapping distribution-related IDs to on-disk layer IDs and image IDs. The namespace identifies the type of mapping (i.e. "v1ids" or "artifacts"). MetadataStore is goroutine-safe.

type V1IDService ¶

type V1IDService struct {
	// contains filtered or unexported fields
}

V1IDService maps v1 IDs to layers on disk.

func NewV1IDService ¶

func NewV1IDService(store Store) *V1IDService

NewV1IDService creates a new V1 ID mapping service.

func (*V1IDService) Get ¶

func (idserv *V1IDService) Get(v1ID, registry string) (layer.DiffID, error)

Get finds a layer by its V1 ID.

func (*V1IDService) Set ¶

func (idserv *V1IDService) Set(v1ID, registry string, id layer.DiffID) error

Set associates an image with a V1 ID.

type V2Metadata ¶

type V2Metadata struct {
	Digest           digest.Digest
	SourceRepository string
}

V2Metadata contains the digest and source repository information for a layer.

type V2MetadataService ¶

type V2MetadataService struct {
	// contains filtered or unexported fields
}

V2MetadataService maps layer IDs to a set of known metadata for the layer.

func NewV2MetadataService ¶

func NewV2MetadataService(store Store) *V2MetadataService

NewV2MetadataService creates a new diff ID to v2 metadata mapping service.

func (*V2MetadataService) Add ¶

func (serv *V2MetadataService) Add(diffID layer.DiffID, metadata V2Metadata) error

Add associates metadata with a layer DiffID. If too many metadata entries are present, the oldest one is dropped.

func (*V2MetadataService) GetDiffID ¶

func (serv *V2MetadataService) GetDiffID(dgst digest.Digest) (layer.DiffID, error)

GetDiffID finds a layer DiffID from a digest.

func (*V2MetadataService) GetMetadata ¶

func (serv *V2MetadataService) GetMetadata(diffID layer.DiffID) ([]V2Metadata, error)

GetMetadata finds the metadata associated with a layer DiffID.

func (*V2MetadataService) Remove ¶

func (serv *V2MetadataService) Remove(metadata V2Metadata) error

Remove unassociates a metadata entry from a layer DiffID.

Source Files ¶

metadata.go v1_id_service.go v2_metadata_service.go