metadata

Documentation

Index

• type BlobSumService
  • func NewBlobSumService(store Store) *BlobSumService
  • func (blobserv *BlobSumService) Add(diffID layer.DiffID, blobsum digest.Digest) error
  • func (blobserv *BlobSumService) GetBlobSums(diffID layer.DiffID) ([]digest.Digest, error)
  • func (blobserv *BlobSumService) GetDiffID(blobsum digest.Digest) (layer.DiffID, error)
• type FSMetadataStore
  • func NewFSMetadataStore(basePath string) (*FSMetadataStore, 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

Types

type BlobSumService

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

BlobSumService maps layer IDs to a set of known blobsums for the layer.

func NewBlobSumService

func NewBlobSumService(store Store) *BlobSumService

NewBlobSumService creates a new blobsum mapping service.

func (*BlobSumService) Add

func (blobserv *BlobSumService) Add(diffID layer.DiffID, blobsum digest.Digest) error

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

func (*BlobSumService) GetBlobSums

func (blobserv *BlobSumService) GetBlobSums(diffID layer.DiffID) ([]digest.Digest, error)

GetBlobSums finds the blobsums associated with a layer DiffID.

func (*BlobSumService) GetDiffID

func (blobserv *BlobSumService) GetDiffID(blobsum digest.Digest) (layer.DiffID, error)

GetDiffID finds a layer DiffID from a blobsum hash.

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) 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
}

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.