125 lines
3.6 KiB
Go
125 lines
3.6 KiB
Go
package storage
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import (
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"github.com/docker/distribution"
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"github.com/docker/distribution/registry/api/v2"
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"github.com/docker/distribution/registry/storage/cache"
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storagedriver "github.com/docker/distribution/registry/storage/driver"
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"golang.org/x/net/context"
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)
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// registry is the top-level implementation of Registry for use in the storage
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// package. All instances should descend from this object.
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type registry struct {
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driver storagedriver.StorageDriver
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pm *pathMapper
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blobStore *blobStore
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layerInfoCache cache.LayerInfoCache
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}
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// NewRegistryWithDriver creates a new registry instance from the provided
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// driver. The resulting registry may be shared by multiple goroutines but is
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// cheap to allocate.
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func NewRegistryWithDriver(ctx context.Context, driver storagedriver.StorageDriver, layerInfoCache cache.LayerInfoCache) distribution.Namespace {
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bs := &blobStore{
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driver: driver,
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pm: defaultPathMapper,
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ctx: ctx,
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}
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return ®istry{
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driver: driver,
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blobStore: bs,
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// TODO(sday): This should be configurable.
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pm: defaultPathMapper,
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layerInfoCache: layerInfoCache,
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}
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}
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// Scope returns the namespace scope for a registry. The registry
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// will only serve repositories contained within this scope.
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func (reg *registry) Scope() distribution.Scope {
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return distribution.GlobalScope
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}
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// Repository returns an instance of the repository tied to the registry.
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// Instances should not be shared between goroutines but are cheap to
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// allocate. In general, they should be request scoped.
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func (reg *registry) Repository(ctx context.Context, name string) (distribution.Repository, error) {
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if err := v2.ValidateRespositoryName(name); err != nil {
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return nil, distribution.ErrRepositoryNameInvalid{
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Name: name,
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Reason: err,
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}
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}
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return &repository{
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ctx: ctx,
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registry: reg,
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name: name,
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}, nil
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}
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// repository provides name-scoped access to various services.
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type repository struct {
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*registry
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ctx context.Context
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name string
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}
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// Name returns the name of the repository.
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func (repo *repository) Name() string {
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return repo.name
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}
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// Manifests returns an instance of ManifestService. Instantiation is cheap and
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// may be context sensitive in the future. The instance should be used similar
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// to a request local.
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func (repo *repository) Manifests() distribution.ManifestService {
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return &manifestStore{
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repository: repo,
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revisionStore: &revisionStore{
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repository: repo,
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},
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tagStore: &tagStore{
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repository: repo,
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},
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}
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}
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// Layers returns an instance of the LayerService. Instantiation is cheap and
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// may be context sensitive in the future. The instance should be used similar
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// to a request local.
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func (repo *repository) Layers() distribution.LayerService {
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ls := &layerStore{
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repository: repo,
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}
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if repo.registry.layerInfoCache != nil {
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// TODO(stevvooe): This is not the best place to setup a cache. We would
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// really like to decouple the cache from the backend but also have the
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// manifeset service use the layer service cache. For now, we can simply
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// integrate the cache directly. The main issue is that we have layer
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// access and layer data coupled in a single object. Work is already under
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// way to decouple this.
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return &cachedLayerService{
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LayerService: ls,
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repository: repo,
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ctx: repo.ctx,
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driver: repo.driver,
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blobStore: repo.blobStore,
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cache: repo.registry.layerInfoCache,
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}
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}
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return ls
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}
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func (repo *repository) Signatures() distribution.SignatureService {
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return &signatureStore{
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repository: repo,
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}
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}
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