package storage import ( "github.com/docker/distribution" "github.com/docker/distribution/context" "github.com/docker/distribution/registry/api/v2" "github.com/docker/distribution/registry/storage/cache" storagedriver "github.com/docker/distribution/registry/storage/driver" ) // registry is the top-level implementation of Registry for use in the storage // package. All instances should descend from this object. type registry struct { blobStore *blobStore blobServer distribution.BlobServer statter distribution.BlobStatter // global statter service. blobDescriptorCacheProvider cache.BlobDescriptorCacheProvider } // NewRegistryWithDriver creates a new registry instance from the provided // driver. The resulting registry may be shared by multiple goroutines but is // cheap to allocate. func NewRegistryWithDriver(ctx context.Context, driver storagedriver.StorageDriver, blobDescriptorCacheProvider cache.BlobDescriptorCacheProvider) distribution.Namespace { // create global statter, with cache. var statter distribution.BlobStatter = &blobStatter{ driver: driver, pm: defaultPathMapper, } if blobDescriptorCacheProvider != nil { statter = &cachedBlobStatter{ cache: blobDescriptorCacheProvider, backend: statter, } } bs := &blobStore{ driver: driver, pm: defaultPathMapper, statter: statter, } return ®istry{ blobStore: bs, blobServer: &blobServer{ driver: driver, statter: statter, pathFn: bs.path, }, blobDescriptorCacheProvider: blobDescriptorCacheProvider, } } // Scope returns the namespace scope for a registry. The registry // will only serve repositories contained within this scope. func (reg *registry) Scope() distribution.Scope { return distribution.GlobalScope } // Repository returns an instance of the repository tied to the registry. // Instances should not be shared between goroutines but are cheap to // allocate. In general, they should be request scoped. func (reg *registry) Repository(ctx context.Context, name string) (distribution.Repository, error) { if err := v2.ValidateRespositoryName(name); err != nil { return nil, distribution.ErrRepositoryNameInvalid{ Name: name, Reason: err, } } var descriptorCache distribution.BlobDescriptorService if reg.blobDescriptorCacheProvider != nil { var err error descriptorCache, err = reg.blobDescriptorCacheProvider.RepositoryScoped(name) if err != nil { return nil, err } } return &repository{ ctx: ctx, registry: reg, name: name, descriptorCache: descriptorCache, }, nil } // repository provides name-scoped access to various services. type repository struct { *registry ctx context.Context name string descriptorCache distribution.BlobDescriptorService } // Name returns the name of the repository. func (repo *repository) Name() string { return repo.name } // Manifests returns an instance of ManifestService. Instantiation is cheap and // may be context sensitive in the future. The instance should be used similar // to a request local. func (repo *repository) Manifests() distribution.ManifestService { return &manifestStore{ ctx: repo.ctx, repository: repo, revisionStore: &revisionStore{ ctx: repo.ctx, repository: repo, blobStore: &linkedBlobStore{ ctx: repo.ctx, blobStore: repo.blobStore, repository: repo, statter: &linkedBlobStatter{ blobStore: repo.blobStore, repository: repo, linkPath: manifestRevisionLinkPath, }, // TODO(stevvooe): linkPath limits this blob store to only // manifests. This instance cannot be used for blob checks. linkPath: manifestRevisionLinkPath, }, }, tagStore: &tagStore{ ctx: repo.ctx, repository: repo, blobStore: repo.registry.blobStore, }, } } // Blobs returns an instance of the BlobStore. Instantiation is cheap and // may be context sensitive in the future. The instance should be used similar // to a request local. func (repo *repository) Blobs(ctx context.Context) distribution.BlobStore { var statter distribution.BlobStatter = &linkedBlobStatter{ blobStore: repo.blobStore, repository: repo, linkPath: blobLinkPath, } if repo.descriptorCache != nil { statter = &cachedBlobStatter{ cache: repo.descriptorCache, backend: statter, } } return &linkedBlobStore{ blobStore: repo.blobStore, blobServer: repo.blobServer, statter: statter, repository: repo, ctx: ctx, // TODO(stevvooe): linkPath limits this blob store to only layers. // This instance cannot be used for manifest checks. linkPath: blobLinkPath, } } func (repo *repository) Signatures() distribution.SignatureService { return &signatureStore{ repository: repo, blobStore: repo.blobStore, ctx: repo.ctx, } }