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Manifest and layer soft deletion.

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Implement the delete API by implementing soft delete for layers
and blobs by removing link files and updating the blob descriptor
cache.  Deletion is configurable - if it is disabled API calls
will return an unsupported error.

We invalidate the blob descriptor cache by changing the linkedBlobStore's
blobStatter to a blobDescriptorService and naming it blobAccessController.

Delete() is added throughout the relevant API to support this functionality.

Signed-off-by: Richard Scothern <richard.scothern@gmail.com>
This commit is contained in:
Richard 2015-05-27 10:52:22 -07:00 • committed by Richard Scothern
parent 7dbe35176d
commit 390bb97a88
21 changed files with 816 additions and 92 deletions
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30
docs/storage/registry.go
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@ -15,15 +15,16 @@ type registry struct {
blobServer distribution.BlobServer
statter distribution.BlobStatter // global statter service.
blobDescriptorCacheProvider cache.BlobDescriptorCacheProvider
deleteEnabled bool
}
// 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 {
func NewRegistryWithDriver(ctx context.Context, driver storagedriver.StorageDriver, blobDescriptorCacheProvider cache.BlobDescriptorCacheProvider, deleteEnabled bool) distribution.Namespace {
// create global statter, with cache.
var statter distribution.BlobStatter = &blobStatter{
var statter distribution.BlobDescriptorService = &blobStatter{
driver: driver,
pm: defaultPathMapper,
}
@ -46,6 +47,7 @@ func NewRegistryWithDriver(ctx context.Context, driver storagedriver.StorageDriv
pathFn: bs.path,
},
blobDescriptorCacheProvider: blobDescriptorCacheProvider,
deleteEnabled: deleteEnabled,
}
}
@ -107,10 +109,11 @@ func (repo *repository) Manifests(ctx context.Context, options ...distribution.M
ctx: ctx,
repository: repo,
blobStore: &linkedBlobStore{
ctx: ctx,
blobStore: repo.blobStore,
repository: repo,
statter: &linkedBlobStatter{
ctx: ctx,
blobStore: repo.blobStore,
repository: repo,
deleteEnabled: repo.registry.deleteEnabled,
blobAccessController: &linkedBlobStatter{
blobStore: repo.blobStore,
repository: repo,
linkPath: manifestRevisionLinkPath,
@ -143,7 +146,7 @@ func (repo *repository) Manifests(ctx context.Context, options ...distribution.M
// 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{
var statter distribution.BlobDescriptorService = &linkedBlobStatter{
blobStore: repo.blobStore,
repository: repo,
linkPath: blobLinkPath,
@ -154,15 +157,16 @@ func (repo *repository) Blobs(ctx context.Context) distribution.BlobStore {
}
return &linkedBlobStore{
blobStore: repo.blobStore,
blobServer: repo.blobServer,
statter: statter,
repository: repo,
ctx: ctx,
blobStore: repo.blobStore,
blobServer: repo.blobServer,
blobAccessController: 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,
linkPath: blobLinkPath,
deleteEnabled: repo.registry.deleteEnabled,
}
}