1d33874951
Go 1.13 and up enforce import paths to be versioned if a project contains a go.mod and has released v2 or up. The current v2.x branches (and releases) do not yet have a go.mod, and therefore are still allowed to be imported with a non-versioned import path (go modules add a `+incompatible` annotation in that case). However, now that this project has a `go.mod` file, incompatible import paths will not be accepted by go modules, and attempting to use code from this repository will fail. This patch uses `v3` for the import-paths (not `v2`), because changing import paths itself is a breaking change, which means that the next release should increment the "major" version to comply with SemVer (as go modules dictate). Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
36 lines
917 B
Go
36 lines
917 B
Go
// Package cache provides facilities to speed up access to the storage
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// backend.
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package cache
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import (
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"fmt"
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"github.com/distribution/distribution/v3"
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)
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// BlobDescriptorCacheProvider provides repository scoped
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// BlobDescriptorService cache instances and a global descriptor cache.
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type BlobDescriptorCacheProvider interface {
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distribution.BlobDescriptorService
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RepositoryScoped(repo string) (distribution.BlobDescriptorService, error)
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}
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// ValidateDescriptor provides a helper function to ensure that caches have
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// common criteria for admitting descriptors.
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func ValidateDescriptor(desc distribution.Descriptor) error {
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if err := desc.Digest.Validate(); err != nil {
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return err
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}
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if desc.Size < 0 {
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return fmt.Errorf("cache: invalid length in descriptor: %v < 0", desc.Size)
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}
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if desc.MediaType == "" {
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return fmt.Errorf("cache: empty mediatype on descriptor: %v", desc)
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}
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return nil
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}
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