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Merge pull request #4081 from liubin/fix/refactor-redis

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refactor redis cache
This commit is contained in:
Milos Gajdos 2023-10-03 16:01:07 +01:00 committed by GitHub
commit ed8423176f
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 14 additions and 13 deletions
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27
registry/storage/cache/redis/redis.go vendored
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@ -13,7 +13,7 @@ import (
"github.com/redis/go-redis/v9"
)
// redisBlobStatService provides an implementation of
// redisBlobDescriptorService provides an implementation of
// BlobDescriptorCacheProvider based on redis. Blob descriptors are stored in
// two parts. The first provide fast access to repository membership through a
// redis set for each repo. The second is a redis hash keyed by the digest of
@ -33,6 +33,8 @@ type redisBlobDescriptorService struct {
// request objects, we can change this to a connection.
}
var _ distribution.BlobDescriptorService = &redisBlobDescriptorService{}
// NewRedisBlobDescriptorCacheProvider returns a new redis-based
// BlobDescriptorCacheProvider using the provided redis connection pool.
func NewRedisBlobDescriptorCacheProvider(pool *redis.Client) cache.BlobDescriptorCacheProvider {
@ -63,7 +65,7 @@ func (rbds *redisBlobDescriptorService) Stat(ctx context.Context, dgst digest.Di
return distribution.Descriptor{}, err
}
return rbds.stat(ctx, rbds.pool, dgst)
return rbds.stat(ctx, dgst)
}
func (rbds *redisBlobDescriptorService) Clear(ctx context.Context, dgst digest.Digest) error {
@ -83,10 +85,8 @@ func (rbds *redisBlobDescriptorService) Clear(ctx context.Context, dgst digest.D
return nil
}
// stat provides an internal stat call that takes a connection parameter. This
// allows some internal management of the connection scope.
func (rbds *redisBlobDescriptorService) stat(ctx context.Context, conn *redis.Client, dgst digest.Digest) (distribution.Descriptor, error) {
cmd := conn.HMGet(ctx, rbds.blobDescriptorHashKey(dgst), "digest", "size", "mediatype")
func (rbds *redisBlobDescriptorService) stat(ctx context.Context, dgst digest.Digest) (distribution.Descriptor, error) {
cmd := rbds.pool.HMGet(ctx, rbds.blobDescriptorHashKey(dgst), "digest", "size", "mediatype")
reply, err := cmd.Result()
if err != nil {
return distribution.Descriptor{}, err
@ -135,10 +135,10 @@ func (rbds *redisBlobDescriptorService) SetDescriptor(ctx context.Context, dgst
return err
}
return rbds.setDescriptor(ctx, rbds.pool, dgst, desc)
return rbds.setDescriptor(ctx, dgst, desc)
}
func (rbds *redisBlobDescriptorService) setDescriptor(ctx context.Context, conn *redis.Client, dgst digest.Digest, desc distribution.Descriptor) error {
func (rbds *redisBlobDescriptorService) setDescriptor(ctx context.Context, dgst digest.Digest, desc distribution.Descriptor) error {
cmd := rbds.pool.HMSet(ctx, rbds.blobDescriptorHashKey(dgst), "digest", desc.Digest.String(), "size", desc.Size)
if cmd.Err() != nil {
return cmd.Err()
@ -180,7 +180,7 @@ func (rsrbds *repositoryScopedRedisBlobDescriptorService) Stat(ctx context.Conte
return distribution.Descriptor{}, distribution.ErrBlobUnknown
}
upstream, err := rsrbds.upstream.stat(ctx, pool, dgst)
upstream, err := rsrbds.upstream.stat(ctx, dgst)
if err != nil {
return distribution.Descriptor{}, err
}
@ -234,16 +234,17 @@ func (rsrbds *repositoryScopedRedisBlobDescriptorService) SetDescriptor(ctx cont
}
}
return rsrbds.setDescriptor(ctx, rsrbds.upstream.pool, dgst, desc)
return rsrbds.setDescriptor(ctx, dgst, desc)
}
func (rsrbds *repositoryScopedRedisBlobDescriptorService) setDescriptor(ctx context.Context, conn *redis.Client, dgst digest.Digest, desc distribution.Descriptor) error {
func (rsrbds *repositoryScopedRedisBlobDescriptorService) setDescriptor(ctx context.Context, dgst digest.Digest, desc distribution.Descriptor) error {
conn := rsrbds.upstream.pool
_, err := conn.SAdd(ctx, rsrbds.repositoryBlobSetKey(rsrbds.repo), dgst.String()).Result()
if err != nil {
return err
}
if err := rsrbds.upstream.setDescriptor(ctx, conn, dgst, desc); err != nil {
if err := rsrbds.upstream.setDescriptor(ctx, dgst, desc); err != nil {
return err
}
@ -256,7 +257,7 @@ func (rsrbds *repositoryScopedRedisBlobDescriptorService) setDescriptor(ctx cont
// Also set the values for the primary descriptor, if they differ by
// algorithm (ie sha256 vs sha512).
if desc.Digest != "" && dgst != desc.Digest && dgst.Algorithm() != desc.Digest.Algorithm() {
if err := rsrbds.setDescriptor(ctx, conn, desc.Digest, desc); err != nil {
if err := rsrbds.setDescriptor(ctx, desc.Digest, desc); err != nil {
return err
}
}