Grant Watters 74d442a058 Consider redis.ErrNil as distribution.ErrBlobUnknown for Stat HGET ... * Update redis.go If the dgst key does not exist in the cache when calling HGET, `redis.String` will return an `ErrNil` which we need to translate into `distribution.ErrBlobUnknown` so that the error being returned can be properly handled. This will ensure that `SetDescriptor` is properly called from `cachedBlobStatter::Stat` for `repositoryScopedRedisBlobDescriptorService` which will update the redis cache and be considered as a Miss rather than an Error. cc @manishtomar * Update suite.go Add unit test to ensure missing blobs for scoped repo properly return ErrBlobUnknown when HGET returns redis.ErrNil. (cherry picked from commit dca6b9526a1d30dd218a9f321c4f84ecc4b5e62e) Signed-off-by: Derek McGowan <derek@mcgstyle.net>		2020-03-04 17:51:37 -08:00
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suite.go	Consider redis.ErrNil as distribution.ErrBlobUnknown for Stat HGET	2020-03-04 17:51:37 -08:00