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issue#2135 image pull returns 404 on manifest request if there is storage error

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When get manifest, the handler will try to retrieve it from storage driver. When storage driver is cloud storage, it can fail due to various reasons even if the manifest exists
(like 500, 503, etc. from storage server). Currently manifest handler blindly return 404 which can be confusing to user.

This change will return 404 if the manifest blob doesn't exist, and return 500 UnknownError for all other errors (consistent with the behavior of other handlers).

Signed-off-by: Yu Wang (UC) <yuwa@microsoft.com>
This commit is contained in:
Yu Wang (UC) 2017-01-11 12:10:16 -08:00
parent 69c7f303d5
commit 2e94c22fe4
1 changed files with 20 additions and 4 deletions
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24
registry/handlers/manifests.go
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@ -77,7 +77,11 @@ func (imh *manifestHandler) GetManifest(w http.ResponseWriter, r *http.Request)
tags := imh.Repository.Tags(imh)
desc, err := tags.Get(imh, imh.Tag)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
if _, ok := err.(distribution.ErrTagUnknown); ok {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
} else {
imh.Errors = append(imh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
}
return
}
imh.Digest = desc.Digest
@ -94,7 +98,11 @@ func (imh *manifestHandler) GetManifest(w http.ResponseWriter, r *http.Request)
}
manifest, err = manifests.Get(imh, imh.Digest, options...)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
if _, ok := err.(distribution.ErrManifestUnknownRevision); ok {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
} else {
imh.Errors = append(imh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
}
return
}
@ -161,7 +169,11 @@ func (imh *manifestHandler) GetManifest(w http.ResponseWriter, r *http.Request)
manifest, err = manifests.Get(imh, manifestDigest)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
if _, ok := err.(distribution.ErrManifestUnknownRevision); ok {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
} else {
imh.Errors = append(imh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
}
return
}
@ -191,7 +203,11 @@ func (imh *manifestHandler) convertSchema2Manifest(schema2Manifest *schema2.Dese
blobs := imh.Repository.Blobs(imh)
configJSON, err := blobs.Get(imh, targetDescriptor.Digest)
if err != nil {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestInvalid.WithDetail(err))
if err == distribution.ErrBlobUnknown {
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestInvalid.WithDetail(err))
} else {
imh.Errors = append(imh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
}
return nil, err
}