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package cachecheck
import (
"context"
"reflect"
"testing"
"github.com/docker/distribution"
"github.com/docker/distribution/registry/storage/cache"
"github.com/opencontainers/go-digest"
)
// CheckBlobDescriptorCache takes a cache implementation through a common set
// of operations. If adding new tests, please add them here so new
// implementations get the benefit. This should be used for unit tests.
func CheckBlobDescriptorCache(t *testing.T, provider cache.BlobDescriptorCacheProvider) {
ctx := context.Background()
checkBlobDescriptorCacheEmptyRepository(ctx, t, provider)
checkBlobDescriptorCacheSetAndRead(ctx, t, provider)
checkBlobDescriptorCacheClear(ctx, t, provider)
}
func checkBlobDescriptorCacheEmptyRepository(ctx context.Context, t *testing.T, provider cache.BlobDescriptorCacheProvider) {
if _, err := provider.Stat(ctx, "sha384:abc111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"); err != distribution.ErrBlobUnknown {
t.Fatalf("expected unknown blob error with empty store: %v", err)
}
_, err := provider.RepositoryScoped("")
if err == nil {
t.Fatalf("expected an error when asking for invalid repo")
}
cache, err := provider.RepositoryScoped("foo/bar")
if err != nil {
t.Fatalf("unexpected error getting repository: %v", err)
}
if err := cache.SetDescriptor(ctx, "", distribution.Descriptor{
Digest: "sha384:abc",
Size: 10,
MediaType: "application/octet-stream"}); err != digest.ErrDigestInvalidFormat {
t.Fatalf("expected error with invalid digest: %v", err)
}
if err := cache.SetDescriptor(ctx, "sha384:abc111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111", distribution.Descriptor{
Digest: "",
Size: 10,
MediaType: "application/octet-stream"}); err == nil {
t.Fatalf("expected error setting value on invalid descriptor")
}
if _, err := cache.Stat(ctx, ""); err != digest.ErrDigestInvalidFormat {
t.Fatalf("expected error checking for cache item with empty digest: %v", err)
}
if _, err := cache.Stat(ctx, "sha384:abc111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"); err != distribution.ErrBlobUnknown {
t.Fatalf("expected unknown blob error with empty repo: %v", err)
}
}
func checkBlobDescriptorCacheSetAndRead(ctx context.Context, t *testing.T, provider cache.BlobDescriptorCacheProvider) {
localDigest := digest.Digest("sha384:abc111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111")
expected := distribution.Descriptor{
Digest: "sha256:abc1111111111111111111111111111111111111111111111111111111111111",
Size: 10,
MediaType: "application/octet-stream"}
cache, err := provider.RepositoryScoped("foo/bar")
if err != nil {
t.Fatalf("unexpected error getting scoped cache: %v", err)
}
if err := cache.SetDescriptor(ctx, localDigest, expected); err != nil {
t.Fatalf("error setting descriptor: %v", err)
}
desc, err := cache.Stat(ctx, localDigest)
if err != nil {
t.Fatalf("unexpected error statting fake2:abc: %v", err)
}
if !reflect.DeepEqual(expected, desc) {
t.Fatalf("unexpected descriptor: %#v != %#v", expected, desc)
}
// also check that we set the canonical key ("fake:abc")
desc, err = cache.Stat(ctx, localDigest)
if err != nil {
t.Fatalf("descriptor not returned for canonical key: %v", err)
}
if !reflect.DeepEqual(expected, desc) {
t.Fatalf("unexpected descriptor: %#v != %#v", expected, desc)
}
// ensure that global gets extra descriptor mapping
desc, err = provider.Stat(ctx, localDigest)
if err != nil {
t.Fatalf("expected blob unknown in global cache: %v, %v", err, desc)
}
if !reflect.DeepEqual(desc, expected) {
t.Fatalf("unexpected descriptor: %#v != %#v", expected, desc)
}
// get at it through canonical descriptor
desc, err = provider.Stat(ctx, expected.Digest)
if err != nil {
t.Fatalf("unexpected error checking glboal descriptor: %v", err)
}
if !reflect.DeepEqual(desc, expected) {
t.Fatalf("unexpected descriptor: %#v != %#v", expected, desc)
}
// now, we set the repo local mediatype to something else and ensure it
// doesn't get changed in the provider cache.
expected.MediaType = "application/json"
if err := cache.SetDescriptor(ctx, localDigest, expected); err != nil {
t.Fatalf("unexpected error setting descriptor: %v", err)
}
desc, err = cache.Stat(ctx, localDigest)
if err != nil {
t.Fatalf("unexpected error getting descriptor: %v", err)
}
if !reflect.DeepEqual(desc, expected) {
t.Fatalf("unexpected descriptor: %#v != %#v", desc, expected)
}
desc, err = provider.Stat(ctx, localDigest)
if err != nil {
t.Fatalf("unexpected error getting global descriptor: %v", err)
}
expected.MediaType = "application/octet-stream" // expect original mediatype in global
if !reflect.DeepEqual(desc, expected) {
t.Fatalf("unexpected descriptor: %#v != %#v", desc, expected)
}
}
func checkBlobDescriptorCacheClear(ctx context.Context, t *testing.T, provider cache.BlobDescriptorCacheProvider) {
localDigest := digest.Digest("sha384:def111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111")
expected := distribution.Descriptor{
Digest: "sha256:def1111111111111111111111111111111111111111111111111111111111111",
Size: 10,
MediaType: "application/octet-stream"}
cache, err := provider.RepositoryScoped("foo/bar")
if err != nil {
t.Fatalf("unexpected error getting scoped cache: %v", err)
}
if err := cache.SetDescriptor(ctx, localDigest, expected); err != nil {
t.Fatalf("error setting descriptor: %v", err)
}
desc, err := cache.Stat(ctx, localDigest)
if err != nil {
t.Fatalf("unexpected error statting fake2:abc: %v", err)
}
if !reflect.DeepEqual(expected, desc) {
t.Fatalf("unexpected descriptor: %#v != %#v", expected, desc)
}
err = cache.Clear(ctx, localDigest)
if err != nil {
t.Error(err)
}
if _, err = cache.Stat(ctx, localDigest); err == nil {
t.Fatalf("expected error statting deleted blob: %v", err)
}
}
|
