func TestDelete(t *testing.T) {
sto, cleanup := newTempDiskpacked(t)
defer cleanup()
var (
A = &test.Blob{Contents: "some small blob"}
B = &test.Blob{Contents: strings.Repeat("some middle blob", 100)}
C = &test.Blob{Contents: strings.Repeat("A 8192 bytes length largish blob", 8192/32)}
)
type step func() error
stepAdd := func(tb *test.Blob) step { // add the blob
return func() error {
sb, err := sto.ReceiveBlob(tb.BlobRef(), tb.Reader())
if err != nil {
return fmt.Errorf("ReceiveBlob of %s: %v", sb, err)
}
if sb != tb.SizedRef() {
return fmt.Errorf("Received %v; want %v", sb, tb.SizedRef())
}
return nil
}
}
stepCheck := func(want ...*test.Blob) step { // check the blob
wantRefs := make([]blob.SizedRef, len(want))
for i, tb := range want {
wantRefs[i] = tb.SizedRef()
}
return func() error {
if err := storagetest.CheckEnumerate(sto, wantRefs); err != nil {
return err
}
return nil
}
}
stepDelete := func(tb *test.Blob) step {
return func() error {
if err := sto.RemoveBlobs([]blob.Ref{tb.BlobRef()}); err != nil {
return fmt.Errorf("RemoveBlob(%s): %v", tb.BlobRef(), err)
}
return nil
}
}
var deleteTests = [][]step{
[]step{
stepAdd(A),
stepDelete(A),
stepCheck(),
stepAdd(B),
stepCheck(B),
stepDelete(B),
stepCheck(),
stepAdd(C),
stepCheck(C),
stepAdd(A),
stepCheck(A, C),
stepDelete(A),
stepDelete(C),
stepCheck(),
},
[]step{
stepAdd(A),
stepAdd(B),
stepAdd(C),
stepCheck(A, B, C),
stepDelete(C),
stepCheck(A, B),
},
}
for i, steps := range deleteTests {
for j, s := range steps {
if err := s(); err != nil {
t.Errorf("error at test %d, step %d: %v", i+1, j+1, err)
}
}
}
}
func TestRemoveBlobs(t *testing.T) {
ctx, cancel := context.WithCancel(context.TODO())
defer cancel()
// The basic small cases are handled via storagetest in TestStorage,
// so this only tests removing packed blobs.
small := new(test.Fetcher)
large := new(test.Fetcher)
sto := &storage{
small: small,
large: large,
meta: sorted.NewMemoryKeyValue(),
log: test.NewLogger(t, "blobpacked: "),
}
sto.init()
const fileSize = 1 << 20
fileContents := randBytes(fileSize)
if _, err := schema.WriteFileFromReader(sto, "foo.dat", bytes.NewReader(fileContents)); err != nil {
t.Fatal(err)
}
if small.NumBlobs() != 0 || large.NumBlobs() == 0 {
t.Fatalf("small, large counts == %d, %d; want 0, non-zero", small.NumBlobs(), large.NumBlobs())
}
var all []blob.SizedRef
if err := blobserver.EnumerateAll(ctx, sto, func(sb blob.SizedRef) error {
all = append(all, sb)
return nil
}); err != nil {
t.Fatal(err)
}
// Find the zip
zipBlob, err := singleBlob(sto.large)
if err != nil {
t.Fatalf("failed to find packed zip: %v", err)
}
// The zip file is in use, so verify we can't delete it.
if err := sto.deleteZipPack(zipBlob.Ref); err == nil {
t.Fatalf("zip pack blob deleted but it should not have been allowed")
}
// Delete everything
for len(all) > 0 {
del := all[0].Ref
all = all[1:]
if err := sto.RemoveBlobs([]blob.Ref{del}); err != nil {
t.Fatalf("RemoveBlobs: %v", err)
}
if err := storagetest.CheckEnumerate(sto, all); err != nil {
t.Fatalf("After deleting %v, %v", del, err)
}
}
dRows := func() (n int) {
if err := sorted.ForeachInRange(sto.meta, "d:", "", func(key, value string) error {
if strings.HasPrefix(key, "d:") {
n++
}
return nil
}); err != nil {
t.Fatalf("meta iteration error: %v", err)
}
return
}
if n := dRows(); n == 0 {
t.Fatalf("expected a 'd:' row after deletes")
}
// TODO: test the background pack-deleter loop? figure out its design first.
if err := sto.deleteZipPack(zipBlob.Ref); err != nil {
t.Errorf("error deleting zip %v: %v", zipBlob.Ref, err)
}
if n := dRows(); n != 0 {
t.Errorf("expected the 'd:' row to be deleted")
}
}