+
+ // Get the block - after trash and untrash sequence
+ n, err = v.Get(context.Background(), TestHash, buf)
+ if err != nil {
+ t.Fatal(err)
+ }
+ if bytes.Compare(buf[:n], TestBlock) != 0 {
+ t.Errorf("Got data %+q, expected %+q", buf[:n], TestBlock)
+ }
+}
+
+func testTrashEmptyTrashUntrash(t TB, factory TestableVolumeFactory) {
+ v := factory(t)
+ defer v.Teardown()
+ defer func(orig arvados.Duration) {
+ theConfig.TrashLifetime = orig
+ }(theConfig.TrashLifetime)
+
+ checkGet := func() error {
+ buf := make([]byte, BlockSize)
+ n, err := v.Get(context.Background(), TestHash, buf)
+ if err != nil {
+ return err
+ }
+ if bytes.Compare(buf[:n], TestBlock) != 0 {
+ t.Fatalf("Got data %+q, expected %+q", buf[:n], TestBlock)
+ }
+
+ _, err = v.Mtime(TestHash)
+ if err != nil {
+ return err
+ }
+
+ err = v.Compare(context.Background(), TestHash, TestBlock)
+ if err != nil {
+ return err
+ }
+
+ indexBuf := new(bytes.Buffer)
+ v.IndexTo("", indexBuf)
+ if !strings.Contains(string(indexBuf.Bytes()), TestHash) {
+ return os.ErrNotExist
+ }
+
+ return nil
+ }
+
+ // First set: EmptyTrash before reaching the trash deadline.
+
+ theConfig.TrashLifetime.Set("1h")
+
+ v.PutRaw(TestHash, TestBlock)
+ v.TouchWithDate(TestHash, time.Now().Add(-2*theConfig.BlobSignatureTTL.Duration()))
+
+ err := checkGet()
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ // Trash the block
+ err = v.Trash(TestHash)
+ if err == MethodDisabledError || err == ErrNotImplemented {
+ // Skip the trash tests for read-only volumes, and
+ // volume types that don't support TrashLifetime>0.
+ return
+ }
+
+ err = checkGet()
+ if err == nil || !os.IsNotExist(err) {
+ t.Fatalf("os.IsNotExist(%v) should have been true", err)
+ }
+
+ err = v.Touch(TestHash)
+ if err == nil || !os.IsNotExist(err) {
+ t.Fatalf("os.IsNotExist(%v) should have been true", err)
+ }
+
+ v.EmptyTrash()
+
+ // Even after emptying the trash, we can untrash our block
+ // because the deadline hasn't been reached.
+ err = v.Untrash(TestHash)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ err = checkGet()
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ err = v.Touch(TestHash)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ // Because we Touch'ed, need to backdate again for next set of tests
+ v.TouchWithDate(TestHash, time.Now().Add(-2*theConfig.BlobSignatureTTL.Duration()))
+
+ // If the only block in the trash has already been untrashed,
+ // most volumes will fail a subsequent Untrash with a 404, but
+ // it's also acceptable for Untrash to succeed.
+ err = v.Untrash(TestHash)
+ if err != nil && !os.IsNotExist(err) {
+ t.Fatalf("Expected success or os.IsNotExist(), but got: %v", err)
+ }
+
+ // The additional Untrash should not interfere with our
+ // already-untrashed copy.
+ err = checkGet()
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ // Untrash might have updated the timestamp, so backdate again
+ v.TouchWithDate(TestHash, time.Now().Add(-2*theConfig.BlobSignatureTTL.Duration()))
+
+ // Second set: EmptyTrash after the trash deadline has passed.
+
+ theConfig.TrashLifetime.Set("1ns")
+
+ err = v.Trash(TestHash)
+ if err != nil {
+ t.Fatal(err)
+ }
+ err = checkGet()
+ if err == nil || !os.IsNotExist(err) {
+ t.Fatalf("os.IsNotExist(%v) should have been true", err)
+ }
+
+ // Even though 1ns has passed, we can untrash because we
+ // haven't called EmptyTrash yet.
+ err = v.Untrash(TestHash)
+ if err != nil {
+ t.Fatal(err)
+ }
+ err = checkGet()
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ // Trash it again, and this time call EmptyTrash so it really
+ // goes away.
+ // (In Azure volumes, un/trash changes Mtime, so first backdate again)
+ v.TouchWithDate(TestHash, time.Now().Add(-2*theConfig.BlobSignatureTTL.Duration()))
+ err = v.Trash(TestHash)
+ err = checkGet()
+ if err == nil || !os.IsNotExist(err) {
+ t.Fatalf("os.IsNotExist(%v) should have been true", err)
+ }
+ v.EmptyTrash()
+
+ // Untrash won't find it
+ err = v.Untrash(TestHash)
+ if err == nil || !os.IsNotExist(err) {
+ t.Fatalf("os.IsNotExist(%v) should have been true", err)
+ }
+
+ // Get block won't find it
+ err = checkGet()
+ if err == nil || !os.IsNotExist(err) {
+ t.Fatalf("os.IsNotExist(%v) should have been true", err)
+ }
+
+ // Third set: If the same data block gets written again after
+ // being trashed, and then the trash gets emptied, the newer
+ // un-trashed copy doesn't get deleted along with it.
+
+ v.PutRaw(TestHash, TestBlock)
+ v.TouchWithDate(TestHash, time.Now().Add(-2*theConfig.BlobSignatureTTL.Duration()))
+
+ theConfig.TrashLifetime.Set("1ns")
+ err = v.Trash(TestHash)
+ if err != nil {
+ t.Fatal(err)
+ }
+ err = checkGet()
+ if err == nil || !os.IsNotExist(err) {
+ t.Fatalf("os.IsNotExist(%v) should have been true", err)
+ }
+
+ v.PutRaw(TestHash, TestBlock)
+ v.TouchWithDate(TestHash, time.Now().Add(-2*theConfig.BlobSignatureTTL.Duration()))
+
+ // EmptyTrash should not delete the untrashed copy.
+ v.EmptyTrash()
+ err = checkGet()
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ // Fourth set: If the same data block gets trashed twice with
+ // different deadlines A and C, and then the trash is emptied
+ // at intermediate time B (A < B < C), it is still possible to
+ // untrash the block whose deadline is "C".
+
+ v.PutRaw(TestHash, TestBlock)
+ v.TouchWithDate(TestHash, time.Now().Add(-2*theConfig.BlobSignatureTTL.Duration()))
+
+ theConfig.TrashLifetime.Set("1ns")
+ err = v.Trash(TestHash)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ v.PutRaw(TestHash, TestBlock)
+ v.TouchWithDate(TestHash, time.Now().Add(-2*theConfig.BlobSignatureTTL.Duration()))
+
+ theConfig.TrashLifetime.Set("1h")
+ err = v.Trash(TestHash)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ // EmptyTrash should not prevent us from recovering the
+ // time.Hour ("C") trash
+ v.EmptyTrash()
+ err = v.Untrash(TestHash)
+ if err != nil {
+ t.Fatal(err)
+ }
+ err = checkGet()
+ if err != nil {
+ t.Fatal(err)