Dead code cleanup: remove Range support from blockstore

Nothing uses it, and offset+limit is a bad query mechanism for
mutating data.

blockstore.go

@@ -33,9 +33,6 @@ type Blockstore interface {
 
 	AllKeys(ctx context.Context) ([]u.Key, error)
 	AllKeysChan(ctx context.Context) (<-chan u.Key, error)
-
-	AllKeysRange(ctx context.Context, offset int, limit int) ([]u.Key, error)
-	AllKeysRangeChan(ctx context.Context, offset int, limit int) (<-chan u.Key, error)
 }
 
 func NewBlockstore(d ds.ThreadSafeDatastore) Blockstore {
@@ -85,22 +82,13 @@ func (s *blockstore) DeleteBlock(k u.Key) error {
 	return s.datastore.Delete(k.DsKey())
 }
 
-func (bs *blockstore) AllKeys(ctx context.Context) ([]u.Key, error) {
-	return bs.AllKeysRange(ctx, 0, 0)
-}
-
-func (bs *blockstore) AllKeysChan(ctx context.Context) (<-chan u.Key, error) {
-	return bs.AllKeysRangeChan(ctx, 0, 0)
-}
-
-// AllKeysRange runs a query for keys from the blockstore.
+// AllKeys runs a query for keys from the blockstore.
 // this is very simplistic, in the future, take dsq.Query as a param?
-// if offset and limit are 0, they are ignored.
 //
-// AllKeysRange respects context
-func (bs *blockstore) AllKeysRange(ctx context.Context, offset int, limit int) ([]u.Key, error) {
+// AllKeys respects context
+func (bs *blockstore) AllKeys(ctx context.Context) ([]u.Key, error) {
 
-	ch, err := bs.AllKeysRangeChan(ctx, offset, limit)
+	ch, err := bs.AllKeysChan(ctx)
 	if err != nil {
 		return nil, err
 	}
@@ -112,15 +100,14 @@ func (bs *blockstore) AllKeysRange(ctx context.Context, offset int, limit int) (
 	return keys, nil
 }
 
-// AllKeysRangeChan runs a query for keys from the blockstore.
+// AllKeysChan runs a query for keys from the blockstore.
 // this is very simplistic, in the future, take dsq.Query as a param?
-// if offset and limit are 0, they are ignored.
 //
-// AllKeysRangeChan respects context
-func (bs *blockstore) AllKeysRangeChan(ctx context.Context, offset int, limit int) (<-chan u.Key, error) {
+// AllKeysChan respects context
+func (bs *blockstore) AllKeysChan(ctx context.Context) (<-chan u.Key, error) {
 
 	// KeysOnly, because that would be _a lot_ of data.
-	q := dsq.Query{KeysOnly: true, Offset: offset, Limit: limit}
+	q := dsq.Query{KeysOnly: true}
 	res, err := bs.datastore.Query(q)
 	if err != nil {
 		return nil, err

blockstore_test.go

@@ -78,23 +78,6 @@ func TestAllKeysSimple(t *testing.T) {
 	expectMatches(t, keys, keys2)
 }
 
-func TestAllKeysOffsetAndLimit(t *testing.T) {
-	N := 30
-	bs, _ := newBlockStoreWithKeys(t, nil, N)
-
-	ctx := context.Background()
-	keys3, err := bs.AllKeysRange(ctx, N/3, N/3)
-	if err != nil {
-		t.Fatal(err)
-	}
-	for _, k3 := range keys3 {
-		t.Log("found ", k3.Pretty())
-	}
-	if len(keys3) != N/3 {
-		t.Errorf("keys3 should be: %d != %d", N/3, len(keys3))
-	}
-}
-
 func TestAllKeysRespectsContext(t *testing.T) {
 	N := 100
 

write_cache.go

@@ -46,17 +46,9 @@ func (w *writecache) Put(b *blocks.Block) error {
 }
 
 func (w *writecache) AllKeys(ctx context.Context) ([]u.Key, error) {
-	return w.blockstore.AllKeysRange(ctx, 0, 0)
+	return w.blockstore.AllKeys(ctx)
 }
 
 func (w *writecache) AllKeysChan(ctx context.Context) (<-chan u.Key, error) {
-	return w.blockstore.AllKeysRangeChan(ctx, 0, 0)
-}
-
-func (w *writecache) AllKeysRange(ctx context.Context, offset int, limit int) ([]u.Key, error) {
-	return w.blockstore.AllKeysRange(ctx, offset, limit)
-}
-
-func (w *writecache) AllKeysRangeChan(ctx context.Context, offset int, limit int) (<-chan u.Key, error) {
-	return w.blockstore.AllKeysRangeChan(ctx, offset, limit)
+	return w.blockstore.AllKeysChan(ctx)
 }