fix: add missing closes

cmd/silo/main.go

@@ -97,6 +97,8 @@ func run(_ *cobra.Command) error {
 		return fmt.Errorf("%w", err)
 	}
 
+	defer backend.Close()
+
 	writer := silo.NewDumpToStdout()
 
 	driver := silo.NewDriver(backend, writer)

internal/infra/backend.go

@@ -150,11 +150,15 @@ func (b Backend) Store(key string, value string) error {
 	return nil
 }
 
-func (b Backend) Snapshot() silo.Snapshot {
+func (b Backend) Snapshot() silo.Snapshot { //nolint:ireturn
 	return Snapshot{b.db.NewIndexedBatch()}
 }
 
 func (b Backend) Close() error {
+	if err := b.db.Flush(); err != nil {
+		return fmt.Errorf("%w", err)
+	}
+
 	if err := b.db.Close(); err != nil {
 		return fmt.Errorf("%w", err)
 	}

pkg/silo/driver.go

@@ -39,6 +39,8 @@ func NewDriver(backend Backend, writer DumpWriter) *Driver {
 func (d *Driver) Dump() error {
 	snapshot := d.backend.Snapshot()
 
+	defer snapshot.Close()
+
 	for count := 0; ; count++ {
 		entryNode, present, err := snapshot.Next()
 		if err != nil {

test.jsonl

@@ -0,0 +1,5 @@
+{"ID1": 1, "ID2": "1", "ID3": 1.10, "ID4": "00001"}
+{"ID1": 2, "ID2": "2", "ID3": 2.20, "ID4": "00002"}
+{"ID1": 3, "ID4": "00003"}
+{"ID2": "3", "ID3": 3.30}
+{"ID4": "00003", "ID3": 3.30}