feat: persist and transfer script command payloads

2026-09-06 11:11:36 +00:00
parent 26ac4c1cac
commit 3f84d3b2f1
18 changed files with 1155 additions and 31 deletions
@@ -102,7 +102,7 @@ func (store *Store) AppendScriptChunk(ctx context.Context, issueUUID domain.UUID
 	if err != nil {
 		return ScriptStatus{}, err
 	}
-	if row.Committed {
+	if row.Committed && offset >= row.ReceivedBytes {
 		return ScriptStatus{}, ErrScriptTerminal
 	}
 	if offset > row.ReceivedBytes {
@@ -123,8 +123,17 @@ func (store *Store) AppendScriptChunk(ctx context.Context, issueUUID domain.UUID
 		if end > row.ReceivedBytes || !bytes.Equal(raw[offset:end], data) {
 			return ScriptStatus{}, ErrScriptOverlap
 		}
+		// A reconnect can replay a chunk after the client has already committed
+		// the complete script. Exact byte-for-byte replays are safe and must be
+		// idempotent; a new byte after commit remains forbidden.
+		if row.Committed {
+			return ScriptStatus{ReceivedBytes: row.ReceivedBytes, Committed: true, Duplicate: true}, tx.Commit()
+		}
 		return ScriptStatus{ReceivedBytes: row.ReceivedBytes, Duplicate: true}, tx.Commit()
 	}
+	if row.Committed {
+		return ScriptStatus{}, ErrScriptTerminal
+	}
 	updatedRaw := append(raw, data...)
 	stored, err := compressScript(updatedRaw)
 	if err != nil {