1 files changed, 6 insertions, 0 deletions
diff --git a/libs/protoutil/src/ProtoOutputStream.cpp b/libs/protoutil/src/ProtoOutputStream.cpp
index 9d8ee729a80d..1904d40ea67a 100644
--- a/libs/protoutil/src/ProtoOutputStream.cpp
+++ b/libs/protoutil/src/ProtoOutputStream.cpp
@@ -295,6 +295,12 @@ ProtoOutputStream::end(long long token)
     }
 }
 
+size_t
+ProtoOutputStream::bytesWritten()
+{
+    return mBuffer.size();
+}
+
 bool
 ProtoOutputStream::compact() {
     if (mCompact) return true;