Properly handle CopyObject with content length 0

This fixes getmoto#8592
jeking3 · Feb 13, 2025 · 36766d5 · 36766d5
1 parent c2a0d9c
commit 36766d5
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/moto/s3/responses.py b/moto/s3/responses.py
@@ -188,7 +188,10 @@ def setup_class(self, request: Any, full_url: str, headers: Any) -> None:  # typ
             and request.headers.get("Content-Encoding", "") == "aws-chunked"
             and hasattr(request, "input_stream")
         ):
-            self.body = request.input_stream.getvalue()
+            if isinstance(request.input_stream, io.BytesIO):
+                self.body = request.input_stream.getvalue()
+            else:
+                self.body = request.input_stream
         if (
             self.request.headers.get("x-amz-content-sha256")
             == "STREAMING-UNSIGNED-PAYLOAD-TRAILER"