Python: quiet A2AExecutor logging for unmapped content types (#7034)

* Python: quiet A2AExecutor logging for unmapped content types

Tool-use responses include function_call/function_result content that the A2A executor does not surface, causing a WARNING per tool call. Log these at DEBUG and skip instead, matching the outbound content-conversion convention used across the Python chat clients.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: ee74cc55-44df-4fcf-b38f-1f79f2600dfc

* Address PR review: assert debug log args and drop redundant cast

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: ee74cc55-44df-4fcf-b38f-1f79f2600dfc

python/packages/a2a/agent_framework_a2a/_a2a_executor.py

@@ -273,8 +273,10 @@ class A2AExecutor(AgentExecutor):
             elif content.type == "uri" and content.uri:
                 parts.append(Part(url=content.uri, media_type=content.media_type or ""))
             else:
-                # Silently skip unsupported content types
-                logger.warning("A2AExecutor does not yet support content type: %s. Omitted.", content.type)
+                # Content that doesn't map to an A2A part (e.g. intermediate function_call /
+                # function_result from tool use) is skipped; only final user-facing output
+                # (text/data/uri) is surfaced.
+                logger.debug("Skipping unsupported content type for A2A: %s", content.type)
 
         if parts:
             if isinstance(item, AgentResponseUpdate):

python/packages/a2a/tests/test_a2a_executor.py

@@ -842,7 +842,7 @@ class TestA2AExecutorHandleEvents:
         assert call_kwargs["append"] is True
 
     async def test_handle_unsupported_content_type(self, executor: A2AExecutor, mock_updater: MagicMock) -> None:
-        """Test handling messages with unsupported content types."""
+        """Test that unsupported content types are skipped quietly (debug, not warning)."""
         # Arrange
         message = Message(
             contents=[Content(type=cast(Any, "unknown"), text="Some text")],  # type: ignore[arg-type]
@@ -854,7 +854,25 @@ class TestA2AExecutorHandleEvents:
             await executor.handle_events(message, mock_updater)
 
         # Assert
-        mock_logger.warning.assert_called_once()
+        mock_logger.warning.assert_not_called()
+        mock_logger.debug.assert_called_once_with("Skipping unsupported content type for A2A: %s", "unknown")
+        mock_updater.update_status.assert_not_called()
+
+    async def test_handle_intermediate_content_type(self, executor: A2AExecutor, mock_updater: MagicMock) -> None:
+        """Test that intermediate tool content (e.g. function_call) is skipped quietly (debug, not warning)."""
+        # Arrange
+        message = Message(
+            contents=[Content(type="function_call")],
+            role="assistant",
+        )
+
+        # Act
+        with patch("agent_framework_a2a._a2a_executor.logger") as mock_logger:
+            await executor.handle_events(message, mock_updater)
+
+        # Assert
+        mock_logger.warning.assert_not_called()
+        mock_logger.debug.assert_called_once_with("Skipping unsupported content type for A2A: %s", "function_call")
         mock_updater.update_status.assert_not_called()