fix: align Context logging methods with MCP spec data type (#2366)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com>

tests/client/test_logging_callback.py

@@ -1,4 +1,4 @@
-from typing import Any, Literal
+from typing import Literal
 
 import pytest
 
@@ -36,24 +36,20 @@ async def test_logging_callback():
         message: str, level: Literal["debug", "info", "warning", "error"], logger: str, ctx: Context
     ) -> bool:
         """Send a log notification to the client."""
-        await ctx.log(level=level, message=message, logger_name=logger)
+        await ctx.log(level=level, data=message, logger_name=logger)
         return True
 
-    @server.tool("test_tool_with_log_extra")
-    async def test_tool_with_log_extra(
-        message: str,
+    @server.tool("test_tool_with_log_dict")
+    async def test_tool_with_log_dict(
         level: Literal["debug", "info", "warning", "error"],
         logger: str,
-        extra_string: str,
-        extra_dict: dict[str, Any],
         ctx: Context,
     ) -> bool:
-        """Send a log notification to the client with extra fields."""
+        """Send a log notification with a dict payload."""
         await ctx.log(
             level=level,
-            message=message,
+            data={"message": "Test log message", "extra_string": "example", "extra_dict": {"a": 1, "b": 2, "c": 3}},
             logger_name=logger,
-            extra={"extra_string": extra_string, "extra_dict": extra_dict},
         )
         return True
 
@@ -84,18 +80,15 @@ async def test_logging_callback():
                 "logger": "test_logger",
             },
         )
-        log_result_with_extra = await client.call_tool(
-            "test_tool_with_log_extra",
+        log_result_with_dict = await client.call_tool(
+            "test_tool_with_log_dict",
             {
-                "message": "Test log message",
                 "level": "info",
                 "logger": "test_logger",
-                "extra_string": "example",
-                "extra_dict": {"a": 1, "b": 2, "c": 3},
             },
         )
         assert log_result.is_error is False
-        assert log_result_with_extra.is_error is False
+        assert log_result_with_dict.is_error is False
         assert len(logging_collector.log_messages) == 2
         # Create meta object with related_request_id added dynamically
         log = logging_collector.log_messages[0]
@@ -103,10 +96,10 @@ async def test_logging_callback():
         assert log.logger == "test_logger"
         assert log.data == "Test log message"
 
-        log_with_extra = logging_collector.log_messages[1]
-        assert log_with_extra.level == "info"
-        assert log_with_extra.logger == "test_logger"
-        assert log_with_extra.data == {
+        log_with_dict = logging_collector.log_messages[1]
+        assert log_with_dict.level == "info"
+        assert log_with_dict.logger == "test_logger"
+        assert log_with_dict.data == {
             "message": "Test log message",
             "extra_string": "example",
             "extra_dict": {"a": 1, "b": 2, "c": 3},