fix(bigframes): resolve session-scoped API method logging (#18076)

Fixes an issue where API method calls on DataFrame and Series objects
were recorded into global state instead of their specific session,
preventing cross-session and cross-test logging interference.

- Updated `log_adapter._find_session` to detect active sessions directly
from DataFrame and Series instances.
- Added recursion safeguards during session property lookup in
`log_adapter`.


Fixes #<545233537> 🦕

---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: shuoweil

packages/bigframes/bigframes/core/logging/log_adapter.py

@@ -172,14 +172,14 @@ def wrapper(*args, **kwargs):
                 base_name = custom_base_name
 
             full_method_name = f"{base_name.lower()}-{api_method_name}"
-            # Track directly called methods
-            if len(_call_stack) == 0:
-                session = _find_session(*args, **kwargs)
-                add_api_method(full_method_name, session=session)
-
             _call_stack.append(full_method_name)
 
             try:
+                # Track directly called methods
+                if len(_call_stack) == 1:
+                    session = _find_session(*args, **kwargs)
+                    add_api_method(full_method_name, session=session)
+
                 return method(*args, **kwargs)
             except (NotImplementedError, TypeError) as e:
                 # Log method parameters that are implemented in pandas but either missing (TypeError)
@@ -220,12 +220,12 @@ def wrapped(*args, **kwargs):
             property_name = prop.__name__
             full_property_name = f"{class_name.lower()}-{property_name.lower()}"
 
-            if len(_call_stack) == 0:
-                session = _find_session(*args, **kwargs)
-                add_api_method(full_property_name, session=session)
-
             _call_stack.append(full_property_name)
             try:
+                if len(_call_stack) == 1:
+                    session = _find_session(*args, **kwargs)
+                    add_api_method(full_property_name, session=session)
+
                 return prop(*args, **kwargs)
             finally:
                 _call_stack.pop()
@@ -309,21 +309,23 @@ def _is_session_initialized(session):
     Because the method logger could get called before Session.__init__ has a
     chance to run, we use the globals in that case.
     """
-    return hasattr(session, "_api_methods_lock") and hasattr(session, "_api_methods")
+    return hasattr(session, "_api_methods_lock") and isinstance(
+        getattr(session, "_api_methods", None), list
+    )
 
 
 def _find_session(*args, **kwargs):
     # This function cannot import Session at the top level because Session
     # imports log_adapter.
     from bigframes.session import Session
 
-    session = args[0] if args else None
-    if (
-        session is not None
-        and isinstance(session, Session)
-        and _is_session_initialized(session)
-    ):
-        return session
+    for arg in args:
+        if isinstance(arg, Session) and _is_session_initialized(arg):
+            return arg
+        if hasattr(arg, "__dict__") and "_block" in arg.__dict__:
+            session = getattr(arg, "_session", None)
+            if isinstance(session, Session) and _is_session_initialized(session):
+                return session
 
     session = kwargs.get("session")
     if (

packages/bigframes/bigframes/dataframe.py

@@ -753,7 +753,7 @@ def __getattr__(self, key: str):
         # https://github.com/googleapis/python-bigquery-dataframes/issues/728
         # and
         # https://nedbatchelder.com/blog/201010/surprising_getattr_recursion.html
-        if key == "_block":
+        if "_block" not in self.__dict__ or key == "_block":
             raise AttributeError(key)
 
         if key in self._block.column_labels:

packages/bigframes/bigframes/series.py

@@ -1737,7 +1737,7 @@ def __getattr__(self, key: str):
         # https://github.com/googleapis/python-bigquery-dataframes/issues/728
         # and
         # https://nedbatchelder.com/blog/201010/surprising_getattr_recursion.html
-        if key == "_block":
+        if "_block" not in self.__dict__ or key == "_block":
             raise AttributeError(key)
         elif hasattr(pandas.Series, key):
             log_adapter.submit_pandas_labels(