refactor: move log_adapter.py under logging/ directory

bigframes/bigquery/__init__.py

@@ -60,7 +60,7 @@
 from bigframes.bigquery._operations.search import create_vector_index, vector_search
 from bigframes.bigquery._operations.sql import sql_scalar
 from bigframes.bigquery._operations.struct import struct
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 
 _functions = [
     # approximate aggregate ops

bigframes/bigquery/_operations/ai.py

@@ -26,7 +26,8 @@
 from bigframes import clients, dataframe, dtypes
 from bigframes import pandas as bpd
 from bigframes import series, session
-from bigframes.core import convert, log_adapter
+from bigframes.core import convert
+from bigframes.core.logging import log_adapter
 from bigframes.ml import core as ml_core
 from bigframes.operations import ai_ops, output_schemas
 

bigframes/bigquery/_operations/ml.py

@@ -20,7 +20,7 @@
 import google.cloud.bigquery
 import pandas as pd
 
-import bigframes.core.log_adapter as log_adapter
+import bigframes.core.logging.log_adapter as log_adapter
 import bigframes.core.sql.ml
 import bigframes.dataframe as dataframe
 import bigframes.ml.base

bigframes/core/groupby/dataframe_group_by.py

@@ -26,10 +26,10 @@
 from bigframes import session
 from bigframes.core import agg_expressions
 from bigframes.core import expression as ex
-from bigframes.core import log_adapter
 import bigframes.core.block_transforms as block_ops
 import bigframes.core.blocks as blocks
 from bigframes.core.groupby import aggs, group_by, series_group_by
+from bigframes.core.logging import log_adapter
 import bigframes.core.ordering as order
 import bigframes.core.utils as utils
 import bigframes.core.validations as validations

bigframes/core/groupby/series_group_by.py

@@ -25,10 +25,10 @@
 
 from bigframes import session
 from bigframes.core import expression as ex
-from bigframes.core import log_adapter
 import bigframes.core.block_transforms as block_ops
 import bigframes.core.blocks as blocks
 from bigframes.core.groupby import aggs, group_by
+from bigframes.core.logging import log_adapter
 import bigframes.core.ordering as order
 import bigframes.core.utils as utils
 import bigframes.core.validations as validations

bigframes/core/logging/__init__.py

@@ -0,0 +1,17 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from bigframes.core.logging import log_adapter
+
+__all__ = ["log_adapter"]

bigframes/core/window/rolling.py

@@ -24,8 +24,9 @@
 from bigframes import dtypes
 from bigframes.core import agg_expressions
 from bigframes.core import expression as ex
-from bigframes.core import log_adapter, ordering, utils, window_spec
+from bigframes.core import ordering, utils, window_spec
 import bigframes.core.blocks as blocks
+from bigframes.core.logging import log_adapter
 from bigframes.core.window import ordering as window_ordering
 import bigframes.operations.aggregations as agg_ops
 

bigframes/dataframe.py

@@ -55,7 +55,7 @@
 
 import bigframes.constants
 import bigframes.core
-from bigframes.core import agg_expressions, log_adapter
+from bigframes.core import agg_expressions
 import bigframes.core.block_transforms as block_ops
 import bigframes.core.blocks as blocks
 import bigframes.core.convert
@@ -66,6 +66,7 @@
 import bigframes.core.indexers as indexers
 import bigframes.core.indexes as indexes
 import bigframes.core.interchange
+from bigframes.core.logging import log_adapter
 import bigframes.core.ordering as order
 import bigframes.core.utils as utils
 import bigframes.core.validations as validations

bigframes/ml/cluster.py

@@ -24,7 +24,7 @@
 import pandas as pd
 
 import bigframes
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 from bigframes.ml import base, core, globals, utils
 import bigframes.pandas as bpd
 

bigframes/ml/compose.py

@@ -27,8 +27,8 @@
 import bigframes_vendored.sklearn.compose._column_transformer
 from google.cloud import bigquery
 
-from bigframes.core import log_adapter
 import bigframes.core.compile.googlesql as sql_utils
+from bigframes.core.logging import log_adapter
 import bigframes.core.utils as core_utils
 from bigframes.ml import base, core, globals, impute, preprocessing, utils
 import bigframes.pandas as bpd

bigframes/ml/decomposition.py

@@ -23,7 +23,7 @@
 import bigframes_vendored.sklearn.decomposition._pca
 from google.cloud import bigquery
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 from bigframes.ml import base, core, globals, utils
 import bigframes.pandas as bpd
 import bigframes.session

bigframes/ml/ensemble.py

@@ -23,7 +23,7 @@
 import bigframes_vendored.xgboost.sklearn
 from google.cloud import bigquery
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 import bigframes.dataframe
 from bigframes.ml import base, core, globals, utils
 import bigframes.session

bigframes/ml/forecasting.py

@@ -20,7 +20,7 @@
 
 from google.cloud import bigquery
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 from bigframes.ml import base, core, globals, utils
 import bigframes.pandas as bpd
 import bigframes.session

bigframes/ml/imported.py

@@ -20,7 +20,7 @@
 
 from google.cloud import bigquery
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 from bigframes.ml import base, core, globals, utils
 import bigframes.pandas as bpd
 import bigframes.session

bigframes/ml/impute.py

@@ -22,7 +22,7 @@
 
 import bigframes_vendored.sklearn.impute._base
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 import bigframes.core.utils as core_utils
 from bigframes.ml import base, core, globals, utils
 import bigframes.pandas as bpd

bigframes/ml/linear_model.py

@@ -24,7 +24,7 @@
 import bigframes_vendored.sklearn.linear_model._logistic
 from google.cloud import bigquery
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 from bigframes.ml import base, core, globals, utils
 import bigframes.pandas as bpd
 import bigframes.session

bigframes/ml/llm.py

@@ -24,7 +24,8 @@
 
 from bigframes import dtypes, exceptions
 import bigframes.bigquery as bbq
-from bigframes.core import blocks, global_session, log_adapter
+from bigframes.core import blocks, global_session
+from bigframes.core.logging import log_adapter
 import bigframes.dataframe
 from bigframes.ml import base, core, globals, utils
 import bigframes.series

bigframes/ml/model_selection.py

@@ -26,7 +26,7 @@
 import bigframes_vendored.sklearn.model_selection._validation as vendored_model_selection_validation
 import pandas as pd
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 from bigframes.ml import utils
 import bigframes.pandas as bpd
 

bigframes/ml/pipeline.py

@@ -24,7 +24,7 @@
 import bigframes_vendored.sklearn.pipeline
 from google.cloud import bigquery
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 import bigframes.dataframe
 from bigframes.ml import (
     base,

bigframes/ml/preprocessing.py

@@ -26,7 +26,7 @@
 import bigframes_vendored.sklearn.preprocessing._label
 import bigframes_vendored.sklearn.preprocessing._polynomial
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 import bigframes.core.utils as core_utils
 from bigframes.ml import base, core, globals, utils
 import bigframes.pandas as bpd

bigframes/ml/remote.py

@@ -19,7 +19,8 @@
 from typing import Mapping, Optional
 import warnings
 
-from bigframes.core import global_session, log_adapter
+from bigframes.core import global_session
+from bigframes.core.logging import log_adapter
 import bigframes.dataframe
 import bigframes.exceptions as bfe
 from bigframes.ml import base, core, globals, utils

bigframes/operations/ai.py

@@ -20,7 +20,8 @@
 import warnings
 
 from bigframes import dtypes, exceptions, options
-from bigframes.core import guid, log_adapter
+from bigframes.core import guid
+from bigframes.core.logging import log_adapter
 
 
 @log_adapter.class_logger

bigframes/operations/blob.py

@@ -23,7 +23,7 @@
 import requests
 
 from bigframes import clients, dtypes
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 import bigframes.dataframe
 import bigframes.exceptions as bfe
 import bigframes.operations as ops

bigframes/operations/datetimes.py

@@ -22,7 +22,7 @@
 import pandas
 
 from bigframes import dataframe, dtypes, series
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 import bigframes.operations as ops
 
 _ONE_DAY = pandas.Timedelta("1D")

bigframes/operations/lists.py

@@ -19,7 +19,7 @@
 
 import bigframes_vendored.pandas.core.arrays.arrow.accessors as vendoracessors
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 import bigframes.operations as ops
 from bigframes.operations._op_converters import convert_index, convert_slice
 import bigframes.series as series

bigframes/operations/plotting.py

@@ -17,7 +17,7 @@
 import bigframes_vendored.constants as constants
 import bigframes_vendored.pandas.plotting._core as vendordt
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 import bigframes.operations._matplotlib as bfplt
 
 

bigframes/operations/semantics.py

@@ -21,7 +21,8 @@
 import numpy as np
 
 from bigframes import dtypes, exceptions
-from bigframes.core import guid, log_adapter
+from bigframes.core import guid
+from bigframes.core.logging import log_adapter
 
 
 @log_adapter.class_logger

bigframes/operations/strings.py

@@ -20,8 +20,8 @@
 import bigframes_vendored.constants as constants
 import bigframes_vendored.pandas.core.strings.accessor as vendorstr
 
-from bigframes.core import log_adapter
 import bigframes.core.indexes.base as indices
+from bigframes.core.logging import log_adapter
 import bigframes.dataframe as df
 import bigframes.operations as ops
 from bigframes.operations._op_converters import convert_index, convert_slice

bigframes/operations/structs.py

@@ -17,7 +17,8 @@
 import bigframes_vendored.pandas.core.arrays.arrow.accessors as vendoracessors
 import pandas as pd
 
-from bigframes.core import backports, log_adapter
+from bigframes.core import backports
+from bigframes.core.logging import log_adapter
 import bigframes.dataframe
 import bigframes.operations
 import bigframes.series

bigframes/pandas/__init__.py

@@ -27,9 +27,9 @@
 import pandas
 
 import bigframes._config as config
-from bigframes.core import log_adapter
 import bigframes.core.global_session as global_session
 import bigframes.core.indexes
+from bigframes.core.logging import log_adapter
 from bigframes.core.reshape.api import concat, crosstab, cut, get_dummies, merge, qcut
 import bigframes.dataframe
 import bigframes.functions._utils as bff_utils

bigframes/series.py

@@ -49,13 +49,14 @@
 import typing_extensions
 
 import bigframes.core
-from bigframes.core import agg_expressions, groupby, log_adapter
+from bigframes.core import agg_expressions, groupby
 import bigframes.core.block_transforms as block_ops
 import bigframes.core.blocks as blocks
 import bigframes.core.expression as ex
 import bigframes.core.identifiers as ids
 import bigframes.core.indexers
 import bigframes.core.indexes as indexes
+from bigframes.core.logging import log_adapter
 import bigframes.core.ordering as order
 import bigframes.core.scalar as scalars
 import bigframes.core.utils as utils

bigframes/session/__init__.py

@@ -67,10 +67,11 @@
 import bigframes.clients
 import bigframes.constants
 import bigframes.core
-from bigframes.core import blocks, log_adapter, utils
+from bigframes.core import blocks, utils
 import bigframes.core.events
 import bigframes.core.indexes
 import bigframes.core.indexes.multi
+from bigframes.core.logging import log_adapter
 import bigframes.core.pyformat
 import bigframes.formatting_helpers
 import bigframes.functions._function_session as bff_session

bigframes/session/_io/bigquery/__init__.py

@@ -32,9 +32,9 @@
 import google.cloud.bigquery._job_helpers
 import google.cloud.bigquery.table
 
-from bigframes.core import log_adapter
 import bigframes.core.compile.googlesql as googlesql
 import bigframes.core.events
+from bigframes.core.logging import log_adapter
 import bigframes.core.sql
 import bigframes.session.metrics
 

bigframes/streaming/__init__.py

@@ -17,8 +17,8 @@
 import inspect
 import sys
 
-from bigframes.core import log_adapter
 import bigframes.core.global_session as global_session
+from bigframes.core.logging import log_adapter
 from bigframes.pandas.io.api import _set_default_session_location_if_possible
 import bigframes.session
 import bigframes.streaming.dataframe as streaming_dataframe

bigframes/streaming/dataframe.py

@@ -27,7 +27,8 @@
 import pandas as pd
 
 from bigframes import dataframe
-from bigframes.core import log_adapter, nodes
+from bigframes.core import nodes
+from bigframes.core.logging import log_adapter
 import bigframes.exceptions as bfe
 import bigframes.session
 

tests/unit/core/logging/__init__.py

@@ -0,0 +1,13 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.

tests/unit/core/test_log_adapter.py → tests/unit/core/logging/test_log_adapter.py

@@ -17,7 +17,7 @@
 from google.cloud import bigquery
 import pytest
 
-from bigframes.core import log_adapter
+from bigframes.core.logging import log_adapter
 
 # The limit is 64 (https://cloud.google.com/bigquery/docs/labels-intro#requirements),
 # but leave a few spare for internal labels to be added.

tests/unit/session/test_io_bigquery.py

@@ -23,8 +23,8 @@
 import pytest
 
 import bigframes
-from bigframes.core import log_adapter
 import bigframes.core.events
+from bigframes.core.logging import log_adapter
 import bigframes.pandas as bpd
 import bigframes.session._io.bigquery
 import bigframes.session._io.bigquery as io_bq