From 727a957ad1e09af77c19082bee7d7b4aefe13fc9 Mon Sep 17 00:00:00 2001 From: Jennifer Davis Date: Tue, 3 Nov 2026 23:31:53 +0000 Subject: [PATCH] feat(bigquery): add bigquery_query_biglake_gcs_table sample to query a permanent BigLake table on Cloud Storage Problem: The BigQuery documentation (https://cloud.google.com/bigquery/docs/query-cloud-storage-using-biglake) needs a standalone, tested Python code sample demonstrating how to query a permanent BigLake table on Cloud Storage (region tag `bigquery_query_biglake_gcs_table`). Solution: - Add `query_biglake_gcs_table(project_id: str, dataset_id: str, table_id: str) -> None` in `bigquery/biglake/bigquery_query_biglake_gcs_table.py` (Query structured files stored in Cloud Storage through a permanent BigLake table backed by a Cloud Resource connection.) - Add unit tests (`bigquery/biglake/bigquery_query_biglake_gcs_table_test.py`) covering both the success path and API error handling (`GoogleAPICallError`) --- .../bigquery_query_biglake_gcs_table.py | 73 +++++++++++++++++++ .../bigquery_query_biglake_gcs_table_test.py | 72 ++++++++++++++++++ bigquery/biglake/noxfile_config.py | 23 ++++++ bigquery/biglake/requirements-test.txt | 1 + bigquery/biglake/requirements.txt | 2 + 5 files changed, 171 insertions(+) create mode 100644 bigquery/biglake/bigquery_query_biglake_gcs_table.py create mode 100644 bigquery/biglake/bigquery_query_biglake_gcs_table_test.py create mode 100644 bigquery/biglake/noxfile_config.py create mode 100644 bigquery/biglake/requirements-test.txt create mode 100644 bigquery/biglake/requirements.txt diff --git a/bigquery/biglake/bigquery_query_biglake_gcs_table.py b/bigquery/biglake/bigquery_query_biglake_gcs_table.py new file mode 100644 index 00000000000..2856c6faa32 --- /dev/null +++ b/bigquery/biglake/bigquery_query_biglake_gcs_table.py @@ -0,0 +1,73 @@ +# 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 +# +# https://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. + +# [START bigquery_query_biglake_gcs_table] +import sys + +from google.api_core import exceptions +from google.cloud import bigquery + + +def query_biglake_gcs_table( + project_id: str, + dataset_id: str, + table_id: str, +) -> None: + """Queries a BigLake table backed by Cloud Storage using GoogleSQL. + + Args: + project_id: Google Cloud project ID (for example, 'example-project'). + dataset_id: BigQuery dataset ID containing the BigLake table + (for example, 'example_dataset'). + table_id: BigLake table ID to query (for example, 'example_biglake_table'). + """ + client = bigquery.Client(project=project_id) + table_ref = f"{project_id}.{dataset_id}.{table_id}" + # BigLake delegates Cloud Storage access to the table's Cloud Resource connection, + # allowing standard SQL queries with fine-grained governance. + sql = f""" + SELECT + id, + label, + score + FROM `{table_ref}` + ORDER BY score DESC, id ASC + LIMIT 10; + """ + + try: + print(f"Querying BigLake table: {table_ref}") + query_job = client.query(sql) + rows = list(query_job.result()) + except exceptions.NotFound as err: + print( + f"error: BigLake table '{table_id}' not found in dataset '{dataset_id}' " + f"for project '{project_id}': {err.message}", + file=sys.stderr, + ) + return + except exceptions.GoogleAPICallError as err: + print( + f"error: failed to query BigLake table '{table_id}' in dataset " + f"'{dataset_id}' for project '{project_id}': {err.message}", + file=sys.stderr, + ) + return + + print(f"Resource ID: {table_ref}") + print(f"Job ID: {query_job.job_id}") + print(f"Rows Returned: {len(rows)}") + + +# [END bigquery_query_biglake_gcs_table] diff --git a/bigquery/biglake/bigquery_query_biglake_gcs_table_test.py b/bigquery/biglake/bigquery_query_biglake_gcs_table_test.py new file mode 100644 index 00000000000..a6057c803a4 --- /dev/null +++ b/bigquery/biglake/bigquery_query_biglake_gcs_table_test.py @@ -0,0 +1,72 @@ +# 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 +# +# https://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 unittest import mock + +import bigquery_query_biglake_gcs_table +from google.api_core import exceptions +import pytest + + +def test_query_biglake_gcs_table_success( + monkeypatch: pytest.MonkeyPatch, + capsys: pytest.CaptureFixture[str], +) -> None: + mock_client = mock.MagicMock() + mock_job = mock.MagicMock() + mock_job.job_id = "example-job-123" + mock_row = mock.MagicMock() + mock_job.result.return_value = [mock_row] + mock_client.query.return_value = mock_job + monkeypatch.setattr( + bigquery_query_biglake_gcs_table.bigquery, + "Client", + lambda project=None: mock_client, + ) + + bigquery_query_biglake_gcs_table.query_biglake_gcs_table( + project_id="example-project", + dataset_id="example_dataset", + table_id="example_biglake_table", + ) + + captured = capsys.readouterr() + assert "Resource ID:" in captured.out + assert "example-project" in captured.out + assert mock_client.query.called + + +def test_query_biglake_gcs_table_error( + monkeypatch: pytest.MonkeyPatch, + capsys: pytest.CaptureFixture[str], +) -> None: + mock_client = mock.MagicMock() + mock_job = mock.MagicMock() + mock_job.result.side_effect = exceptions.NotFound("resource error") + mock_client.query.return_value = mock_job + monkeypatch.setattr( + bigquery_query_biglake_gcs_table.bigquery, + "Client", + lambda project=None: mock_client, + ) + + bigquery_query_biglake_gcs_table.query_biglake_gcs_table( + project_id="example-project", + dataset_id="example_dataset", + table_id="example_biglake_table", + ) + + captured = capsys.readouterr() + assert "error:" in captured.err + assert "example-project" in captured.err diff --git a/bigquery/biglake/noxfile_config.py b/bigquery/biglake/noxfile_config.py new file mode 100644 index 00000000000..63902aa8c7f --- /dev/null +++ b/bigquery/biglake/noxfile_config.py @@ -0,0 +1,23 @@ +# 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 +# +# https://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. + +TEST_CONFIG_OVERRIDE = { + # You can opt out from the test for specific Python versions. + "ignored_versions": ["2.7", "3.7", "3.8", "3.9", "3.10", "3.11"], + # Enforce type hints on new samples. + "enforce_type_hints": True, + "gcloud_project_env": "GOOGLE_CLOUD_PROJECT", + "pip_version_override": None, + "envs": {}, +} diff --git a/bigquery/biglake/requirements-test.txt b/bigquery/biglake/requirements-test.txt new file mode 100644 index 00000000000..c9e154ba440 --- /dev/null +++ b/bigquery/biglake/requirements-test.txt @@ -0,0 +1 @@ +pytest==9.0.3; python_version >= "3.10" diff --git a/bigquery/biglake/requirements.txt b/bigquery/biglake/requirements.txt new file mode 100644 index 00000000000..af6312b7e7f --- /dev/null +++ b/bigquery/biglake/requirements.txt @@ -0,0 +1,2 @@ +google-cloud-bigquery==3.47.0 +google-cloud-bigquery-storage==2.43.0