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docs: add python quickstart sample (#141)
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* initial boilerplate for samples folder

* basic test and nox setup

* quickstart sample added

* sample and test

* updating test features

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* updated region tags

* removed CLI from sample and moved client creation out of main()

* Update samples/snippets/quickstart.py

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Tim Swast <swast@google.com>
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1 change: 1 addition & 0 deletions samples/AUTHORING_GUIDE.md
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See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/AUTHORING_GUIDE.md
1 change: 1 addition & 0 deletions samples/CONTRIBUTING.md
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See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/CONTRIBUTING.md
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33 changes: 33 additions & 0 deletions samples/snippets/conftest.py
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# Copyright 2021 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.

import os

from google.cloud.bigquery_connection_v1.services import connection_service
import pytest


@pytest.fixture(scope="session")
def project_id() -> str:
return os.environ["GOOGLE_CLOUD_PROJECT"]


@pytest.fixture(scope="session")
def connection_client() -> connection_service.ConnectionServiceClient:
return connection_service.ConnectionServiceClient()


@pytest.fixture(scope="session")
def location() -> str:
return "US"
270 changes: 270 additions & 0 deletions samples/snippets/noxfile.py
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# Copyright 2019 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 __future__ import print_function

import os
from pathlib import Path
import sys
from typing import Callable, Dict, List, Optional

import nox


# WARNING - WARNING - WARNING - WARNING - WARNING
# WARNING - WARNING - WARNING - WARNING - WARNING
# DO NOT EDIT THIS FILE EVER!
# WARNING - WARNING - WARNING - WARNING - WARNING
# WARNING - WARNING - WARNING - WARNING - WARNING

BLACK_VERSION = "black==19.10b0"

# Copy `noxfile_config.py` to your directory and modify it instead.

# `TEST_CONFIG` dict is a configuration hook that allows users to
# modify the test configurations. The values here should be in sync
# with `noxfile_config.py`. Users will copy `noxfile_config.py` into
# their directory and modify it.

TEST_CONFIG = {
# You can opt out from the test for specific Python versions.
"ignored_versions": [],
# Old samples are opted out of enforcing Python type hints
# All new samples should feature them
"enforce_type_hints": False,
# An envvar key for determining the project id to use. Change it
# to 'BUILD_SPECIFIC_GCLOUD_PROJECT' if you want to opt in using a
# build specific Cloud project. You can also use your own string
# to use your own Cloud project.
"gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
# 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
# If you need to use a specific version of pip,
# change pip_version_override to the string representation
# of the version number, for example, "20.2.4"
"pip_version_override": None,
# A dictionary you want to inject into your test. Don't put any
# secrets here. These values will override predefined values.
"envs": {},
}


try:
# Ensure we can import noxfile_config in the project's directory.
sys.path.append(".")
from noxfile_config import TEST_CONFIG_OVERRIDE
except ImportError as e:
print("No user noxfile_config found: detail: {}".format(e))
TEST_CONFIG_OVERRIDE = {}

# Update the TEST_CONFIG with the user supplied values.
TEST_CONFIG.update(TEST_CONFIG_OVERRIDE)


def get_pytest_env_vars() -> Dict[str, str]:
"""Returns a dict for pytest invocation."""
ret = {}

# Override the GCLOUD_PROJECT and the alias.
env_key = TEST_CONFIG["gcloud_project_env"]
# This should error out if not set.
ret["GOOGLE_CLOUD_PROJECT"] = os.environ[env_key]

# Apply user supplied envs.
ret.update(TEST_CONFIG["envs"])
return ret


# DO NOT EDIT - automatically generated.
# All versions used to test samples.
ALL_VERSIONS = ["3.6", "3.7", "3.8", "3.9", "3.10"]

# Any default versions that should be ignored.
IGNORED_VERSIONS = TEST_CONFIG["ignored_versions"]

TESTED_VERSIONS = sorted([v for v in ALL_VERSIONS if v not in IGNORED_VERSIONS])

INSTALL_LIBRARY_FROM_SOURCE = os.environ.get("INSTALL_LIBRARY_FROM_SOURCE", False) in (
"True",
"true",
)

# Error if a python version is missing
nox.options.error_on_missing_interpreters = True

#
# Style Checks
#


def _determine_local_import_names(start_dir: str) -> List[str]:
"""Determines all import names that should be considered "local".
This is used when running the linter to insure that import order is
properly checked.
"""
file_ext_pairs = [os.path.splitext(path) for path in os.listdir(start_dir)]
return [
basename
for basename, extension in file_ext_pairs
if extension == ".py"
or os.path.isdir(os.path.join(start_dir, basename))
and basename not in ("__pycache__")
]


# Linting with flake8.
#
# We ignore the following rules:
# E203: whitespace before ‘:’
# E266: too many leading ‘#’ for block comment
# E501: line too long
# I202: Additional newline in a section of imports
#
# We also need to specify the rules which are ignored by default:
# ['E226', 'W504', 'E126', 'E123', 'W503', 'E24', 'E704', 'E121']
FLAKE8_COMMON_ARGS = [
"--show-source",
"--builtin=gettext",
"--max-complexity=20",
"--import-order-style=google",
"--exclude=.nox,.cache,env,lib,generated_pb2,*_pb2.py,*_pb2_grpc.py",
"--ignore=E121,E123,E126,E203,E226,E24,E266,E501,E704,W503,W504,I202",
"--max-line-length=88",
]


@nox.session
def lint(session: nox.sessions.Session) -> None:
if not TEST_CONFIG["enforce_type_hints"]:
session.install("flake8", "flake8-import-order")
else:
session.install("flake8", "flake8-import-order", "flake8-annotations")

local_names = _determine_local_import_names(".")
args = FLAKE8_COMMON_ARGS + [
"--application-import-names",
",".join(local_names),
".",
]
session.run("flake8", *args)


#
# Black
#


@nox.session
def blacken(session: nox.sessions.Session) -> None:
session.install(BLACK_VERSION)
python_files = [path for path in os.listdir(".") if path.endswith(".py")]

session.run("black", *python_files)


#
# Sample Tests
#


PYTEST_COMMON_ARGS = ["--junitxml=sponge_log.xml"]


def _session_tests(
session: nox.sessions.Session, post_install: Callable = None
) -> None:
if TEST_CONFIG["pip_version_override"]:
pip_version = TEST_CONFIG["pip_version_override"]
session.install(f"pip=={pip_version}")
"""Runs py.test for a particular project."""
if os.path.exists("requirements.txt"):
if os.path.exists("constraints.txt"):
session.install("-r", "requirements.txt", "-c", "constraints.txt")
else:
session.install("-r", "requirements.txt")

if os.path.exists("requirements-test.txt"):
if os.path.exists("constraints-test.txt"):
session.install("-r", "requirements-test.txt", "-c", "constraints-test.txt")
else:
session.install("-r", "requirements-test.txt")

if INSTALL_LIBRARY_FROM_SOURCE:
session.install("-e", _get_repo_root())

if post_install:
post_install(session)

session.run(
"pytest",
*(PYTEST_COMMON_ARGS + session.posargs),
# Pytest will return 5 when no tests are collected. This can happen
# on travis where slow and flaky tests are excluded.
# See http://doc.pytest.org/en/latest/_modules/_pytest/main.html
success_codes=[0, 5],
env=get_pytest_env_vars(),
)


@nox.session(python=ALL_VERSIONS)
def py(session: nox.sessions.Session) -> None:
"""Runs py.test for a sample using the specified version of Python."""
if session.python in TESTED_VERSIONS:
_session_tests(session)
else:
session.skip(
"SKIPPED: {} tests are disabled for this sample.".format(session.python)
)


#
# Readmegen
#


def _get_repo_root() -> Optional[str]:
""" Returns the root folder of the project. """
# Get root of this repository. Assume we don't have directories nested deeper than 10 items.
p = Path(os.getcwd())
for i in range(10):
if p is None:
break
if Path(p / ".git").exists():
return str(p)
# .git is not available in repos cloned via Cloud Build
# setup.py is always in the library's root, so use that instead
# https://github.com/googleapis/synthtool/issues/792
if Path(p / "setup.py").exists():
return str(p)
p = p.parent
raise Exception("Unable to detect repository root.")


GENERATED_READMES = sorted([x for x in Path(".").rglob("*.rst.in")])


@nox.session
@nox.parametrize("path", GENERATED_READMES)
def readmegen(session: nox.sessions.Session, path: str) -> None:
"""(Re-)generates the readme for a sample."""
session.install("jinja2", "pyyaml")
dir_ = os.path.dirname(path)

if os.path.exists(os.path.join(dir_, "requirements.txt")):
session.install("-r", os.path.join(dir_, "requirements.txt"))

in_file = os.path.join(dir_, "README.rst.in")
session.run(
"python", _get_repo_root() + "/scripts/readme-gen/readme_gen.py", in_file
)
38 changes: 38 additions & 0 deletions samples/snippets/noxfile_config.py
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# Copyright 2021 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.

# Default TEST_CONFIG_OVERRIDE for python repos.

# You can copy this file into your directory, then it will be inported from
# the noxfile.py.

# The source of truth:
# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py

TEST_CONFIG_OVERRIDE = {
# You can opt out from the test for specific Python versions.
"ignored_versions": ["2.7"],
# Old samples are opted out of enforcing Python type hints
# All new samples should feature them
"enforce_type_hints": True,
# An envvar key for determining the project id to use. Change it
# to 'BUILD_SPECIFIC_GCLOUD_PROJECT' if you want to opt in using a
# build specific Cloud project. You can also use your own string
# to use your own Cloud project.
"gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
# 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
# A dictionary you want to inject into your test. Don't put any
# secrets here. These values will override predefined values.
"envs": {},
}
31 changes: 31 additions & 0 deletions samples/snippets/quickstart.py
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# Copyright 2021 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 bigqueryconnection_quickstart]

from google.cloud import bigquery_connection_v1 as bq_connection


def main(project_id: str = "your-project-id", location: str = "US") -> None:
"""Prints details and summary information about connections for a given admin project and location"""
client = bq_connection.ConnectionServiceClient()
print(f"List of connections in project {project_id} in location {location}")
req = bq_connection.ListConnectionsRequest(
parent=client.common_location_path(project_id, location)
)
for connection in client.list_connections(request=req):
print(f"\tConnection {connection.friendly_name} ({connection.name})")


# [END bigqueryconnection_quickstart]
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