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feat: Adding code samples and tests for them (#55)
* feat: Adding code samples and tests for them * chore: Remove unused import. * Update .github/CODEOWNERS Co-authored-by: Bu Sun Kim <8822365+busunkim96@users.noreply.github.com> * chore: Updating samples to meet reviewers suggestions. * chore: Fixing regions. * chore: Adjusting the testing scripts in .kokoro/samples. * Revert "chore: Adjusting the testing scripts in .kokoro/samples." This reverts commit 6d0b4276 * chore: Moving samples tests to dedicated noxfile.py. * chore: Adding 3.6 and 3.7 Python versions to samples noxfile.py * chore: Updating the Samples section to reflect new testing setup. * chore: Updating the Samples README. * chore: add standardized samples noxfile * chore: uncomment sections in synth.py * chore: Changing the waiting for operation part. * chore: Minor changes based on review. * README suggests using `gcloud auth application-default login` which is safer than Service Account key. * The name of created instance now starts with "quickstart-". * Changed one variable name. Co-authored-by: Bu Sun Kim <8822365+busunkim96@users.noreply.github.com> Co-authored-by: Bu Sun Kim <busunkim@google.com> Co-authored-by: Dina Graves Portman <dinagraves@google.com>
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# google-cloud-compute library samples | ||
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These samples demonstrate usage of the google-cloud-compute library to interact | ||
with the Google Compute Engine API. | ||
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## Running the quickstart script | ||
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### Before you begin | ||
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1. If you haven't already, set up a Python Development Environment by following the [python setup guide](https://cloud.google.com/python/setup) and | ||
[create a project](https://cloud.google.com/resource-manager/docs/creating-managing-projects#creating_a_project). | ||
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1. Use `gcloud auth application-default login` to allow the script to authenticate using | ||
your credentials to the Google Cloud APIs. | ||
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### Install requirements | ||
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Create a new virtual environment and install the required libraries. | ||
```bash | ||
virtualenv --python python3 name-of-your-virtualenv | ||
source name-of-your-virtualenv/bin/activate | ||
pip install -r requirements.txt | ||
``` | ||
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### Run the demo | ||
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Run the quickstart script, it will create and destroy a `n1-standard-1` | ||
type machine in the `europe-central2-b` zone. | ||
```bash | ||
python quickstart.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. | ||
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from __future__ import print_function | ||
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import os | ||
from pathlib import Path | ||
import sys | ||
from typing import Callable, Dict, List, Optional | ||
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import nox | ||
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# 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 | ||
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# Copy `noxfile_config.py` to your directory and modify it instead. | ||
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# `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. | ||
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TEST_CONFIG = { | ||
# You can opt out from the test for specific Python versions. | ||
'ignored_versions': ["2.7"], | ||
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# Old samples are opted out of enforcing Python type hints | ||
# All new samples should feature them | ||
'enforce_type_hints': False, | ||
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# 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': {}, | ||
} | ||
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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 = {} | ||
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# Update the TEST_CONFIG with the user supplied values. | ||
TEST_CONFIG.update(TEST_CONFIG_OVERRIDE) | ||
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def get_pytest_env_vars() -> Dict[str, str]: | ||
"""Returns a dict for pytest invocation.""" | ||
ret = {} | ||
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# 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] | ||
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# Apply user supplied envs. | ||
ret.update(TEST_CONFIG['envs']) | ||
return ret | ||
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# DO NOT EDIT - automatically generated. | ||
# All versions used to tested samples. | ||
ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"] | ||
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# Any default versions that should be ignored. | ||
IGNORED_VERSIONS = TEST_CONFIG['ignored_versions'] | ||
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TESTED_VERSIONS = sorted([v for v in ALL_VERSIONS if v not in IGNORED_VERSIONS]) | ||
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INSTALL_LIBRARY_FROM_SOURCE = bool(os.environ.get("INSTALL_LIBRARY_FROM_SOURCE", False)) | ||
# | ||
# Style Checks | ||
# | ||
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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__") | ||
] | ||
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# 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", | ||
] | ||
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@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") | ||
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local_names = _determine_local_import_names(".") | ||
args = FLAKE8_COMMON_ARGS + [ | ||
"--application-import-names", | ||
",".join(local_names), | ||
"." | ||
] | ||
session.run("flake8", *args) | ||
# | ||
# Black | ||
# | ||
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@nox.session | ||
def blacken(session: nox.sessions.Session) -> None: | ||
session.install("black") | ||
python_files = [path for path in os.listdir(".") if path.endswith(".py")] | ||
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session.run("black", *python_files) | ||
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# | ||
# Sample Tests | ||
# | ||
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PYTEST_COMMON_ARGS = ["--junitxml=sponge_log.xml"] | ||
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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") | ||
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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") | ||
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if INSTALL_LIBRARY_FROM_SOURCE: | ||
session.install("-e", _get_repo_root()) | ||
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if post_install: | ||
post_install(session) | ||
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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() | ||
) | ||
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@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 | ||
)) | ||
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# | ||
# Readmegen | ||
# | ||
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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.") | ||
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GENERATED_READMES = sorted([x for x in Path(".").rglob("*.rst.in")]) | ||
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@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) | ||
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if os.path.exists(os.path.join(dir_, "requirements.txt")): | ||
session.install("-r", os.path.join(dir_, "requirements.txt")) | ||
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in_file = os.path.join(dir_, "README.rst.in") | ||
session.run( | ||
"python", _get_repo_root() + "/scripts/readme-gen/readme_gen.py", in_file | ||
) |
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