8000 Add flex redis sample (#408) · kler/python-docs-samples@bb6b63b · GitHub
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Jon Wayne Parrott
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Add flex redis sample (GoogleCloudPlatform#408)
* Making nox ignore env and lib dirs. * Adding redis flexible sample. * Adding redis to travis
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‎.travis.yml

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@@ -3,6 +3,7 @@ language: python
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services:
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- memcached
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- mysql
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- redis-server
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branches:
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only:
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- master

‎appengine/flexible/redis/app.yaml

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runtime: python
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vm: true
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entrypoint: gunicorn -b :$PORT main:app
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runtime_config:
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python_version: 3
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# [START env_variables]
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env_variables:
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REDIS_HOST: your-redis-host
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REDIS_PORT: your-redis-port
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REDIS_PASSWORD: your-redis-password
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# [END env_variables]

‎appengine/flexible/redis/main.py

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# Copyright 2016 Google Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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import os
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from flask import Flask
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import redis
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app = Flask(__name__)
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# [START client]
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redis_host = os.environ.get('REDIS_HOST', 'localhost')
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redis_port = int(os.environ.get('REDIS_PORT', 6379))
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redis_password = os.environ.get('REDIS_PASSWORD', None)
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redis_client = redis.StrictRedis(
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host=redis_host, port=redis_port, password=redis_password)
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# [END client]
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# [START example]
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@app.route('/')
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def index():
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# Set initial value if necessary
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if not redis_client.get('counter'):
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redis_client.set('counter', 0)
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value = redis_client.incr('counter', 1)
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return 'Value is {}'.format(value)
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# [END example]
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@app.errorhandler(500)
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def server_error(e):
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logging.exception('An error occurred during a request.')
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return """
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An internal error occurred: <pre>{}</pre>
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See logs for full stacktrace.
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""".format(e), 500
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if __name__ == '__main__':
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# This is used when running locally. Gunicorn is used to run the
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# application on Google App Engine. See entrypoint in app.yaml.
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app.run(host='127.0.0.1', port=8080, debug=True)

‎appengine/flexible/redis/main_test.py

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# Copyright 2015 Google Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import main
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import pytest
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def test_index():
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try:
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main.redis_client.set('counter', 0)
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except Exception:
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pytest.skip('Redis is unavailable.')
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main.app.testing = True
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client = main.app.test_client()
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r = client.get('/')
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assert r.status_code == 200
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assert '1' in r.data.decode('utf-8')
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r = client.get('/')
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assert r.status_code == 200
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assert '2' in r.data.decode('utf-8')

‎appengine/flexible/redis/requirements.txt

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Flask==0.11.1
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gunicorn==19.6.0
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redis==2.10.5

‎nox.py

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for reqfile in list_files(dirname, 'requirements*.txt'):
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session.install('-r', reqfile)
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# Ignore lib and env directories
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ignore_args = [
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'--ignore', os.path.join(sample, 'lib'),
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'--ignore', os.path.join(sample, 'env')]
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session.run(
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'py.test', sample,
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*pytest_args,
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*(pytest_args + ignore_args),
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success_codes=[0, 5]) # Treat no test collected as success.
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