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# Copyright 2013 Google Inc. All Rights Reserved.

#

# 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.

"""

Sample App Engine application demonstrating how to connect to Google Cloud SQL

using App Engine's native unix socket.

For more information, see the README.md.

"""

# [START all]

import os

import MySQLdb

import webapp2

CLOUDSQL_PROJECT = '<your-project-id>'

CLOUDSQL_INSTANCE = '<your-cloud-sql-instance>'

class MainPage(webapp2.RequestHandler):

def get(self):

self.response.headers['Content-Type'] = 'text/plain'

# When running on Google App Engine, use the special unix socket

# to connect to Cloud SQL.

if os.getenv('SERVER_SOFTWARE', '').startswith('Google App Engine/'):

db = MySQLdb.connect(

unix_socket='/cloudsql/{}:{}'.format(

CLOUDSQL_PROJECT,

CLOUDSQL_INSTANCE),

user='root')

# When running locally, you can either connect to a local running

# MySQL instance, or connect to your Cloud SQL instance over TCP.

else:

db = MySQLdb.connect(host='localhost', user='root')

cursor = db.cursor()

cursor.execute('SHOW VARIABLES')

for r in cursor.fetchall():

self.response.write('{}\n'.format(r))

app = webapp2.WSGIApplication([

('/', MainPage),

], debug=True)

# [END all]