Moving sample

Original sample: https://github.com/GoogleCloudPlatform/appengine-cloudsql-native-mysql-demo-python

appengine/cloudsql/README.md

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+This is an example program showing how to use the native MySQL connections from Google App Engine to Google Cloud SQL.
+
+## Deploying
+
+1. Edit the `unix_socket` in `main.py` to point to a Cloud SQL instance.
+
+2. Upload the app: `appcfg.py update .`.

appengine/cloudsql/app.yaml

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+runtime: python27
+api_version: 1
+threadsafe: yes
+
+handlers:
+- url: /
+  script: main.app
+
+libraries:
+- name: MySQLdb
+  version: "latest"

appengine/cloudsql/main.py

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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.
+import MySQLdb
+import os
+import webapp2
+
+
+class IndexPage(webapp2.RequestHandler):
+    def get(self):
+        self.response.headers['Content-Type'] = 'text/plain'
+
+        if os.getenv('SERVER_SOFTWARE', '').startswith('Google App Engine/'):
+            db = MySQLdb.connect(
+                unix_socket='/cloudsql/my_project:my_instance',
+                user='root')
+        else:
+            db = MySQLdb.connect(host='localhost', user='root')
+
+        cursor = db.cursor()
+        cursor.execute('SHOW VARIABLES')
+        for r in cursor.fetchall():
+            self.response.write('%s\n' % str(r))
+
+
+app = webapp2.WSGIApplication([
+    ('/', IndexPage),
+], debug=True)