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feat: add sqlserver sample
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‎cloud_sql/sqlserver/pdo/README.md‎

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# Connection to Cloud SQL - SQL Server
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## Before you begin
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1. This code sample requires the `pdo_sqlsrv` extension to be installed and enabled. For more information, including getting started guides, refer to the [source repository](https://github.com/Microsoft/msphpsql).
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2. Before you use this code sample, you need to have [Composer](https://getcomposer.org/) installed or downloaded into this folder. Download instructions can be found [here](https://getcomposer.org/download/).
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3. Create a SQL Server Cloud SQL Instance by following these [instructions](https://cloud.google.com/sql/docs/sqlserver/create-instance). Note the connection string, database user, and database password that you create.
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4. Create a database for your application by following these [instructions](https://cloud.google.com/sql/docs/sqlserver/create-manage-databases). Note the database name.
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5. Create a service account with the 'Cloud SQL Client' permissions by following these [instructions](https://cloud.google.com/sql/docs/postgres/connect-external-app#4_if_required_by_your_authentication_method_create_a_service_account). Download a JSON key to use to authenticate your connection.
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6. Use the information noted in the previous steps:
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```bash
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export GOOGLE_APPLICATION_CREDENTIALS=/path/to/service/account/key.json
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export CLOUD_SQL_CONNECTION_NAME='<MY-PROJECT>:<INSTANCE-REGION>:<MY-DATABASE>'
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export DB_USER='my-db-user'
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export DB_PASS='my-db-pass'
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export DB_NAME='my-db-name'
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export DB_HOSTNAME='localhost'
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```
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Note: Saving credentials in environment variables is convenient, but not secure - consider a more secure solution such as [Cloud KMS](https://cloud.google.com/kms/) to help keep secrets safe.
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## Running Locally
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To run this application locally, download and install the `cloud_sql_proxy` by following the instructions [here](https://cloud.google.com/sql/docs/sqlserver/sql-proxy#install).
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Once the proxy is ready, use the following command to start the proxy in the background:
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```bash
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$ ./cloud_sql_proxy -dir=/cloudsql \
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--instances=$CLOUD_SQL_CONNECTION_NAME=tcp:1433 \
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--credential_file=$GOOGLE_APPLICATION_CREDENTIALS
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```
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Note: Make sure to run the command under a user with write access in the `/cloudsql` directory. This proxy will use this folder to create a unix socket the application will use to connect to Cloud SQL.
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Execute the following:
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```bash
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$ php -S localhost:8080
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```
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Navigate towards http://localhost:8080 to verify your application is running correctly.
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## Google App Engine Standard
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To run on GAE-Standard, create an App Engine project by following the setup for these [instructions](https://cloud.google.com/appengine/docs/standard/php7/quickstart#before-you-begin).
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First, update `app.yaml` with the correct values to pass the environment variables into the runtime.
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Next, the following command will deploy the application to your Google Cloud project:
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```bash
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$ gcloud app deploy
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```

‎cloud_sql/sqlserver/pdo/app.yaml‎

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# Copyright 2020 Google LLC
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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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runtime: php72
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# Remember - storing secrets in plaintext is potentially unsafe. Consider using
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# something like https://cloud.google.com/kms/ to help keep secrets secret.
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env_variables:
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CLOUD_SQL_CONNECTION_NAME: <MY-PROJECT>:<INSTANCE-REGION>:<MY-DATABASE>
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DB_USER: my-db-user
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DB_PASS: my-db-pass
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DB_NAME: my_db
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# Defaults to "serve index.php" and "serve public/index.php". Can be used to
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# serve a custom PHP front controller (e.g. "serve backend/index.php") or to
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# run a long-running PHP script as a worker process (e.g. "php worker.php").
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#
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# entrypoint: serve index.php

‎cloud_sql/sqlserver/pdo/index.php‎

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<?php
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/*
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* Copyright 2020 Google LLC.
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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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*/
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require_once 'src/DB.php';
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require_once 'src/Votes.php';
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use Google\Cloud\Samples\CloudSQL\SQLServer\DB;
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use Google\Cloud\Samples\CloudSQL\SQLServer\Votes;
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$votes = new Votes(DB::createPdoConnection());
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if ($_SERVER['REQUEST_URI'] == '/' && $_SERVER['REQUEST_METHOD'] == 'GET') {
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$list = $votes->list();
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$vote_count = $votes->count_candidates();
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$tab_count = $vote_count['tabs'];
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$space_count = $vote_count['spaces'];
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include_once("./template.php");
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} elseif ($_SERVER['REQUEST_URI'] == '/' && $_SERVER['REQUEST_METHOD'] == 'POST') {
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$message = 'Invalid vote. Choose Between TABS and SPACES';
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if (!empty($_POST['team']) && in_array($_POST['team'], ['SPACES', 'TABS'])) {
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$message = $votes->save($_POST['team']);
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}
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echo $message;
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}

‎cloud_sql/sqlserver/pdo/src/DB.php‎

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<?php
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/*
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* Copyright 2020 Google LLC.
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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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*/
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namespace Google\Cloud\Samples\CloudSQL\SQLServer;
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use PDO;
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class DB
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{
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public static function createPdoConnection()
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{
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$username = getenv("DB_USER");
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$password = getenv("DB_PASS");
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$schema = getenv("DB_NAME");
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$hostname = getenv("DB_HOSTNAME") ?: "(local)";
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# [START cloud_sql_sqlserver_pdo_create]
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// $username = 'your_db_user';
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// $password = 'yoursupersecretpassword';
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// $schema = 'your_db_name';
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$dsn = sprintf('sqlsrv:server=(local);Database=%s', $schema, $hostname);
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return new PDO($dsn, $username, $password);
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# [END cloud_sql_sqlserver_pdo_create]
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}
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}

‎cloud_sql/sqlserver/pdo/src/Votes.php‎

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<?php
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/*
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* Copyright 2020 Google LLC.
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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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*/
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namespace Google\Cloud\Samples\CloudSQL\SQLServer;
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use PDO;
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class Votes
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{
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private $connection;
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public function __construct(PDO $connection)
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{
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$this->connection = $connection;
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$this->create_table();
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}
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private function create_table()
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{
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$tableName = "votes";
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$existsStmt = "SELECT * FROM INFORMATION_SCHEMA.TABLES
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WHERE TABLE_NAME = ?";
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$stmt = $this->connection->prepare($existsStmt);
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$stmt->execute([$tableName]);
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// If table does not exist, create it!
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$row = $stmt->fetch(PDO::FETCH_ASSOC);
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if (!$row) {
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$sql = "
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CREATE TABLE votes (
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vote_id INT NOT NULL IDENTITY,
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time_cast DATETIME NOT NULL,
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candidate VARCHAR(6) NOT NULL,
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PRIMARY KEY (vote_id)
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);";
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if ($this->connection->exec($sql) !== 1) {
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print_r($this->connection->errorInfo());
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exit;
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}
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}
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}
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public function list()
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{
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$sql = "SELECT TOP 5 candidate, time_cast FROM votes ORDER BY time_cast DESC";
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$statement = $this->connection->prepare($sql);
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$statement->execute();
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return $statement->fetchAll();
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}
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public function count_candidates()
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{
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$sql = "SELECT COUNT(vote_id) as voteCount FROM votes WHERE candidate = ?";
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$count = [];
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$statement = $this->connection->prepare($sql);
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//tabs
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$statement->execute(['TABS']);
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$count['tabs'] = $statement->fetch()[0];
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//spaces
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$statement->execute(['SPACES']);
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$count['spaces'] = $statement->fetch()[0];
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return $count;
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}
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public function save($team)
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{
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$sql = "INSERT INTO votes (time_cast, candidate) VALUES (GETDATE(), :candidate)";
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$statement = $this->connection->prepare($sql);
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$statement->bindParam('candidate', $team);
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if ($statement->execute()) {
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return "Vote successfully cast for '$team'";
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}
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return print_r($statement->errorInfo(), true);
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}
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}

‎cloud_sql/sqlserver/pdo/template.php‎

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<!--
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Copyright 2020 Google LLC
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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-->
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<html lang="en">
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<head>
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<title>Tabs VS Spaces</title>
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<link rel="stylesheet"
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href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">
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<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
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<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
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</head>
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<body>
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<nav class="red lighten-1">
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<div class="nav-wrapper">
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<a href="#" class="brand-logo center">Tabs VS Spaces</a>
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</div>
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</nav>
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<div class="section">
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<div class="center">
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<h4>
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<?php if ($tab_count == $space_count): ?>
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TABS and SPACES are evenly matched!
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<?php elseif ($tab_count > $space_count): ?>
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TABS are winning by <?=$tab_count - $space_count?>
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<?= $tab_count - $space_count > 1 ? "votes" : "vote" ?>!
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<?php elseif ($space_count > $tab_count): ?>
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SPACES are winning by <?=$space_count - $tab_count?>
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<?= $space_count - $tab_count > 1 ? "votes" : "vote" ?>!
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<?php endif ?>
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</h4>
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</div>
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<div class="row center">
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<div class="col s6 m5 offset-m1">
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<div class="card-panel <?= $tab_count > $space_count ?: 'green lighten-3' ?>">
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<i class="material-icons large">keyboard_tab</i>
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<h3><?=$tab_count?> votes</h3>
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<button id="voteTabs" class="btn green">Vote for TABS</button>
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</div>
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</div>
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<div class="col s6 m5">
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<div class="card-panel <?= $tab_count < $space_count ?: 'blue lighten-3' ?>">
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<i class="material-icons large">space_bar</i>
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<h3><?=$space_count?> votes</h3>
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<button id="voteSpaces" class="btn blue">Vote for SPACES</button>
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</div>
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</div>
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</div>
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<h4 class="header center">Recent Votes</h4>
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<ul class="container collection center">
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<?php foreach ($list as $vote): ?>
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<li class="collection-item avatar">
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<?php if ($vote['candidate'] == "TABS"): ?>
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<i class="material-icons circle green">keyboard_tab</i>
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<?php elseif ($vote['candidate'] == "SPACES"): ?>
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<i class="material-icons circle blue">space_bar</i>
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<?php endif ?>
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<span class="title">
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A vote for <b><?= $vote['candidate'] ?></b>
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</span>
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<p>was cast at <?= $vote['time_cast'] ?></p>
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</li>
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<?php endforeach ?>
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</ul>
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</div>
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<script>
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function vote(team) {
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var xhr = new XMLHttpRequest();
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xhr.onreadystatechange = function () {
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if (this.readyState == 4) {
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if (!window.alert(this.responseText)) {
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window.location.reload();
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}
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}
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};
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xhr.open("POST", "/", true);
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xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
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xhr.send("team=" + team);
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}
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document.getElementById("voteTabs").addEventListener("click", function () {
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vote("TABS");
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});
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document.getElementById("voteSpaces").addEventListener("click", function () {
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vote("SPACES");
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});
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</script>
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</body>
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</html>

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