ArangoDBは、非常に優れた機能と多くの優れたドキュメントを備えた柔軟なマルチモデルデータベースサーバです。これは若い、非常に有望なオープンソースプロジェクトであり、コミュニティが成長していますが、実際の例はあまりありません。ArangoDBでPHPでユーザ登録と認証を行うには？
実際の一般的な例は、ユーザー登録と認証です。そこのほとんどのアプリケーションで必要です。
したがって、ArangoDBを使用してPHPでユーザー登録と認証を行う方法はありますか？
次のサンプルコードを直接実行することができ、架空のユーザーデータを提供することによってユーザーの登録と認証を実行します。
それぞれのステップが表示されます。コレクション作成からユーザー登録、認証まで、最後にコレクションを再度クリーンアップします。
理解しやすくするために、何が行われているのかを説明するコメントもたくさんあります。
このコードをファイルに入れるだけで、環境に応じてautoload.phpへのパスを設定し、ブラウザのリンクにアクセスしてください。 このコードでは、ArangoDB 1.2 and upとArangoDB-PHP client version 1.2以降が必要です。このスクリプトは、自動的に「ユーザー」コレクションと「ユーザ名」に関する独自のスキップ・リストのインデックスを作成します。
それはArangoDBは、ローカルホスト上で稼働し、ポート8529.に
注1を聴くことを期待しています。また、最後にコレクションをドロップします。
コレクションを自動的にではなく手作業で作成する場合は、コレクションとインデックスが作成される部分、およびコレクションがドロップされる部分をコメント化する必要があります。それがArangoDBへのシェル（arangosh）を開き、その中で以下のコマンドを実行した後
：注2
arangosh> db.users.drop();
：
arangosh> db._createDocumentCollection('users');
arangosh> db.users.ensureUniqueSkiplist("username");
あなたがコレクション、型を削除したい場合：私は意図的に、オブジェクトオブジェクト、アドレスオブジェクトなどのオブジェクト指向のスタイルをより多く導入することを避けました。単純にするためです。
最後に、ここにスクリプトがあります。
<?php
namespace triagens\ArangoDb;
// use this and change it to the path to autoload.php of the arangodb-php client if you're using the client standalone...
// require __DIR__ . '/../vendor/triagens/ArangoDb/autoload.php';
// ...or use this and change it to the path to autoload.php in the vendor directory if you're using Composer/Packagist
require __DIR__ . '/../vendor/autoload.php';
// This function will provide us with our pre-configured connection options.
function getConnectionOptions()
{
$traceFunc = function ($type, $data) {
print "TRACE FOR " . $type . PHP_EOL;
};
return array(
ConnectionOptions::OPTION_ENDPOINT => 'tcp://localhost:8529/',
// endpoint to connect to
ConnectionOptions::OPTION_CONNECTION => 'Close',
// can use either 'Close' (one-time connections) or 'Keep-Alive' (re-used connections)
ConnectionOptions::OPTION_AUTH_TYPE => 'Basic',
// use basic authorization
/*
ConnectionOptions::OPTION_AUTH_USER => '', // user for basic authorization
ConnectionOptions::OPTION_AUTH_PASSWD => '', // password for basic authorization
ConnectionOptions::OPTION_PORT => 8529, // port to connect to (deprecated, should use endpoint instead)
ConnectionOptions::OPTION_HOST => "localhost", // host to connect to (deprecated, should use endpoint instead)
*/
ConnectionOptions::OPTION_TIMEOUT => 5,
// timeout in seconds
//ConnectionOptions::OPTION_TRACE => $traceFunc, // tracer function, can be used for debugging
ConnectionOptions::OPTION_CREATE => false,
// do not create unknown collections automatically
ConnectionOptions::OPTION_UPDATE_POLICY => UpdatePolicy::LAST,
// last update wins
);
}
// This function tries to persist the user data into the database upon registration
// it will fail if a user with the same username already exists.
function register($connection, $username, $password, $registrationData)
{
// This would be where you call the function that encrypts your password like you did for storage earlier
$hashedPassword = md5($password);
// assign the collection to a var (or type it directly into the methods parameters)
$collectionId = 'users';
//create an example document or an array in order to pass to the following byExample method
$document = Document::createFromArray(
array('username' => $username, 'password' => $hashedPassword, 'data' => $registrationData)
);
// Get an instance of the collection handler
$documentHandler = new DocumentHandler($connection);
try {
// query the given $collectionId by example using the previously declared $exampleDocument array
$result = $documentHandler->add($collectionId, $document);
// return the result;
return $result;
} catch (Exception $e) {
if ($e->getCode()) {
echo ('User already exists... ');
} else {
// any other error
echo ('An error occured. Exception: ' . $e);
}
}
}
// This function tries to authenticate the user and will return an array with its data
function authenticate($connection, $username, $password)
{
// This would be where you call the function that encrypts your password like you did for storage earlier
$hashedPassword = md5($password);
// assign the collection to a var (or type it directly into the methods parameters)
$collectionId = 'users';
//create an example document or an array in order to pass to the following byExample method
$exampleDocumentArray = array('username' => $username, 'password' => $hashedPassword);
// Get an instance of the collection handler
$documentHandler = new CollectionHandler($connection);
try {
// query the given $collectionId by example using the previously declared $exampleDocument array
$cursor = $documentHandler->byExample($collectionId, $exampleDocumentArray);
// check if the count of the cursor is one or not.
if ($cursor->getCount() == 1) {
// do some fancy login stuff here...
// get the current document from the cursor
$userDocument = $cursor->current();
// set session uid to the document key that was set automatically by ArangoDB,
// since we didn't provide our own on registration
$_SESSION['uid'] = $userDocument->getKey();
// extract and return the document in form of an array
return $userDocument->getAll();
} else {
return false;
}
} catch (Exception $e) {
echo ('An error occured. Exception: ' . $e . '<br>');
}
}
// register the connection to ArangoDB
$connection = new Connection(getConnectionOptions());
// register a collection handler to work with the 'users' collection
$collectionHandler = new CollectionHandler($connection);
// create the 'users' collection...
// remark those lines if you want to create the collection by hand.
echo "creating 'users' collection...";
try {
$collection = new Collection();
$collection->setName('users');
$collectionHandler->create($collection);
echo "created.<br>";
} catch (Exception $e) {
echo ('Could not create collection. Exception: ' . $e . '<br>');
}
// create unique skip list index in 'users' collection on field ''username'...
// remark those lines if you want to create the index by hand.
echo "creating unique skip list index in 'users' collection on field ''username'... ";
try {
$collection = new Collection();
$collection->setName('users');
$collectionHandler->index('users', 'skiplist', array('username'), true);
echo "created.<br>";
} catch (Exception $e) {
echo ('Could not create skip list index. Exception: ' . $e . '<br>');
}
// let's assume those variables hold your username/password
$userNameProvided = 'jane';
$passwordProvided = 'mysecretpassword';
// here we pass some structured registration data
$registrationData = array(
'name' => 'Jane',
'surname' => 'Doe',
'addresses' => array(
'email' => array('[email protected]', '[email protected]'),
'home' => array(
array('street' => 'Brooklyn Ave.', 'number' => 10),
array('street' => '54th Street', 'number' => 340, 'is_primary' => true)
)
)
);
// First register
echo "trying to register user for the first time... ";
$result = register($connection, $userNameProvided, $passwordProvided, $registrationData);
if ($result) {
echo " " . $userNameProvided . " registered<br>";
} else {
echo "failed<br>";
}
// Trying to register user with same username a second time
echo "trying to register user with same username a second time... ";
$result = register($connection, $userNameProvided, $passwordProvided, $registrationData);
if ($result) {
echo "registered<br>";
} else {
echo "failed<br>";
}
// now authenticate with the correct username/password combination
echo "trying to authenticate with the correct username/password combination... ";
if ($userArray = authenticate($connection, $userNameProvided, $passwordProvided)) {
echo "login successful. ";
echo '<br>';
// do some fancy after-login stuff here...
echo "<br>Welcome back " . $userArray['username'] . '!<br>';
if (count($userArray['data']['addresses']['email']) > 0) {
echo "Your primary mail address is " . $userArray['data']['addresses']['email'][0] . '<br>';
}
foreach ($userArray['data']['addresses']['home'] as $key => $value) {
if (array_key_exists('is_primary', $value)) {
$homeAddress = $userArray['data']['addresses']['home'][$key];
echo "Your primary home address is " . $homeAddress['number'] . ', ' . $homeAddress['street'] . '<br>';
// if found, break out of the loop. There can be only one... primary address!
break;
}
}
} else {
// re-display login form. +1 the wrong-login counter...
echo "wrong username or password<br>";
}
echo '<br>';
// now authenticate with the wrong username/password combination
echo "trying to authenticate with the wrong username/password combination... ";
if (authenticate($connection, $userNameProvided, 'I am a wrong password')) {
// do some fancy after-login stuff here...
echo "login successful<br>";
} else {
// re-display login form. +1 the wrong-login counter...
echo "wrong username or password<br>";
}
// truncate the collection... not needed if dropping, but only here to empty the collection of its tests
// in case you decide to not create and drop the collection through this script, but by hand.
echo "truncating collection...";
try {
$collectionHandler->truncate('users');
echo "truncated.<br>";
} catch (Exception $e) {
die ('Could not truncate collection. Exception: ' . $e . '<br>');
}
// finally drop the collection...
// remark those lines if you want to drop the collection by hand.
echo "dropping collection...";
try {
$collectionHandler->drop('users');
echo "dropped.<br>";
} catch (Exception $e) {
die ('Could not drop collection. Exception: ' . $e . '<br>');
}