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<?php
namespace LookupServer;
use GuzzleHttp\Client;
use Slim\Http\Request;
use Slim\Http\Response;
class Replication {
/** @var \PDO */
private $db;
/** @var string */
private $auth;
/** @var string[] */
private $replicationHosts;
public function __construct(\PDO $db, $auth, $replicationHosts) {
$this->db = $db;
$this->auth = $auth;
$this->replicationHosts = $replicationHosts;
}
public function export(Request $request, Response $response) {
$userInfo = $request->getUri()->getUserInfo();
$userInfo = explode(':', $userInfo, 2);
if (count($userInfo) !== 2 || $userInfo[0] !== 'lookup' || $userInfo[1] !== $this->auth) {
$response = $response->withStatus(401);
return $response;
}
$params = $request->getQueryParams();
if (!isset($params['timestamp'], $params['page']) || !ctype_digit($params['timestamp']) ||
!ctype_digit($params['page'])) {
$response = $response->withStatus(400);
return $response;
}
$timestamp = (int)$params['timestamp'];
$page = (int)$params['page'];
$stmt = $this->db->prepare('SELECT id, federationId, UNIX_TIMESTAMP(timestamp) AS timestamp
FROM users
WHERE UNIX_TIMESTAMP(timestamp) >= :timestamp
ORDER BY timestamp, id
LIMIT :limit
OFFSET :offset');
$stmt->bindParam('timestamp', $timestamp);
$stmt->bindValue('limit', 100, \PDO::PARAM_INT);
$stmt->bindValue('offset', 100 * $page, \PDO::PARAM_INT);
$stmt->execute();
$result = [];
while($data = $stmt->fetch()) {
$user = [
'cloudId' => $data['federationId'],
'timestamp' => (int)$data['timestamp'],
'data' => [],
];
$stmt2 = $this->db->prepare('SELECT *
FROM store
WHERE userId = :uid');
$stmt2->bindValue('uid', $data['id']);
$stmt2->execute();
while($userData = $stmt2->fetch()) {
$user['data'][] = [
'key' => $userData['k'],
'value' => $userData['v'],
'validated' => (int)$userData['valid'],
];
}
$stmt2->closeCursor();
$result[] = $user;
}
$response->getBody()->write(json_encode($result));
return $response;
}
public function import(Request $request, Response $response) {
$replicationStatus = [];
if (file_exists(__DIR__ . '/../config/replication.json')) {
$replicationStatus = json_decode(file_get_contents(__DIR__ . '/../config/replication.json'), true);
}
foreach ($this->replicationHosts as $replicationHost) {
$timestamp = 0;
if (isset($replicationStatus[$replicationHost])) {
$timestamp = $replicationStatus[$replicationHost];
}
$page = 0;
while(true) {
// Retrieve public key && store
$req = new \GuzzleHttp\Psr7\Request('GET', $replicationHost . '?timestamp=' . $timestamp . '&page=' . $page);
$client = new Client();
$resp = $client->send($req, [
'timeout' => 5,
]);
$data = json_decode($resp->getBody(), true);
if (count($data) === 0) {
break;
}
foreach ($data as $user) {
$this->parseUser($user);
$replicationStatus[$replicationHost] = $user['timestamp'];
}
$page++;
}
file_put_contents(__DIR__. '/../config/replication.json', json_encode($replicationStatus, JSON_PRETTY_PRINT));
}
return $response;
}
private function parseUser($user) {
$stmt = $this->db->prepare('SELECT id, UNIX_TIMESTAMP(timestamp) AS timestamp
FROM users
WHERE federationId = :id');
$stmt->bindParam('id', $user['cloudId']);
$stmt->execute();
// New
if ($stmt->rowCount() === 1) {
$data = $stmt->fetch();
if ($data['timestamp'] > $user['timestamp']) {
$stmt->closeCursor();
return;
}
$stmt2 = $this->db->prepare('DELETE FROM users
WHERE federationId = :id');
$stmt2->bindParam('id', $user['cloudId']);
$stmt2->execute();
$stmt2->closeCursor();
}
$stmt->closeCursor();
$stmt = $this->db->prepare('INSERT INTO users (federationId, timestamp) VALUES (:federationId, FROM_UNIXTIME(:timestamp))');
$stmt->bindParam(':federationId', $user['cloudId'], \PDO::PARAM_STR);
$stmt->bindParam(':timestamp', $user['timestamp'], \PDO::PARAM_INT);
$stmt->execute();
$id = $this->db->lastInsertId();
$stmt->closeCursor();
foreach ($user['data'] as $data) {
$stmt = $this->db->prepare('INSERT INTO store (userId, k, v, valid) VALUES (:userId, :k, :v, :valid)');
$stmt->bindParam(':userId', $id, \PDO::PARAM_INT);
$stmt->bindParam(':k', $data['key'], \PDO::PARAM_STR);
$stmt->bindParam(':v', $data['value'], \PDO::PARAM_STR);
$stmt->bindParam(':valid', $data['validated'], \PDO::PARAM_INT);
$stmt->execute();
$stmt->closeCursor();
}
}
}
|
