Optimized connection to db

app/common/Service/Connector.php

@@ -0,0 +1,41 @@
+<?php
+namespace ProVM\Service;
+
+use PDO;
+use PDOException;
+use Psr\Log\LoggerInterface;
+
+class Connector
+{
+    public function __construct(protected string $host, protected string $name, protected string $username, protected string $password, protected string $retries, protected LoggerInterface $logger) {}
+
+    protected PDO $connection;
+
+    /**
+     * @throws PDOException
+     */
+    public function connect(): PDO
+    {
+        if (!isset($this->connection)) {
+            $this->logger->debug('Connecting');
+            $r = 0;
+            $exception = null;
+            while($r < $this->retries) {
+                try {
+                    $dsn = "mysql:host={$this->host};dbname={$this->name}";
+                    $this->connection = new PDO($dsn, $this->username, $this->password);
+                    return $this->connection;
+                } catch (PDOException $e) {
+                    $this->logger->debug('Retrying');
+                    if ($exception !== null) {
+                        $e = new PDOException($e->getMessage(), $e->getCode(), $exception);
+                    }
+                    $exception = $e;
+                }
+                $r ++;
+            }
+            throw $exception;
+        }
+        return $this->connection;
+    }
+}