[devices-module] Refresh DB connection (#125)

src/Commands/Connector.php

@@ -345,10 +345,15 @@ private function executeConnector(Style\SymfonyStyle $io, Input\InputInterface $
 			self::DATABASE_REFRESH_INTERVAL,
 			function (): void {
 				$this->eventLoop->futureTick(function (): void {
-					try {
-						$this->database->clear();
-					} catch (Throwable $ex) {
-						throw new Exceptions\Terminate('Failed to refresh database connection', $ex->getCode(), $ex);
+					// Check if ping to DB is possible...
+					if (!$this->database->ping()) {
+						// ...if not, try to reconnect
+						$this->database->reconnect();
+
+						// ...and ping again
+						if (!$this->database->ping()) {
+							throw new Exceptions\Terminate('Connection to database could not be re-established');
+						}
 					}
 				});
 			},

src/Utilities/Database.php

@@ -125,14 +125,12 @@ private function pingAndReconnect(): void
 
 				// ...and ping again
 				if (!$this->database->ping()) {
-					throw new Exceptions\Runtime('Connection to database could not be established');
+					throw new Exceptions\Runtime('Connection to database could not be re-established');
 				}
-
-				$this->database->clear();
 			}
 		} catch (Throwable $ex) {
 			throw new Exceptions\Runtime(
-				'Connection to database could not be reestablished',
+				'Connection to database could not be re-established',
 				$ex->getCode(),
 				$ex,
 			);