Inject logger instead of using a singleton

src/server/server.cpp

@@ -15,17 +15,18 @@ void HttpServer::Execute()
 		}
 		catch (std::runtime_error & e)
 		{
-			Logger::GetInstance().Info("Connection dropped on accept");
+			logger.Info("Connection dropped on accept");
 		}
 	}
 }
 	
-HttpServer::HttpServer()
-	: listeningSocket(ServerConfiguration::GetInstance().GetPort()),
-	connectionOperator(),
+HttpServer::HttpServer(Logger & _logger)
+	: logger(_logger),
+	listeningSocket(ServerConfiguration::GetInstance().GetPort()),
+	connectionOperator(_logger),
 	isOpen(true)
 {
 	std::stringstream ss;
 	ss << "Listening on port " << ServerConfiguration::GetInstance().GetPort();
-	Logger::GetInstance().Info(ss.str());
+	logger.Info(ss.str());
 }