import { ConnectorSchemas, ConnectorQueryResult, ConnectorCountQueryResult, ConnectorTable, ConnectorTablePreviewResult, LoggerService, AuthenticationConfigField, ConnectorInfo } from './types';
export declare abstract class LagoConnector {
    static getName(): string;
    abstract getInfos(): ConnectorInfo;
    abstract getAuthenticationConfig(): string | AuthenticationConfigField[];
    abstract validateConfig(config: Record<string, string | number | boolean>): Promise<void>;
    abstract init(config: Record<string, string | number | boolean>, logger: LoggerService): Promise<void>;
    abstract testConnection(): Promise<{
        success: boolean;
        message?: string;
    }>;
    abstract getSchema(): Promise<ConnectorSchemas>;
    abstract drain(): Promise<void>;
    abstract executeQuery(query: string, limit?: number): Promise<ConnectorQueryResult>;
    abstract countQuery(query: string): Promise<ConnectorCountQueryResult>;
    abstract previewTable(table: ConnectorTable): Promise<ConnectorTablePreviewResult>;
}