backend - using engine driver from plugin

packages/api/src/utility/requireEngineDriver.js

@@ -0,0 +1,24 @@
+const _ = require('lodash');
+const requirePlugin = require('../shell/requirePlugin');
+
+
+/** @returns {import('dbgate-types').EngineDriver} */
+function requireEngineDriver(connection) {
+  let engine = null;
+  if (_.isString(connection)) {
+    engine = connection;
+  } else if (_.isPlainObject(connection)) {
+    engine = connection.engine;
+  }
+  if (!engine) {
+    throw new Error('Could not get driver from connection');
+  }
+  if (engine.includes('@')) {
+    const [shortName, packageName] = engine.split('@');
+    const plugin = requirePlugin(packageName);
+    return plugin.driver;
+  }
+  throw new Error(`Could not found engine driver ${engine}`);
+}
+
+module.exports = requireEngineDriver;