feat(MySQL Node): Overhaul

packages/nodes-base/nodes/MySql/v1/GenericFunctions.ts

@@ -0,0 +1,75 @@
+import type {
+	ICredentialDataDecryptedObject,
+	IDataObject,
+	ILoadOptionsFunctions,
+	INodeExecutionData,
+	INodeListSearchResult,
+} from 'n8n-workflow';
+import { deepCopy } from 'n8n-workflow';
+import mysql2 from 'mysql2/promise';
+
+/**
+ * Returns of copy of the items which only contains the json data and
+ * of that only the define properties
+ *
+ * @param {INodeExecutionData[]} items The items to copy
+ * @param {string[]} properties The properties it should include
+ */
+export function copyInputItems(items: INodeExecutionData[], properties: string[]): IDataObject[] {
+	// Prepare the data to insert and copy it to be returned
+	let newItem: IDataObject;
+	return items.map((item) => {
+		newItem = {};
+		for (const property of properties) {
+			if (item.json[property] === undefined) {
+				newItem[property] = null;
+			} else {
+				newItem[property] = deepCopy(item.json[property]);
+			}
+		}
+		return newItem;
+	});
+}
+
+export async function createConnection(
+	credentials: ICredentialDataDecryptedObject,
+): Promise<mysql2.Connection> {
+	const { ssl, caCertificate, clientCertificate, clientPrivateKey, ...baseCredentials } =
+		credentials;
+
+	if (ssl) {
+		baseCredentials.ssl = {};
+
+		if (caCertificate) {
+			baseCredentials.ssl.ca = caCertificate;
+		}
+
+		if (clientCertificate || clientPrivateKey) {
+			baseCredentials.ssl.cert = clientCertificate;
+			baseCredentials.ssl.key = clientPrivateKey;
+		}
+	}
+
+	return mysql2.createConnection(baseCredentials);
+}
+
+export async function searchTables(
+	this: ILoadOptionsFunctions,
+	query?: string,
+): Promise<INodeListSearchResult> {
+	const credentials = await this.getCredentials('mySql');
+	const connection = await createConnection(credentials);
+	const sql = `
+	SELECT table_name FROM information_schema.tables
+	WHERE table_schema = '${credentials.database}'
+		and table_name like '%${query || ''}%'
+	ORDER BY table_name
+	`;
+	const [rows] = await connection.query(sql);
+	const results = (rows as IDataObject[]).map((r) => ({
+		name: r.TABLE_NAME as string,
+		value: r.TABLE_NAME as string,
+	}));
+	await connection.end();
+	return { results };
+}