import { IExecuteFunctions } from 'n8n-core'; import { IDataObject, INodeExecutionData, INodeType, INodeTypeDescription, NodeOperationError, } from 'n8n-workflow'; // @ts-ignore import mysql2 from 'mysql2/promise'; import { copyInputItems } from './GenericFunctions'; export class MySql implements INodeType { description: INodeTypeDescription = { displayName: 'MySQL', name: 'mySql', icon: 'file:mysql.svg', group: ['input'], version: 1, description: 'Get, add and update data in MySQL', defaults: { name: 'MySQL', }, inputs: ['main'], outputs: ['main'], credentials: [ { name: 'mySql', required: true, }, ], properties: [ { displayName: 'Operation', name: 'operation', type: 'options', noDataExpression: true, options: [ { name: 'Execute Query', value: 'executeQuery', description: 'Execute an SQL query', action: 'Execute a SQL query', }, { name: 'Insert', value: 'insert', description: 'Insert rows in database', action: 'Insert rows in database', }, { name: 'Update', value: 'update', description: 'Update rows in database', action: 'Update rows in database', }, ], default: 'insert', }, // ---------------------------------- // executeQuery // ---------------------------------- { displayName: 'Query', name: 'query', type: 'string', typeOptions: { alwaysOpenEditWindow: true, }, displayOptions: { show: { operation: ['executeQuery'], }, }, default: '', placeholder: 'SELECT id, name FROM product WHERE id < 40', required: true, description: 'The SQL query to execute', }, // ---------------------------------- // insert // ---------------------------------- { displayName: 'Table', name: 'table', type: 'string', displayOptions: { show: { operation: ['insert'], }, }, default: '', required: true, description: 'Name of the table in which to insert data to', }, { displayName: 'Columns', name: 'columns', type: 'string', displayOptions: { show: { operation: ['insert'], }, }, default: '', placeholder: 'id,name,description', description: 'Comma-separated list of the properties which should used as columns for the new rows', }, { displayName: 'Options', name: 'options', type: 'collection', displayOptions: { show: { operation: ['insert'], }, }, default: {}, placeholder: 'Add modifiers', description: 'Modifiers for INSERT statement', options: [ { displayName: 'Ignore', name: 'ignore', type: 'boolean', default: true, description: 'Whether to ignore any ignorable errors that occur while executing the INSERT statement', }, { displayName: 'Priority', name: 'priority', type: 'options', options: [ { name: 'Low Prioirity', value: 'LOW_PRIORITY', description: 'Delays execution of the INSERT until no other clients are reading from the table', }, { name: 'High Priority', value: 'HIGH_PRIORITY', description: 'Overrides the effect of the --low-priority-updates option if the server was started with that option. It also causes concurrent inserts not to be used.', }, ], default: 'LOW_PRIORITY', description: 'Ignore any ignorable errors that occur while executing the INSERT statement', }, ], }, // ---------------------------------- // update // ---------------------------------- { displayName: 'Table', name: 'table', type: 'string', displayOptions: { show: { operation: ['update'], }, }, default: '', required: true, description: 'Name of the table in which to update data in', }, { displayName: 'Update Key', name: 'updateKey', type: 'string', displayOptions: { show: { operation: ['update'], }, }, default: 'id', required: true, // eslint-disable-next-line n8n-nodes-base/node-param-description-miscased-id description: 'Name of the property which decides which rows in the database should be updated. Normally that would be "id".', }, { displayName: 'Columns', name: 'columns', type: 'string', displayOptions: { show: { operation: ['update'], }, }, default: '', placeholder: 'name,description', description: 'Comma-separated list of the properties which should used as columns for rows to update', }, ], }; async execute(this: IExecuteFunctions): Promise { const credentials = await this.getCredentials('mySql'); // Destructuring SSL configuration const { ssl, caCertificate, clientCertificate, clientPrivateKey, ...baseCredentials } = credentials; if (ssl) { baseCredentials.ssl = {}; if (caCertificate) { baseCredentials.ssl.ca = caCertificate; } // client certificates might not be required if (clientCertificate || clientPrivateKey) { baseCredentials.ssl.cert = clientCertificate; baseCredentials.ssl.key = clientPrivateKey; } } const connection = await mysql2.createConnection(baseCredentials); const items = this.getInputData(); const operation = this.getNodeParameter('operation', 0) as string; let returnItems: INodeExecutionData[] = []; if (operation === 'executeQuery') { // ---------------------------------- // executeQuery // ---------------------------------- try { const queryQueue = items.map((item, index) => { const rawQuery = this.getNodeParameter('query', index) as string; return connection.query(rawQuery); }); returnItems = (await Promise.all(queryQueue) as mysql2.OkPacket[][]).reduce((collection, result, index) => { const [rows] = result; const executionData = this.helpers.constructExecutionMetaData( this.helpers.returnJsonArray(rows as unknown as IDataObject[]), { itemData: { item: index } }, ); collection.push(...executionData); return collection; }, [] as INodeExecutionData[]); } catch (error) { if (this.continueOnFail()) { returnItems = this.helpers.returnJsonArray({ error: error.message }); } else { await connection.end(); throw error; } } } else if (operation === 'insert') { // ---------------------------------- // insert // ---------------------------------- try { const table = this.getNodeParameter('table', 0) as string; const columnString = this.getNodeParameter('columns', 0) as string; const columns = columnString.split(',').map((column) => column.trim()); const insertItems = copyInputItems(items, columns); const insertPlaceholder = `(${columns.map((column) => '?').join(',')})`; const options = this.getNodeParameter('options', 0) as IDataObject; const insertIgnore = options.ignore as boolean; const insertPriority = options.priority as string; const insertSQL = `INSERT ${insertPriority || ''} ${ insertIgnore ? 'IGNORE' : '' } INTO ${table}(${columnString}) VALUES ${items .map((item) => insertPlaceholder) .join(',')};`; const queryItems = insertItems.reduce( (collection, item) => collection.concat(Object.values(item as any)), // tslint:disable-line:no-any [], ); const queryResult = await connection.query(insertSQL, queryItems); returnItems = this.helpers.returnJsonArray(queryResult[0] as unknown as IDataObject); } catch (error) { if (this.continueOnFail()) { returnItems = this.helpers.returnJsonArray({ error: error.message }); } else { await connection.end(); throw error; } } } else if (operation === 'update') { // ---------------------------------- // update // ---------------------------------- try { const table = this.getNodeParameter('table', 0) as string; const updateKey = this.getNodeParameter('updateKey', 0) as string; const columnString = this.getNodeParameter('columns', 0) as string; const columns = columnString.split(',').map((column) => column.trim()); if (!columns.includes(updateKey)) { columns.unshift(updateKey); } const updateItems = copyInputItems(items, columns); const updateSQL = `UPDATE ${table} SET ${columns .map((column) => `${column} = ?`) .join(',')} WHERE ${updateKey} = ?;`; const queryQueue = updateItems.map((item) => connection.query(updateSQL, Object.values(item).concat(item[updateKey])), ); const queryResult = await Promise.all(queryQueue); returnItems = this.helpers.returnJsonArray( queryResult.map((result) => result[0]) as unknown as IDataObject[], ); } catch (error) { if (this.continueOnFail()) { returnItems = this.helpers.returnJsonArray({ error: error.message }); } else { await connection.end(); throw error; } } } else { if (this.continueOnFail()) { returnItems = this.helpers.returnJsonArray({ error: `The operation "${operation}" is not supported!`, }); } else { await connection.end(); throw new NodeOperationError( this.getNode(), `The operation "${operation}" is not supported!`, ); } } await connection.end(); return this.prepareOutputData(returnItems); } }