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