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398 lines
9.4 KiB
TypeScript
398 lines
9.4 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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} from 'n8n-workflow';
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import { chunk, flatten } from '../../utils/utilities';
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import * as mssql from 'mssql';
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import { ITables } from './TableInterface';
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import {
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copyInputItem,
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createTableStruct,
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executeQueryQueue,
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extractDeleteValues,
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extractUpdateCondition,
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extractUpdateSet,
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extractValues,
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} from './GenericFunctions';
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export class MicrosoftSql implements INodeType {
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description: INodeTypeDescription = {
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displayName: 'Microsoft SQL',
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name: 'microsoftSql',
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icon: 'file:mssql.png',
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group: ['input'],
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version: 1,
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description: 'Gets, add and update data in Microsoft SQL.',
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defaults: {
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name: 'Microsoft SQL',
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color: '#1d4bab',
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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: 'microsoftSql',
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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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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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},
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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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},
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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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},
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{
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name: 'Delete',
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value: 'delete',
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description: 'Delete rows in database',
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},
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],
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default: 'insert',
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description: 'The operation to perform.',
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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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rows: 5,
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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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// 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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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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// delete
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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: ['delete'],
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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 delete data.',
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},
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{
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displayName: 'Delete Key',
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name: 'deleteKey',
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type: 'string',
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displayOptions: {
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show: {
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operation: ['delete'],
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},
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},
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default: 'id',
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required: true,
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description:
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'Name of the property which decides which rows in the database should be deleted. Normally that would be "id".',
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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 = this.getCredentials('microsoftSql');
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if (credentials === undefined) {
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throw new Error('No credentials got returned!');
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}
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const config = {
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server: credentials.server as string,
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port: credentials.port as number,
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database: credentials.database as string,
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user: credentials.user as string,
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password: credentials.password as string,
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domain: credentials.domain ? (credentials.domain as string) : undefined,
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options: {
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encrypt: credentials.tls as boolean,
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},
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};
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const pool = new mssql.ConnectionPool(config);
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await pool.connect();
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let returnItems = [];
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const items = this.getInputData();
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const operation = this.getNodeParameter('operation', 0) as string;
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try {
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if (operation === 'executeQuery') {
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// ----------------------------------
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// executeQuery
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// ----------------------------------
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const rawQuery = this.getNodeParameter('query', 0) as string;
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const queryResult = await pool.request().query(rawQuery);
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const result =
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queryResult.recordsets.length > 1
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? flatten(queryResult.recordsets)
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: queryResult.recordsets[0];
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returnItems = this.helpers.returnJsonArray(result as IDataObject[]);
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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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const tables = createTableStruct(this.getNodeParameter, items);
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await executeQueryQueue(
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tables,
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({
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table,
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columnString,
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items,
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}: {
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table: string;
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columnString: string;
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items: IDataObject[];
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}): Array<Promise<object>> => {
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return chunk(items, 1000).map(insertValues => {
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const values = insertValues
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.map((item: IDataObject) => extractValues(item))
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.join(',');
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return pool
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.request()
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.query(
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`INSERT INTO ${table}(${columnString}) VALUES ${values};`,
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);
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});
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},
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);
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returnItems = items;
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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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const updateKeys = items.map(
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(item, index) => this.getNodeParameter('updateKey', index) as string,
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);
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const tables = createTableStruct(
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this.getNodeParameter,
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items,
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['updateKey'].concat(updateKeys),
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'updateKey',
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);
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await executeQueryQueue(
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tables,
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({
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table,
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columnString,
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items,
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}: {
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table: string;
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columnString: string;
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items: IDataObject[];
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}): Array<Promise<object>> => {
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return items.map(item => {
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const columns = columnString
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.split(',')
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.map(column => column.trim());
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const setValues = extractUpdateSet(item, columns);
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const condition = extractUpdateCondition(
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item,
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item.updateKey as string,
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);
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return pool
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.request()
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.query(`UPDATE ${table} SET ${setValues} WHERE ${condition};`);
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});
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},
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);
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returnItems = items;
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} else if (operation === 'delete') {
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// ----------------------------------
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// delete
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// ----------------------------------
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const tables = items.reduce((tables, item, index) => {
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const table = this.getNodeParameter('table', index) as string;
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const deleteKey = this.getNodeParameter('deleteKey', index) as string;
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if (tables[table] === undefined) {
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tables[table] = {};
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}
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if (tables[table][deleteKey] === undefined) {
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tables[table][deleteKey] = [];
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}
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tables[table][deleteKey].push(item);
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return tables;
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}, {} as ITables);
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const queriesResults = await Promise.all(
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Object.keys(tables).map(table => {
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const deleteKeyResults = Object.keys(tables[table]).map(
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deleteKey => {
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const deleteItemsList = chunk(
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tables[table][deleteKey].map(item =>
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copyInputItem(item as INodeExecutionData, [deleteKey]),
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),
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1000,
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);
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const queryQueue = deleteItemsList.map(deleteValues => {
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return pool
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.request()
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.query(
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`DELETE FROM ${table} WHERE ${deleteKey} IN ${extractDeleteValues(
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deleteValues,
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deleteKey,
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)};`,
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);
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});
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return Promise.all(queryQueue);
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},
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);
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return Promise.all(deleteKeyResults);
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}),
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);
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const rowsDeleted = flatten(queriesResults).reduce(
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(acc: number, resp: mssql.IResult<object>): number =>
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(acc += resp.rowsAffected.reduce((sum, val) => (sum += val))),
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0,
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);
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returnItems = this.helpers.returnJsonArray({
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rowsDeleted,
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} as IDataObject);
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} else {
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await pool.close();
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throw new Error(`The operation "${operation}" is not supported!`);
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}
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} catch (err) {
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if (this.continueOnFail() === true) {
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returnItems = items;
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} else {
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await pool.close();
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throw err;
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}
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}
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// Close the connection
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await pool.close();
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return this.prepareOutputData(returnItems);
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}
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}
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