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0d9eeea024
* 📘 Set up overload * 🔥 Remove inferrable record assertions * 👕 Fix semicolon * 👕 Fix another semicolon
393 lines
9.8 KiB
TypeScript
393 lines
9.8 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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import {
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generateReturning,
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getItemCopy,
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getItemsCopy,
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pgInsert,
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pgQuery,
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pgUpdate,
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} from '../Postgres/Postgres.node.functions';
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import pgPromise from 'pg-promise';
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export class CrateDb implements INodeType {
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description: INodeTypeDescription = {
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displayName: 'CrateDB',
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name: 'crateDb',
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// eslint-disable-next-line n8n-nodes-base/node-class-description-icon-not-svg
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icon: 'file:cratedb.png',
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group: ['input'],
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version: 1,
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description: 'Add and update data in CrateDB',
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defaults: {
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name: 'CrateDB',
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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: 'crateDb',
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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 quantity > $1 AND price <= $2',
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required: true,
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description:
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'The SQL query to execute. You can use n8n expressions or $1 and $2 in conjunction with query parameters.',
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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: 'Schema',
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name: 'schema',
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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: 'doc',
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required: true,
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description: 'Name of the schema the table belongs to',
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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: 'Schema',
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name: 'schema',
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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: 'doc',
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required: true,
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description: 'Name of the schema the table belongs to',
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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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'Comma-separated list of the properties 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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// insert,update
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// ----------------------------------
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{
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displayName: 'Return Fields',
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name: 'returnFields',
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type: 'string',
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displayOptions: {
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show: {
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operation: ['insert', 'update'],
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},
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},
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default: '*',
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description: 'Comma-separated list of the fields that the operation will return',
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},
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// ----------------------------------
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// additional fields
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// ----------------------------------
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{
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displayName: 'Additional Fields',
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name: 'additionalFields',
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type: 'collection',
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placeholder: 'Add Field',
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default: {},
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options: [
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{
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displayName: 'Mode',
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name: 'mode',
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type: 'options',
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options: [
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{
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name: 'Independently',
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value: 'independently',
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description: 'Execute each query independently',
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},
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{
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name: 'Multiple Queries',
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value: 'multiple',
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description: '<b>Default</b>. Sends multiple queries at once to database.',
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},
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],
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default: 'multiple',
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description:
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'The way queries should be sent to database. Can be used in conjunction with <b>Continue on Fail</b>. See <a href="https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.cratedb/">the docs</a> for more examples.',
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},
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{
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displayName: 'Query Parameters',
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name: 'queryParams',
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type: 'string',
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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: 'quantity,price',
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description:
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'Comma-separated list of properties which should be used as query parameters',
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},
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],
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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('crateDb');
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const pgp = pgPromise();
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const config = {
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host: credentials.host 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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ssl: !['disable', undefined].includes(credentials.ssl as string | undefined),
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sslmode: (credentials.ssl as string) || 'disable',
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};
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const db = pgp(config);
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let returnItems: INodeExecutionData[] = [];
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const items = this.getInputData();
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const operation = this.getNodeParameter('operation', 0) as string;
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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 queryResult = await pgQuery(
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this.getNodeParameter,
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pgp,
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db,
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items,
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this.continueOnFail(),
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);
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returnItems = this.helpers.returnJsonArray(queryResult);
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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 insertData = await pgInsert(
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this.getNodeParameter,
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pgp,
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db,
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items,
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this.continueOnFail(),
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);
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for (let i = 0; i < insertData.length; i++) {
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returnItems.push({
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json: insertData[i],
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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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const additionalFields = this.getNodeParameter('additionalFields', 0);
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const mode = additionalFields.mode ?? ('multiple' as string);
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if (mode === 'independently') {
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const updateItems = await pgUpdate(
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this.getNodeParameter,
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pgp,
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db,
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items,
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this.continueOnFail(),
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);
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returnItems = this.helpers.returnJsonArray(updateItems);
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} else if (mode === 'multiple') {
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// Crate db does not support multiple-update queries
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// Therefore we cannot invoke `pgUpdate` using multiple mode
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// so we have to call multiple updates manually here
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const table = this.getNodeParameter('table', 0) as string;
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const schema = this.getNodeParameter('schema', 0) as string;
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const updateKeys = (this.getNodeParameter('updateKey', 0) as string)
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.split(',')
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.map((column) => column.trim());
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const columns = (this.getNodeParameter('columns', 0) as string)
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.split(',')
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.map((column) => column.trim());
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const queryColumns = columns.slice();
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updateKeys.forEach((updateKey) => {
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if (!queryColumns.includes(updateKey)) {
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columns.unshift(updateKey);
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queryColumns.unshift('?' + updateKey);
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}
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});
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const cs = new pgp.helpers.ColumnSet(queryColumns, { table: { table, schema } });
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const where =
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' WHERE ' +
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updateKeys
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.map((updateKey) => pgp.as.name(updateKey) + ' = ${' + updateKey + '}')
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.join(' AND ');
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// updateKeyValue = item.json[updateKey] as string | number;
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// if (updateKeyValue === undefined) {
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// throw new NodeOperationError(this.getNode(), 'No value found for update key!');
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// }
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const returning = generateReturning(
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pgp,
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this.getNodeParameter('returnFields', 0) as string,
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);
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const queries: string[] = [];
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for (let i = 0; i < items.length; i++) {
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const itemCopy = getItemCopy(items[i], columns);
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queries.push(
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pgp.helpers.update(itemCopy, cs) + pgp.as.format(where, itemCopy) + returning,
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);
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}
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const _updateItems = await db.multi(pgp.helpers.concat(queries));
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returnItems = this.helpers.returnJsonArray(getItemsCopy(items, columns) as IDataObject[]);
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}
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} else {
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await pgp.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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// Close the connection
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await pgp.end();
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return this.prepareOutputData(returnItems);
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}
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}
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