✨ Add Snowflake Node (#1230)

packages/nodes-base/nodes/Snowflake/Snowflake.node.ts

@@ -0,0 +1,244 @@
+import {
+	IExecuteFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+	INodeExecutionData,
+	INodeType,
+	INodeTypeDescription,
+} from 'n8n-workflow';
+
+import {
+	connect,
+	copyInputItems,
+	destroy,
+	execute,
+} from './GenericFunctions';
+
+import * as snowflake from 'snowflake-sdk';
+
+export class Snowflake implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Snowflake',
+		name: 'snowflake',
+		icon: 'file:snowflake.png',
+		group: ['input'],
+		version: 1,
+		description: 'Get, add and update data in Snowflake.',
+		defaults: {
+			name: 'Snowflake',
+			color: '#5ebbeb',
+		},
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: 'snowflake',
+				required: true,
+			},
+		],
+		properties: [
+			{
+				displayName: 'Operation',
+				name: 'operation',
+				type: 'options',
+				options: [
+					{
+						name: 'Execute Query',
+						value: 'executeQuery',
+						description: 'Execute an SQL query.',
+					},
+					{
+						name: 'Insert',
+						value: 'insert',
+						description: 'Insert rows in database.',
+					},
+					{
+						name: 'Update',
+						value: 'update',
+						description: 'Update rows in database.',
+					},
+				],
+				default: 'insert',
+				description: 'The operation to perform.',
+			},
+
+			// ----------------------------------
+			//         executeQuery
+			// ----------------------------------
+			{
+				displayName: 'Query',
+				name: 'query',
+				type: 'string',
+				typeOptions: {
+					rows: 5,
+				},
+				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.',
+			},
+
+
+			// ----------------------------------
+			//         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,
+				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<INodeExecutionData[][]> {
+		const credentials = this.getCredentials('snowflake') as unknown as snowflake.ConnectionOptions;
+		const returnData: IDataObject[] = [];
+		let responseData;
+
+		const connection = snowflake.createConnection(credentials);
+
+		await connect(connection);
+
+		const items = this.getInputData();
+		const operation = this.getNodeParameter('operation', 0) as string;
+
+		if (operation === 'executeQuery') {
+			// ----------------------------------
+			//         executeQuery
+			// ----------------------------------
+
+			for (let i = 0; i < items.length; i++) {
+				const query = this.getNodeParameter('query', i) as string;
+				responseData = await execute(connection, query, []);
+				returnData.push.apply(returnData, responseData as IDataObject[]);
+			}
+		}
+
+		if (operation === 'insert') {
+			// ----------------------------------
+			//         insert
+			// ----------------------------------
+
+			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 query = `INSERT INTO ${table}(${columns.join(',')}) VALUES (${columns.map(column => '?').join(',')})`;
+			const data = copyInputItems(items, columns);
+			const binds = data.map((element => Object.values(element)));
+			await execute(connection, query, binds as unknown as snowflake.InsertBinds);
+			returnData.push.apply(returnData, data);
+		}
+
+		if (operation === 'update') {
+			// ----------------------------------
+			//         update
+			// ----------------------------------
+
+			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 query = `UPDATE ${table} SET ${columns.map(column => `${column} = ?`).join(',')} WHERE ${updateKey} = ?;`;
+			const data = copyInputItems(items, columns);
+			const binds = data.map((element => Object.values(element).concat(element[updateKey])));
+			for (let i = 0; i < binds.length; i++) {
+				await execute(connection, query, binds[i] as unknown as snowflake.InsertBinds);
+			}
+			returnData.push.apply(returnData, data);
+		}
+
+		await destroy(connection);
+
+		return [this.helpers.returnJsonArray(returnData)];
+	}
+}