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packages/@n8n/nodes-langchain/nodes/memory/MemoryMotorhead/MemoryMotorhead.node.ts

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+import { MotorheadMemory } from '@langchain/community/memory/motorhead_memory';
+import {
+	NodeConnectionTypes,
+	type INodeType,
+	type INodeTypeDescription,
+	type ISupplyDataFunctions,
+	type SupplyData,
+} from 'n8n-workflow';
+
+import { getSessionId } from '@utils/helpers';
+import { logWrapper, getConnectionHintNoticeField } from '@n8n/ai-utilities';
+
+import { expressionSessionKeyProperty, sessionIdOption, sessionKeyProperty } from '../descriptions';
+
+export class MemoryMotorhead implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Motorhead',
+		name: 'memoryMotorhead',
+		icon: 'fa:file-export',
+		iconColor: 'black',
+		hidden: true,
+		group: ['transform'],
+		version: [1, 1.1, 1.2, 1.3],
+		description: 'Use Motorhead Memory',
+		defaults: {
+			name: 'Motorhead',
+		},
+		codex: {
+			categories: ['AI'],
+			subcategories: {
+				AI: ['Memory'],
+				Memory: ['Other memories'],
+			},
+			resources: {
+				primaryDocumentation: [
+					{
+						url: 'https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.memorymotorhead/',
+					},
+				],
+			},
+		},
+
+		inputs: [],
+
+		outputs: [NodeConnectionTypes.AiMemory],
+		outputNames: ['Memory'],
+		credentials: [
+			{
+				name: 'motorheadApi',
+				required: true,
+			},
+		],
+		properties: [
+			getConnectionHintNoticeField([NodeConnectionTypes.AiAgent]),
+			{
+				displayName:
+					'The Motorhead project is no longer maintained. This node is deprecated and will be removed in a future version.',
+				name: 'deprecationNotice',
+				type: 'notice',
+				default: '',
+			},
+			{
+				displayName: 'Session ID',
+				name: 'sessionId',
+				type: 'string',
+				required: true,
+				default: '',
+				displayOptions: {
+					show: {
+						'@version': [1],
+					},
+				},
+			},
+			{
+				displayName: 'Session ID',
+				name: 'sessionId',
+				type: 'string',
+				default: '={{ $json.sessionId }}',
+				description: 'The key to use to store the memory',
+				displayOptions: {
+					show: {
+						'@version': [1.1],
+					},
+				},
+			},
+			{
+				...sessionIdOption,
+				displayOptions: {
+					show: {
+						'@version': [{ _cnd: { gte: 1.2 } }],
+					},
+				},
+			},
+			expressionSessionKeyProperty(1.3),
+			sessionKeyProperty,
+		],
+	};
+
+	async supplyData(this: ISupplyDataFunctions, itemIndex: number): Promise<SupplyData> {
+		const credentials = await this.getCredentials('motorheadApi');
+		const nodeVersion = this.getNode().typeVersion;
+
+		let sessionId;
+
+		if (nodeVersion >= 1.2) {
+			sessionId = getSessionId(this, itemIndex);
+		} else {
+			sessionId = this.getNodeParameter('sessionId', itemIndex) as string;
+		}
+
+		const memory = new MotorheadMemory({
+			sessionId,
+			url: `${credentials.host as string}/motorhead`,
+			clientId: credentials.clientId as string,
+			apiKey: credentials.apiKey as string,
+			memoryKey: 'chat_history',
+			returnMessages: true,
+			inputKey: 'input',
+			outputKey: 'output',
+		});
+
+		await memory.init();
+
+		return {
+			response: logWrapper(memory, this),
+		};
+	}
+}