first commit

packages/@n8n/nodes-langchain/nodes/llms/LMOllama/LmOllama.node.ts

@@ -0,0 +1,80 @@
+import { Ollama } from '@langchain/ollama';
+import {
+	NodeConnectionTypes,
+	type INodeType,
+	type INodeTypeDescription,
+	type ISupplyDataFunctions,
+	type SupplyData,
+} from 'n8n-workflow';
+
+import { ollamaDescription, ollamaModel, ollamaOptions } from './description';
+import {
+	makeN8nLlmFailedAttemptHandler,
+	N8nLlmTracing,
+	getConnectionHintNoticeField,
+} from '@n8n/ai-utilities';
+
+export class LmOllama implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Ollama Model',
+
+		name: 'lmOllama',
+		icon: 'file:ollama.svg',
+		group: ['transform'],
+		version: 1,
+		description: 'Language Model Ollama',
+		defaults: {
+			name: 'Ollama Model',
+		},
+		codex: {
+			categories: ['AI'],
+			subcategories: {
+				AI: ['Language Models', 'Root Nodes'],
+				'Language Models': ['Text Completion Models'],
+			},
+			resources: {
+				primaryDocumentation: [
+					{
+						url: 'https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmollama/',
+					},
+				],
+			},
+		},
+
+		inputs: [],
+
+		outputs: [NodeConnectionTypes.AiLanguageModel],
+		outputNames: ['Model'],
+		...ollamaDescription,
+		properties: [
+			getConnectionHintNoticeField([NodeConnectionTypes.AiChain, NodeConnectionTypes.AiAgent]),
+			ollamaModel,
+			ollamaOptions,
+		],
+	};
+
+	async supplyData(this: ISupplyDataFunctions, itemIndex: number): Promise<SupplyData> {
+		const credentials = await this.getCredentials('ollamaApi');
+
+		const modelName = this.getNodeParameter('model', itemIndex) as string;
+		const options = this.getNodeParameter('options', itemIndex, {}) as object;
+		const headers = credentials.apiKey
+			? {
+					Authorization: `Bearer ${credentials.apiKey as string}`,
+				}
+			: undefined;
+
+		const model = new Ollama({
+			baseUrl: credentials.baseUrl as string,
+			model: modelName,
+			...options,
+			callbacks: [new N8nLlmTracing(this)],
+			onFailedAttempt: makeN8nLlmFailedAttemptHandler(this),
+			headers,
+		});
+
+		return {
+			response: model,
+		};
+	}
+}