feat: Add support for Ollama embeddings API (#8732)

Signed-off-by: Oleg Ivaniv <me@olegivaniv.com>
Co-authored-by: Oleg Ivaniv <me@olegivaniv.com>

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

@@ -10,6 +10,7 @@ import {
 import { Ollama } from 'langchain/llms/ollama';
 import { logWrapper } from '../../../utils/logWrapper';
 import { getConnectionHintNoticeField } from '../../../utils/sharedFields';
+import { ollamaDescription, ollamaModel, ollamaOptions } from './description';
 
 export class LmOllama implements INodeType {
 	description: INodeTypeDescription = {
@@ -41,103 +42,11 @@ export class LmOllama implements INodeType {
 		// eslint-disable-next-line n8n-nodes-base/node-class-description-outputs-wrong
 		outputs: [NodeConnectionType.AiLanguageModel],
 		outputNames: ['Model'],
-		credentials: [
-			{
-				name: 'ollamaApi',
-				required: true,
-			},
-		],
-		requestDefaults: {
-			ignoreHttpStatusErrors: true,
-			baseURL: '={{ $credentials.baseUrl.replace(new RegExp("/$"), "") }}',
-		},
+		...ollamaDescription,
 		properties: [
 			getConnectionHintNoticeField([NodeConnectionType.AiChain, NodeConnectionType.AiAgent]),
-			{
-				displayName: 'Model',
-				name: 'model',
-				type: 'options',
-				default: 'llama2',
-				description:
-					'The model which will generate the completion. To download models, visit <a href="https://ollama.ai/library">Ollama Models Library</a>.',
-				typeOptions: {
-					loadOptions: {
-						routing: {
-							request: {
-								method: 'GET',
-								url: '/api/tags',
-							},
-							output: {
-								postReceive: [
-									{
-										type: 'rootProperty',
-										properties: {
-											property: 'models',
-										},
-									},
-									{
-										type: 'setKeyValue',
-										properties: {
-											name: '={{$responseItem.name}}',
-											value: '={{$responseItem.name}}',
-										},
-									},
-									{
-										type: 'sort',
-										properties: {
-											key: 'name',
-										},
-									},
-								],
-							},
-						},
-					},
-				},
-				routing: {
-					send: {
-						type: 'body',
-						property: 'model',
-					},
-				},
-				required: true,
-			},
-			{
-				displayName: 'Options',
-				name: 'options',
-				placeholder: 'Add Option',
-				description: 'Additional options to add',
-				type: 'collection',
-				default: {},
-				options: [
-					{
-						displayName: 'Sampling Temperature',
-						name: 'temperature',
-						default: 0.7,
-						typeOptions: { maxValue: 1, minValue: 0, numberPrecision: 1 },
-						description:
-							'Controls randomness: Lowering results in less random completions. As the temperature approaches zero, the model will become deterministic and repetitive.',
-						type: 'number',
-					},
-					{
-						displayName: 'Top K',
-						name: 'topK',
-						default: -1,
-						typeOptions: { maxValue: 1, minValue: -1, numberPrecision: 1 },
-						description:
-							'Used to remove "long tail" low probability responses. Defaults to -1, which disables it.',
-						type: 'number',
-					},
-					{
-						displayName: 'Top P',
-						name: 'topP',
-						default: 1,
-						typeOptions: { maxValue: 1, minValue: 0, numberPrecision: 1 },
-						description:
-							'Controls diversity via nucleus sampling: 0.5 means half of all likelihood-weighted options are considered. We generally recommend altering this or temperature but not both.',
-						type: 'number',
-					},
-				],
-			},
+			ollamaModel,
+			ollamaOptions,
 		],
 	};