pull:初次提交
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Yep_Q
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import { ChatCohere } from '@langchain/cohere';
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import type { LLMResult } from '@langchain/core/outputs';
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import type {
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INodeType,
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INodeTypeDescription,
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ISupplyDataFunctions,
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SupplyData,
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} from 'n8n-workflow';
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import { getConnectionHintNoticeField } from '@utils/sharedFields';
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import { makeN8nLlmFailedAttemptHandler } from '../n8nLlmFailedAttemptHandler';
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import { N8nLlmTracing } from '../N8nLlmTracing';
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export function tokensUsageParser(result: LLMResult): {
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completionTokens: number;
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promptTokens: number;
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totalTokens: number;
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} {
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let totalInputTokens = 0;
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let totalOutputTokens = 0;
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result.generations?.forEach((generationArray) => {
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generationArray.forEach((gen) => {
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const inputTokens = gen.generationInfo?.meta?.tokens?.inputTokens ?? 0;
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const outputTokens = gen.generationInfo?.meta?.tokens?.outputTokens ?? 0;
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totalInputTokens += inputTokens;
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totalOutputTokens += outputTokens;
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});
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});
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return {
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completionTokens: totalOutputTokens,
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promptTokens: totalInputTokens,
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totalTokens: totalInputTokens + totalOutputTokens,
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};
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}
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export class LmChatCohere implements INodeType {
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description: INodeTypeDescription = {
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displayName: 'Cohere Chat Model',
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name: 'lmChatCohere',
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icon: { light: 'file:cohere.svg', dark: 'file:cohere.dark.svg' },
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group: ['transform'],
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version: [1],
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description: 'For advanced usage with an AI chain',
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defaults: {
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name: 'Cohere Chat Model',
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},
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codex: {
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categories: ['AI'],
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subcategories: {
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AI: ['Language Models', 'Root Nodes'],
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'Language Models': ['Chat Models (Recommended)'],
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},
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resources: {
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primaryDocumentation: [
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{
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url: 'https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmchatcohere/',
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},
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],
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},
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},
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inputs: [],
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outputs: ['ai_languageModel'],
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outputNames: ['Model'],
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credentials: [
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{
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name: 'cohereApi',
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required: true,
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},
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],
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requestDefaults: {
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baseURL: '={{$credentials?.url}}',
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headers: {
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accept: 'application/json',
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authorization: '=Bearer {{$credentials?.apiKey}}',
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},
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},
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properties: [
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getConnectionHintNoticeField(['ai_chain', 'ai_agent']),
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{
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displayName: 'Model',
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name: 'model',
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type: 'options',
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description:
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'The model which will generate the completion. <a href="https://docs.cohere.com/docs/models">Learn more</a>.',
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typeOptions: {
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loadOptions: {
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routing: {
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request: {
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method: 'GET',
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url: '/v1/models?page_size=100&endpoint=chat',
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},
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output: {
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postReceive: [
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{
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type: 'rootProperty',
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properties: {
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property: 'models',
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},
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},
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{
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type: 'setKeyValue',
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properties: {
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name: '={{$responseItem.name}}',
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value: '={{$responseItem.name}}',
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description: '={{$responseItem.description}}',
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},
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},
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{
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type: 'sort',
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properties: {
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key: 'name',
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},
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},
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],
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},
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},
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},
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},
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default: 'command-a-03-2025',
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},
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{
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displayName: 'Options',
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name: 'options',
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placeholder: 'Add Option',
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description: 'Additional options to add',
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type: 'collection',
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default: {},
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options: [
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{
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displayName: 'Sampling Temperature',
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name: 'temperature',
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default: 0.7,
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typeOptions: { maxValue: 2, minValue: 0, numberPrecision: 1 },
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description:
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'Controls randomness: Lowering results in less random completions. As the temperature approaches zero, the model will become deterministic and repetitive.',
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type: 'number',
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},
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{
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displayName: 'Max Retries',
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name: 'maxRetries',
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default: 2,
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description: 'Maximum number of retries to attempt',
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type: 'number',
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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 supplyData(this: ISupplyDataFunctions, itemIndex: number): Promise<SupplyData> {
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const credentials = await this.getCredentials<{ url?: string; apiKey?: string }>('cohereApi');
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const modelName = this.getNodeParameter('model', itemIndex) as string;
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const options = this.getNodeParameter('options', itemIndex, {}) as {
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maxRetries: number;
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temperature?: number;
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};
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const model = new ChatCohere({
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apiKey: credentials.apiKey,
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model: modelName,
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temperature: options.temperature,
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maxRetries: options.maxRetries ?? 2,
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callbacks: [new N8nLlmTracing(this, { tokensUsageParser })],
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onFailedAttempt: makeN8nLlmFailedAttemptHandler(this),
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});
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return {
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response: model,
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};
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}
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}
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@@ -0,0 +1,5 @@
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<svg width="40" height="40" viewBox="0 0 40 40" fill="none" xmlns="http://www.w3.org/2000/svg">
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<path fill-rule="evenodd" clip-rule="evenodd" d="M12.96 23.84C14.0267 23.84 16.16 23.7867 19.1467 22.56C22.6133 21.12 29.44 18.56 34.4 15.8933C37.8667 14.0267 39.36 11.5733 39.36 8.26667C39.36 3.73333 35.68 0 31.0933 0H11.8933C5.33333 0 0 5.33333 0 11.8933C0 18.4533 5.01333 23.84 12.96 23.84Z" fill="white"/>
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<path fill-rule="evenodd" clip-rule="evenodd" d="M16.2134 31.9999C16.2134 28.7999 18.1334 25.8666 21.12 24.6399L27.1467 22.1333C33.28 19.6266 40 24.1066 40 30.7199C40 35.8399 35.84 39.9999 30.72 39.9999H24.16C19.7867 39.9999 16.2134 36.4266 16.2134 31.9999Z" fill="white"/>
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<path d="M6.88 25.3867C3.09333 25.3867 0 28.4801 0 32.2667V33.1734C0 36.9067 3.09333 40.0001 6.88 40.0001C10.6667 40.0001 13.76 36.9067 13.76 33.1201V32.2134C13.7067 28.4801 10.6667 25.3867 6.88 25.3867Z" fill="white"/>
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</svg>
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After Width: | Height: | Size: 907 B |
@@ -0,0 +1,5 @@
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<svg width="40" height="40" viewBox="0 0 40 40" fill="none" xmlns="http://www.w3.org/2000/svg">
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<path fill-rule="evenodd" clip-rule="evenodd" d="M12.96 23.84C14.0267 23.84 16.16 23.7867 19.1467 22.56C22.6133 21.12 29.44 18.56 34.4 15.8933C37.8667 14.0267 39.36 11.5733 39.36 8.26667C39.36 3.73333 35.68 0 31.0933 0H11.8933C5.33333 0 0 5.33333 0 11.8933C0 18.4533 5.01333 23.84 12.96 23.84Z" fill="#39594D"/>
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<path fill-rule="evenodd" clip-rule="evenodd" d="M16.2134 31.9999C16.2134 28.7999 18.1334 25.8666 21.12 24.6399L27.1467 22.1333C33.28 19.6266 40 24.1066 40 30.7199C40 35.8399 35.84 39.9999 30.72 39.9999H24.16C19.7867 39.9999 16.2134 36.4266 16.2134 31.9999Z" fill="#D18EE2"/>
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<path d="M6.88 25.3867C3.09333 25.3867 0 28.4801 0 32.2667V33.1734C0 36.9067 3.09333 40.0001 6.88 40.0001C10.6667 40.0001 13.76 36.9067 13.76 33.1201V32.2134C13.7067 28.4801 10.6667 25.3867 6.88 25.3867Z" fill="#FF7759"/>
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</svg>
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After Width: | Height: | Size: 913 B |
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