feat: Add DeepSeek Chat Model node (#12873)

This commit is contained in:
oleg
2025-01-28 16:43:50 +01:00
committed by GitHub
parent d5062189db
commit 9918afa51b
6 changed files with 306 additions and 1 deletions

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@@ -0,0 +1,47 @@
import type {
IAuthenticateGeneric,
ICredentialTestRequest,
ICredentialType,
INodeProperties,
} from 'n8n-workflow';
export class DeepSeekApi implements ICredentialType {
name = 'deepSeekApi';
displayName = 'DeepSeek';
documentationUrl = 'deepseek';
properties: INodeProperties[] = [
{
displayName: 'API Key',
name: 'apiKey',
type: 'string',
typeOptions: { password: true },
required: true,
default: '',
},
{
displayName: 'Base URL',
name: 'url',
type: 'hidden',
default: 'https://api.deepseek.com',
},
];
authenticate: IAuthenticateGeneric = {
type: 'generic',
properties: {
headers: {
Authorization: '=Bearer {{$credentials.apiKey}}',
},
},
};
test: ICredentialTestRequest = {
request: {
baseURL: '={{ $credentials.url }}',
url: '/models',
},
};
}

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@@ -91,6 +91,7 @@ function getInputs(
'@n8n/n8n-nodes-langchain.lmChatGoogleVertex',
'@n8n/n8n-nodes-langchain.lmChatMistralCloud',
'@n8n/n8n-nodes-langchain.lmChatAzureOpenAi',
'@n8n/n8n-nodes-langchain.lmChatDeepSeek',
'@n8n/n8n-nodes-langchain.lmChatOpenRouter',
],
},
@@ -120,6 +121,7 @@ function getInputs(
'@n8n/n8n-nodes-langchain.lmChatGroq',
'@n8n/n8n-nodes-langchain.lmChatGoogleVertex',
'@n8n/n8n-nodes-langchain.lmChatGoogleGemini',
'@n8n/n8n-nodes-langchain.lmChatDeepSeek',
'@n8n/n8n-nodes-langchain.lmChatOpenRouter',
],
},

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@@ -258,7 +258,7 @@ export class LmChatOpenAi implements INodeType {
displayName: 'Sampling Temperature',
name: 'temperature',
default: 0.7,
typeOptions: { maxValue: 1, minValue: 0, numberPrecision: 1 },
typeOptions: { maxValue: 2, 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',

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@@ -0,0 +1,253 @@
/* eslint-disable n8n-nodes-base/node-dirname-against-convention */
import { ChatOpenAI, type ClientOptions } from '@langchain/openai';
import {
NodeConnectionType,
type INodeType,
type INodeTypeDescription,
type ISupplyDataFunctions,
type SupplyData,
} from 'n8n-workflow';
import { getConnectionHintNoticeField } from '@utils/sharedFields';
import { openAiFailedAttemptHandler } from '../../vendors/OpenAi/helpers/error-handling';
import { makeN8nLlmFailedAttemptHandler } from '../n8nLlmFailedAttemptHandler';
import { N8nLlmTracing } from '../N8nLlmTracing';
export class LmChatDeepSeek implements INodeType {
description: INodeTypeDescription = {
displayName: 'DeepSeek Chat Model',
// eslint-disable-next-line n8n-nodes-base/node-class-description-name-miscased
name: 'lmChatDeepSeek',
icon: 'file:deepseek.svg',
group: ['transform'],
version: [1],
description: 'For advanced usage with an AI chain',
defaults: {
name: 'DeepSeek Chat Model',
},
codex: {
categories: ['AI'],
subcategories: {
AI: ['Language Models', 'Root Nodes'],
'Language Models': ['Chat Models (Recommended)'],
},
resources: {
primaryDocumentation: [
{
url: 'https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmchatdeepseek/',
},
],
},
},
// eslint-disable-next-line n8n-nodes-base/node-class-description-inputs-wrong-regular-node
inputs: [],
// eslint-disable-next-line n8n-nodes-base/node-class-description-outputs-wrong
outputs: [NodeConnectionType.AiLanguageModel],
outputNames: ['Model'],
credentials: [
{
name: 'deepSeekApi',
required: true,
},
],
requestDefaults: {
ignoreHttpStatusErrors: true,
baseURL: '={{ $credentials?.url }}',
},
properties: [
getConnectionHintNoticeField([NodeConnectionType.AiChain, NodeConnectionType.AiAgent]),
{
displayName:
'If using JSON response format, you must include word "json" in the prompt in your chain or agent. Also, make sure to select latest models released post November 2023.',
name: 'notice',
type: 'notice',
default: '',
displayOptions: {
show: {
'/options.responseFormat': ['json_object'],
},
},
},
{
displayName: 'Model',
name: 'model',
type: 'options',
description:
'The model which will generate the completion. <a href="https://api-docs.deepseek.com/quick_start/pricing">Learn more</a>.',
typeOptions: {
loadOptions: {
routing: {
request: {
method: 'GET',
url: '/models',
},
output: {
postReceive: [
{
type: 'rootProperty',
properties: {
property: 'data',
},
},
{
type: 'setKeyValue',
properties: {
name: '={{$responseItem.id}}',
value: '={{$responseItem.id}}',
},
},
{
type: 'sort',
properties: {
key: 'name',
},
},
],
},
},
},
},
routing: {
send: {
type: 'body',
property: 'model',
},
},
default: 'deepseek-chat',
},
{
displayName: 'Options',
name: 'options',
placeholder: 'Add Option',
description: 'Additional options to add',
type: 'collection',
default: {},
options: [
{
displayName: 'Frequency Penalty',
name: 'frequencyPenalty',
default: 0,
typeOptions: { maxValue: 2, minValue: -2, numberPrecision: 1 },
description:
"Positive values penalize new tokens based on their existing frequency in the text so far, decreasing the model's likelihood to repeat the same line verbatim",
type: 'number',
},
{
displayName: 'Maximum Number of Tokens',
name: 'maxTokens',
default: -1,
description:
'The maximum number of tokens to generate in the completion. Most models have a context length of 2048 tokens (except for the newest models, which support 32,768).',
type: 'number',
typeOptions: {
maxValue: 32768,
},
},
{
displayName: 'Response Format',
name: 'responseFormat',
default: 'text',
type: 'options',
options: [
{
name: 'Text',
value: 'text',
description: 'Regular text response',
},
{
name: 'JSON',
value: 'json_object',
description:
'Enables JSON mode, which should guarantee the message the model generates is valid JSON',
},
],
},
{
displayName: 'Presence Penalty',
name: 'presencePenalty',
default: 0,
typeOptions: { maxValue: 2, minValue: -2, numberPrecision: 1 },
description:
"Positive values penalize new tokens based on whether they appear in the text so far, increasing the model's likelihood to talk about new topics",
type: 'number',
},
{
displayName: 'Sampling Temperature',
name: 'temperature',
default: 0.7,
typeOptions: { maxValue: 2, 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: 'Timeout',
name: 'timeout',
default: 360000,
description: 'Maximum amount of time a request is allowed to take in milliseconds',
type: 'number',
},
{
displayName: 'Max Retries',
name: 'maxRetries',
default: 2,
description: 'Maximum number of retries to attempt',
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',
},
],
},
],
};
async supplyData(this: ISupplyDataFunctions, itemIndex: number): Promise<SupplyData> {
const credentials = await this.getCredentials<OpenAICompatibleCredential>('deepSeekApi');
const modelName = this.getNodeParameter('model', itemIndex) as string;
const options = this.getNodeParameter('options', itemIndex, {}) as {
frequencyPenalty?: number;
maxTokens?: number;
maxRetries: number;
timeout: number;
presencePenalty?: number;
temperature?: number;
topP?: number;
responseFormat?: 'text' | 'json_object';
};
const configuration: ClientOptions = {
baseURL: credentials.url,
};
const model = new ChatOpenAI({
openAIApiKey: credentials.apiKey,
modelName,
...options,
timeout: options.timeout ?? 60000,
maxRetries: options.maxRetries ?? 2,
configuration,
callbacks: [new N8nLlmTracing(this)],
modelKwargs: options.responseFormat
? {
response_format: { type: options.responseFormat },
}
: undefined,
onFailedAttempt: makeN8nLlmFailedAttemptHandler(this, openAiFailedAttemptHandler),
});
return {
response: model,
};
}
}

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@@ -0,0 +1 @@
<svg width="40" height="40" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>DeepSeek</title><path d="M23.748 4.482c-.254-.124-.364.113-.512.234-.051.039-.094.09-.137.136-.372.397-.806.657-1.373.626-.829-.046-1.537.214-2.163.848-.133-.782-.575-1.248-1.247-1.548-.352-.156-.708-.311-.955-.65-.172-.241-.219-.51-.305-.774-.055-.16-.11-.323-.293-.35-.2-.031-.278.136-.356.276-.313.572-.434 1.202-.422 1.84.027 1.436.633 2.58 1.838 3.393.137.093.172.187.129.323-.082.28-.18.552-.266.833-.055.179-.137.217-.329.14a5.526 5.526 0 01-1.736-1.18c-.857-.828-1.631-1.742-2.597-2.458a11.365 11.365 0 00-.689-.471c-.985-.957.13-1.743.388-1.836.27-.098.093-.432-.779-.428-.872.004-1.67.295-2.687.684a3.055 3.055 0 01-.465.137 9.597 9.597 0 00-2.883-.102c-1.885.21-3.39 1.102-4.497 2.623C.082 8.606-.231 10.684.152 12.85c.403 2.284 1.569 4.175 3.36 5.653 1.858 1.533 3.997 2.284 6.438 2.14 1.482-.085 3.133-.284 4.994-1.86.47.234.962.327 1.78.397.63.059 1.236-.03 1.705-.128.735-.156.684-.837.419-.961-2.155-1.004-1.682-.595-2.113-.926 1.096-1.296 2.746-2.642 3.392-7.003.05-.347.007-.565 0-.845-.004-.17.035-.237.23-.256a4.173 4.173 0 001.545-.475c1.396-.763 1.96-2.015 2.093-3.517.02-.23-.004-.467-.247-.588zM11.581 18c-2.089-1.642-3.102-2.183-3.52-2.16-.392.024-.321.471-.235.763.09.288.207.486.371.739.114.167.192.416-.113.603-.673.416-1.842-.14-1.897-.167-1.361-.802-2.5-1.86-3.301-3.307-.774-1.393-1.224-2.887-1.298-4.482-.02-.386.093-.522.477-.592a4.696 4.696 0 011.529-.039c2.132.312 3.946 1.265 5.468 2.774.868.86 1.525 1.887 2.202 2.891.72 1.066 1.494 2.082 2.48 2.914.348.292.625.514.891.677-.802.09-2.14.11-3.054-.614zm1-6.44a.306.306 0 01.415-.287.302.302 0 01.2.288.306.306 0 01-.31.307.303.303 0 01-.304-.308zm3.11 1.596c-.2.081-.399.151-.59.16a1.245 1.245 0 01-.798-.254c-.274-.23-.47-.358-.552-.758a1.73 1.73 0 01.016-.588c.07-.327-.008-.537-.239-.727-.187-.156-.426-.199-.688-.199a.559.559 0 01-.254-.078c-.11-.054-.2-.19-.114-.358.028-.054.16-.186.192-.21.356-.202.767-.136 1.146.016.352.144.618.408 1.001.782.391.451.462.576.685.914.176.265.336.537.445.848.067.195-.019.354-.25.452z" fill="#4D6BFE"></path></svg>

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@@ -25,6 +25,7 @@
"dist/credentials/AnthropicApi.credentials.js",
"dist/credentials/AzureOpenAiApi.credentials.js",
"dist/credentials/CohereApi.credentials.js",
"dist/credentials/DeepSeekApi.credentials.js",
"dist/credentials/GooglePalmApi.credentials.js",
"dist/credentials/GroqApi.credentials.js",
"dist/credentials/HuggingFaceApi.credentials.js",
@@ -65,6 +66,7 @@
"dist/nodes/llms/LMChatAnthropic/LmChatAnthropic.node.js",
"dist/nodes/llms/LmChatAzureOpenAi/LmChatAzureOpenAi.node.js",
"dist/nodes/llms/LmChatAwsBedrock/LmChatAwsBedrock.node.js",
"dist/nodes/llms/LmChatDeepSeek/LmChatDeepSeek.node.js",
"dist/nodes/llms/LmChatGoogleGemini/LmChatGoogleGemini.node.js",
"dist/nodes/llms/LmChatGoogleVertex/LmChatGoogleVertex.node.js",
"dist/nodes/llms/LmChatGroq/LmChatGroq.node.js",