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Markus Kiss
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| import { AzureChatOpenAI, AzureOpenAIEmbeddings } from '@langchain/openai' | ||
| import { MarkdownTextSplitter, TokenTextSplitter } from '@langchain/textsplitters' | ||
| import { FaissStore } from '@langchain/community/vectorstores/faiss' | ||
| import path from 'path' | ||
| import { FAISS_PATH } from '@/lib/constant' | ||
| import { BaseChatModel } from '@langchain/core/language_models/chat_models' | ||
| import { Embeddings } from '@langchain/core/embeddings' | ||
| import { GlobalConfig } from '@/server/types' | ||
| import { BufferLoader } from 'langchain/document_loaders/fs/buffer' | ||
|
|
||
| export abstract class AiBaseModelPrivider { | ||
| globalConfig: GlobalConfig | ||
|
|
||
| constructor({ globalConfig }) { | ||
| this.globalConfig = globalConfig | ||
| } | ||
|
|
||
| abstract LLM(): BaseChatModel | ||
| abstract Embeddings(): Embeddings | ||
|
|
||
| public MarkdownSplitter(): MarkdownTextSplitter { | ||
| return new MarkdownTextSplitter({ | ||
| chunkSize: 2000, | ||
| chunkOverlap: 200, | ||
| }) | ||
| } | ||
|
|
||
| public TokenTextSplitter(): TokenTextSplitter { | ||
| return new TokenTextSplitter({ | ||
| chunkSize: 2000, | ||
| chunkOverlap: 200, | ||
| }) | ||
| } | ||
|
|
||
| public async VectorStore(): Promise<FaissStore> { | ||
| const FaissStorePath = path.join(process.cwd(), FAISS_PATH) | ||
| try { | ||
| return await FaissStore.load(FaissStorePath, this.Embeddings()) | ||
| } catch (error) { | ||
| try { | ||
| console.log(this.globalConfig) | ||
| const VectorStore = new FaissStore(this.Embeddings(), {}) | ||
| const documents = [ | ||
| { | ||
| pageContent: 'init faiss store', | ||
| metadata: { id: '0' }, | ||
| }, | ||
| ] | ||
| console.log('init faiss store', documents) | ||
| await VectorStore.addDocuments(documents, { ids: ['0'] }) | ||
| await VectorStore.save(FaissStorePath) | ||
| return VectorStore | ||
| } catch (error) { | ||
| console.log('VectorStore error', error) | ||
| throw error | ||
| } | ||
| } | ||
| } | ||
|
|
||
| public AudioLoader(audioPath): BufferLoader { | ||
| return null as unknown as BufferLoader | ||
| } | ||
| } | ||
|
|
||
| export class AzureOpenAIModelProvider extends AiBaseModelPrivider { | ||
| LLM() { | ||
| return new AzureChatOpenAI({ | ||
| azureOpenAIApiInstanceName: this.globalConfig.aiApiEndpoint, | ||
| deploymentName: this.globalConfig.aiModel, | ||
| openAIApiKey: this.globalConfig.aiApiKey, | ||
| openAIApiVersion: this.globalConfig.aiApiVersion, | ||
| temperature: 0 | ||
| }) | ||
| } | ||
|
|
||
| Embeddings() { | ||
| return new AzureOpenAIEmbeddings({ | ||
| azureOpenAIApiInstanceName: this.globalConfig.aiApiEndpoint, | ||
| apiKey: this.globalConfig.aiApiKey, | ||
| deploymentName: this.globalConfig.embeddingModel, | ||
| openAIApiVersion: this.globalConfig.aiApiVersion | ||
| }) | ||
| } | ||
| } |
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