138 lines
4.7 KiB
TypeScript
138 lines
4.7 KiB
TypeScript
import { flatten } from 'lodash'
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import { ZepVectorStore, IZepConfig } from '@langchain/community/vectorstores/zep'
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import { Embeddings } from '@langchain/core/embeddings'
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import { Document } from '@langchain/core/documents'
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import { getBaseClasses, getCredentialData, getCredentialParam } from '../../../src/utils'
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import { ICommonObject, INode, INodeData, INodeOutputsValue, INodeParams } from '../../../src/Interface'
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class Zep_Upsert_VectorStores implements INode {
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label: string
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name: string
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version: number
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description: string
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type: string
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icon: string
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category: string
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badge: string
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baseClasses: string[]
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inputs: INodeParams[]
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credential: INodeParams
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outputs: INodeOutputsValue[]
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constructor() {
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this.label = 'Zep Upsert Document (Open Source)'
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this.name = 'Zep Upsert (Open Source)'
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this.version = 1.0
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this.type = 'Zep'
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this.icon = 'zep.svg'
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this.category = 'Vector Stores'
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this.description = 'Upsert documents to Zep'
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this.baseClasses = [this.type, 'VectorStoreRetriever', 'BaseRetriever']
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this.badge = 'DEPRECATING'
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this.credential = {
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label: 'Connect Credential',
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name: 'credential',
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type: 'credential',
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optional: true,
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description: 'Configure JWT authentication on your Zep instance (Optional)',
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credentialNames: ['zepMemoryApi']
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}
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this.inputs = [
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{
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label: 'Document',
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name: 'document',
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type: 'Document',
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list: true
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},
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{
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label: 'Embeddings',
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name: 'embeddings',
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type: 'Embeddings'
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},
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{
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label: 'Base URL',
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name: 'baseURL',
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type: 'string',
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default: 'http://127.0.0.1:8000'
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},
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{
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label: 'Zep Collection',
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name: 'zepCollection',
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type: 'string',
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placeholder: 'my-first-collection'
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},
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{
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label: 'Embedding Dimension',
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name: 'dimension',
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type: 'number',
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default: 1536,
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additionalParams: true
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},
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{
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label: 'Top K',
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name: 'topK',
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description: 'Number of top results to fetch. Default to 4',
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placeholder: '4',
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type: 'number',
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additionalParams: true,
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optional: true
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}
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]
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this.outputs = [
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{
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label: 'Zep Retriever',
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name: 'retriever',
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baseClasses: this.baseClasses
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},
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{
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label: 'Zep Vector Store',
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name: 'vectorStore',
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baseClasses: [this.type, ...getBaseClasses(ZepVectorStore)]
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}
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]
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}
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async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
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const baseURL = nodeData.inputs?.baseURL as string
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const zepCollection = nodeData.inputs?.zepCollection as string
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const dimension = (nodeData.inputs?.dimension as number) ?? 1536
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const docs = nodeData.inputs?.document as Document[]
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const embeddings = nodeData.inputs?.embeddings as Embeddings
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const topK = nodeData.inputs?.topK as string
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const k = topK ? parseFloat(topK) : 4
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const output = nodeData.outputs?.output as string
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const credentialData = await getCredentialData(nodeData.credential ?? '', options)
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const apiKey = getCredentialParam('apiKey', credentialData, nodeData)
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const flattenDocs = docs && docs.length ? flatten(docs) : []
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const finalDocs = []
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for (let i = 0; i < flattenDocs.length; i += 1) {
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if (flattenDocs[i] && flattenDocs[i].pageContent) {
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finalDocs.push(new Document(flattenDocs[i]))
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}
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}
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const zepConfig: IZepConfig = {
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apiUrl: baseURL,
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collectionName: zepCollection,
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embeddingDimensions: dimension,
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isAutoEmbedded: false
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}
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if (apiKey) zepConfig.apiKey = apiKey
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const vectorStore = await ZepVectorStore.fromDocuments(finalDocs, embeddings, zepConfig)
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if (output === 'retriever') {
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const retriever = vectorStore.asRetriever(k)
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return retriever
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} else if (output === 'vectorStore') {
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;(vectorStore as any).k = k
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return vectorStore
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}
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return vectorStore
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}
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}
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module.exports = { nodeClass: Zep_Upsert_VectorStores }
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