129 lines
4.4 KiB
TypeScript
129 lines
4.4 KiB
TypeScript
import { ICommonObject, INode, INodeData, INodeOutputsValue, INodeParams } from '../../../src/Interface'
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import { Embeddings } from 'langchain/embeddings/base'
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import { getBaseClasses, getCredentialData, getCredentialParam } from '../../../src/utils'
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import { SupabaseLibArgs, SupabaseVectorStore } from 'langchain/vectorstores/supabase'
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import { createClient } from '@supabase/supabase-js'
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class Supabase_Existing_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 = 'Supabase Load Existing Index'
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this.name = 'supabaseExistingIndex'
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this.version = 1.0
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this.type = 'Supabase'
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this.icon = 'supabase.svg'
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this.category = 'Vector Stores'
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this.description = 'Load existing index from Supabase (i.e: Document has been upserted)'
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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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credentialNames: ['supabaseApi']
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}
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this.inputs = [
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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: 'Supabase Project URL',
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name: 'supabaseProjUrl',
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type: 'string'
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},
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{
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label: 'Table Name',
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name: 'tableName',
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type: 'string'
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},
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{
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label: 'Query Name',
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name: 'queryName',
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type: 'string'
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},
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{
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label: 'Supabase Metadata Filter',
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name: 'supabaseMetadataFilter',
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type: 'json',
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optional: true,
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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: 'Supabase 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: 'Supabase Vector Store',
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name: 'vectorStore',
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baseClasses: [this.type, ...getBaseClasses(SupabaseVectorStore)]
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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 supabaseProjUrl = nodeData.inputs?.supabaseProjUrl as string
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const tableName = nodeData.inputs?.tableName as string
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const queryName = nodeData.inputs?.queryName as string
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const embeddings = nodeData.inputs?.embeddings as Embeddings
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const supabaseMetadataFilter = nodeData.inputs?.supabaseMetadataFilter
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const output = nodeData.outputs?.output as string
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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 credentialData = await getCredentialData(nodeData.credential ?? '', options)
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const supabaseApiKey = getCredentialParam('supabaseApiKey', credentialData, nodeData)
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const client = createClient(supabaseProjUrl, supabaseApiKey)
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const obj: SupabaseLibArgs = {
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client,
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tableName,
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queryName
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}
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if (supabaseMetadataFilter) {
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const metadatafilter = typeof supabaseMetadataFilter === 'object' ? supabaseMetadataFilter : JSON.parse(supabaseMetadataFilter)
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obj.filter = metadatafilter
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}
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const vectorStore = await SupabaseVectorStore.fromExistingIndex(embeddings, obj)
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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: Supabase_Existing_VectorStores }
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