add weaviate
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Henry
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import { INode, INodeData, INodeOutputsValue, INodeParams } from '../../../src/Interface'
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import { Embeddings } from 'langchain/embeddings/base'
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import { getBaseClasses } from '../../../src/utils'
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import weaviate, { WeaviateClient, ApiKey } from 'weaviate-ts-client'
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import { WeaviateLibArgs, WeaviateStore } from 'langchain/vectorstores/weaviate'
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class Weaviate_Existing_VectorStores implements INode {
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label: string
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name: string
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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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baseClasses: string[]
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inputs: INodeParams[]
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outputs: INodeOutputsValue[]
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constructor() {
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this.label = 'Weaviate Load Existing Index'
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this.name = 'weaviateExistingIndex'
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this.type = 'Weaviate'
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this.icon = 'weaviate.png'
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this.category = 'Vector Stores'
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this.description = 'Load existing index from Weaviate (i.e: Document has been upserted)'
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this.baseClasses = [this.type, 'VectorStoreRetriever', 'BaseRetriever']
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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: 'Weaviate Scheme',
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name: 'weaviateScheme',
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type: 'string',
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default: 'https'
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},
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{
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label: 'Weaviate Host',
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name: 'weaviateHost',
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type: 'string',
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default: 'localhost'
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},
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{
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label: 'Weaviate Index',
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name: 'weaviateIndex',
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type: 'string',
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placeholder: 'Test'
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},
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{
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label: 'Weaviate API Key',
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name: 'weaviateApiKey',
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type: 'password',
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optional: true
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},
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{
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label: 'Weaviate Text Key',
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name: 'weaviateTextKey',
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type: 'string',
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placeholder: 'text',
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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: 'Weaviate Metadata Keys',
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name: 'weaviateMetadataKeys',
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type: 'string',
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rows: 4,
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placeholder: `["foo"]`,
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optional: true,
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additionalParams: true
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}
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]
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this.outputs = [
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{
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label: 'Weaviate 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: 'Weaviate Vector Store',
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name: 'vectorStore',
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baseClasses: [this.type, ...getBaseClasses(WeaviateStore)]
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}
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]
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}
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async init(nodeData: INodeData): Promise<any> {
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const weaviateScheme = nodeData.inputs?.weaviateScheme as string
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const weaviateHost = nodeData.inputs?.weaviateHost as string
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const weaviateIndex = nodeData.inputs?.weaviateIndex as string
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const weaviateApiKey = nodeData.inputs?.weaviateApiKey as string
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const weaviateTextKey = nodeData.inputs?.weaviateTextKey as string
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const weaviateMetadataKeys = nodeData.inputs?.weaviateMetadataKeys as string
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const embeddings = nodeData.inputs?.embeddings as Embeddings
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const output = nodeData.outputs?.output as string
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const client: WeaviateClient = weaviate.client({
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scheme: weaviateScheme || 'https',
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host: weaviateHost || 'localhost',
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apiKey: new ApiKey(weaviateApiKey || 'default')
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})
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const obj: WeaviateLibArgs = {
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client,
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indexName: weaviateIndex
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}
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if (weaviateTextKey) obj.textKey = weaviateTextKey
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if (weaviateMetadataKeys) obj.metadataKeys = JSON.parse(weaviateMetadataKeys.replace(/\s/g, ''))
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const vectorStore = await WeaviateStore.fromExistingIndex(embeddings, obj)
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if (output === 'retriever') {
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const retriever = vectorStore.asRetriever()
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return retriever
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} else if (output === 'vectorStore') {
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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: Weaviate_Existing_VectorStores }
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@ -0,0 +1,137 @@
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import { INode, INodeData, INodeOutputsValue, INodeParams } from '../../../src/Interface'
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import { Embeddings } from 'langchain/embeddings/base'
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import { Document } from 'langchain/document'
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import { getBaseClasses } from '../../../src/utils'
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import { WeaviateLibArgs, WeaviateStore } from 'langchain/vectorstores/weaviate'
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import weaviate, { WeaviateClient, ApiKey } from 'weaviate-ts-client'
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class WeaviateUpsert_VectorStores implements INode {
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label: string
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name: string
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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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baseClasses: string[]
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inputs: INodeParams[]
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outputs: INodeOutputsValue[]
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constructor() {
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this.label = 'Weaviate Upsert Document'
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this.name = 'weaviateUpsert'
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this.type = 'Weaviate'
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this.icon = 'weaviate.png'
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this.category = 'Vector Stores'
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this.description = 'Upsert documents to Weaviate'
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this.baseClasses = [this.type, 'VectorStoreRetriever', 'BaseRetriever']
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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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},
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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: 'Weaviate Scheme',
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name: 'weaviateScheme',
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type: 'string',
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default: 'https'
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},
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{
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label: 'Weaviate Host',
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name: 'weaviateHost',
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type: 'string',
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default: 'localhost'
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},
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{
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label: 'Weaviate Index',
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name: 'weaviateIndex',
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type: 'string',
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placeholder: 'Test'
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},
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{
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label: 'Weaviate API Key',
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name: 'weaviateApiKey',
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type: 'password',
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optional: true
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},
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{
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label: 'Weaviate Text Key',
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name: 'weaviateTextKey',
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type: 'string',
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placeholder: 'text',
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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: 'Weaviate Metadata Keys',
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name: 'weaviateMetadataKeys',
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type: 'string',
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rows: 4,
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placeholder: `["foo"]`,
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optional: true,
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additionalParams: true
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}
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]
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this.outputs = [
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{
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label: 'Weaviate 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: 'Weaviate Vector Store',
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name: 'vectorStore',
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baseClasses: [this.type, ...getBaseClasses(WeaviateStore)]
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}
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]
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}
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async init(nodeData: INodeData): Promise<any> {
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const weaviateScheme = nodeData.inputs?.weaviateScheme as string
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const weaviateHost = nodeData.inputs?.weaviateHost as string
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const weaviateIndex = nodeData.inputs?.weaviateIndex as string
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const weaviateApiKey = nodeData.inputs?.weaviateApiKey as string
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const weaviateTextKey = nodeData.inputs?.weaviateTextKey as string
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const weaviateMetadataKeys = nodeData.inputs?.weaviateMetadataKeys as string
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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 output = nodeData.outputs?.output as string
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const client: WeaviateClient = weaviate.client({
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scheme: weaviateScheme || 'https',
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host: weaviateHost || 'localhost',
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apiKey: new ApiKey(weaviateApiKey || 'default')
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})
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const finalDocs = []
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for (let i = 0; i < docs.length; i += 1) {
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finalDocs.push(new Document(docs[i]))
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}
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const obj: WeaviateLibArgs = {
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client,
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indexName: weaviateIndex
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}
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if (weaviateTextKey) obj.textKey = weaviateTextKey
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if (weaviateMetadataKeys) obj.metadataKeys = JSON.parse(weaviateMetadataKeys.replace(/\s/g, ''))
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const vectorStore = await WeaviateStore.fromDocuments(finalDocs, embeddings, obj)
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if (output === 'retriever') {
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const retriever = vectorStore.asRetriever()
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return retriever
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} else if (output === 'vectorStore') {
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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: WeaviateUpsert_VectorStores }
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"dotenv": "^16.0.0",
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"express": "^4.17.3",
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"form-data": "^4.0.0",
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"graphql": "^16.6.0",
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"langchain": "^0.0.63",
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"mammoth": "^1.5.1",
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"moment": "^2.29.3",
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"node-fetch": "2",
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"pdf-parse": "^1.1.1",
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"weaviate-ts-client": "^1.1.0",
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"ws": "^8.9.0"
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},
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"devDependencies": {
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