66 lines
2.0 KiB
TypeScript
66 lines
2.0 KiB
TypeScript
import { INode, INodeData, INodeParams } from '../../../src/Interface'
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import { getBaseClasses } from '../../../src/utils'
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import { DynamicTool } from 'langchain/tools'
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import { createRetrieverTool } from 'langchain/agents/toolkits'
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import { BaseRetriever } from 'langchain/schema/retriever'
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class Retriever_Tools 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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baseClasses: string[]
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credential: INodeParams
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inputs: INodeParams[]
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constructor() {
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this.label = 'Retriever Tool'
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this.name = 'retrieverTool'
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this.version = 1.0
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this.type = 'RetrieverTool'
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this.icon = 'retriever-tool.png'
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this.category = 'Tools'
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this.description = 'Use a retriever as allowed tool for agent'
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this.baseClasses = [this.type, 'DynamicTool', ...getBaseClasses(DynamicTool)]
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this.inputs = [
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{
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label: 'Retriever Name',
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name: 'name',
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type: 'string',
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placeholder: 'search_state_of_union'
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},
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{
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label: 'Retriever Description',
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name: 'description',
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type: 'string',
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description: 'When should agent uses to retrieve documents',
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rows: 3,
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placeholder: 'Searches and returns documents regarding the state-of-the-union.'
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},
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{
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label: 'Retriever',
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name: 'retriever',
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type: 'BaseRetriever'
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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 name = nodeData.inputs?.name as string
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const description = nodeData.inputs?.description as string
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const retriever = nodeData.inputs?.retriever as BaseRetriever
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const tool = createRetrieverTool(retriever, {
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name,
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description
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})
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return tool
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}
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}
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module.exports = { nodeClass: Retriever_Tools }
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