98 lines
3.1 KiB
TypeScript
98 lines
3.1 KiB
TypeScript
import { INode, INodeData, INodeParams } from '../../../src/Interface'
|
|
import { initializeAgentExecutorWithOptions, AgentExecutor, InitializeAgentExecutorOptions } from 'langchain/agents'
|
|
import { Tool } from 'langchain/tools'
|
|
import { BaseChatModel } from 'langchain/chat_models/base'
|
|
import { BaseChatMemory } from 'langchain/memory'
|
|
import { getBaseClasses } from '../../../src/utils'
|
|
|
|
class ConversationalAgent_Agents implements INode {
|
|
label: string
|
|
name: string
|
|
description: string
|
|
type: string
|
|
icon: string
|
|
category: string
|
|
baseClasses: string[]
|
|
inputs: INodeParams[]
|
|
|
|
constructor() {
|
|
this.label = 'Conversational Agent'
|
|
this.name = 'conversationalAgent'
|
|
this.type = 'AgentExecutor'
|
|
this.category = 'Agents'
|
|
this.icon = 'agent.svg'
|
|
this.description = 'Conversational agent for a chat model. It will utilize chat specific prompts'
|
|
this.baseClasses = [this.type, ...getBaseClasses(AgentExecutor)]
|
|
this.inputs = [
|
|
{
|
|
label: 'Allowed Tools',
|
|
name: 'tools',
|
|
type: 'Tool',
|
|
list: true
|
|
},
|
|
{
|
|
label: 'Chat Model',
|
|
name: 'model',
|
|
type: 'BaseChatModel'
|
|
},
|
|
{
|
|
label: 'Memory',
|
|
name: 'memory',
|
|
type: 'BaseChatMemory'
|
|
},
|
|
{
|
|
label: 'System Message',
|
|
name: 'systemMessage',
|
|
type: 'string',
|
|
rows: 4,
|
|
optional: true,
|
|
additionalParams: true
|
|
},
|
|
{
|
|
label: 'Human Message',
|
|
name: 'humanMessage',
|
|
type: 'string',
|
|
rows: 4,
|
|
optional: true,
|
|
additionalParams: true
|
|
}
|
|
]
|
|
}
|
|
|
|
async init(nodeData: INodeData): Promise<any> {
|
|
const model = nodeData.inputs?.model as BaseChatModel
|
|
const tools = nodeData.inputs?.tools as Tool[]
|
|
const memory = nodeData.inputs?.memory as BaseChatMemory
|
|
const humanMessage = nodeData.inputs?.humanMessage as string
|
|
const systemMessage = nodeData.inputs?.systemMessage as string
|
|
|
|
const obj: InitializeAgentExecutorOptions = {
|
|
agentType: 'chat-conversational-react-description',
|
|
verbose: true
|
|
}
|
|
|
|
const agentArgs: any = {}
|
|
if (humanMessage) {
|
|
agentArgs.humanMessage = humanMessage
|
|
}
|
|
if (systemMessage) {
|
|
agentArgs.systemMessage = systemMessage
|
|
}
|
|
|
|
if (Object.keys(agentArgs).length) obj.agentArgs = agentArgs
|
|
|
|
const executor = await initializeAgentExecutorWithOptions(tools, model, obj)
|
|
executor.memory = memory
|
|
return executor
|
|
}
|
|
|
|
async run(nodeData: INodeData, input: string): Promise<string> {
|
|
const executor = nodeData.instance as AgentExecutor
|
|
const result = await executor.call({ input })
|
|
|
|
return result?.output
|
|
}
|
|
}
|
|
|
|
module.exports = { nodeClass: ConversationalAgent_Agents }
|