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Feature/sse (#3125)

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* Base changes for ServerSide Events (instead of socket.io)

* lint fixes

* adding of interface and separate methods for streaming events

* lint

* first draft, handles both internal and external prediction end points.

* lint fixes

* additional internal end point for streaming and associated changes

* return streamresponse as true to build agent flow

* 1) JSON formatting for internal events
2) other fixes

* 1) convert internal event to metadata to maintain consistency with external response

* fix action and metadata streaming

* fix for error when agent flow is aborted

* prevent subflows from streaming and other code cleanup

* prevent streaming from enclosed tools

* add fix for preventing chaintool streaming

* update lock file

* add open when hidden to sse

* Streaming errors

* Streaming errors

* add fix for showing error message

---------

Co-authored-by: Henry <hzj94@hotmail.com>
This commit is contained in:
Vinod Kiran
2024-09-17 12:31:25 +05:30
committed by GitHub
parent 7a4c7efcab
commit 26444ac3ae
47 changed files with 1021 additions and 327 deletions
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packages/components/nodes/agents/XMLAgent/XMLAgent.ts
+28 -7
View File
@@ -7,7 +7,16 @@ import { Tool } from '@langchain/core/tools'
import { ChatPromptTemplate, HumanMessagePromptTemplate, MessagesPlaceholder } from '@langchain/core/prompts'
import { formatLogToMessage } from 'langchain/agents/format_scratchpad/log_to_message'
import { getBaseClasses } from '../../../src/utils'
import { FlowiseMemory, ICommonObject, IMessage, INode, INodeData, INodeParams, IUsedTool } from '../../../src/Interface'
import {
FlowiseMemory,
ICommonObject,
IMessage,
INode,
INodeData,
INodeParams,
IServerSideEventStreamer,
IUsedTool
} from '../../../src/Interface'
import { ConsoleCallbackHandler, CustomChainHandler, additionalCallbacks } from '../../../src/handler'
import { AgentExecutor, XMLAgentOutputParser } from '../../../src/agents'
import { Moderation, checkInputs } from '../../moderation/Moderation'
@@ -112,13 +121,19 @@ class XMLAgent_Agents implements INode {
const memory = nodeData.inputs?.memory as FlowiseMemory
const moderations = nodeData.inputs?.inputModeration as Moderation[]
const shouldStreamResponse = options.shouldStreamResponse
const sseStreamer: IServerSideEventStreamer = options.sseStreamer as IServerSideEventStreamer
const chatId = options.chatId
if (moderations && moderations.length > 0) {
try {
// Use the output of the moderation chain as input for the OpenAI Function Agent
input = await checkInputs(moderations, input)
} catch (e) {
await new Promise((resolve) => setTimeout(resolve, 500))
//streamResponse(options.socketIO && options.socketIOClientId, e.message, options.socketIO, options.socketIOClientId)
// if (options.shouldStreamResponse) {
// streamResponse(options.sseStreamer, options.chatId, e.message)
// }
return formatResponse(e.message)
}
}
@@ -131,15 +146,19 @@ class XMLAgent_Agents implements INode {
let sourceDocuments: ICommonObject[] = []
let usedTools: IUsedTool[] = []
if (options.socketIO && options.socketIOClientId) {
const handler = new CustomChainHandler(options.socketIO, options.socketIOClientId)
if (shouldStreamResponse) {
const handler = new CustomChainHandler(sseStreamer, chatId)
res = await executor.invoke({ input }, { callbacks: [loggerHandler, handler, ...callbacks] })
if (res.sourceDocuments) {
options.socketIO.to(options.socketIOClientId).emit('sourceDocuments', flatten(res.sourceDocuments))
if (sseStreamer) {
sseStreamer.streamSourceDocumentsEvent(chatId, flatten(res.sourceDocuments))
}
sourceDocuments = res.sourceDocuments
}
if (res.usedTools) {
options.socketIO.to(options.socketIOClientId).emit('usedTools', res.usedTools)
if (sseStreamer) {
sseStreamer.streamUsedToolsEvent(chatId, flatten(res.usedTools))
}
usedTools = res.usedTools
}
// If the tool is set to returnDirect, stream the output to the client
@@ -149,7 +168,9 @@ class XMLAgent_Agents implements INode {
for (const tool of res.usedTools) {
const inputTool = inputTools.find((inputTool: Tool) => inputTool.name === tool.tool)
if (inputTool && inputTool.returnDirect) {
options.socketIO.to(options.socketIOClientId).emit('token', tool.toolOutput)
if (sseStreamer) {
sseStreamer.streamTokenEvent(chatId, tool.toolOutput)
}
}
}
}