clear session memory

packages/server/src/index.ts

@@ -39,7 +39,8 @@ import {
     isFlowValidForStream,
     isVectorStoreFaiss,
     databaseEntities,
-    getApiKey
+    getApiKey,
+    clearSessionMemory
 } from './utils'
 import { cloneDeep } from 'lodash'
 import { getDataSource } from './DataSource'
@@ -320,6 +321,19 @@ export class App {
 
         // Delete all chatmessages from chatflowid
         this.app.delete('/api/v1/chatmessage/:id', async (req: Request, res: Response) => {
+            const chatflow = await this.AppDataSource.getRepository(ChatFlow).findOneBy({
+                id: req.params.id
+            })
+            if (!chatflow) {
+                res.status(404).send(`Chatflow ${req.params.id} not found`)
+                return
+            }
+            const flowData = chatflow.flowData
+            const parsedFlowData: IReactFlowObject = JSON.parse(flowData)
+            const nodes = parsedFlowData.nodes
+            let chatId = await getChatId(chatflow.id)
+            if (!chatId) chatId = chatflow.id
+            clearSessionMemory(nodes, this.nodesPool.componentNodes, chatId, req.query.sessionId as string)
             const results = await this.AppDataSource.getRepository(ChatMessage).delete({ chatflowid: req.params.id })
             return res.json(results)
         })
@@ -662,7 +676,7 @@ export class App {
             if (!chatflow) return res.status(404).send(`Chatflow ${chatflowid} not found`)
 
             let chatId = await getChatId(chatflow.id)
-            if (!chatId) chatId = Date.now().toString()
+            if (!chatId) chatId = chatflowid
 
             if (!isInternal) {
                 await this.validateKey(req, res, chatflow)

packages/server/src/utils/index.ts

@@ -267,6 +267,29 @@ export const buildLangchain = async (
     return flowNodes
 }
 
+/**
+ * Clear memory
+ * @param {IReactFlowNode[]} reactFlowNodes
+ * @param {IComponentNodes} componentNodes
+ * @param {string} chatId
+ * @param {string} sessionId
+ */
+export const clearSessionMemory = async (
+    reactFlowNodes: IReactFlowNode[],
+    componentNodes: IComponentNodes,
+    chatId: string,
+    sessionId?: string
+) => {
+    for (const node of reactFlowNodes) {
+        if (node.data.category !== 'Memory') continue
+        const nodeInstanceFilePath = componentNodes[node.data.name].filePath as string
+        const nodeModule = await import(nodeInstanceFilePath)
+        const newNodeInstance = new nodeModule.nodeClass()
+        if (sessionId && node.data.inputs) node.data.inputs.sessionId = sessionId
+        if (newNodeInstance.clearSessionMemory) await newNodeInstance?.clearSessionMemory(node.data, { chatId })
+    }
+}
+
 /**
  * Get variable value from outputResponses.output
  * @param {string} paramValue