change agent/chain with memory to use runnable

packages/components/nodes/memory/RedisBackedChatMemory/RedisBackedChatMemory.ts

@@ -1,15 +1,9 @@
-import { INode, INodeData, INodeParams, ICommonObject, IMessage, MessageType, FlowiseMemory, MemoryMethods } from '../../../src/Interface'
-import {
-    convertBaseMessagetoIMessage,
-    getBaseClasses,
-    getCredentialData,
-    getCredentialParam,
-    serializeChatHistory
-} from '../../../src/utils'
+import { Redis } from 'ioredis'
 import { BufferMemory, BufferMemoryInput } from 'langchain/memory'
 import { RedisChatMessageHistory, RedisChatMessageHistoryInput } from 'langchain/stores/message/ioredis'
 import { mapStoredMessageToChatMessage, BaseMessage, AIMessage, HumanMessage } from 'langchain/schema'
-import { Redis } from 'ioredis'
+import { INode, INodeData, INodeParams, ICommonObject, MessageType, IMessage, MemoryMethods, FlowiseMemory } from '../../../src/Interface'
+import { convertBaseMessagetoIMessage, getBaseClasses, getCredentialData, getCredentialParam } from '../../../src/utils'
 
 class RedisBackedChatMemory_Memory implements INode {
     label: string
@@ -44,7 +38,8 @@ class RedisBackedChatMemory_Memory implements INode {
                 label: 'Session Id',
                 name: 'sessionId',
                 type: 'string',
-                description: 'If not specified, the first CHAT_MESSAGE_ID will be used as sessionId',
+                description:
+                    'If not specified, a random id will be used. Learn <a target="_blank" href="https://docs.flowiseai.com/memory/long-term-memory#ui-and-embedded-chat">more</a>',
                 default: '',
                 additionalParams: true,
                 optional: true
@@ -78,47 +73,19 @@ class RedisBackedChatMemory_Memory implements INode {
     async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
         return await initalizeRedis(nodeData, options)
     }
-
-    //@ts-ignore
-    memoryMethods = {
-        async clearSessionMemory(nodeData: INodeData, options: ICommonObject): Promise<void> {
-            const redis = await initalizeRedis(nodeData, options)
-            const sessionId = nodeData.inputs?.sessionId as string
-            const chatId = options?.chatId as string
-            options.logger.info(`Clearing Redis memory session ${sessionId ? sessionId : chatId}`)
-            await redis.clear()
-            options.logger.info(`Successfully cleared Redis memory session ${sessionId ? sessionId : chatId}`)
-        },
-        async getChatMessages(nodeData: INodeData, options: ICommonObject): Promise<string> {
-            const memoryKey = nodeData.inputs?.memoryKey as string
-            const redis = await initalizeRedis(nodeData, options)
-            const key = memoryKey ?? 'chat_history'
-            const memoryResult = await redis.loadMemoryVariables({})
-            return serializeChatHistory(memoryResult[key])
-        }
-    }
 }
 
 const initalizeRedis = async (nodeData: INodeData, options: ICommonObject): Promise<BufferMemory> => {
     const sessionTTL = nodeData.inputs?.sessionTTL as number
     const memoryKey = nodeData.inputs?.memoryKey as string
+    const sessionId = nodeData.inputs?.sessionId as string
     const windowSize = nodeData.inputs?.windowSize as number
-    const chatId = options?.chatId as string
-
-    let isSessionIdUsingChatMessageId = false
-    let sessionId = ''
-
-    if (!nodeData.inputs?.sessionId && chatId) {
-        isSessionIdUsingChatMessageId = true
-        sessionId = chatId
-    } else {
-        sessionId = nodeData.inputs?.sessionId
-    }
 
     const credentialData = await getCredentialData(nodeData.credential ?? '', options)
     const redisUrl = getCredentialParam('redisUrl', credentialData, nodeData)
 
     let client: Redis
+
     if (!redisUrl || redisUrl === '') {
         const username = getCredentialParam('redisCacheUser', credentialData, nodeData)
         const password = getCredentialParam('redisCachePwd', credentialData, nodeData)
@@ -153,7 +120,7 @@ const initalizeRedis = async (nodeData: INodeData, options: ICommonObject): Prom
 
     const redisChatMessageHistory = new RedisChatMessageHistory(obj)
 
-    redisChatMessageHistory.getMessages = async (): Promise<BaseMessage[]> => {
+    /*redisChatMessageHistory.getMessages = async (): Promise<BaseMessage[]> => {
         const rawStoredMessages = await client.lrange((redisChatMessageHistory as any).sessionId, windowSize ? -windowSize : 0, -1)
         const orderedMessages = rawStoredMessages.reverse().map((message) => JSON.parse(message))
         return orderedMessages.map(mapStoredMessageToChatMessage)
@@ -169,44 +136,45 @@ const initalizeRedis = async (nodeData: INodeData, options: ICommonObject): Prom
 
     redisChatMessageHistory.clear = async (): Promise<void> => {
         await client.del((redisChatMessageHistory as any).sessionId)
-    }
+    }*/
 
     const memory = new BufferMemoryExtended({
         memoryKey: memoryKey ?? 'chat_history',
         chatHistory: redisChatMessageHistory,
-        isSessionIdUsingChatMessageId,
         sessionId,
+        windowSize,
         redisClient: client
     })
+
     return memory
 }
 
 interface BufferMemoryExtendedInput {
-    isSessionIdUsingChatMessageId: boolean
     redisClient: Redis
     sessionId: string
+    windowSize?: number
 }
 
 class BufferMemoryExtended extends FlowiseMemory implements MemoryMethods {
-    isSessionIdUsingChatMessageId? = false
     sessionId = ''
     redisClient: Redis
+    windowSize?: number
 
     constructor(fields: BufferMemoryInput & BufferMemoryExtendedInput) {
         super(fields)
-        this.isSessionIdUsingChatMessageId = fields.isSessionIdUsingChatMessageId
         this.sessionId = fields.sessionId
         this.redisClient = fields.redisClient
+        this.windowSize = fields.windowSize
     }
 
-    async getChatMessages(overrideSessionId = '', returnBaseMessage = false): Promise<IMessage[] | BaseMessage[]> {
+    async getChatMessages(overrideSessionId = '', returnBaseMessages = false): Promise<IMessage[] | BaseMessage[]> {
         if (!this.redisClient) return []
 
         const id = overrideSessionId ?? this.sessionId
-        const rawStoredMessages = await this.redisClient.lrange(id, 0, -1)
+        const rawStoredMessages = await this.redisClient.lrange(id, this.windowSize ? this.windowSize * -1 : 0, -1)
         const orderedMessages = rawStoredMessages.reverse().map((message) => JSON.parse(message))
         const baseMessages = orderedMessages.map(mapStoredMessageToChatMessage)
-        return returnBaseMessage ? baseMessages : convertBaseMessagetoIMessage(baseMessages)
+        return returnBaseMessages ? baseMessages : convertBaseMessagetoIMessage(baseMessages)
     }
 
     async addChatMessages(msgArray: { text: string; type: MessageType }[], overrideSessionId = ''): Promise<void> {
@@ -236,10 +204,6 @@ class BufferMemoryExtended extends FlowiseMemory implements MemoryMethods {
         await this.redisClient.del(id)
         await this.clear()
     }
-
-    async resumeMessages(): Promise<void> {
-        return
-    }
 }
 
 module.exports = { nodeClass: RedisBackedChatMemory_Memory }