From 198ae17016f8c8f5116330a0415214520c6561cd Mon Sep 17 00:00:00 2001
From: vinodkiran <vinodkiran@usa.net>
Date: Mon, 13 Nov 2023 21:46:36 +0530
Subject: [PATCH 1/4] MongoDB Atlas Integration: Adding MongoDB Memory

---
 .../credentials/MongoDBUrlApi.credential.ts   |  25 ++++
 .../memory/MongoDBMemory/MongoDBMemory.ts     | 115 ++++++++++++++++++
 .../nodes/memory/MongoDBMemory/mongodb.png    | Bin 0 -> 3741 bytes
 packages/components/package.json              |   1 +
 4 files changed, 141 insertions(+)
 create mode 100644 packages/components/credentials/MongoDBUrlApi.credential.ts
 create mode 100644 packages/components/nodes/memory/MongoDBMemory/MongoDBMemory.ts
 create mode 100644 packages/components/nodes/memory/MongoDBMemory/mongodb.png

diff --git a/packages/components/credentials/MongoDBUrlApi.credential.ts b/packages/components/credentials/MongoDBUrlApi.credential.ts
new file mode 100644
index 00000000000..2f2cba3834d
--- /dev/null
+++ b/packages/components/credentials/MongoDBUrlApi.credential.ts
@@ -0,0 +1,25 @@
+import { INodeParams, INodeCredential } from '../src/Interface'
+
+class MongoDBUrlApi implements INodeCredential {
+    label: string
+    name: string
+    version: number
+    description: string
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'MongoDB ATLAS'
+        this.name = 'mongoDBUrlApi'
+        this.version = 1.0
+        this.inputs = [
+            {
+                label: 'ATLAS Connection URL',
+                name: 'mongoDBConnectUrl',
+                type: 'string',
+                placeholder: 'mongodb+srv://myDatabaseUser:D1fficultP%40ssw0rd@cluster0.example.mongodb.net/?retryWrites=true&w=majority'
+            }
+        ]
+    }
+}
+
+module.exports = { credClass: MongoDBUrlApi }
diff --git a/packages/components/nodes/memory/MongoDBMemory/MongoDBMemory.ts b/packages/components/nodes/memory/MongoDBMemory/MongoDBMemory.ts
new file mode 100644
index 00000000000..4c9e8581ec0
--- /dev/null
+++ b/packages/components/nodes/memory/MongoDBMemory/MongoDBMemory.ts
@@ -0,0 +1,115 @@
+import { getBaseClasses, getCredentialData, getCredentialParam, ICommonObject, INode, INodeData, INodeParams } from '../../../src'
+import { MongoDBChatMessageHistory } from 'langchain/stores/message/mongodb'
+import { BufferMemory, BufferMemoryInput } from 'langchain/memory'
+import { MongoClient } from 'mongodb'
+
+class MongoDB_Memory implements INode {
+    label: string
+    name: string
+    version: number
+    description: string
+    type: string
+    icon: string
+    category: string
+    baseClasses: string[]
+    credential: INodeParams
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'MongoDB Atlas Chat Memory'
+        this.name = 'MongoDBAtlasChatMemory'
+        this.version = 1.0
+        this.type = 'MongoDBAtlasChatMemory'
+        this.icon = 'mongodb.png'
+        this.category = 'Memory'
+        this.description = 'Stores the conversation in MongoDB Atlas'
+        this.baseClasses = [this.type, ...getBaseClasses(BufferMemory)]
+        this.credential = {
+            label: 'Connect Credential',
+            name: 'credential',
+            type: 'credential',
+            credentialNames: ['mongoDBUrlApi']
+        }
+        this.inputs = [
+            {
+                label: 'Database',
+                name: 'databaseName',
+                placeholder: '<DB_NAME>',
+                type: 'string'
+            },
+            {
+                label: 'Collection Name',
+                name: 'collectionName',
+                placeholder: '<COLLECTION_NAME>',
+                type: 'string'
+            },
+            {
+                label: 'Session ID',
+                name: 'sessionId',
+                type: 'string',
+                default: '5f9cf7c08d5b1a06b80fae61',
+                description: 'Must be an Hex String of 24 chars. This will be the objectId of the document in MongoDB Atlas'
+            },
+            {
+                label: 'Memory Key',
+                name: 'memoryKey',
+                type: 'string',
+                default: 'chat_history',
+                additionalParams: true
+            }
+        ]
+    }
+
+    async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
+        return initializeMongoDB(nodeData, options)
+    }
+
+    async clearSessionMemory(nodeData: INodeData, options: ICommonObject): Promise<void> {
+        const mongodbMemory = await initializeMongoDB(nodeData, options)
+        const sessionId = nodeData.inputs?.sessionId as string
+        options.logger.info(`Clearing MongoDB memory session ${sessionId}`)
+        await mongodbMemory.clear()
+        options.logger.info(`Successfully cleared MongoDB memory session ${sessionId}`)
+    }
+}
+
+const initializeMongoDB = async (nodeData: INodeData, options: ICommonObject): Promise<BufferMemory> => {
+    const databaseName = nodeData.inputs?.databaseName as string
+    const collectionName = nodeData.inputs?.collectionName as string
+    const sessionId = nodeData.inputs?.sessionId as string
+    const memoryKey = nodeData.inputs?.memoryKey as string
+
+    const credentialData = await getCredentialData(nodeData.credential ?? '', options)
+    let mongoDBConnectUrl = getCredentialParam('mongoDBConnectUrl', credentialData, nodeData)
+
+    const client = new MongoClient(mongoDBConnectUrl)
+    await client.connect()
+    const collection = client.db(databaseName).collection(collectionName)
+
+    const mongoDBChatMessageHistory = new MongoDBChatMessageHistory({
+        collection,
+        sessionId: sessionId
+    })
+
+    return new BufferMemoryExtended({
+        memoryKey,
+        chatHistory: mongoDBChatMessageHistory,
+        returnMessages: true,
+        isSessionIdUsingChatMessageId: false
+    })
+}
+
+interface BufferMemoryExtendedInput {
+    isSessionIdUsingChatMessageId: boolean
+}
+
+class BufferMemoryExtended extends BufferMemory {
+    isSessionIdUsingChatMessageId? = false
+
+    constructor(fields: BufferMemoryInput & Partial<BufferMemoryExtendedInput>) {
+        super(fields)
+        this.isSessionIdUsingChatMessageId = fields.isSessionIdUsingChatMessageId
+    }
+}
+
+module.exports = { nodeClass: MongoDB_Memory }
diff --git a/packages/components/nodes/memory/MongoDBMemory/mongodb.png b/packages/components/nodes/memory/MongoDBMemory/mongodb.png
new file mode 100644
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diff --git a/packages/components/package.json b/packages/components/package.json
index 996419ca08e..ee2adbf9aba 100644
--- a/packages/components/package.json
+++ b/packages/components/package.json
@@ -55,6 +55,7 @@
         "llmonitor": "^0.5.5",
         "mammoth": "^1.5.1",
         "moment": "^2.29.3",
+        "mongodb": "^6.2.0",
         "mysql2": "^3.5.1",
         "node-fetch": "^2.6.11",
         "node-html-markdown": "^1.3.0",

From 26c86f1b371c3968293387b957beba3cf89a7b7c Mon Sep 17 00:00:00 2001
From: vinodkiran <vinodkiran@usa.net>
Date: Mon, 13 Nov 2023 21:56:18 +0530
Subject: [PATCH 2/4] MongoDB Atlas Integration: Adding MongoDB as a Vector
 Store

---
 .../vectorstores/MongoDB/MongoDBSearchBase.ts | 145 ++++++++++++++++++
 .../vectorstores/MongoDB/MongoDB_Existing.ts  |  41 +++++
 .../vectorstores/MongoDB/MongoDB_Upsert.ts    |  58 +++++++
 .../nodes/vectorstores/MongoDB/mongodb.png    | Bin 0 -> 3741 bytes
 4 files changed, 244 insertions(+)
 create mode 100644 packages/components/nodes/vectorstores/MongoDB/MongoDBSearchBase.ts
 create mode 100644 packages/components/nodes/vectorstores/MongoDB/MongoDB_Existing.ts
 create mode 100644 packages/components/nodes/vectorstores/MongoDB/MongoDB_Upsert.ts
 create mode 100644 packages/components/nodes/vectorstores/MongoDB/mongodb.png

diff --git a/packages/components/nodes/vectorstores/MongoDB/MongoDBSearchBase.ts b/packages/components/nodes/vectorstores/MongoDB/MongoDBSearchBase.ts
new file mode 100644
index 00000000000..e9ef8e9a164
--- /dev/null
+++ b/packages/components/nodes/vectorstores/MongoDB/MongoDBSearchBase.ts
@@ -0,0 +1,145 @@
+import {
+    getBaseClasses,
+    getCredentialData,
+    getCredentialParam,
+    ICommonObject,
+    INodeData,
+    INodeOutputsValue,
+    INodeParams
+} from '../../../src'
+
+import { Embeddings } from 'langchain/embeddings/base'
+import { VectorStore } from 'langchain/vectorstores/base'
+import { Document } from 'langchain/document'
+import { MongoDBAtlasVectorSearch } from 'langchain/vectorstores/mongodb_atlas'
+import { Collection, MongoClient } from 'mongodb'
+
+export abstract class MongoDBSearchBase {
+    label: string
+    name: string
+    version: number
+    description: string
+    type: string
+    icon: string
+    category: string
+    baseClasses: string[]
+    inputs: INodeParams[]
+    credential: INodeParams
+    outputs: INodeOutputsValue[]
+    mongoClient: MongoClient
+
+    protected constructor() {
+        this.type = 'MongoDB Atlas'
+        this.icon = 'mongodb.png'
+        this.category = 'Vector Stores'
+        this.baseClasses = [this.type, 'VectorStoreRetriever', 'BaseRetriever']
+        this.credential = {
+            label: 'Connect Credential',
+            name: 'credential',
+            type: 'credential',
+            credentialNames: ['mongoDBUrlApi']
+        }
+        this.inputs = [
+            {
+                label: 'Embeddings',
+                name: 'embeddings',
+                type: 'Embeddings'
+            },
+            {
+                label: 'Database',
+                name: 'databaseName',
+                placeholder: '<DB_NAME>',
+                type: 'string'
+            },
+            {
+                label: 'Collection Name',
+                name: 'collectionName',
+                placeholder: '<COLLECTION_NAME>',
+                type: 'string'
+            },
+            {
+                label: 'Index Name',
+                name: 'indexName',
+                placeholder: '<VECTOR_INDEX_NAME>',
+                type: 'string'
+            },
+            {
+                label: 'Content Field',
+                name: 'textKey',
+                description: 'Name of the field (column) that contains the actual content',
+                type: 'string',
+                default: 'text',
+                additionalParams: true,
+                optional: true
+            },
+            {
+                label: 'Embedded Field',
+                name: 'embeddingKey',
+                description: 'Name of the field (column) that contains the Embedding',
+                type: 'string',
+                default: 'embedding',
+                additionalParams: true,
+                optional: true
+            },
+            {
+                label: 'Top K',
+                name: 'topK',
+                description: 'Number of top results to fetch. Default to 4',
+                placeholder: '4',
+                type: 'number',
+                additionalParams: true,
+                optional: true
+            }
+        ]
+        this.outputs = [
+            {
+                label: 'MongoDB Retriever',
+                name: 'retriever',
+                baseClasses: this.baseClasses
+            },
+            {
+                label: 'MongoDB Vector Store',
+                name: 'vectorStore',
+                baseClasses: [this.type, ...getBaseClasses(MongoDBAtlasVectorSearch)]
+            }
+        ]
+    }
+
+    abstract constructVectorStore(
+        embeddings: Embeddings,
+        collection: Collection,
+        indexName: string,
+        textKey: string,
+        embeddingKey: string,
+        docs: Document<Record<string, any>>[] | undefined
+    ): Promise<VectorStore>
+
+    async init(nodeData: INodeData, _: string, options: ICommonObject, docs: Document<Record<string, any>>[] | undefined): Promise<any> {
+        const credentialData = await getCredentialData(nodeData.credential ?? '', options)
+        const databaseName = nodeData.inputs?.databaseName as string
+        const collectionName = nodeData.inputs?.collectionName as string
+        const indexName = nodeData.inputs?.indexName as string
+        let textKey = nodeData.inputs?.textKey as string
+        let embeddingKey = nodeData.inputs?.embeddingKey as string
+        const embeddings = nodeData.inputs?.embeddings as Embeddings
+        const topK = nodeData.inputs?.topK as string
+        const k = topK ? parseFloat(topK) : 4
+        const output = nodeData.outputs?.output as string
+
+        let mongoDBConnectUrl = getCredentialParam('mongoDBConnectUrl', credentialData, nodeData)
+
+        this.mongoClient = new MongoClient(mongoDBConnectUrl)
+        const collection = this.mongoClient.db(databaseName).collection(collectionName)
+        if (!textKey || textKey === '') textKey = 'text'
+        if (!embeddingKey || embeddingKey === '') embeddingKey = 'embedding'
+        const vectorStore = await this.constructVectorStore(embeddings, collection, indexName, textKey, embeddingKey, docs)
+
+        if (output === 'retriever') {
+            return vectorStore.asRetriever(k)
+        } else if (output === 'vectorStore') {
+            ;(vectorStore as any).k = k
+            return vectorStore
+        }
+        return vectorStore
+    }
+}
diff --git a/packages/components/nodes/vectorstores/MongoDB/MongoDB_Existing.ts b/packages/components/nodes/vectorstores/MongoDB/MongoDB_Existing.ts
new file mode 100644
index 00000000000..3cbb36b8790
--- /dev/null
+++ b/packages/components/nodes/vectorstores/MongoDB/MongoDB_Existing.ts
@@ -0,0 +1,41 @@
+import { ICommonObject, INode, INodeData } from '../../../src/Interface'
+import { Embeddings } from 'langchain/embeddings/base'
+import { VectorStore } from 'langchain/vectorstores/base'
+import { Document } from 'langchain/document'
+
+import { MongoDBSearchBase } from './MongoDBSearchBase'
+import { Collection } from 'mongodb'
+import { MongoDBAtlasVectorSearch } from 'langchain/vectorstores/mongodb_atlas'
+
+class MongoDBExisting_VectorStores extends MongoDBSearchBase implements INode {
+    constructor() {
+        super()
+        this.label = 'MongoDB Atlas Load Existing Index'
+        this.name = 'MongoDBIndex'
+        this.version = 1.0
+        this.description = 'Load existing data from MongoDB Atlas (i.e: Document has been upserted)'
+    }
+
+    async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
+        return super.init(nodeData, _, options, undefined)
+    }
+
+    constructVectorStore(
+        embeddings: Embeddings,
+        collection: Collection,
+        indexName: string,
+        textKey: string,
+        embeddingKey: string,
+        _: Document<Record<string, any>>[] | undefined
+    ): Promise<VectorStore> {
+        const mongoDBAtlasVectorSearch = new MongoDBAtlasVectorSearch(embeddings, {
+            collection: collection,
+            indexName: indexName,
+            textKey: textKey,
+            embeddingKey: embeddingKey
+        })
+        return Promise.resolve(mongoDBAtlasVectorSearch)
+    }
+}
+
+module.exports = { nodeClass: MongoDBExisting_VectorStores }
diff --git a/packages/components/nodes/vectorstores/MongoDB/MongoDB_Upsert.ts b/packages/components/nodes/vectorstores/MongoDB/MongoDB_Upsert.ts
new file mode 100644
index 00000000000..80dfbf19522
--- /dev/null
+++ b/packages/components/nodes/vectorstores/MongoDB/MongoDB_Upsert.ts
@@ -0,0 +1,58 @@
+import { ICommonObject, INode, INodeData } from '../../../src/Interface'
+import { Embeddings } from 'langchain/embeddings/base'
+import { Document } from 'langchain/document'
+
+import { flatten } from 'lodash'
+import { VectorStore } from 'langchain/vectorstores/base'
+import { MongoDBSearchBase } from './MongoDBSearchBase'
+import { Collection } from 'mongodb'
+import { MongoDBAtlasVectorSearch } from 'langchain/vectorstores/mongodb_atlas'
+
+class MongoDBUpsert_VectorStores extends MongoDBSearchBase implements INode {
+    constructor() {
+        super()
+        this.label = 'MongoDB Upsert Document'
+        this.name = 'MongoDBUpsert'
+        this.version = 1.0
+        this.description = 'Upsert documents to MongoDB Atlas'
+        this.inputs.unshift({
+            label: 'Document',
+            name: 'document',
+            type: 'Document',
+            list: true
+        })
+    }
+
+    constructVectorStore(
+        embeddings: Embeddings,
+        collection: Collection,
+        indexName: string,
+        textKey: string,
+        embeddingKey: string,
+        docs: Document<Record<string, any>>[]
+    ): Promise<VectorStore> {
+        return MongoDBAtlasVectorSearch.fromDocuments(docs, embeddings, {
+            collection: collection,
+            indexName: indexName,
+            textKey: textKey,
+            embeddingKey: embeddingKey
+        })
+    }
+
+    async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
+        const docs = nodeData.inputs?.document as Document[]
+
+        const flattenDocs = docs && docs.length ? flatten(docs) : []
+        const finalDocs = []
+        for (let i = 0; i < flattenDocs.length; i += 1) {
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                const document = new Document(flattenDocs[i])
+                finalDocs.push(document)
+            }
+        }
+
+        return super.init(nodeData, _, options, flattenDocs)
+    }
+}
+
+module.exports = { nodeClass: MongoDBUpsert_VectorStores }
diff --git a/packages/components/nodes/vectorstores/MongoDB/mongodb.png b/packages/components/nodes/vectorstores/MongoDB/mongodb.png
new file mode 100644
index 0000000000000000000000000000000000000000..5586fe0ac672f7997014d814389c1d6c436d9d0c
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From df249ec3f0ee2549ebc106036bc2ddf1986a1971 Mon Sep 17 00:00:00 2001
From: Henry <hzj94@hotmail.com>
Date: Fri, 17 Nov 2023 13:52:41 +0000
Subject: [PATCH 3/4] fix mongodb vector database where no documents are
 returned

---
 .../Elasticsearch/Elasticsearch_Upsert.ts       |  2 +-
 .../vectorstores/MongoDB/MongoDB_Existing.ts    | 12 +++++-------
 .../vectorstores/MongoDB/MongoDB_Upsert.ts      | 17 +++++++++--------
 .../nodes/vectorstores/Redis/Redis_Upsert.ts    |  2 +-
 4 files changed, 16 insertions(+), 17 deletions(-)

diff --git a/packages/components/nodes/vectorstores/Elasticsearch/Elasticsearch_Upsert.ts b/packages/components/nodes/vectorstores/Elasticsearch/Elasticsearch_Upsert.ts
index d396578654e..a8ccd49acfb 100644
--- a/packages/components/nodes/vectorstores/Elasticsearch/Elasticsearch_Upsert.ts
+++ b/packages/components/nodes/vectorstores/Elasticsearch/Elasticsearch_Upsert.ts
@@ -50,7 +50,7 @@ class ElasicsearchUpsert_VectorStores extends ElasticSearchBase implements INode
             delete d.metadata.loc
         })
         // end of workaround
-        return super.init(nodeData, _, options, flattenDocs)
+        return super.init(nodeData, _, options, finalDocs)
     }
 }
 
diff --git a/packages/components/nodes/vectorstores/MongoDB/MongoDB_Existing.ts b/packages/components/nodes/vectorstores/MongoDB/MongoDB_Existing.ts
index 3cbb36b8790..7b06814afeb 100644
--- a/packages/components/nodes/vectorstores/MongoDB/MongoDB_Existing.ts
+++ b/packages/components/nodes/vectorstores/MongoDB/MongoDB_Existing.ts
@@ -1,11 +1,10 @@
-import { ICommonObject, INode, INodeData } from '../../../src/Interface'
+import { Collection } from 'mongodb'
+import { MongoDBAtlasVectorSearch } from 'langchain/vectorstores/mongodb_atlas'
 import { Embeddings } from 'langchain/embeddings/base'
 import { VectorStore } from 'langchain/vectorstores/base'
 import { Document } from 'langchain/document'
-
 import { MongoDBSearchBase } from './MongoDBSearchBase'
-import { Collection } from 'mongodb'
-import { MongoDBAtlasVectorSearch } from 'langchain/vectorstores/mongodb_atlas'
+import { ICommonObject, INode, INodeData } from '../../../src/Interface'
 
 class MongoDBExisting_VectorStores extends MongoDBSearchBase implements INode {
     constructor() {
@@ -20,7 +19,7 @@ class MongoDBExisting_VectorStores extends MongoDBSearchBase implements INode {
         return super.init(nodeData, _, options, undefined)
     }
 
-    constructVectorStore(
+    async constructVectorStore(
         embeddings: Embeddings,
         collection: Collection,
         indexName: string,
@@ -28,13 +27,12 @@ class MongoDBExisting_VectorStores extends MongoDBSearchBase implements INode {
         embeddingKey: string,
         _: Document<Record<string, any>>[] | undefined
     ): Promise<VectorStore> {
-        const mongoDBAtlasVectorSearch = new MongoDBAtlasVectorSearch(embeddings, {
+        return new MongoDBAtlasVectorSearch(embeddings, {
             collection: collection,
             indexName: indexName,
             textKey: textKey,
             embeddingKey: embeddingKey
         })
-        return Promise.resolve(mongoDBAtlasVectorSearch)
     }
 }
 
diff --git a/packages/components/nodes/vectorstores/MongoDB/MongoDB_Upsert.ts b/packages/components/nodes/vectorstores/MongoDB/MongoDB_Upsert.ts
index 80dfbf19522..7d22f03526f 100644
--- a/packages/components/nodes/vectorstores/MongoDB/MongoDB_Upsert.ts
+++ b/packages/components/nodes/vectorstores/MongoDB/MongoDB_Upsert.ts
@@ -1,12 +1,11 @@
-import { ICommonObject, INode, INodeData } from '../../../src/Interface'
+import { flatten } from 'lodash'
+import { Collection } from 'mongodb'
 import { Embeddings } from 'langchain/embeddings/base'
 import { Document } from 'langchain/document'
-
-import { flatten } from 'lodash'
 import { VectorStore } from 'langchain/vectorstores/base'
-import { MongoDBSearchBase } from './MongoDBSearchBase'
-import { Collection } from 'mongodb'
 import { MongoDBAtlasVectorSearch } from 'langchain/vectorstores/mongodb_atlas'
+import { ICommonObject, INode, INodeData } from '../../../src/Interface'
+import { MongoDBSearchBase } from './MongoDBSearchBase'
 
 class MongoDBUpsert_VectorStores extends MongoDBSearchBase implements INode {
     constructor() {
@@ -23,7 +22,7 @@ class MongoDBUpsert_VectorStores extends MongoDBSearchBase implements INode {
         })
     }
 
-    constructVectorStore(
+    async constructVectorStore(
         embeddings: Embeddings,
         collection: Collection,
         indexName: string,
@@ -31,12 +30,14 @@ class MongoDBUpsert_VectorStores extends MongoDBSearchBase implements INode {
         embeddingKey: string,
         docs: Document<Record<string, any>>[]
     ): Promise<VectorStore> {
-        return MongoDBAtlasVectorSearch.fromDocuments(docs, embeddings, {
+        const mongoDBAtlasVectorSearch = new MongoDBAtlasVectorSearch(embeddings, {
             collection: collection,
             indexName: indexName,
             textKey: textKey,
             embeddingKey: embeddingKey
         })
+        await mongoDBAtlasVectorSearch.addDocuments(docs)
+        return mongoDBAtlasVectorSearch
     }
 
     async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
@@ -51,7 +52,7 @@ class MongoDBUpsert_VectorStores extends MongoDBSearchBase implements INode {
             }
         }
 
-        return super.init(nodeData, _, options, flattenDocs)
+        return super.init(nodeData, _, options, finalDocs)
     }
 }
 
diff --git a/packages/components/nodes/vectorstores/Redis/Redis_Upsert.ts b/packages/components/nodes/vectorstores/Redis/Redis_Upsert.ts
index 9d1a4f4534e..4da58eaffbc 100644
--- a/packages/components/nodes/vectorstores/Redis/Redis_Upsert.ts
+++ b/packages/components/nodes/vectorstores/Redis/Redis_Upsert.ts
@@ -56,7 +56,7 @@ class RedisUpsert_VectorStores extends RedisSearchBase implements INode {
             }
         }
 
-        return super.init(nodeData, _, options, flattenDocs)
+        return super.init(nodeData, _, options, finalDocs)
     }
 }
 

From 0c81b194c3dd72f6d9ae78da5d00e6a785afe7dc Mon Sep 17 00:00:00 2001
From: Henry <hzj94@hotmail.com>
Date: Fri, 17 Nov 2023 14:38:42 +0000
Subject: [PATCH 4/4] changed to enable uuid to be used as sessionId

---
 .../memory/MongoDBMemory/MongoDBMemory.ts     | 45 ++++++++++++++++---
 1 file changed, 38 insertions(+), 7 deletions(-)

diff --git a/packages/components/nodes/memory/MongoDBMemory/MongoDBMemory.ts b/packages/components/nodes/memory/MongoDBMemory/MongoDBMemory.ts
index 4c9e8581ec0..7de2ec34788 100644
--- a/packages/components/nodes/memory/MongoDBMemory/MongoDBMemory.ts
+++ b/packages/components/nodes/memory/MongoDBMemory/MongoDBMemory.ts
@@ -1,6 +1,7 @@
 import { getBaseClasses, getCredentialData, getCredentialParam, ICommonObject, INode, INodeData, INodeParams } from '../../../src'
 import { MongoDBChatMessageHistory } from 'langchain/stores/message/mongodb'
 import { BufferMemory, BufferMemoryInput } from 'langchain/memory'
+import { BaseMessage, mapStoredMessageToChatMessage } from 'langchain/schema'
 import { MongoClient } from 'mongodb'
 
 class MongoDB_Memory implements INode {
@@ -44,11 +45,13 @@ class MongoDB_Memory implements INode {
                 type: 'string'
             },
             {
-                label: 'Session ID',
+                label: 'Session Id',
                 name: 'sessionId',
                 type: 'string',
-                default: '5f9cf7c08d5b1a06b80fae61',
-                description: 'Must be an Hex String of 24 chars. This will be the objectId of the document in MongoDB Atlas'
+                description: 'If not specified, the first CHAT_MESSAGE_ID will be used as sessionId',
+                default: '',
+                additionalParams: true,
+                optional: true
             },
             {
                 label: 'Memory Key',
@@ -67,9 +70,10 @@ class MongoDB_Memory implements INode {
     async clearSessionMemory(nodeData: INodeData, options: ICommonObject): Promise<void> {
         const mongodbMemory = await initializeMongoDB(nodeData, options)
         const sessionId = nodeData.inputs?.sessionId as string
-        options.logger.info(`Clearing MongoDB memory session ${sessionId}`)
+        const chatId = options?.chatId as string
+        options.logger.info(`Clearing MongoDB memory session ${sessionId ? sessionId : chatId}`)
         await mongodbMemory.clear()
-        options.logger.info(`Successfully cleared MongoDB memory session ${sessionId}`)
+        options.logger.info(`Successfully cleared MongoDB memory session ${sessionId ? sessionId : chatId}`)
     }
 }
 
@@ -78,6 +82,10 @@ const initializeMongoDB = async (nodeData: INodeData, options: ICommonObject): P
     const collectionName = nodeData.inputs?.collectionName as string
     const sessionId = nodeData.inputs?.sessionId as string
     const memoryKey = nodeData.inputs?.memoryKey as string
+    const chatId = options?.chatId as string
+
+    let isSessionIdUsingChatMessageId = false
+    if (!sessionId && chatId) isSessionIdUsingChatMessageId = true
 
     const credentialData = await getCredentialData(nodeData.credential ?? '', options)
     let mongoDBConnectUrl = getCredentialParam('mongoDBConnectUrl', credentialData, nodeData)
@@ -88,14 +96,37 @@ const initializeMongoDB = async (nodeData: INodeData, options: ICommonObject): P
 
     const mongoDBChatMessageHistory = new MongoDBChatMessageHistory({
         collection,
-        sessionId: sessionId
+        sessionId: sessionId ? sessionId : chatId
     })
 
+    mongoDBChatMessageHistory.getMessages = async (): Promise<BaseMessage[]> => {
+        const document = await collection.findOne({
+            sessionId: (mongoDBChatMessageHistory as any).sessionId
+        })
+        const messages = document?.messages || []
+        return messages.map(mapStoredMessageToChatMessage)
+    }
+
+    mongoDBChatMessageHistory.addMessage = async (message: BaseMessage): Promise<void> => {
+        const messages = [message].map((msg) => msg.toDict())
+        await collection.updateOne(
+            { sessionId: (mongoDBChatMessageHistory as any).sessionId },
+            {
+                $push: { messages: { $each: messages } }
+            },
+            { upsert: true }
+        )
+    }
+
+    mongoDBChatMessageHistory.clear = async (): Promise<void> => {
+        await collection.deleteOne({ sessionId: (mongoDBChatMessageHistory as any).sessionId })
+    }
+
     return new BufferMemoryExtended({
         memoryKey,
         chatHistory: mongoDBChatMessageHistory,
         returnMessages: true,
-        isSessionIdUsingChatMessageId: false
+        isSessionIdUsingChatMessageId
     })
 }