add DynamoDB Memory init

packages/components/nodes/memory/DynamoDBMemory/DynamoDBMemory.ts

@@ -0,0 +1,50 @@
+import { INode, INodeData, INodeParams } from '../../../src/Interface'
+import { getBaseClasses } from '../../../src/utils'
+import { BufferMemory } from 'langchain/memory'
+
+class DynamoDBMemory_Memory implements INode {
+    label: string
+    name: string
+    description: string
+    type: string
+    icon: string
+    category: string
+    baseClasses: string[]
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'DynamoDB Memory'
+        this.name = 'dynamoDBMemory'
+        this.type = 'DynamoDBMemory'
+        this.icon = 'memory.svg'
+        this.category = 'Memory'
+        this.description = 'Remembers previous conversational back and forths directly'
+        this.baseClasses = [this.type, ...getBaseClasses(BufferMemory)]
+        this.inputs = [
+            {
+                label: 'Memory Key',
+                name: 'memoryKey',
+                type: 'string',
+                default: 'chat_history'
+            },
+            {
+                label: 'Input Key',
+                name: 'inputKey',
+                type: 'string',
+                default: 'input'
+            }
+        ]
+    }
+
+    async init(nodeData: INodeData): Promise<any> {
+        const memoryKey = nodeData.inputs?.memoryKey as string
+        const inputKey = nodeData.inputs?.inputKey as string
+        return new BufferMemory({
+            returnMessages: true,
+            memoryKey,
+            inputKey
+        })
+    }
+}
+
+module.exports = { nodeClass: DynamoDBMemory_Memory }

packages/components/nodes/memory/DynamoDBMemory/brand-aws.svg

@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-brand-aws" width="24" height="24" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
+   <path stroke="none" d="M0 0h24v24H0z" fill="none"></path>
+   <path d="M17 18.5a15.198 15.198 0 0 1 -7.37 1.44a14.62 14.62 0 0 1 -6.63 -2.94"></path>
+   <path d="M19.5 21c.907 -1.411 1.451 -3.323 1.5 -5c-1.197 -.773 -2.577 -.935 -4 -1"></path>
+   <path d="M3 11v-4.5a1.5 1.5 0 0 1 3 0v4.5"></path>
+   <path d="M3 9h3"></path>
+   <path d="M9 5l1.2 6l1.8 -4l1.8 4l1.2 -6"></path>
+   <path d="M18 10.25c0 .414 .336 .75 .75 .75h1.25a1 1 0 0 0 1 -1v-1a1 1 0 0 0 -1 -1h-1a1 1 0 0 1 -1 -1v-1a1 1 0 0 1 1 -1h1.25a.75 .75 0 0 1 .75 .75"></path>
+</svg>

packages/components/package.json

@@ -16,6 +16,7 @@
     },
     "license": "SEE LICENSE IN LICENSE.md",
     "dependencies": {
+        "@aws-sdk/client-dynamodb": "^3.338.0",
         "@dqbd/tiktoken": "^1.0.7",
         "@huggingface/inference": "1",
         "@pinecone-database/pinecone": "^0.0.12",