@n8n/n8n-nodes-langchain
Version:
93 lines • 3.47 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.MemoryChatRetriever = void 0;
const n8n_workflow_1 = require("n8n-workflow");
function simplifyMessages(messages) {
const chunkedMessages = [];
for (let i = 0; i < messages.length; i += 2) {
chunkedMessages.push([messages[i], messages[i + 1]]);
}
const transformedMessages = chunkedMessages.map((exchange) => {
const simplified = {
[exchange[0]._getType()]: exchange[0].content,
};
if (exchange[1]) {
simplified[exchange[1]._getType()] = exchange[1].content;
}
return {
json: simplified,
};
});
return transformedMessages;
}
class MemoryChatRetriever {
constructor() {
this.description = {
displayName: 'Chat Messages Retriever',
name: 'memoryChatRetriever',
icon: 'fa:database',
iconColor: 'black',
group: ['transform'],
hidden: true,
version: 1,
description: 'Retrieve chat messages from memory and use them in the workflow',
defaults: {
name: 'Chat Messages Retriever',
},
codex: {
categories: ['AI'],
subcategories: {
AI: ['Miscellaneous'],
},
resources: {
primaryDocumentation: [
{
url: 'https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.memorymanager/',
},
],
},
},
inputs: [
n8n_workflow_1.NodeConnectionTypes.Main,
{
displayName: 'Memory',
maxConnections: 1,
type: n8n_workflow_1.NodeConnectionTypes.AiMemory,
required: true,
},
],
outputs: [n8n_workflow_1.NodeConnectionTypes.Main],
properties: [
{
displayName: "This node is deprecated. Use 'Chat Memory Manager' node instead.",
type: 'notice',
default: '',
name: 'deprecatedNotice',
},
{
displayName: 'Simplify Output',
name: 'simplifyOutput',
type: 'boolean',
description: 'Whether to simplify the output to only include the sender and the text',
default: true,
},
],
};
}
async execute() {
this.logger.debug('Executing Chat Memory Retriever');
const memory = (await this.getInputConnectionData(n8n_workflow_1.NodeConnectionTypes.AiMemory, 0));
const simplifyOutput = this.getNodeParameter('simplifyOutput', 0);
const messages = await memory?.chatHistory.getMessages();
if (simplifyOutput && messages) {
return [simplifyMessages(messages)];
}
const serializedMessages = messages?.map((message) => {
const serializedMessage = message.toJSON();
return { json: serializedMessage };
}) ?? [];
return [serializedMessages];
}
}
exports.MemoryChatRetriever = MemoryChatRetriever;
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