Jose Abraham Garcia joseabraham

Code for an article about LangChain structured outputs.

Article: https://horosin.com/extracting-pdf-and-generating-json-data-with-gpts-langchain-and-nodejs

In this blog post, I will share how to use LangChain, a flexible framework for building AI-driven applications, to extract and generate structured JSON data with GPTs and Node.js. I'll provide code snippets and concise instructions to help you set up and run the project.

Steps for firing up a full Avalanche node

Avalanche is an open-source platform for launching highly decentralized applications, financial primitives, and interoperable blockchains.

These are steps for firing up an Avalanche full node on Digital Ocean.

Digital Ocean Ubuntu Instance

ssh into a Digital Ocean Ubuntu box

Calculate the average of Object properties

Here is our Object literal with some properties. What we need to do is calculate the average height of a set of people using JavaScript.

const data = {
  "Matt": { "height" : 176, "weight": 87 },
  "Jason": { "height" : 190, "weight": 103 },
  "Peter": { "height" : 180, "weight": 98 }
};

Notes

While researching possible Websocket vulnerabilities, I came across the "Cross Site WebSocket Hijacking" attack as documented here:

http://www.christian-schneider.net/CrossSiteWebSocketHijacking.html
https://www.notsosecure.com/how-cross-site-websocket-hijacking-could-lead-to-full-session-compromise/

TL;DR: Websockets, by spec, do not respect the browser's Same Origin Policy enforced for CORs and XHR requests. This means that a connection made in one browser tab can be hijacked in another browser tab similar to a typical XSS attack. In order to protect our services, we need to make sure that the Origin header matches the application's server name.

I've provided a nginx.conf file below that demonstrates how to check the Origin header. In addition to this config update, you'll also want to be sure to use a session token during your websocket handshake that is verified on the server for each connection. I suggest looking into JSON Web Tokens (JWT)

	# https://www.mongodb.com/docs/atlas/atlas-search/knn-beta/
	import pymongo
	from langchain.embeddings.openai import OpenAIEmbeddings
	from langchain.llms import AzureOpenAI
	import os
	from rake_nltk import Rake
	from langchain.agents import initialize_agent, Tool

	MONGO_URI = "mongodb+srv://....mongodb.net/?retryWrites=true&w=majority&tls=true"
	MONGODB_DATABASE = "demo_db"

	: '
	This script helps me to backup Dropbox business accounts. Requires rclone to be installed on your machine (https://rclone.org/downloads/).
	You must create a dropbox application (https://www.dropbox.com/developers/apps) with all READ scopes.
	Then configure your rclone using rclone config

	1) Choose dropbox
	2) Set your remote name
	3) On client_id, paste the value you have for "App key" on your Dropbox app (in settings)
	4) On client_secret, paste the value you have for "App secret" on your Dropbox app (in settings)
	5) Edit advanced config and set a value to the impersonate parameter (your admin account email e.g)

	import numpy as np
	import warnings
	from pandas_datareader import data as pdr
	import yfinance as yf
	import datetime as dt
	from yahoo_fin import stock_info as si
	import pandas as pd
	pd.set_option('display.max_rows', None)
	warnings.filterwarnings("ignore")
	yf.pdr_override()

	const aws = require('aws-sdk');
	const nodemailer = require('nodemailer');
	const mysql = require('mysql');
	const json2csv = require('json2csv').parse;
	const fs = require('fs');

	// create Nodemailer SES transporter
	var transporter = nodemailer.createTransport({
	SES: new aws.SES({
	apiVersion: '2010-12-01'

	#facebook marketplace
	from selenium import webdriver
	from time import sleep
	from selenium.webdriver.common.keys import Keys
	from selenium.webdriver.support.ui import WebDriverWait
	from selenium.webdriver.common.by import By
	from selenium.webdriver.support import expected_conditions as EC
	from pymongo import MongoClient

	class App: