diegofcornejo

const { Client, Intents } = require('discord.js');
// const client = new Client({ intents: [Intents.FLAGS.GUILDS, Intents.FLAGS.GUILD_MEMBERS] });
const client = new Client({ intents: [Intents.FLAGS.GUILD_MEMBERS] });

client.on('ready', () => {
  console.log(`Logged in as ${client.user.tag}!`);
  const guild = client.guilds.cache.get('GUILD_ID');

  // Fetch and get the list named 'members'
  guild.members.fetch().then(members => {

diegofcornejo

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

diegofcornejo

#!/bin/bash
REPO="your-repo"
OWNER="diegofcornejo"
TOKEN="github_developer_token"
APPDIR="/home/ec2-user"
NODE_VERSION="12.16.3"
cd $APPDIR
touch init.log
echo 'Updating OS' >> init.log
yum update -y

diegofcornejo

const AWS = require('aws-sdk');
const REGION = 'us-east-1';
const DYNAMODB = new AWS.DynamoDB.DocumentClient();
const TABLE = "ttn-events";

exports.handler = async(event) => {
    var date = new Date();
    //dates should be obtained from request
    var end = date.toISOString();
    var start = new Date(date.setDate(date.getDate()-7)).toISOString();

diegofcornejo

https://dba010.com/2019/09/30/simpe-java-code-to-test-connection-to-oracle-database/

Assuming that client computer does not have Oracle client installed.

1. Download necessary version of ojdbc jar file from Oracle. The latest version for now is ojdbc8.jar

2. Install java development tools:

# yum install java-devel * -y
3. Create a sample java code, which:

diegofcornejo

Download Image
docker pull store/oracle/weblogic:12.2.1.3-dev-190111
or
docker pull store/oracle/weblogic:12.2.1.4-dev-200117

Create properties file
touch domain.properties

The format of the domain.properties file is key value pair:
username=weblogic

diegofcornejo

var request = require('request');
var order = {
    "foo":"bar"
}
order = JSON.stringify(order);
var xml = `<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:api="https://diegocornejo.com/">
<soap:Header/>
<soap:Body>
   <api:sendOrder>

diegofcornejo

const cors = fn => async (req, res) => {
    res.setHeader('Access-Control-Allow-Credentials', true)
    res.setHeader('Access-Control-Allow-Origin', '*')
    // another common pattern
    // res.setHeader('Access-Control-Allow-Origin', req.headers.origin);
    // res.setHeader('Access-Control-Allow-Methods', 'GET,OPTIONS,PATCH,DELETE,POST,PUT')
    res.setHeader('Access-Control-Allow-Methods', 'GET,OPTIONS')
    res.setHeader(
        'Access-Control-Allow-Headers',
        'X-CSRF-Token, X-Requested-With, Accept, Accept-Version, Content-Length, Content-MD5, Content-Type, Date, X-Api-Version'

diegofcornejo

//decoder

function buf2hex(buffer) { // buffer is an ArrayBuffer
  return [...new Uint8Array(buffer)]
      .map(x => x.toString(16).padStart(2, '0'))
      .join('');
}

let payload = 'YGUAALI=';
// let decoded = Buffer.from(payload, 'base64');

diegofcornejo

const express = require('express');
const app = express();
const port = 8844;
const fs = require('fs').promises;

const getFiles = (path) => {
    return fs.readdir(path);
}

const generateRoom = async (path, file) => {