tsmx

Counter: React component for animated counting up

Small React component for counting numbers up to a certain value in a specified duration in ms. Useful for creating animated dashboards etc.

Usage

<Counter countFrom={0} countTo={123} durationMs={400}/>

tsmx

GCP Compute Engine instance template creation with multiple NIC's and health-check FW rule

An instance template with more than one NIC obviously can't be created in the GCP web console. But it could easily be achieved using the gcloud CLI with consecutive --network-interface options.

gcloud compute --project=YOUR_PROJECT instance-templates create multi-nic-vm-template --machine-type=e2-micro --network-interface=subnet=projects/YOUR_PROJECT/regions/europe-west3/subnetworks/my-subnet-1,no-address --network-interface=subnet=projects/YOUR_PROJECT/regions/europe-west3/subnetworks/my-subnet-2,no-address --maintenance-policy=MIGRATE --image=my-image-1 --image-project=YOUR_PROJECT --boot-disk-size=10GB --boot-disk-type=pd-standard --boot-disk-device-name=instance-template-1 --no-shielded-secure-boot --shielded-vtpm --shielded-integrity-monitoring --reservation-affinity=any --tags=allow-health-check

In this example I specified two subnets that belong to different VPC's.

tsmx

# save as ./github/workflows/git-ci-build.yml
# make sure that 'test-coverage' generates the coverage reports (lcov)

name: git-ci-build

on:
  [push]

jobs:
  build:

tsmx

function isOdd(x) {
    return new Promise((resolve, reject) => {
        if (x == 11) throw new Error('11 is not allowed!');
        if (x % 2) {
            resolve(x.toString() + ' is odd')
        }
        else {
            reject(new Error(x.toString() + ' is even'));
        }
    });

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git rm -r --cached .
git add .

tsmx

const got = require('got');
const stream = require('stream');
const fs = require('fs');
const { promisify } = require('util');
const pipeline = promisify(stream.pipeline);

// instantiate the download stream - use options to set authorization header etc. if needed 
let downStream = got.stream('https://example.com/download');

downStream.on('response', response => {

tsmx

const got = require('got');

// get 'url' and 'token'...

got.get(url), {
  responseType: 'json',
  hooks: {
    beforeRequest: [
      options => {
        options.headers['Authorization'] = 'Bearer ' + token;

tsmx

#!/bin/bash

# set URL to test here
url=YOUR_URL_HERE

# set test iterations here: requests|concurrent
declare -a iterations=("1|1" "10|10" "100|20" "100|100" "1000|50" "1000|100")

# first argument is the bearer token
if [ -z "$1" ]

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const crypto = require('crypto');

const algorithm = 'aes-256-cbc';
const dbURI = 'mongodb://localhost/encryptiontest';
const dbOptions = {
    user: 'encryptiontest',
    pass: 'test',
    useNewUrlParser: true,
    useCreateIndex: true,
    useFindAndModify: false,

tsmx

function jsonToHtmlList(obj, level = 0) {
    if (level == 0) {
        console.log('<ul>');
    }
    else {
        console.log(('  ').repeat(level) + '<ul class=\"nested\">');
    }
    Object.entries(obj).forEach(([key, val]) => {
        if (val !== null && typeof val == 'object' && !Array.isArray(val)) {
            console.log(('  ').repeat(level) + ' <li class=\"caret\">Key: ' + key + '</li>')