obengwilliam

Check logs for healthchecks in a dockerfile

docker inspect --format "{{json .State.Health }}" <container name> | jq

obengwilliam

[Unit]
Description=Raddit application
After=network.target

[Service]
Type=simple
User=obeng
WorkingDirectory=/home/obeng/raddit
ExecStart=/bin/bash -lc 'puma'
Restart=always

obengwilliam

const R = require('ramda')
const assert = require('assert')

const body = '<h1>body</>'
const subject = '<h1> subject</h1>'

// function populateDefaults (profile) {
//   const cloneProfile = R.clone(profile)
//   if (!cloneProfile.template || !cloneProfile.template.products) {
//     console.log('No template or no products')

obengwilliam

auth with microservices

Authorization and Authentication are hard. when you only have to implement them once (as you do within a monolith) instead of over and over again, it makes the developer happy :-), and maybe leads to less implementation failures.

When you have a bunch of microservices, this is something that has to be considered.

Implement it once or in every microservice, or something in between?

obengwilliam

A few show tricks to find slow queries in mongodb

Enable profiling

First, you have to enable profiling

> db.setProfilingLevel(1)

Now let it run for a while. It collects the slow queries ( > 100ms) into a capped collections, so queries go in and if it's full, old queries go out, so don't be surprised that it's a moving target...

obengwilliam

sudo rabbitmqctl add_user {user} {password}
sudo rabbitmqctl set_user_tags {user} administrator
sudo rabbitmqctl set_permissions -p / {user} ".*" ".*" ".*"

obengwilliam

Here's an example of how to debug Mocha v4 if it hangs.

Ensure you're using a Node.js 8 or newer (or any version with async_hooks support).

If you run your test, you'll notice it hangs:

$ mocha test.js

obengwilliam

{
  pid: 93535,
  hostname: 'your host',
  level: 30,
  msg: 'my request',
  time: '2016-03-07T12:21:48.766Z',
  v: 0,
  req: {
    id: 42,
    method: 'GET',

obengwilliam

'use strict'

const {logOnRequest} = require('pino-wrapper')
const app = require('express')()

app.use(logOnRequest()) // should attach a log instance to req.log

obengwilliam

var request = require('supertest');
var fs = require('fs');

var reqData = {
  title: 'Rahh!',
  fileName: 'test-image.jpeg'
};

var req = request(context.app) //context.app = your express object
  .post('/v1/images')