johnallen3d

Heroku and CI/CD

Heroku Overview

• Founded ~10 years ago with support for Rails

• Purchased by SalesForce in 2010

• Heroku Platform as a Service (PaaS) vs AWS Infrastructure as a Service (IaaS)

• Fully managed app deployment and hosting

johnallen3d

version: '2.3'
services:
  web:
    image: kong:latest
    links:
      - db
    environment:
      - "KONG_DATABASE=postgres"
      - "KONG_PG_HOST=db"
      - "KONG_PROXY_ACCESS_LOG=/dev/stdout"

johnallen3d

Continuous Integration (CI) and
Continuous Delivery (CD)

Background reading

CI

Regular automated builds and testing of a code base. We are using CircleCI to facilitate CI (and sometimes CD, see Container Runtime).

johnallen3d

nib plugins

nib

• nib is a convenience wrapper for docker-compose
• originally designed with Ruby/Rails developers in mind but has features that would be helpful for any developer

Plugin Architecture

nib is pluggable via additional gems. The plugin system is loosely based on that of minitest extensions. There are three requirements for a nib plugin:

johnallen3d

Keybase proof

I hereby claim:

• I am johnallen3d on github.
• I am jallen7usa (https://keybase.io/jallen7usa) on keybase.
• I have a public key ASDCDcjmAy4Vb3T0p_HRhEjrt9loW4vL1kDaNk0C34o4hAo

To claim this, I am signing this object:

johnallen3d

class ApplicationController < ActionController::Base
  # Prevent CSRF attacks by raising an exception.
  # For APIs, you may want to use :null_session instead.
  protect_from_forgery with: :exception

  def current_user=(user)
    session[:user_id] = user.uid
  end

  def current_user

johnallen3d

#!/bin/bash

PASSWORD=$1

if [[ $1 = '' ]]; then
  echo Please provide your spotinst password
  exit 1
fi

echo $PASSWORD

johnallen3d

A goal of the engineering team is to improve code quality and consistancy. One of the simplest ways to head in that direction is to start (or further) the use of RuboCop. If you're not farmiliar, RuboCop is a static Ruby code analyzer that use a common Ruby Style Guide as it's basis for enforcing standards. Once installed (it's just a gem) the RuboCop binary can be used as part of our development workflow to help enforce standards and consistancy on a change by change basis (with the help of Guard for example).

Realizing that some projects currently have a version of RuboCop setup and some do not at all we would like to take a gradual approach to introducing RuboCop. The idea would be to get RuboCop installed on an existing code base and then disable all of the cops that are not passing at the outset. From there we would spend a little time each week (or as you're naturally editing an existing piece of code) bringing things

johnallen3d

Process Substitution Error in IRB

simple example of process substitution in shell (bash)

> echo <(true)
/dev/fd/11

now with Ruby (IRB) - note: Ruby is shelling out to /bin/sh not /bin/bash

johnallen3d

# update homebrew
brew update

# install cask (if necessary)
brew install caskroom/cask/brew-cask

# or update cask
brew update cask

# create a dev machine that is a copy of the boot2docker image