sjparkinson

Ansible 101

Ansible, kinda like Puppet, but not nearly as painful.

1. Using Ansible to configure systems, VoltDB and Vault
2. Using Ansible to fix mistakes

sjparkinson

#!/usr/bin/python

# import modules used here -- sys is a very standard one
import sys

# Gather our code in a main() function
def main():
  print 'Hello there', sys.argv[1] if len(sys.argv) > 1 else 'Anon'
  # Command line args are in sys.argv[1], sys.argv[2] ..
  # sys.argv[0] is the script name itself and can be ignored

sjparkinson

Test Driven Development (TDD)

https://en.wikipedia.org/wiki/Test-driven_development#Test-driven_development_cycle

1. Write a test
2. Write your code so the tests pass
3. Refactor your code so it isn't 💩
4. GOTO 1

Behaviour-driven Development (BDD)

sjparkinson

{
    "Records": [
        {
            "EventSource": "aws:sns",
            "EventVersion": "1.0",
            "EventSubscriptionArn": "arn:aws:sns:eu-west-1:371548805176:FT-App-API-UAT-AutoScalingEvents-1VA671X21ETS2:500fe343-1af7-4b98-a81c-2a91c32f3f05",
            "Sns": {
                "Type": "Notification",
                "MessageId": "1decf081-3906-5ba1-a408-a1c886a6549e",
                "TopicArn": "arn:aws:sns:eu-west-1:371548805176:FT-App-API-UAT-AutoScalingEvents-1VA671X21ETS2",

sjparkinson

#!/usr/bin/env python

import boto3

# Standard boilerplate to call the main() function to begin
# the program.
if __name__ == '__main__':
  key = 'jif.gif'
  body = open(filename, 'rb')
  s3.Bucket('hello-world').put_object(Key=key, Body=body)

sjparkinson

import sys
import math

# Auto-generated code below aims at helping you parse
# the standard input according to the problem statement.
mime_types = {}
file_names = []

count_mime_types = int(input())  # Number of elements which make up the association table.
count_file_names = int(input())  # Number of file names to be analyzed.

sjparkinson

vcl 4.0;

sub vcl_recv {
    // Allow PURGE requests to remove a specific object if it exists.
    if (req.method == "PURGE") {
        return (purge);
    }

    // Allow BAN requests, adding a lurker friendly ban to the ban list.
    if (req.method == "BAN") {

sjparkinson

---
AWSTemplateFormatVersion: 2010-09-09

Description: >
  A basic CloudFormation template for an RDS Aurora cluster.

Parameters:
  DatabaseUsername:
    AllowedPattern: "[a-zA-Z0-9]+"
    ConstraintDescription: must be between 1 to 16 alphanumeric characters.

sjparkinson

help: ## Show this help message.
	echo "usage: make [target] ..."
	echo ""
	echo "targets:"
	fgrep --no-filename "##" ${MAKEFILE_LIST} | head -n '-1' | column -s ':#' -t -c 2

sjparkinson

#include "Gatekeeper.h"

const int kPinDrRelay = D0;
const int kPinS1Relay = D1;
const int kPinS2Relay = D2;
const int kPinDsLine = D3;
const int kPinBzLine = D4;

int primed_;