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View GitHub Profile
View Dockerfile
FROM ruby:2.5.1-slim
RUN apt-get update && apt-get install -qq -y --no-install-recommends \
build-essential \
libsqlite3-dev \
nodejs \
sqlite3 \
&& rm -rf /var/lib/apt/lists/*
RUN mkdir /app
a-leung / boolean_parsing_spec.rb
Created Nov 15, 2017
quick way to parse boolean in JSON
View boolean_parsing_spec.rb
require 'rspec'
require 'json'
require 'pry'
def convert_json(json)
def evaluate_json(input)
key = input.keys.first
a-leung / jail.local
Last active Mar 2, 2017
Basic fail2ban configuration file
View jail.local
# Fail2Ban configuration file.
# This file was composed for Debian systems from the original one
# provided now under /usr/share/doc/fail2ban/examples/jail.conf
# for additional examples.
# Comments: use '#' for comment lines and ';' for inline comments
# To avoid merges during upgrades DO NOT MODIFY THIS FILE
# and rather provide your changes in /etc/fail2ban/jail.local
a-leung / auth.log
Created Feb 16, 2017
server log for article - auth.log
View auth.log
This file has been truncated, but you can view the full file.
Jan 11 01:54:31 ip-172-31-1-163 sshd[1106]: Server listening on port 22.
Jan 11 01:54:31 ip-172-31-1-163 sshd[1106]: Server listening on :: port 22.
Jan 11 01:55:59 ip-172-31-1-163 sshd[1301]: Connection closed by [preauth]
Jan 11 01:56:37 ip-172-31-1-163 sshd[1303]: Accepted publickey for ubuntu from port 65087 ssh2: RSA 0a:78:92:3c:c8:27:13:d3:f7:ee:d5:ac:75:45:31:5c
Jan 11 01:56:37 ip-172-31-1-163 sshd[1303]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Jan 11 01:58:12 ip-172-31-1-163 sudo: ubuntu : TTY=pts/0 ; PWD=/var/log ; USER=root ; COMMAND=/usr/bin/apt-get update
Jan 11 01:58:12 ip-172-31-1-163 sudo: pam_unix(sudo:session): session opened for user root by ubuntu(uid=0)
Jan 11 01:58:18 ip-172-31-1-163 sudo: pam_unix(sudo:session): session closed for user root
Jan 11 01:59:05 ip-172-31-1-163 sudo: ubuntu : TTY=pts/0 ; PWD=/var/log ; USER=root ; COMMAND=/usr/bin/apt-get install unattended-upgrades
a-leung / refund_stripe.rb
Last active Mar 8, 2016
Stripe Stripe-Mock refunding
View refund_stripe.rb
gem 'stripe', '1.31.0'
require 'stripe'
Stripe.api_key = <insert API key here>
token = Stripe::Token.create(
:card => {
:number => "4242424242424242",
:exp_month => 3,
:exp_year => 2017,
:cvc => "314"
a-leung / refund.rb
Created Feb 8, 2016
rspec mocking issue
View refund.rb
def refund
ActiveRecord::Base.transaction do
self.items.each { |i| i.update!(refund: true) }
def refund_v2
refundable_items = self.items.where(refund: false)
a-leung / output from pg_restore
Last active Feb 4, 2016
postgres pg_restore debug
View output from pg_restore
pg_restore: executing SEQUENCE SET key_configurations_id_seq
pg_restore: processing data for table "kiosk_scans"
out of memory
a-leung / model.rb
Last active Jan 28, 2016
rspec and ActiveRecord::Base.transaction testing
View model.rb
def set_new_name_on_items?
success = ActiveRecord::Base.transaction do
model.items.each do |i| = 'new name' or raise ActiveRecord::Rollback
View model_A.rb
has_many model_B
before_save set_model_b_attributes
def set_model_b_attributes do |b|
b.value = self.value
View controller_spec.rb
param[:attribute] = true
# model passes validation as model.attribute = true
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