arkadiyt

require 'base64'
require 'json'
require 'openssl'
require 'time'

def secure_compare(a, b)
  return false unless a.bytesize == b.bytesize

  l = a.unpack "C#{a.bytesize}"

jesster2k10

JWT Auth + Refresh Tokens in Rails

This is just some code I recently used in my development application in order to add token-based authentication for my api-only rails app. The api-client was to be consumed by a mobile application, so I needed an authentication solution that would keep the user logged in indefinetly and the only way to do this was either using refresh tokens or sliding sessions.

I also needed a way to both blacklist and whitelist tokens based on a unique identifier (jti)

Before trying it out DIY, I considered using:

davidteren

In the apps config/puma.rb file:

Change to match your CPU core count
# Check using this on the server => grep -c processor /proc/cpuinfo
workers 4

# Min and Max threads per worker
threads 1, 6

app_dir = File.expand_path('../..', FILE)

cecilemuller

How to create an HTTPS certificate for localhost domains

This focuses on generating the certificates for loading local virtual hosts hosted on your computer, for development only.

Do not use self-signed certificates in production ! For online certificates, use Let's Encrypt instead (tutorial).

drbrain

$ ruby -v t.rb
ruby 2.4.2p198 (2017-09-14 revision 59899) [x86_64-darwin17]
Lookup
Warming up --------------------------------------
Symbol Hash, Symbol Key
                       259.197k i/100ms
String Hash, String Key
                       231.953k i/100ms
Symbol Hash, String Key
                       203.959k i/100ms

dvdasari

1. Create new container  
   a) docker run -i -t ubuntu /bin/bash
   b) docker run --name rails_dev_container -i -t ubuntu ubuntu /bin/bash
   The command line flags - i -t provide an interactive shell in the new container

2. Show running docker containers    ==> docker ps

3. Show list of current containers   ==> 
   a) docker ps -a   (Show all containers, both stopped and running)
   b) docker ps -n x (shows the last x containers, running or stopped, ex: docker ps -n 5)

darryn

{% if product.metafields.properties.size > 0 %}
<div class="col-xs-12 col-lg-6">
{% for l_item in product.metafields.properties %}
{% assign key = l_item.first | split: ':' %}
{% assign key_type = key.last %}
{% assign key_title = key.first %}
{% assign value = l_item.last %}
<div class="form-group">
  <label>{{ key_title }}</label>
  {% if key_type == 'select' %}

ngsmrk

stats = Sidekiq::Stats.new

stats.queues

stats.enqueued

stats.processed

stats.failed

swithrow

#!/bin/bash

#
# copy this into /etc/profile.d/instance-name-tag.sh
#
# you will need: 
# - curl, jq, and aws cli installed
# - an IAM role that gives the EC2 instance access to describe tags
#

darryn

  {% if template contains 'collection' and collection.all_tags.size > 1 %}
  
  <!-- A recursive loop to catch and filter out the different tag categories -->
  {% assign c = 0 %} 
  {% for t in collection.all_tags %}
  {% capture cat %}{{ cat }}{% capture temp_cat %}{% if t contains '_' %}{% assign cat_grp = t | split: '_' %}{{ cat_grp.first }}{% endif %}{% endcapture %}{% unless cat contains temp_cat %}{% if t contains '_' %}{% assign new_cat_grp = t | split: '_' %}{{ new_cat_grp.first }}{% endif %}{% unless forloop.last %}+{% endunless %}{% assign c = c | plus: 1 %}{% endunless %}{% endcapture %}
  {% endfor %}
  
  <!-- create array of tag categories -->
  {% assign cat_array = cat | split: '+' %}