harssh

#resides in app/models/connectors/
class Connectors::Aws
	attr_reader :aws_access_key_id, :aws_secret_access_key, :aws_security_token, :expires_at

	def initialize
		if ENV.has_key?('AWS_SECURITY_TOKEN') #localhost
			@aws_access_key_id = ENV['AWS_ACCESS_KEY_ID']
			@aws_secret_access_key = ENV['AWS_SECRET_ACCESS_KEY']
			@aws_security_token = ENV['AWS_SECURITY_TOKEN']
			@expires_at = Time.now + 10.hours

harssh

Note: As of Ruby 3.0.0, Hash#except is now [part][1] of the language. However, Ruby does not implement Hash#except!.

Sometimes I want to remove a specific key-value pair from a Ruby hash and get the resulting hash back. If you're using Rails or ActiveSupport you can accomplish this using Hash#except:

hash = { a: 1, b: 2, c: 3 }
hash.except(:a)     # => { b: 2, c: 3 }

# note, the original hash is not modified
hash # => { a: 1, b: 2, c: 3 }

harssh

adevait.com
How to Build a Simple App and Deploy It to AWS Lambda | Adeva
by Chuma Umenze13 min read·
15–19 minutes

AWS Lambda is a serverless computing platform that lets you run code without provisioning or managing servers. The platform invokes your code in response to events such as HTTP requests. Currently, there's no official support for Rust programming language on Lambda.

To run Rust code on Lambda, we will have to build a custom runtime that will run our code.

harssh

require 'parallel'
require 'rtesseract'
require 'mini_magick'

source = "/MyDirectory/my.pdf"
doc = {}
pdf = MiniMagick::Image.open(source)
Parallel.map(pdf.pages.each_with_index, in_threads: 8) do |page, idx|
  tmpfile = Tempfile.new(['', '.tif'])
  MiniMagick::Tool::Convert.new do |convert|

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class UserObserver < Mongoid::Observer

  def after_save(record)
    expire_cache(record)
  end

  private
  def expire_cache(record)
    Rails.cache.delete("user:#{record.id}")
  end

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Post some JSON

require 'net/http'
require 'uri'
require 'json'

uri = URI.parse("http://localhost:3000/users")

header = {'Content-Type': 'text/json'}
user = {user: {

harssh

namespace :clean_code do
  # rubcop only available in dev
  if Rails.env.development?
    require 'rubocop/rake_task'
    def diff_files
      cmd = %q( git diff --name-only --diff-filter=ACMRTUXB \
      $(git merge-base HEAD origin/master) \
      | egrep '\.rake$|\.rb$' )
      diff = `#{cmd}`
      diff.split("\n")

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git --no-pager diff --name-only develop | tr '\n' ',' | sed 's/\(.*\),/\1 /'

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Model
  .where(
    "EXTRACT(dow FROM log_in) IN (1,2,3,4,5)"
  )
  .where(
    "log_in::time BETWEEN '9:00' AND '18:00'"
  )
  .where(
    "log_in BETWEEN now()::timestamp - (interval '1 week' AND now()::timestamp)"
  )

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# app/models/experience.rb
#
# == Schema Information
#
# Table name: experiences
#
#  id               :integer          not null, primary key
#  title            :string
#  description      :text
#  created_at       :datetime         not null