krisleech

As a default in the model

class MyModel < Sry::Struct
  attribute :created_at, ::Types::Strict::Time.default(-> _ { Time.now }.freeze)
  # attribute :created_at, ::Types::Strict::Time.default(Proc.new { Time.now }.freeze)
  # attribute :created_at, ::Types::Strict::Time.default(lambda { |_| Time.now }.freeze)
end

krisleech

require 'app'
require 'dry-struct'
require 'types'

class Events
  def self.migrate!
    return if db.table_exists?(table_name)

    db.create_table table_name do
      String :project,      null: false

krisleech

Using rsync from cron on server A to pull files from server B via ssh.

Server A has a passwordless private key, the public key is in authorized_keys on Server B.

I can ssh from Server A to Server B.

To prevent use of ForwardAgent specific no configuration file:

ssh -F /dev/null -v admin@servera

krisleech

Create some files (via templating) on the server

- name: Create backup configuration files
  template:
    src: "{{ item.type }}.yml.j2"
    dest: "/tmp/{{ item.project }}_{{ item.env }}_{{ item.type }}.yml"
  with_items:
    - "{{ backup }}"

krisleech

[1,2,3,4,5,6,7].drop(2) # => [3,4,5,6,7]

[1,2,3,4,5,6,7].take(2) # => [1,2]

[1,2,3,4,5,6,7].reverse.take(2) # => [5,7]

[1,2,3,4,5,6,7].reverse.drop(2) # => [5, 4, 3, 2, 1]

# sorting asc and desc

krisleech

add = Proc.new { |a,b| a+b }
add.call(1,2) # => 3

 add_one = add.curry.call(1)
 add_one.call(2) # => 3
 
 # with a method
 
 def subtract(a,b); b-a; end
 

krisleech

system("bash -c 'set -o pipefail; mysqldump #{mysql_auth(configuration)} --force #{configuration[:database][:name]} | gzip -9 > #{tmp_file}'")

pipefail is not avalible with sh only bash.

The exit code will be non-zero if an error occurs with mysqldump, however the pipe will still be processed.

krisleech

require 'bundler/setup'

env = ENV.fetch('RACK_ENV', 'production')

Bundler.require(:default, env)

require 'hanami/router'
require 'hanami/controller'
require 'hanami/validations'
require 'haml'

krisleech

client = Aws::S3::Client.new(region: 'eu-west-2',
                             access_key_id: '...',
                             secret_access_key: '...')

# buckets are top-level, there are no sub-buckets and must be unique

client.create_bucket(bucket: 'acme-test', acl: 'private')

client.delete_bucket(bucket: 'acme-test')
                                         

krisleech

require "bundler"

Bundler.setup

require 'pathname'

AppRoot =  Pathname.new(__dir__)

require 'yaml'