bobstrange

require 'sshkit'
require 'sshkit/dsl'

HOST = '' # 'foo.domain'
USER = '' # 'ec2-user'
KEYS = [''] # '~/.ssh/id_rsa'

hoge = "hoge"
command = SSHKit::Command.new <<-EOF
  echo                # Need to place bare "echo".

bobstrange

require 'aws-sdk'

TERMINAL_CODES = %w(
  request-canceled-and-instance-running
  marked-for-termination
  instance-terminated-by-price
  instance-terminated-by-user
  instance-terminated-no-capacity
  instance-terminated-capacity-oversubscribed
  instance-terminated-launch-group-constraint

bobstrange

# Returns rake routes like formatted string.
def get_formatted_routes_data(routes)
  inspector = ActionDispatch::Routing::RoutesInspector.new(all_routes)
  inspector.format(ActionDispatch::Routing::ConsoleFormatter.new, nil)
end

all_routes = Rails.application.routes.routes
data = get_formatted_routes(all_routes)

list = data.split("\n")

bobstrange

Git

HEAD

HEAD is pointed current branch's newest commit. (also @ is pointed same)

See previous commit

# first commit before
git show HEAD^

bobstrange

How to resolve ActiveRecord::FixtureClassNotFound error when you run unit test

Refers

rspec/rspec-rails#510

Example

We have Doctor and User model. We also have DoctorsUsers model to represent with the relationship between those two models.

bobstrange

Refers

• Develop and Debug Atom Package
  • apm develop <package-name>
  • atom -d .

Short cuts

• Reload:
  • alt + cmd + ctrl + L
• Debugging console:
• alt + cmd + I

bobstrange

Unicorn configuration

https://github.com/defunkt/unicorn/blob/422a657a5f6dfb69f44feabd6429f2904ca03fa8/Sandbox#L48-L55

before_exec do |server|
  ENV["BUNDLE_GEMFILE"] = "/var/www/html/my_application/Gemfile"
end

bobstrange

Retrieve self information

instance_id

instance_id = `ec2-metadata --instance-id | sed 's/instance-id: //'`.chomp

bobstrange

require 'net/https'
require 'uri'
require 'json'
require 'csv'

token = "*******"

def retrieve_stats(token)
  url = "*******"
  uri = URI.parse("https://api.agent-stats.com/groups/#{url}/now")

bobstrange

Show Database size

SELECT 
  table_schema,
  sum(data_length+index_length) / 1024 / 1024 AS 'Total size(MB)'
FROM
  information_schema.tables
GROUP BY
 table_schema