jamiehodge

# What am I? A controller? A router?

class Foo < Sinatra::Base
  
  set :bar, Baz
  
  def self.both
    # aren't a composite object in denial?
    get '/glee' do
      'happy!'

jamiehodge

#! /usr/bin/env ruby

# Usage:
#   ruby sequel_dot.rb [SEQUEL-DATABASE-URI] > output.dot
# Or pipe directly to Graphviz:
#   ruby sequel_dot.rb [SEQUEL-DATABASE-URI] | dot -Tgif > output.gif
#
# Note adapted from Jeremy Evans' and Rohit Namjoshi's son's code at
#   http://sequel.heroku.com/2010/05/29/fun-with-graphviz-and-associations/
#

jamiehodge

form method='post' action=url(record)
  
  fieldset

    input name='_method' type='hidden' value='link'
    
    p
      input name='link[rel]' type='hidden' value=rel
      input name='link[id]' type='text' required=true
    

jamiehodge

Server ideals

• stateless
• tell, don't ask

Client ideals

• graceful degredation (should be possible to manually split and submit files via forms)
• a minimum of logic
• chunk files

jamiehodge

Request:

GET /
Host: tus.example.org

Response:

HTTP/1.1 200 OK

...

jamiehodge

Request:

GET /
Host: tus.example.org

Response:

HTTP/1.1 200 OK

...

jamiehodge

params = (url) ->
  plus = /\+/g
  search = /([^&=]+)=?([^&]*)/g
  decode = (s) -> decodeURIComponent s.replace(plus, ' ')
  
  index = url.indexOf '?'
  if index isnt -1 then hash = url.substr index + 1 else hash = ''
  
  result = {}
  while match = search.exec(hash)

jamiehodge

POST /uploads

• complete: default false
• chunk_size: default 1024*x

-> /uploads/id

• form PUT uploads/id/chunks/id
• list /uploads/id/chunks/id

PUT (repeat) GET to see what is missing

jamiehodge

require 'sequel'

DB ||= Sequel.connect ENV['DATABASE_URL']

class Resource < Sequel::Model
  include Sequel.inflections

  def after_save
    db.notify channel
  end

jamiehodge

create_function(:notify, <<-SQL, language: :plpgsql, returns: :trigger, replace: true)
      BEGIN
        IF (TG_OP = 'DELETE') THEN
          PERFORM pg_notify(TG_TABLE_NAME, '{ \"id\": \"' || OLD.id || '\", \"event\": \"' || TG_OP || '\" }');
          RETURN OLD;
        ELSE
          PERFORM pg_notify(TG_TABLE_NAME, '{ \"id\": \"' || NEW.id || '\", \"event\": \"' || TG_OP || '\" }');
          RETURN NEW;
        END IF;
      END;