Chester

README.markdown

Massive
Multiplayer
Online
Ephemeral
Key
Value
Storage

MMO

It's meant to be run on a simple Heroku instance, and anyone can pitch in key/value pairs

Ephemeral

Besides the obvious effects of anyone being able to access and modify the data, everything is stored in memory with no hard persistance. This is by design.

So, whenever the instances restarts or goes down, so does everything in it. This is subject to change in the future.

KVS

You store a value associated with a key. That's it.

The End

The app contains instructions on how to move data in and out.

Basically just use HTTP methods and you're golden.

app.rb

require 'sinatra'
require 'haml'
require 'json'

# initial data just to have something to fiddle with
configure do
  set :storage, { 'init' => 'all' , 'dumb' => 'dumber' }
end

get '/' do
  @store = settings.storage

  haml :index
end

get '/keys' do
  settings.storage.keys.join("\n")
end

get '/:key' do
  key = params[:key].strip
  stg = settings.storage

  stg.has_key?(key) ? stg[key] : ""
end

post '/:key' do
  key   = params[:key].strip
  value = request.body.read
  
  value.empty? ? "" : settings.storage[key] = value
end

delete '/:key' do
  key = params[:key].strip
  
  settings.storage.delete(key) if settings.storage.has_key?(key)
end

__END__

@@ index
%html
  %head
    %title Chester :: MMOEKVS

  %body{:style=>"text-align: center;"}
    %h1 Chester, the MMOEKVS
    (Massive Multiplayer Online Ephemeral Key Value Storage)
    %h2 Never Trust The Cloud.
    
    %table{:style=>"background:#DDD; margin:auto;"}
      %tr
        %td
          %strong SET
        %td curl -d "[value]" http://chester.heroku.com/[key]
      %tr
        %td
          %strong GET
        %td curl http://chester.heroku.com/[key]
      %tr
        %td
          %strong KEYS
        %td curl http://chester.heroku.com/keys
      %tr
        %td
          %strong DELETE
        %td curl -X DELETE http://chester.heroku.com/[key
    
    %table{:style => "margin: 2em auto;"}
      %tr
        %td Key
        %td Value
      - @store.each do |k,v|
        %tr
          %td= k
          %td= v

config.ru

require 'rubygems'
require './app.rb'

use Rack::ShowExceptions

run Sinatra::Application

Gemfile

source :rubygems

gem 'sinatra'
gem 'haml'