Add Rainbows! examples

Author: lifo

examples/full.ru

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+require File.join(File.dirname(__FILE__), "../vendor/gems/environment")
+$: << File.join(File.dirname(__FILE__), "../lib")
+
+require 'cramp/controller'
+require 'cramp/model'
+
+Cramp::Model.init(:username => 'root', :database => 'arel_development')
+
+class User < Cramp::Model::Base
+  attribute :id, :type => Integer, :primary_key => true
+  attribute :name
+
+  validates_presence_of :name
+end
+
+class UsersController < Cramp::Controller::Action
+  before_start :verify_id, :find_user
+
+  def verify_id
+    if params[:id].nil? || params[:id] !~ /\d+/
+      halt 500, {}, "Bad Request"
+    else
+      yield
+    end
+  end
+
+  def find_user
+    User.where(User[:id].eq(params[:id])).first do |user|
+      if @user = user
+        yield
+      else
+        halt 404, {}, "User not found"
+      end
+    end
+  end
+
+  # Sends a space ( ' ' ) to the client for keeping the connection alive. Default : Every 15 seconds
+  keep_connection_alive :every => 1
+
+  # Polls every 1 second by default
+  periodic_timer :poll_user
+
+  on_start  :start_benchmark
+  on_finish :stop_benchmark
+
+  def poll_user
+    User.where(User[:id].eq(@user.id)).first _(:on_user_find)
+  end
+
+  def on_user_find(user)
+    if @user.name != user.name
+      render "User's name changed from #{@user.name} to #{user.name}"
+      finish
+    end
+  end
+
+  def start_benchmark
+    @time = Time.now
+  end
+  
+  def stop_benchmark
+    puts "It took #{Time.now - @time} seconds"
+  end
+end
+
+routes = Usher::Interface.for(:rack) do
+  add('/users/:id').to(UsersController)
+end
+
+# rainbows -E deployment -c rainbows.conf full.ru
+run routes

examples/hello_world.ru

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+require File.join(File.dirname(__FILE__), "../vendor/gems/environment")
+$: << File.join(File.dirname(__FILE__), "../lib")
+
+require 'cramp/controller'
+
+class WelcomeController < Cramp::Controller::Action
+  def start
+    render "Hello World"
+    finish
+  end
+end
+
+# rainbows -E deployment -c rainbows.conf hello_world.ru
+run WelcomeController

examples/rainbows.conf

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+Rainbows! do
+  use :EventMachine
+  worker_connections 1024
+end