[rackspace|compute] tweaking examples

lib/fog/rackspace/examples/create_image.rb

@@ -44,14 +44,8 @@ servers.each_with_index do |server, i|
 end
 
 selected_str = get_user_input "\nEnter number"
+server = servers[selected_str.to_i]
 
-selected_id = begin
-  Integer(selected_str)
-rescue
-  abort "Unrecognized input. Exiting without creating image."
-end
-
-server = servers[selected_id]
 image_name = get_user_input "Enter name for image"
 
 #creates image for server

lib/fog/rackspace/examples/delete_image.rb

@@ -60,8 +60,7 @@ if delete_str == 'ALL'
   snapshot_images.each {|image| image.destroy }
   puts "All images have been destroyed"
 else
-  delete_id = Integer(delete_str)
-  image = snapshot_images[delete_id]
+  image = snapshot_images[delete_str.to_i]
   image.destroy
   puts "#{image.name} has been destroyed"
 end

lib/fog/rackspace/examples/delete_server.rb

@@ -55,8 +55,7 @@ if delete_str == 'ALL'
   servers.each {|server| server.destroy }
   puts "All servers have been destroyed"
 else
-  delete_id = Integer(delete_str)
-  server = servers[delete_id]
+  server = servers[delete_str.to_i]
   server.destroy
   puts "#{server.name} has been destroyed"
 end

lib/fog/rackspace/examples/resize_server.rb

@@ -0,0 +1,97 @@
+#!/usr/bin/env ruby
+
+# This example demonstrates how to resize servers with Fog and the Rackspace Open Cloud
+
+require 'rubygems' #required for Ruby 1.8.x
+require './lib/fog'
+
+def get_user_input(prompt)
+  print "#{prompt}: "
+  gets.chomp
+end
+
+# Use username defined in ~/.fog file, if absent prompt for username. 
+# For more details on ~/.fog refer to http://fog.io/about/getting_started.html
+def rackspace_username
+  username = Fog.credentials[:rackspace_username]
+  username ||= get_user_input "Enter Rackspace Username: "
+end
+
+# Use api key defined in ~/.fog file, if absent prompt for api key
+# For more details on ~/.fog refer to http://fog.io/about/getting_started.html
+def rackspace_api_key
+  api_key = Fog.credentials[:rackspace_api_key]
+  api_key ||= get_user_input "Enter Rackspace API key: "
+end
+
+#create Next Generation Cloud Server service
+service = Fog::Compute.new({
+  :provider             => 'rackspace',
+  :rackspace_username   => rackspace_username,
+  :rackspace_api_key    => rackspace_api_key,
+  :version => :v2,  # Use Next Gen Cloud Servers
+  :rackspace_endpoint => Fog::Compute::RackspaceV2::ORD_ENDPOINT #Use Chicago Region
+})
+
+#retrieve list of servers
+servers = service.servers
+
+abort "\nThere are not any servers to resize. Try running create_server.rb\n\n" if servers.empty?
+
+puts "\nSelect server resize:\n\n"
+servers.each_with_index do |server, i|
+  puts "\t #{i}. #{server.name} [#{server.public_ip_address}]"
+end
+
+selected_str = get_user_input "\nEnter number"
+server = servers[selected_str.to_i]
+
+puts "\n"
+
+# retrieve list of avaliable flavors
+flavors = service.flavors
+
+puts "\nSelect flavor to resize to:\n\n"
+flavors.each_with_index do |flavor, i|
+  next if server.flavor_id == flavor.id
+  puts "\t #{i}. #{flavor.name}"
+end
+
+selected_flavor_str = get_user_input "\nEnter number"
+selected_flavor = flavors[selected_flavor_str.to_i]
+
+# resize server
+server.resize selected_flavor.id
+
+begin
+  # Check every 5 seconds to see if server is in the active state (ready?). 
+  # If the server has not been built in 5 minutes (600 seconds) an exception will be raised.
+  server.wait_for(600, 5) do
+    print "."
+    STDOUT.flush
+    ready?
+  end
+
+  puts "[DONE]\n\n"
+rescue Fog::Errors::TimeoutError
+  puts "[TIMEOUT]\n\n"
+  
+  puts "This server is currently #{server.progress}% into the resize process and is taking longer to complete than expected."
+  puts "You can continute to monitor the build process through the web console at https://mycloud.rackspace.com/\n\n" 
+
+  exit
+end
+
+  puts "Server has been successfull resized!"
+  action = get_user_input "Press 'C' to confirm or 'R' to revert resize (R/C)"
+
+  case action
+  when 'C'
+    puts "\nConfirming resize operation"
+    server.confirm_resize
+  when 'R'
+    puts "\nReverting resize operation"
+    server.revert_resize
+  else
+    puts "\nUnrecognized input. Exiting."
+  end