[rackspace|compute] added create server example

lib/fog/rackspace/examples/create_server.rb

@@ -0,0 +1,86 @@
+#!/usr/bin/env ruby
+
+require 'rubygems' #required for Ruby 1.8.x
+require 'lib/fog'
+require "base64" #required to encode files for personality functionality
+
+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
+})
+
+# Pick the first flavor
+flavor = service.flavors.first
+
+# Pick the first Ubuntu image we can find
+image = service.images.find {|image| image.name =~ /Ubuntu/}
+
+# create server
+server = service.servers.create :name => 'cumulus', 
+                                :flavor_id => flavor.id, 
+                                :image_id => image.id,
+                                :metadata => { 'fog_sample' => 'true'},
+                                :personality => [{
+                                  :path => '/root/fog.txt',
+                                  :contents => Base64.encode64('Fog was here!')
+                                }]
+
+# reload flavor in order to retrieve all of its attributes
+flavor.reload
+
+puts "\nNow creating server '#{server.name}' the following with specifications:\n" 
+puts "\t* #{flavor.ram} MB RAM"
+puts "\t* #{flavor.disk} GB"
+puts "\t* #{flavor.vcpus} CPU(s)"
+puts "\t* #{image.name}"
+
+puts "\n"
+
+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(10, 5) do
+    print "."
+    STDOUT.flush
+    ready?
+  end
+  
+  puts "[DONE]\n\n"
+
+  puts "The server has been successfully created, to login onto the server:\n\n"
+  puts "\t ssh #{server.username}@#{server.public_ip_address}\n\n"
+  
+rescue Fog::Errors::TimeoutError
+  puts "[TIMEOUT]\n\n"
+  
+  puts "This server is currently #{server.progress}% into the build 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" 
+end
+
+puts "The #{server.username} password is #{server.password}\n\n"
+puts "To delete the server please execute the delete_server.rb script\n\n"
+
+