Add caching to @opscode/chef-rundeck

caching.diff

diff --git a/bin/chef-rundeck b/bin/chef-rundeck
index 5ea22d7..b665ca5 100755
--- a/bin/chef-rundeck
+++ b/bin/chef-rundeck
@@ -46,6 +46,12 @@ class ChefRundeckCLI
      :long => "--port PORT",
      :description => "The port to run on, default 9980",
      :default => 9980
+
+   option :cache_file,
+     :short => "-f FILE",
+     :long => "--file FILE",
+     :description => "The cache file path",
+     :default => "/tmp/rundeck_chef_cache.xml"
 end
 
 cli = ChefRundeckCLI.new
@@ -54,6 +60,7 @@ cli.parse_options
 ChefRundeck.config_file = cli.config[:config_file]
 ChefRundeck.username = cli.config[:username]
 ChefRundeck.web_ui_url = cli.config[:web_ui_url]
+ChefRundeck.cache_file = cli.config[:cache_file]
 ChefRundeck.configure
 
 ChefRundeck.run! :host => 'localhost', :port => cli.config[:port] 
diff --git a/lib/chef-rundeck.rb b/lib/chef-rundeck.rb
index 7e95dc4..674003b 100644
--- a/lib/chef-rundeck.rb
+++ b/lib/chef-rundeck.rb
@@ -27,6 +27,7 @@ class ChefRundeck < Sinatra::Base
     attr_accessor :config_file
     attr_accessor :username
     attr_accessor :web_ui_url
+    attr_accessor :cache_file
 
     def configure
       Chef::Config.from_file(ChefRundeck.config_file)
@@ -34,31 +35,58 @@ class ChefRundeck < Sinatra::Base
     end
   end
 
-  get '/' do
-    content_type 'text/xml'
-    response = '<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE project PUBLIC "-//DTO Labs Inc.//DTD Resources Document 1.0//EN" "project.dtd"><project>'
+  def generate_xml
+    # get stuff
+    fp = open(ChefRundeck.cache_file,"w")
+    response = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><!DOCTYPE project PUBLIC \"-//DTO Labs Inc.//DTD Resources Document 1.0//EN\" \"project.dtd\">\n<project>\n"
+
     Chef::Node.list(true).each do |node_array|
       node = node_array[1]
       #--
       # Certain features in Rundeck require the osFamily value to be set to 'unix' to work appropriately. - SRK
       #++
-      os_family = node[:kernel][:os] =~ /windows/i ? 'windows' : 'unix'
-      response << <<-EOH
+
+      begin
+        if node.name == node.fqdn then
+          os_family = node[:kernel][:os] =~ /windows/i ? 'windows' : 'unix'
+          tags = Array.new
+          tags << node.chef_environment
+          tags << node.run_list.roles
+          #tags="#{xml_escape([node.chef_environment, node.run_list.roles.join(',')].join(','))}"
+          response << <<-EOH
 <node name="#{xml_escape(node[:fqdn])}" 
-      type="Node" 
       description="#{xml_escape(node.name)}"
       osArch="#{xml_escape(node[:kernel][:machine])}"
       osFamily="#{xml_escape(os_family)}"
       osName="#{xml_escape(node[:platform])}"
       osVersion="#{xml_escape(node[:platform_version])}"
-      tags="#{xml_escape([node.chef_environment, node.run_list.roles.join(',')].join(','))}"
+      tags="#{xml_escape(tags.join(','))}"
       username="#{xml_escape(ChefRundeck.username)}"
       hostname="#{xml_escape(node[:fqdn])}"
       editUrl="#{xml_escape(ChefRundeck.web_ui_url)}/nodes/#{xml_escape(node.name)}/edit"/>
 EOH
+          else
+            #puts node.name + " has a diverging FQDN : " + node.fqdn
+          end
+    rescue Exception => e
+      #puts "oops " + node.name + " raised " + e.inspect
+    end
     end
     response << "</project>"
-    response
+    fp.write(response)
+    fp.close
+  end
+
+  get '/' do
+    content_type 'text/xml'
+    unless File.exists?(ChefRundeck.cache_file)
+      generate_xml()
+    end
+
+    if Time.now.to_i - File.mtime(ChefRundeck.cache_file).to_i > 300 then
+      generate_xml()
+    end
+    File.read(ChefRundeck.cache_file)
   end
 end