gistfile1.rb

define :dd_jmx_entry, :jmx_port => [],:extra_config => {} do
  
  include_recipe 'columbus_monitoring::datadog'
  
  app_name = params[:name]
  jmx_port = params[:jmx_port]
  
  config_file_path = '/etc/dd-agent/conf.d/jmx.yaml.disabled'
  global_base_config = { 'init_config' => nil, 'instances'=> [] }

  app_config = { 'host' => 'localhost', 'port' => jmx_port, 'name' => app_name, 'conf'=> [] }
  
  memory_bean_config = {
    'include'=>
    {
      'domain'=>'java.lang', 
      'bean'=>'Memory', 
      'attribute'=>
      {
        'HeapMemoryUsage.used'=>
        {
          'metric_type'=>'gauge', 
          'alias'=>'JVMHeapMemoryUsed'
        }
      }
    }
  }
  
  app_config['conf'] << memory_bean_config
  
  # Deal with adding extra config...
  #if !params[:extra_config].nil?
  #  app_config['conf'] << params[:extra_config]
  #end
 
  config_file_template_resource = nil
  
  begin
    config_file_template_resource = resources(:template => config_file_path)
  rescue Chef::Exceptions::ResourceNotFound
    config_file_template_resource = template config_file_path do
      source 'jmx.yaml.erb'
      owner 'dd-agent'
      group 'root'
      mode 0644
      cookbook "columbus_app"
      variables({:data => global_base_config })
      notifies :restart, 'service[datadog-agent]', :delayed
    end
  end
  Chef::Log.debug "Current data is: #{config_file_template_resource.variables[:data]}"
  config_file_template_resource.variables[:data]['instances'] << app_config
  Chef::Log.debug "After, data is : #{config_file_template_resource.variables[:data]}"
  
end