gistfile1.txt

# parse config.yaml

global_config_hash = get_global_config

roles     = get_roles_from_scenario(global_config_hash['scenario'])

data_keys = get_data_keys(
              hiera_data_map_compile(global_config_hash, hierarchy).keys
            )

keys_with_defaults_hash = get_key_defaults(
                            data_keys,
                            hiera_compile_data(global_config_hash)
                          )

#
# compile the full data map provided the global config that drives the hierarchy
#
def hiera_data_map_compile(global_config_hash, hierarchy)

  require 'yaml'

  lookups = {}

  # array of things that map to directories given global_config_hash
  # ['/etc/puppet/data/scenario/2_role.yaml', '/etc/puppet/data/commmon.yaml']
  compile_hiera_map(global_config_hash, hierarchy).reverse.each do |x|
    if File.exists?(x)
      key_hash = YAML.load(File.read(x))
      if lookup == {}
        lookup = key_hash
      else
        lookup = lookup.merge(key_hash)
      end
    else
      # do we care if it does not exist?
    end
  end

end

#
# take the global config and use it to compile the list of directories
#
def compile_hiera_map(global_config_hash, hierarchy, base_dir='/etc/puppet/data')

  # hierarchy = ["scenario/%{scenario}", 'common']
  # global_config_hash = {'scenario' => '2_role'}
  hierarchy.map do |hiera_element|
    result = ''
    if hiera_element =~ /%\{([^\}]*)\}/
      result = hiera_element.gsub(/%\{([^\}]*)\}/) do
       global_config_hash[$1]
      end
    else
      result = hiera_element
    end
    File.join(base_dir, "#{result}.yaml")
  # ['/etc/puppet/data/scenario/2_role.yaml', '/etc/puppet/data/common.yaml']
  end

end

# does this not exist?
def hiera_compile_data()

end

def get_key_defaults(keys, hiera_compiled_hash)

  result_hash = {}

  keys.each do |x|
    result_hash[x] = hiera_compiled_hash['x']
  end

end
~