Class: Hiera::Backend::Http_eyaml_backend

Inherits:
Object
  • Object
show all
Defined in:
lib/hiera/backend/http_eyaml_backend.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Http_eyaml_backend

Returns a new instance of Http_eyaml_backend.



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# File 'lib/hiera/backend/http_eyaml_backend.rb', line 10

def initialize
  debug("Hiera HTTP-eYAML backend starting")

  require 'lookup_http'
  @config = Config[:http_eyaml]

  lookup_supported_params = [
    :host,
    :port,
    :output,
    :failure,
    :ignore_404,
    :headers,
    :http_connect_timeout,
    :http_read_timeout,
    :use_ssl,
    :ssl_ca_cert,
    :ssl_cert,
    :ssl_key,
    :ssl_verify,
    :use_auth,
    :auth_user,
    :auth_pass,
  ]
  lookup_params = @config.select { |p| lookup_supported_params.include?(p) }

  @lookup = LookupHttp.new(lookup_params.merge( { :debug_log => "Hiera.debug" } ))


  @cache = {}
  @cache_timeout = @config[:cache_timeout] || 10
  @cache_clean_interval = @config[:cache_clean_interval] || 3600

  @regex_key_match = nil

  if confine_keys = @config[:confine_to_keys]
    confine_keys.map! { |r| Regexp.new(r) }
    @regex_key_match = Regexp.union(confine_keys)
  end

end

Instance Method Details

#lookup(key, scope, order_override, resolution_type) ⇒ Object 



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# File 'lib/hiera/backend/http_eyaml_backend.rb', line 52

def lookup(key, scope, order_override, resolution_type)

  parse_eyaml_options(scope)

  debug("Looking up #{key} in HTTP-eYAML backend")

  require 'uri'

  # if confine_to_keys is configured, then only proceed if one of the
  # regexes matches the lookup key
  #
  if @regex_key_match
    return nil unless key[@regex_key_match] == key
  end


  answer = nil

  paths = @config[:paths].map { |p| Backend.parse_string(p, scope, { 'key' => key }) }
  paths.insert(0, order_override) if order_override


  paths.each do |path|

    debug("Lookup #{key} from #{@config[:host]}:#{@config[:port]}#{path}")

    result = http_get_and_parse_with_cache(URI.escape(path))
    result = result[key] if result.is_a?(Hash)
    next if result.nil?

    parsed_result = parse_answer(result, scope)

    case resolution_type
    when :array
      answer ||= []
      answer << parsed_result
    when :hash
      answer ||= {}
      answer = Backend.merge_answer(parsed_result, answer)
    else
      answer = parsed_result
      break
    end
  end
  answer
end