Class: Hiera::Backend::Httpyaml_backend

Inherits:
Object
  • Object
show all
Defined in:
puppet/modules/wmflib/lib/hiera/backend/httpyaml_backend.rb

Overview

This naming is required by puppet.

Instance Method Summary collapse

Constructor Details

#initializeHttpyaml_backend

Returns a new instance of Httpyaml_backend



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# File 'puppet/modules/wmflib/lib/hiera/backend/httpyaml_backend.rb', line 6

def initialize
  @cache = Httpcache.new
end

Instance Method Details

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



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# File 'puppet/modules/wmflib/lib/hiera/backend/httpyaml_backend.rb', line 10

def lookup(key, scope, order_override, resolution_type)
  answer = nil
  Hiera.debug("Looking up #{key}")

  Backend.datasources(scope, order_override) do |source|
    # Small hack: We don't want to search any datasource but the
    # httpyaml/%{::labsproject} hierarchy here; so we plainly exit
    # in any other case.
    next unless source.start_with?('httpyaml/') && source.length > 'httpyaml/'.length

    data = @cache.read(source)

    next if data.nil? || data.empty?
    next unless data.include?(key)

    new_answer = Backend.parse_answer(data[key], scope)
    case resolution_type
    when :array
      raise Exception, "Hiera type mismatch: expected Array and got #{new_answer.class}" unless new_answer.kind_of?(Array) || new_answer.kind_of?(String)
      answer ||= []
      answer << new_answer
    when :hash
      raise Exception, "Hiera type mismatch: expected Hash and got #{new_answer.class}" unless new_answer.kind_of? Hash
      answer ||= {}
      answer = Backend.merge_answer(new_answer, answer)
    else
      answer = new_answer
      break
    end
  end

  answer
end