class Node::Exec

Public Instance Methods

command() click to toggle source
# File lib/puppet/indirector/node/exec.rb, line 9
def command
  command = Puppet[:external_nodes]
  raise ArgumentError, "You must set the 'external_nodes' parameter to use the external node terminus" unless command != "none"
  command.split
end
find(request) click to toggle source

Look for external node definitions.

Calls superclass method Puppet::Indirector::Exec#find
# File lib/puppet/indirector/node/exec.rb, line 16
def find(request)
  output = super or return nil

  # Translate the output to ruby.
  result = translate(request.key, output)

  # Set the requested environment if it wasn't overridden
  # If we don't do this it gets set to the local default
  result[:environment] ||= request.environment.name

  create_node(request.key, result)
end

Private Instance Methods

create_node(name, result) click to toggle source

Turn our outputted objects into a Puppet::Node instance.

# File lib/puppet/indirector/node/exec.rb, line 37
def create_node(name, result)
  node = Puppet::Node.new(name)
  set = false
  [:parameters, :classes, :environment].each do |param|
    if value = result[param]
      node.send(param.to_s + "=", value)
      set = true
    end
  end

  node.fact_merge
  node
end
execute(command, arguments) click to toggle source

Proxy the execution, so it’s easier to test.

# File lib/puppet/indirector/node/exec.rb, line 32
def execute(command, arguments)
  Puppet::Util::Execution.execute(command,arguments)
end
translate(name, output) click to toggle source

Translate the yaml string into Ruby objects.

# File lib/puppet/indirector/node/exec.rb, line 52
def translate(name, output)
  YAML.load(output).inject({}) do |hash, data|
    case data[0]
    when String
      hash[data[0].intern] = data[1]
    when Symbol
      hash[data[0]] = data[1]
    else
      raise Puppet::Error, "key is a #{data[0].class}, not a string or symbol"
    end

    hash
  end

rescue => detail
    raise Puppet::Error, "Could not load external node results for #{name}: #{detail}"
end