Module: PuppetDebugger::Support

Includes:
Compilier, Environment, Facts, Functions, InputResponders, Loader, Node, Play, Scope
Included in:
Cli
Defined in:
lib/puppet-debugger/support.rb,
lib/puppet-debugger/support/node.rb,
lib/puppet-debugger/support/play.rb,
lib/puppet-debugger/support/facts.rb,
lib/puppet-debugger/support/scope.rb,
lib/puppet-debugger/support/loader.rb,
lib/puppet-debugger/support/compiler.rb,
lib/puppet-debugger/support/functions.rb,
lib/puppet-debugger/support/environment.rb,
lib/puppet-debugger/support/input_responders.rb

Defined Under Namespace

Modules: Compilier, Environment, Facts, Functions, InputResponders, Loader, Node, Play, Scope

Instance Method Summary collapse

Methods included from Play

#convert_to_text, #fetch_url_data, #play_back, #play_back_string, #play_back_url

Methods included from InputResponders

#classes, #classification, #environment, #facterdb_filter, #facts, #functions, #handle_set, #help, #krt, #play, #reset, #resources, #set_log_level, #static_responder_list, #vars, #whereami

Methods included from Loader

#create_loader, #data_types, #loaders, #resolve_paths

Methods included from Node

#convert_remote_node, #create_node, #create_real_node, #get_remote_node, #node, #remote_node_name, #remote_node_name=, #set_node, #set_node_from_name, #set_remote_node_name

Methods included from Functions

#function_files, #function_map, #lib_dirs, #load_lib_dirs, #mod_finder

Methods included from Scope

#create_scope, #scope, #scope_vars, #set_scope

Methods included from Facts

#default_facter_version, #default_facterdb_filter, #default_facts, #dynamic_facterdb_filter, #facter_os_name, #facter_os_version, #facter_version, #node_facts, #server_facts, #set_facts

Methods included from Environment

#create_environment, #create_node_environment, #default_manifests_dir, #default_modules_paths, #default_puppet_env_name, #default_site_manifest, #environment_loaders, #modules_paths, #puppet_env_name, #puppet_environment, #set_environment

Methods included from Compilier

#compiler, #create_compiler, #set_compiler

Instance Method Details

#do_initialize ⇒ Object

this is required in order to load things only when we need them



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# File 'lib/puppet-debugger/support.rb', line 88

def do_initialize
  Puppet.initialize_settings
  Puppet[:parser] = 'future' # this is required in order to work with puppet 3.8
  Puppet[:trusted_node_data] = true
rescue ArgumentError => e
rescue Puppet::DevError => e
  # do nothing otherwise calling init twice raises an error
end

#generate_ast(string = nil) ⇒ Object

Returns Hostclass - a puppet Program object which is considered the main class.

Parameters:

  • String —

    • any valid puppet language code

Returns:

  • Hostclass - a puppet Program object which is considered the main class



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# File 'lib/puppet-debugger/support.rb', line 99

def generate_ast(string = nil)
  parse_result = parser.parse_string(string, '')
  # the parse_result may be
  # * empty / nil (no input)
  # * a Model::Program
  # * a Model::Expression
  #
  # should return nil or Puppet::Pops::Model::Program
  # puppet 5 does not have the method current
  model = parse_result.respond_to?(:current) ? parse_result.current : parse_result
  args = {}
  ::Puppet::Pops::Model::AstTransformer.new('').merge_location(args, model)

  ast_code =
    if model.is_a? ::Puppet::Pops::Model::Program
      ::Puppet::Parser::AST::PopsBridge::Program.new(model, args)
    else
      args[:value] = model
      ::Puppet::Parser::AST::PopsBridge::Expression.new(args)
    end
  # Create the "main" class for the content - this content will get merged with all other "main" content
  ::Puppet::Parser::AST::Hostclass.new('', code: ast_code)
end

#initialize_from_scope(value) ⇒ Object 



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# File 'lib/puppet-debugger/support.rb', line 55

def initialize_from_scope(value)
  set_scope(value)
  if value
    set_environment(value.environment)
    set_node(value.compiler.node)
    set_compiler(value.compiler)
  end
end

#keyword_expression ⇒ Object 



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# File 'lib/puppet-debugger/support.rb', line 64

def keyword_expression
  @keyword_expression ||= Regexp.new(/^exit|^:set|^play|^classification|^facts|^vars|^functions|^whereami|^classes|^resources|^krt|^environment|^reset|^help/)
end

#known_resource_types ⇒ Object 



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# File 'lib/puppet-debugger/support.rb', line 68

def known_resource_types
  res = {
    hostclasses: scope.environment.known_resource_types.hostclasses.keys,
    definitions: scope.environment.known_resource_types.definitions.keys,
    nodes: scope.environment.known_resource_types.nodes.keys
  }
  if sites = scope.environment.known_resource_types.instance_variable_get(:@sites)
    res[:sites] = scope.environment.known_resource_types.instance_variable_get(:@sites).first
  end
  if scope.environment.known_resource_types.respond_to?(:applications)
    res[:applications] = scope.environment.known_resource_types.applications.keys
  end
  # some versions of puppet do not support capabilities
  if scope.environment.known_resource_types.respond_to?(:capability_mappings)
    res[:capability_mappings] = scope.environment.known_resource_types.capability_mappings.keys
  end
  res
end

#parse_error(error) ⇒ Object

parses the error type into a more useful error message defined in errors.rb returns new error object or the original if error cannot be parsed



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# File 'lib/puppet-debugger/support.rb', line 25

def parse_error(error)
  case error
  when SocketError
    PuppetDebugger::Exception::ConnectError.new(message: "Unknown host: #{Puppet[:server]}")
  when Net::HTTPError
    PuppetDebugger::Exception::AuthError.new(message: error.message)
  when Errno::ECONNREFUSED
    PuppetDebugger::Exception::ConnectError.new(message: error.message)
  when Puppet::Error
    if error.message =~ /could\ not\ find\ class/i
      PuppetDebugger::Exception::NoClassError.new(default_modules_paths: default_modules_paths,
                                                  message: error.message)
    elsif error.message =~ /default\ node/i
      PuppetDebugger::Exception::NodeDefinitionError.new(default_site_manifest: default_site_manifest,
                                                         message: error.message)
    else
      error
    end
  else
    error
  end
end

#parser ⇒ Object

returns a future parser for evaluating code



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# File 'lib/puppet-debugger/support.rb', line 149

def parser
  @parser ||= ::Puppet::Pops::Parser::EvaluatingParser.new
end

#puppet_eval(input) ⇒ Object

Returns Object - returns either a string of the result or object from puppet evaulation.

Parameters:

  • String —

    • any valid puppet language code

Returns:

  • Object - returns either a string of the result or object from puppet evaulation



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# File 'lib/puppet-debugger/support.rb', line 125

def puppet_eval(input)
  # in order to add functions to the scope the loaders must be created
  # in order to call native functions we need to set the global_scope
  ast = generate_ast(input)
  # record the input for puppet to retrieve and reference later
  file = Tempfile.new(['puppet_debugger_input', '.pp'])
  File.open(file, 'w') do |f|
    f.write(input)
  end
  Puppet.override({ current_environment: puppet_environment, code: input,
                    global_scope: scope, loaders: scope.compiler.loaders }, 'For puppet-debugger') do
    # because the repl is not a module we leave the modname blank
    scope.environment.known_resource_types.import_ast(ast, '')
    parser.evaluate_string(scope, input, File.expand_path(file))
  end
end

#puppet_lib_dir ⇒ Object 



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# File 'lib/puppet-debugger/support.rb', line 142

def puppet_lib_dir
  # returns something like "/Library/Ruby/Gems/2.0.0/gems/puppet-4.2.2/lib/puppet.rb"
  # this is only useful when returning a namespace with the functions
  @puppet_lib_dir ||= File.dirname(Puppet.method(:[]).source_location.first)
end

#puppet_repl_lib_dir ⇒ Object

this is the lib directory of this gem in order to load any puppet functions from this gem we need to add the lib path of this gem



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# File 'lib/puppet-debugger/support.rb', line 51

def puppet_repl_lib_dir
  File.expand_path(File.join(File.dirname(File.dirname(File.dirname(__FILE__))), 'lib'))
end