Module: PuppetRepl::Support

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

Defined Under Namespace

Modules: Compilier, Environment, Facts, Functions, InputResponders, 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 Node

#convert_remote_node, #create_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, #resolve_paths

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, #default_puppet_env_name, #environment_loaders, #puppet_env_name, #puppet_environment, #set_environment

Methods included from Compilier

#compiler, #create_compiler, #set_compiler

Instance Method Details

#default_manifests_dir ⇒ Object 



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# File 'lib/puppet-repl/support.rb', line 167

def default_manifests_dir
  File.join(Puppet[:environmentpath],default_puppet_env_name,'manifests')
end

#default_modules_paths ⇒ Object

returns an array of module directories, generally this is the only place to look for puppet code by default. This is read from the puppet configuration



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# File 'lib/puppet-repl/support.rb', line 48

def default_modules_paths
  dirs = []
  do_initialize if Puppet[:codedir].nil?
  # add the puppet-repl directory so we can load any defined functions
  dirs << File.join(Puppet[:environmentpath],default_puppet_env_name,'modules') unless Puppet[:environmentpath].empty?
  dirs << Puppet.settings[:basemodulepath].split(':')
  dirs.flatten
end

#default_site_manifest ⇒ Object 



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# File 'lib/puppet-repl/support.rb', line 171

def default_site_manifest
  File.join(default_manifests_dir, 'site.pp')
end

#do_initialize ⇒ Object

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



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# File 'lib/puppet-repl/support.rb', line 102

def do_initialize
  begin
    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
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-repl/support.rb', line 116

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
  #
  model = parse_result.nil? ? nil : parse_result.current
  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-repl/support.rb', line 69

def initialize_from_scope(value)
  set_scope(value)
  unless value.nil?
    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-repl/support.rb', line 78

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

#known_resource_types ⇒ Object 



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# File 'lib/puppet-repl/support.rb', line 82

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.merge!(:sites => scope.environment.known_resource_types.instance_variable_get(:@sites).first)
  end
  if scope.environment.known_resource_types.respond_to?(:applications)
    res.merge!(: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.merge!(:capability_mappings => scope.environment.known_resource_types.capability_mappings.keys)
  end
  res
end

#modules_paths ⇒ Object

returns all the modules paths defined in the environment



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# File 'lib/puppet-repl/support.rb', line 65

def modules_paths
  puppet_environment.full_modulepath
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-repl/support.rb', line 23

def parse_error(error)
  case error
  when SocketError
    PuppetRepl::Exception::ConnectError.new(:message => "Unknown host: #{Puppet[:server]}")
  when Net::HTTPError
    PuppetRepl::Exception::AuthError.new(:message => error.message)
  when Errno::ECONNREFUSED
    PuppetRepl::Exception::ConnectError.new(:message => error.message)
  when Puppet::Error
    if error.message =~ /could\ not\ find\ class/i
      PuppetRepl::Exception::NoClassError.new(:default_modules_paths => default_modules_paths,
       :message => error.message)
    elsif error.message =~ /default\ node/i
      PuppetRepl::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-repl/support.rb', line 163

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-repl/support.rb', line 140

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_repl_input', '.pp'])
  File.open(file, 'w') do |f|
    f.write(input)
  end
  Puppet.override( {:code => input, :global_scope => scope, :loaders => scope.compiler.loaders } , 'For puppet-repl') 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-repl/support.rb', line 156

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-repl/support.rb', line 60

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