Class: Bolt::PAL

Inherits:
Object
  • Object
show all
Defined in:
lib/bolt/pal.rb,
lib/bolt/pal/issues.rb,
lib/bolt/pal/yaml_plan.rb,
lib/bolt/pal/yaml_plan/step.rb,
lib/bolt/pal/yaml_plan/loader.rb,
lib/bolt/pal/yaml_plan/evaluator.rb,
lib/bolt/pal/yaml_plan/parameter.rb,
lib/bolt/pal/yaml_plan/step/eval.rb,
lib/bolt/pal/yaml_plan/step/plan.rb,
lib/bolt/pal/yaml_plan/step/task.rb,
lib/bolt/pal/yaml_plan/transpiler.rb,
lib/bolt/pal/yaml_plan/step/script.rb,
lib/bolt/pal/yaml_plan/step/upload.rb,
lib/bolt/pal/yaml_plan/step/command.rb,
lib/bolt/pal/yaml_plan/step/resources.rb

Direct Known Subclasses

BoltServer::PE::PAL

Defined Under Namespace

Modules: Issues Classes: PALError, YamlPlan

Constant Summary collapse

BOLTLIB_PATH = 
File.expand_path('../../bolt-modules', __dir__)
MODULES_PATH = 
File.expand_path('../../modules', __dir__)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(modulepath, hiera_config, resource_types, max_compiles = Etc.nprocessors, trusted_external = nil) ⇒ PAL

Returns a new instance of PAL.



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# File 'lib/bolt/pal.rb', line 42

def initialize(modulepath, hiera_config, resource_types, max_compiles = Etc.nprocessors, trusted_external = nil)
  # Nothing works without initialized this global state. Reinitializing
  # is safe and in practice only happens in tests
  self.class.load_puppet

  @original_modulepath = modulepath
  @modulepath = [BOLTLIB_PATH, *modulepath, MODULES_PATH]
  @hiera_config = hiera_config
  @trusted_external = trusted_external
  @max_compiles = max_compiles
  @resource_types = resource_types

  @logger = Logging.logger[self]
  if modulepath && !modulepath.empty?
    @logger.info("Loading modules from #{@modulepath.join(File::PATH_SEPARATOR)}")
  end

  @loaded = false
end

Instance Attribute Details

#modulepath ⇒ Object (readonly)

Returns the value of attribute modulepath.



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# File 'lib/bolt/pal.rb', line 40

def modulepath
  @modulepath
end

Class Method Details

.configure_logging ⇒ Object

Puppet logging is global so this is class method to avoid confusion



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# File 'lib/bolt/pal.rb', line 63

def self.configure_logging
  Puppet::Util::Log.destinations.clear
  Puppet::Util::Log.newdestination(Logging.logger['Puppet'])
  # Defer all log level decisions to the Logging library by telling Puppet
  # to log everything
  Puppet.settings[:log_level] = 'debug'
end

.load_puppet ⇒ Object 



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# File 'lib/bolt/pal.rb', line 71

def self.load_puppet
  if Bolt::Util.windows?
    # Windows 'fix' for openssl behaving strangely. Prevents very slow operation
    # of random_bytes later when establishing winrm connections from a Windows host.
    # See https://github.com/rails/rails/issues/25805 for background.
    require 'openssl'
    OpenSSL::Random.random_bytes(1)
  end

  begin
    require 'puppet_pal'
  rescue LoadError
    raise Bolt::Error.new("Puppet must be installed to execute tasks", "bolt/puppet-missing")
  end

  require 'bolt/pal/logging'
  require 'bolt/pal/issues'
  require 'bolt/pal/yaml_plan/loader'
  require 'bolt/pal/yaml_plan/transpiler'

  # Now that puppet is loaded we can include puppet mixins in data types
  Bolt::ResultSet.include_iterable
end

Instance Method Details

#alias_types(compiler) ⇒ Object

Create a top-level alias for TargetSpec and PlanResult so that users don’t have to namespace it with Boltlib, which is just an implementation detail. This allows them to feel like a built-in type in bolt, rather than something has been, no pun intended, “bolted on”.



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# File 'lib/bolt/pal.rb', line 110

def alias_types(compiler)
  compiler.evaluate_string('type TargetSpec = Boltlib::TargetSpec')
  compiler.evaluate_string('type PlanResult = Boltlib::PlanResult')
end

#convert_plan(plan_path) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 380

def convert_plan(plan_path)
  Puppet[:tasks] = true
  transpiler = YamlPlan::Transpiler.new
  transpiler.transpile(plan_path)
end

#generate_types ⇒ Object 



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# File 'lib/bolt/pal.rb', line 416

def generate_types
  require 'puppet/face/generate'
  in_bolt_compiler do
    generator = Puppet::Generate::Type
    inputs = generator.find_inputs(:pcore)
    FileUtils.mkdir_p(@resource_types)
    generator.generate(inputs, @resource_types, true)
  end
end

#get_plan_info(plan_name) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 304

def get_plan_info(plan_name)
  plan_sig = in_bolt_compiler do |compiler|
    compiler.plan_signature(plan_name)
  end

  if plan_sig.nil?
    raise Bolt::Error.unknown_plan(plan_name)
  end

  mod = plan_sig.instance_variable_get(:@plan_func).loader.parent.path

  # If it's a Puppet language plan, use strings to extract data. The only
  # way to tell is to check which filename exists in the module.
  plan_subpath = File.join(plan_name.split('::').drop(1))
  plan_subpath = 'init' if plan_subpath.empty?

  pp_path = File.join(mod, 'plans', "#{plan_subpath}.pp")
  if File.exist?(pp_path)
    require 'puppet-strings'
    require 'puppet-strings/yard'
    PuppetStrings::Yard.setup!
    YARD::Logger.instance.level = :error
    YARD.parse(pp_path)

    plan = YARD::Registry.at("puppet_plans::#{plan_name}")

    description = if plan.tag(:summary)
                    plan.tag(:summary).text
                  elsif !plan.docstring.empty?
                    plan.docstring
                  end

    defaults = plan.parameters.reject { |_, value| value.nil? }.to_h
    parameters = plan.tags(:param).each_with_object({}) do |param, params|
      name = param.name
      params[name] = { 'type' => param.types.first }
      params[name]['default_value'] = defaults[name] if defaults.key?(name)
      params[name]['description'] = param.text unless param.text.empty?
    end

    {
      'name' => plan_name,
      'description' => description,
      'parameters' => parameters,
      'module' => mod
    }

  # If it's a YAML plan, fall back to limited data
  else
    yaml_path = File.join(mod, 'plans', "#{plan_subpath}.yaml")
    plan_content = File.read(yaml_path)
    plan = Bolt::PAL::YamlPlan::Loader.from_string(plan_name, plan_content, yaml_path)

    parameters = plan.parameters.each_with_object({}) do |param, params|
      name = param.name
      type_str = case param.type_expr
                 when Puppet::Pops::Types::PTypeReferenceType
                   param.type_expr.type_string
                 when nil
                   'Any'
                 else
                   param.type_expr
                 end
      params[name] = { 'type' => type_str }
      params[name]['default_value'] = param.value
      params[name]['description'] = param.description if param.description
    end
    {
      'name' => plan_name,
      'description' => plan.description,
      'parameters' => parameters,
      'module' => mod
    }
  end
end

#get_task_info(task_name) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 283

def get_task_info(task_name)
  task = task_signature(task_name)

  if task.nil?
    raise Bolt::Error.unknown_task(task_name)
  end

  task.task_hash.reject { |k, _| k == 'parameters' }
end

#in_bolt_compiler ⇒ Object

Runs a block in a PAL script compiler configured for Bolt. Catches exceptions thrown by the block and re-raises them ensuring they are Bolt::Errors since the script compiler block will squash all exceptions.



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# File 'lib/bolt/pal.rb', line 134

def in_bolt_compiler
  # TODO: If we always call this inside a bolt_executor we can remove this here
  setup
  r = Puppet::Pal.in_tmp_environment('bolt', modulepath: @modulepath, facts: {}) do |pal|
    pal.with_script_compiler do |compiler|
      alias_types(compiler)
      register_resource_types(Puppet.lookup(:loaders)) if @resource_types
      begin
        Puppet.override(yaml_plan_instantiator: Bolt::PAL::YamlPlan::Loader) do
          yield compiler
        end
      rescue Bolt::Error => e
        e
      rescue Puppet::PreformattedError => e
        PALError.from_preformatted_error(e)
      rescue StandardError => e
        PALError.from_preformatted_error(e)
      end
    end
  end

  # Plans may return PuppetError but nothing should be throwing them
  if r.is_a?(StandardError) && !r.is_a?(Bolt::PuppetError)
    raise r
  end
  r
end

#in_plan_compiler(executor, inventory, pdb_client, applicator = nil) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 184

def in_plan_compiler(executor, inventory, pdb_client, applicator = nil)
  with_bolt_executor(executor, inventory, pdb_client, applicator) do
    # TODO: remove this call and see if anything breaks when
    # settings dirs don't actually exist. Plans shouldn't
    # actually be using them.
    with_puppet_settings do
      in_bolt_compiler do |compiler|
        yield compiler
      end
    end
  end
end

#in_task_compiler(executor, inventory) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 197

def in_task_compiler(executor, inventory)
  with_bolt_executor(executor, inventory) do
    in_bolt_compiler do |compiler|
      yield compiler
    end
  end
end

#list_modulepath ⇒ Object 



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# File 'lib/bolt/pal.rb', line 242

def list_modulepath
  @modulepath - [BOLTLIB_PATH, MODULES_PATH]
end

#list_modules ⇒ Hash{String => Array<Hash{Symbol => String,nil}>}

Returns a mapping of all modules available to the Bolt compiler

Returns:

  • (Hash{String => Array<Hash{Symbol => String,nil}>}) —

    A hash that associates each directory on the module path with an array containing a hash of information for each module in that directory. The information hash provides the name, version, and a string indicating whether the module belongs to an internal module group.



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# File 'lib/bolt/pal.rb', line 393

def list_modules
  internal_module_groups = { BOLTLIB_PATH => 'Plan Language Modules',
                             MODULES_PATH => 'Packaged Modules' }

  in_bolt_compiler do
    # NOTE: Can replace map+to_h with transform_values when Ruby 2.4
    #       is the minimum supported version.
    Puppet.lookup(:current_environment).modules_by_path.map do |path, modules|
      module_group = internal_module_groups[path]

      values = modules.map do |mod|
        mod_info = { name: (mod.forge_name || mod.name),
                     version: mod.version }
        mod_info[:internal_module_group] = module_group unless module_group.nil?

        mod_info
      end

      [path, values]
    end.to_h
  end
end

#list_plans ⇒ Object 



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# File 'lib/bolt/pal.rb', line 293

def list_plans
  in_bolt_compiler do |compiler|
    errors = []
    plans = compiler.list_plans(nil, errors).map { |plan| [plan.name] }.sort
    errors.each do |error|
      @logger.warn(error.details['original_error'])
    end
    plans
  end
end

#list_tasks ⇒ Object 



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# File 'lib/bolt/pal.rb', line 230

def list_tasks
  in_bolt_compiler do |compiler|
    tasks = compiler.list_tasks
    tasks.map(&:name).sort.each_with_object([]) do |task_name, data|
      task_sig = compiler.task_signature(task_name)
      unless task_sig.task_hash['metadata']['private']
        data << [task_name, task_sig.task_hash['metadata']['description']]
      end
    end
  end
end

#parse_manifest(code, filename) ⇒ Object

Parses a snippet of Puppet manifest code and returns the AST represented in JSON.



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# File 'lib/bolt/pal.rb', line 223

def parse_manifest(code, filename)
  setup
  Puppet::Pops::Parser::EvaluatingParser.new.parse_string(code, filename)
rescue Puppet::Error => e
  raise Bolt::PAL::PALError, "Failed to parse manifest: #{e}"
end

#parse_params(type, object_name, params) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 246

def parse_params(type, object_name, params)
  in_bolt_compiler do |compiler|
    if type == 'task'
      param_spec = compiler.task_signature(object_name)&.task_hash&.dig('parameters')
    elsif type == 'plan'
      plan = compiler.plan_signature(object_name)
      param_spec = plan.params_type.elements&.each_with_object({}) { |t, h| h[t.name] = t.value_type } if plan
    end
    param_spec ||= {}

    params.each_with_object({}) do |(name, str), acc|
      type = param_spec[name]
      begin
        parsed = JSON.parse(str, quirks_mode: true)
        # The type may not exist if the module is remote on orch or if a task
        # defines no parameters. Since we treat no parameters as Any we
        # should parse everything in this case
        acc[name] = if type && !type.instance?(parsed)
                      str
                    else
                      parsed
                    end
      rescue JSON::ParserError
        # This value may not be assignable in which case run_* will error
        acc[name] = str
      end
      acc
    end
  end
end

#register_resource_types(loaders) ⇒ Object

Register all resource types defined in $Boltdir/.resource_types as well as the built in types registered with the runtime_3_init method.



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# File 'lib/bolt/pal.rb', line 117

def register_resource_types(loaders)
  static_loader = loaders.static_loader
  static_loader.runtime_3_init
  if File.directory?(@resource_types)
    # Ruby 2.3 does not support Dir.children
    (Dir.entries(@resource_types) - %w[. ..]).each do |resource_pp|
      type_name_from_file = File.basename(resource_pp, '.pp').capitalize
      typed_name = Puppet::Pops::Loader::TypedName.new(:type, type_name_from_file)
      resource_type = Puppet::Pops::Types::TypeFactory.resource(type_name_from_file)
      loaders.static_loader.set_entry(typed_name, resource_type)
    end
  end
end

#run_plan(plan_name, params, executor = nil, inventory = nil, pdb_client = nil, applicator = nil) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 433

def run_plan(plan_name, params, executor = nil, inventory = nil, pdb_client = nil, applicator = nil)
  in_plan_compiler(executor, inventory, pdb_client, applicator) do |compiler|
    r = compiler.call_function('run_plan', plan_name, params.merge('_bolt_api_call' => true))
    Bolt::PlanResult.from_pcore(r, 'success')
  end
rescue Bolt::Error => e
  Bolt::PlanResult.new(e, 'failure')
end

#run_task(task_name, targets, params, executor, inventory, description = nil) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 426

def run_task(task_name, targets, params, executor, inventory, description = nil)
  in_task_compiler(executor, inventory) do |compiler|
    params = params.merge('_bolt_api_call' => true, '_catch_errors' => true)
    compiler.call_function('run_task', task_name, targets, description, params)
  end
end

#setup ⇒ Object 



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# File 'lib/bolt/pal.rb', line 95

def setup
  unless @loaded
    # This is slow so don't do it until we have to
    Bolt::PAL.load_puppet

    # Make sure we don't create the puppet directories
    with_puppet_settings { |_| nil }
    @loaded = true
  end
end

#task_signature(task_name) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 277

def task_signature(task_name)
  in_bolt_compiler do |compiler|
    compiler.task_signature(task_name)
  end
end

#with_bolt_executor(executor, inventory, pdb_client = nil, applicator = nil, &block) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 162

def with_bolt_executor(executor, inventory, pdb_client = nil, applicator = nil, &block)
  setup
  opts = {
    bolt_executor: executor,
    bolt_inventory: inventory,
    bolt_pdb_client: pdb_client,
    apply_executor: applicator || Applicator.new(
      inventory,
      executor,
      @modulepath,
      # Skip syncing built-in plugins, since we vendor some Puppet 6
      # versions of "core" types, which are already present on the agent,
      # but may cause issues on Puppet 5 agents.
      @original_modulepath,
      pdb_client,
      @hiera_config,
      @max_compiles
    )
  }
  Puppet.override(opts, &block)
end

#with_puppet_settings ⇒ Object

TODO: PUP-8553 should replace this



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# File 'lib/bolt/pal.rb', line 206

def with_puppet_settings
  Dir.mktmpdir('bolt') do |dir|
    cli = []
    Puppet::Settings::REQUIRED_APP_SETTINGS.each do |setting|
      cli << "--#{setting}" << dir
    end
    Puppet.settings.send(:clear_everything_for_tests)
    Puppet.initialize_settings(cli)
    Puppet::GettextConfig.create_default_text_domain
    Puppet[:trusted_external_command] = @trusted_external
    self.class.configure_logging
    yield
  end
end