Class: Bolt::Applicator

Inherits:
Object
  • Object
show all
Defined in:
lib/bolt/applicator.rb

Instance Method Summary collapse

Constructor Details

#initialize(inventory, executor, modulepath, plugin_dirs, project, pdb_client, hiera_config, max_compiles, apply_settings) ⇒ Applicator

Returns a new instance of Applicator.



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# File 'lib/bolt/applicator.rb', line 17

def initialize(inventory, executor, modulepath, plugin_dirs, project,
               pdb_client, hiera_config, max_compiles, apply_settings)
  # lazy-load expensive gem code
  require 'concurrent'
  @inventory = inventory
  @executor = executor
  @modulepath = modulepath || []
  @plugin_dirs = plugin_dirs
  @project = project
  @pdb_client = pdb_client
  @hiera_config = hiera_config ? validate_hiera_config(hiera_config) : nil
  @apply_settings = apply_settings || {}

  @pool = Concurrent::ThreadPoolExecutor.new(name: 'apply', max_threads: max_compiles)
  @logger = Bolt::Logger.logger(self)
end

Instance Method Details

#apply(args, apply_body, scope) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/bolt/applicator.rb', line 175

def apply(args, apply_body, scope)
  raise(ArgumentError, 'apply requires a TargetSpec') if args.empty?
  raise(ArgumentError, 'apply requires at least one statement in the apply block') if apply_body.nil?
  type0 = Puppet.lookup(:pal_script_compiler).type('TargetSpec')
  Puppet::Pal.assert_type(type0, args[0], 'apply targets')

  @executor.report_function_call('apply')

  options = {}
  if args.count > 1
    type1 = Puppet.lookup(:pal_script_compiler).type('Hash[String, Data]')
    Puppet::Pal.assert_type(type1, args[1], 'apply options')
    options = args[1].transform_keys { |k| k.sub(/^_/, '').to_sym }
  end

  plan_vars = scope.to_hash(true, true)

  targets = @inventory.get_targets(args[0])

  apply_ast(apply_body, targets, options, plan_vars)
end

#apply_ast(raw_ast, targets, options, plan_vars = {}) ⇒ Object 



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# File 'lib/bolt/applicator.rb', line 209

def apply_ast(raw_ast, targets, options, plan_vars = {})
  ast = Puppet::Pops::Serialization::ToDataConverter.convert(raw_ast, rich_data: true, symbol_to_string: true)
  # Serialize as pcore for *Result* objects
  plan_vars = Puppet::Pops::Serialization::ToDataConverter.convert(plan_vars,
                                                                   rich_data: true,
                                                                   symbol_as_string: true,
                                                                   type_by_reference: true,
                                                                   local_reference: true)

  scope = {
    code_ast: ast,
    modulepath: @modulepath,
    project: @project.to_h,
    pdb_config: @pdb_client.config.to_hash,
    hiera_config: @hiera_config,
    plan_vars: plan_vars,
    # This data isn't available on the target config hash
    config: @inventory.transport_data_get
  }.freeze
  description = options[:description] || 'apply catalog'

  required_modules = options[:required_modules].nil? ? nil : Array(options[:required_modules])
  if required_modules&.any?
    @logger.debug("Syncing only required modules: #{required_modules.join(',')}.")
  end

  @plugin_tarball = Concurrent::Delay.new do
    build_plugin_tarball do |mod|
      next unless required_modules.nil? || required_modules.include?(mod.name)
      search_dirs = []
      search_dirs << mod.plugins if mod.plugins?
      search_dirs << mod.pluginfacts if mod.pluginfacts?
      search_dirs << mod.files if mod.files?
      search_dirs << mod.scripts if mod.scripts?
      type_files = "#{mod.path}/types"
      search_dirs << type_files if File.exist?(type_files)
      search_dirs
    end
  end

  r = @executor.log_action(description, targets) do
    futures = targets.map do |target|
      Concurrent::Future.execute(executor: @pool) do
        Thread.current[:name] ||= Thread.current.name
        @executor.with_node_logging("Compiling manifest block", [target]) do
          compile(target, scope)
        end
      end
    end

    result_promises = targets.zip(futures).flat_map do |target, future|
      @executor.queue_execute([target]) do |transport, batch|
        @executor.with_node_logging("Applying manifest block", batch) do
          catalog = future.value
          if future.rejected?
            batch.map do |batch_target|
              # If an unhandled exception occurred, wrap it in an ApplyError
              error = if future.reason.is_a?(Bolt::ApplyError)
                        future.reason
                      else
                        Bolt::ApplyError.new(batch_target, future.reason.message)
                      end

              result = Bolt::ApplyResult.new(batch_target, error: error.to_h)
              @executor.publish_event(type: :node_result, result: result)
              result
            end
          else

            arguments = {
              'catalog' => Puppet::Pops::Types::PSensitiveType::Sensitive.new(catalog),
              'plugins' => Puppet::Pops::Types::PSensitiveType::Sensitive.new(plugins),
              'apply_settings' => @apply_settings,
              '_task' => catalog_apply_task.name,
              '_noop' => options[:noop]
            }

            callback = proc do |event|
              if event[:type] == :node_result
                event = event.merge(result: ApplyResult.from_task_result(event[:result]))
              end
              @executor.publish_event(event)
            end
            # Respect the run_as default set on the executor
            options[:run_as] = @executor.run_as if @executor.run_as && !options.key?(:run_as)

            results = transport.batch_task(batch, catalog_apply_task, arguments, options, &callback)
            Array(results).map { |result| ApplyResult.from_task_result(result) }
          end
        end
      end
    end

    @executor.await_results(result_promises)
  end

  # Allow for report to exclude event metrics (apply_result doesn't require it to be present)
  resource_counts = r.ok_set.map { |result| result.event_metrics&.fetch('total') }.compact
  @executor.report_apply(count_statements(raw_ast), resource_counts)

  if !r.ok && !options[:catch_errors]
    raise Bolt::ApplyFailure, r
  end
  r
end

#build_plugin_tarball ⇒ Object 



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# File 'lib/bolt/applicator.rb', line 320

def build_plugin_tarball
  # lazy-load expensive gem code
  require 'minitar'
  require 'zlib'

  start_time = Time.now
  sio = StringIO.new
  output = Minitar::Output.new(Zlib::GzipWriter.new(sio))

  Puppet.lookup(:current_environment).override_with(modulepath: @plugin_dirs).modules.each do |mod|
    search_dirs = yield mod

    tar_dir = Pathname.new(mod.name) # goes great with fish
    mod_dir = Pathname.new(mod.path)
    files = Find.find(*search_dirs).select { |file| File.file?(file) }

    files.each do |file|
      tar_path = tar_dir + Pathname.new(file).relative_path_from(mod_dir)
      @logger.trace("Packing plugin #{file} to #{tar_path}")
      stat = File.stat(file)
      content = File.binread(file)
      output.tar.add_file_simple(
        tar_path.to_s,
        data: content,
        size: content.size,
        mode: stat.mode & 0o777,
        mtime: stat.mtime
      )
    end
  end

  duration = Time.now - start_time
  @logger.trace("Packed plugins in #{duration * 1000} ms")

  output.close
  Base64.encode64(sio.string)
ensure
  output&.close
end

#catalog_apply_task ⇒ Object 



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# File 'lib/bolt/applicator.rb', line 51

def catalog_apply_task
  @catalog_apply_task ||= begin
    path = File.join(libexec, 'apply_catalog.rb')
    file = { 'name' => 'apply_catalog.rb', 'path' => path }
    metadata = { 'supports_noop' => true, 'input_method' => 'stdin',
                 'implementations' => [
                   { 'name' => 'apply_catalog.rb' },
                   { 'name' => 'apply_catalog.rb', 'remote' => true }
                 ] }
    Bolt::Task.new('apply_helpers::apply_catalog', metadata, [file])
  end
end

#compile(target, scope) ⇒ Object 



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# File 'lib/bolt/applicator.rb', line 78

def compile(target, scope)
  # This simplified Puppet node object is what .local uses to determine the
  # certname of the target
  node = Puppet::Node.from_data_hash('name' => target.name,
                                     'parameters' => { 'clientcert' => target.name })
  trusted = Puppet::Context::TrustedInformation.local(node)
  target_data = {
    name: target.name,
    facts: @inventory.facts(target).merge('bolt' => true),
    variables: @inventory.vars(target),
    trusted: trusted.to_h
  }
  catalog_request = scope.merge(target: target_data).merge(future: @executor.future || {})

  bolt_catalog_exe = File.join(libexec, 'bolt_catalog')
  old_path = ENV['PATH']
  ENV['PATH'] = "#{RbConfig::CONFIG['bindir']}#{File::PATH_SEPARATOR}#{old_path}"
  out, err, stat = Open3.capture3('ruby', bolt_catalog_exe, 'compile', stdin_data: catalog_request.to_json)
  ENV['PATH'] = old_path

  # If bolt_catalog does not return valid JSON, we should print stderr to
  # see what happened
  print_logs = stat.success?
  result = begin
    JSON.parse(out)
  rescue JSON::ParserError
    print_logs = true
    { 'message' => "Something's gone terribly wrong! STDERR is logged." }
  end

  # Any messages logged by Puppet will be on stderr as JSON hashes, so we
  # parse those and store them here. Any message on stderr that is not
  # properly JSON formatted is assumed to be an error message.  If
  # compilation was successful, we print the logs as they may include
  # important warnings. If compilation failed, we don't print the logs as
  # they are likely redundant with the error that caused the failure, which
  # will be handled separately.
  logs = err.lines.map do |line|
    JSON.parse(line)
  rescue JSON::ParserError
    { 'level' => 'err', 'message' => line }
  end

  if print_logs
    logs.each do |log|
      bolt_level = Bolt::Util::PuppetLogLevel::MAPPING[log['level'].to_sym]
      message = log['message'].chomp

      case bolt_level
      when :warn
        handle_warning(target, message)
      else
        @logger.send(bolt_level, "#{target.name}: #{message}")
      end
    end
  end

  unless stat.success?
    message = if @apply_settings['trace'] && result['backtrace']
                ([result['message']] + result['backtrace']).join("\n  ")
              else
                result['message']
              end
    raise ApplyError.new(target.name, message)
  end

  result
end

#count_statements(ast) ⇒ Object

Count the number of top-level statements in the AST.



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# File 'lib/bolt/applicator.rb', line 198

def count_statements(ast)
  case ast
  when Puppet::Pops::Model::Program
    count_statements(ast.body)
  when Puppet::Pops::Model::BlockExpression
    ast.statements.count
  else
    1
  end
end

#custom_facts_task ⇒ Object 



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# File 'lib/bolt/applicator.rb', line 38

def custom_facts_task
  @custom_facts_task ||= begin
    path = File.join(libexec, 'custom_facts.rb')
    file = { 'name' => 'custom_facts.rb', 'path' => path }
    metadata = { 'supports_noop' => true, 'input_method' => 'stdin',
                 'implementations' => [
                   { 'name' => 'custom_facts.rb' },
                   { 'name' => 'custom_facts.rb', 'remote' => true }
                 ] }
    Bolt::Task.new('apply_helpers::custom_facts', metadata, [file])
  end
end

#plugins ⇒ Object 



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# File 'lib/bolt/applicator.rb', line 315

def plugins
  @plugin_tarball.value ||
    raise(Bolt::Error.new("Failed to pack module plugins: #{@plugin_tarball.reason}", 'bolt/plugin-error'))
end

#query_resources_task ⇒ Object 



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# File 'lib/bolt/applicator.rb', line 64

def query_resources_task
  @query_resources_task ||= begin
    path = File.join(libexec, 'query_resources.rb')
    file = { 'name' => 'query_resources.rb', 'path' => path }
    metadata = { 'supports_noop' => true, 'input_method' => 'stdin',
                 'implementations' => [
                   { 'name' => 'query_resources.rb' },
                   { 'name' => 'query_resources.rb', 'remote' => true }
                 ] }

    Bolt::Task.new('apply_helpers::query_resources', metadata, [file])
  end
end

#validate_hiera_config(hiera_config) ⇒ Object 



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# File 'lib/bolt/applicator.rb', line 163

def validate_hiera_config(hiera_config)
  if File.exist?(File.path(hiera_config))
    data = File.open(File.path(hiera_config), "r:UTF-8") { |f| YAML.safe_load(f.read, [Symbol]) }
    if data.nil?
      return nil
    elsif data['version'] != 5
      raise Bolt::ParseError, "Hiera v5 is required, found v#{data['version'] || 3} in #{hiera_config}"
    end
    hiera_config
  end
end