Class: Bolt::PAL

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

Defined Under Namespace

Classes: PALError

Constant Summary collapse

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(modulepath, hiera_config, max_compiles = Concurrent.processor_count) ⇒ PAL

Returns a new instance of PAL.



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# File 'lib/bolt/pal.rb', line 39

def initialize(modulepath, hiera_config, max_compiles = Concurrent.processor_count)
  # Nothing works without initialized this global state. Reinitializing
  # is safe and in practice only happen in tests
  self.class.load_puppet

  # This makes sure we don't accidentally create puppet dirs
  with_puppet_settings { |_| nil }

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

  @logger = Logging.logger[self]
  if modulepath && !modulepath.empty?
    @logger.info("Loading modules from #{@modulepath.join(File::PATH_SEPARATOR)}")
  end
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 59

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 67

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'

  # 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 92

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

#get_plan_info(plan_name) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 273

def get_plan_info(plan_name)
  plan_info = in_bolt_compiler do |compiler|
    plan = compiler.plan_signature(plan_name)
    hash = plan_hash(plan_name, plan) if plan
    hash['module'] = plan.instance_variable_get(:@plan_func).loader.parent.path if plan
    hash
  end

  if plan_info.nil?
    raise Bolt::Error.new(Bolt::Error.unknown_plan(plan_name), 'bolt/unknown-plan')
  end
  plan_info
end

#get_task_info(task_name) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 235

def get_task_info(task_name)
  task = in_bolt_compiler do |compiler|
    compiler.task_signature(task_name)
  end

  if task.nil?
    raise Bolt::Error.new(Bolt::Error.unknown_task(task_name), 'bolt/unknown-task')
  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 100

def in_bolt_compiler
  r = Puppet::Pal.in_tmp_environment('bolt', modulepath: @modulepath, facts: {}) do |pal|
    pal.with_script_compiler do |compiler|
      alias_types(compiler)
      begin
        yield compiler
      rescue Bolt::Error => err
        err
      rescue Puppet::PreformattedError => err
        PALError.from_preformatted_error(err)
      rescue StandardError => err
        PALError.from_preformatted_error(err)
      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 144

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 157

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 200

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 294

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 247

def list_plans
  in_bolt_compiler do |compiler|
    compiler.list_plans.map { |plan| [plan.name] }.sort
  end
end

#list_tasks ⇒ Object 



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# File 'lib/bolt/pal.rb', line 188

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 182

def parse_manifest(code, filename)
  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 204

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

#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 324

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, &eventblock) ⇒ Object 



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# File 'lib/bolt/pal.rb', line 317

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

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



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# File 'lib/bolt/pal.rb', line 123

def with_bolt_executor(executor, inventory, pdb_client = nil, applicator = nil, &block)
  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 166

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
    self.class.configure_logging
    yield
  end
end