Class: Bolt::Plugin::Module

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

Defined Under Namespace

Classes: InvalidPluginData

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mod:, context:, config:, **_opts) ⇒ Module

Returns a new instance of Module.


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# File 'lib/bolt/plugin/module.rb', line 29

def initialize(mod:, context:, config:, **_opts)
  @module = mod
  @config = config
  @context = context
end

Instance Attribute Details

#configObject (readonly)

Returns the value of attribute config.


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# File 'lib/bolt/plugin/module.rb', line 27

def config
  @config
end

#hook_mapObject (readonly)

Returns the value of attribute hook_map.


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# File 'lib/bolt/plugin/module.rb', line 27

def hook_map
  @hook_map
end

Class Method Details

.load(mod, opts) ⇒ Object

mod should not be nil


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# File 'lib/bolt/plugin/module.rb', line 16

def self.load(mod, opts)
  if mod.plugin?
    opts[:mod] = mod
    plugin = Bolt::Plugin::Module.new(**opts)
    plugin.setup
    plugin
  else
    raise PluginError::Unknown, mod.name
  end
end

Instance Method Details

#extract_task_parameter_schemaObject


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# File 'lib/bolt/plugin/module.rb', line 176

def extract_task_parameter_schema
  # Get the intersection of expected types (using Set)
  type_set = @hook_map.each_with_object({}) do |(_hook, task), acc|
    next unless (schema = task['task'].['parameters'])
    schema.each do |param, scheme|
      next unless scheme['type'].is_a?(String)
      scheme['type'] = Set.new([scheme['type']])
      if acc.dig(param, 'type').is_a?(Set)
        scheme['type'].merge(acc[param]['type'])
      end
    end
    acc.merge!(schema)
  end
  # Convert Set to string
  type_set.each do |_param, schema|
    next unless schema['type']
    schema['type'] = if schema['type'].size > 1
                       "Optional[Variant[#{schema['type'].to_a.join(', ')}]]"
                     else
                       "Optional[#{schema['type'].to_a.first}]"
                     end
  end
end

#find_hooks(hook_data) ⇒ Object

Raises:


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# File 'lib/bolt/plugin/module.rb', line 110

def find_hooks(hook_data)
  raise InvalidPluginData.new("'hooks' must be a hash", name) unless hook_data.is_a?(Hash)

  hooks = {}
  # Load hooks specified in the config
  hook_data.each do |hook_name, hook_spec|
    unless hook_spec.is_a?(Hash) && hook_spec['task'].is_a?(String)
      msg = "Unexpected hook specification #{hook_spec.to_json} in #{@name} for hook #{hook_name}"
      raise InvalidPluginData.new(msg, name)
    end

    begin
      task = @context.get_validated_task(hook_spec['task'])
    rescue Bolt::Error => e
      msg = if e.kind == 'bolt/unknown-task'
              "Plugin #{name} specified an unkown task '#{hook_spec['task']}' for a hook"
            else
              "Plugin #{name} could not load task '#{hook_spec['task']}': #{e.message}"
            end
      raise InvalidPluginData.new(msg, name)
    end

    hooks[hook_name.to_sym] = { 'task' => task }
  end

  # Check for tasks for any hooks not already defined
  (Set.new(KNOWN_HOOKS.map) - hooks.keys).each do |hook_name|
    task_name = "#{name}::#{hook_name}"
    begin
      task = @context.get_validated_task(task_name)
    rescue Bolt::Error => e
      raise e unless e.kind == 'bolt/unknown-task'
    end
    hooks[hook_name] = { 'task' => task } if task
  end

  Bolt::Util.symbolize_top_level_keys(hooks)
end

#hooksObject


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# File 'lib/bolt/plugin/module.rb', line 58

def hooks
  (@hook_map.keys + [:validate_resolve_reference]).uniq
end

#load_dataObject


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# File 'lib/bolt/plugin/module.rb', line 62

def load_data
  JSON.parse(File.read(@module.plugin_data_file))
rescue JSON::ParserError => e
  raise InvalidPluginData.new(e.message, name)
end

#nameObject


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# File 'lib/bolt/plugin/module.rb', line 54

def name
  @module.name
end

#process_params(task, opts) ⇒ Object


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# File 'lib/bolt/plugin/module.rb', line 153

def process_params(task, opts)
  # opts are passed directly from inventory but all of the _ options are
  # handled previously. That may not always be the case so filter them
  # out now.
  meta, params = opts.partition { |key, _val| key.start_with?('_') }.map(&:to_h)

  # Reject parameters from config that are not accepted by the task and
  # merge in parameter defaults
  params = if task.parameters
             task.parameter_defaults
                 .merge(config.slice(*task.parameters.keys))
                 .merge(params)
           else
             config.merge(params)
           end

  validate_params(task, params)

  meta['_boltdir'] = @context.boltdir.to_s

  [params, meta]
end

#process_schema(schema) ⇒ Object

Raises:


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# File 'lib/bolt/plugin/module.rb', line 68

def process_schema(schema)
  raise InvalidPluginData.new('config specification is not an object', name) unless schema.is_a?(Hash)
  schema.each do |key, val|
    unless key =~ /\A[a-z][a-z0-9_]*\z/
      raise InvalidPluginData.new("config specification key, '#{key}',  is not allowed", name)
    end

    unless val.is_a?(Hash) && (val['type'] || '').is_a?(String)
      raise InvalidPluginData.new("config specification #{val.to_json} is not allowed", name)
    end

    type_string = val['type'] || 'Any'
    begin
      val['pcore_type'] = Puppet::Pops::Types::TypeParser.singleton.parse(type_string)
      if val['pcore_type'].is_a? Puppet::Pops::Types::PTypeReferenceType
        raise InvalidPluginData.new("Could not find type '#{type_string}' for #{key}", name)
      end
    rescue Puppet::ParseError
      raise InvalidPluginData.new("Could not parse type '#{type_string}' for #{key}", name)
    end
  end

  schema
end

#puppet_library(opts, target, apply_prep) ⇒ Object


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# File 'lib/bolt/plugin/module.rb', line 262

def puppet_library(opts, target, apply_prep)
  task = @hook_map[:puppet_library]['task']

  params, meta_params = process_params(task, opts)

  options = {}
  options[:run_as] = meta_params['_run_as'] if meta_params['_run_as']

  proc do
    apply_prep.run_task([target], task, params, options).first
  end
end

#resolve_reference(opts) ⇒ Object

These are all the same but are defined explicitly for clarity


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# File 'lib/bolt/plugin/module.rb', line 246

def resolve_reference(opts)
  run_hook(__method__, opts)
end

#run_hook(hook_name, opts, value = true) ⇒ Object


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# File 'lib/bolt/plugin/module.rb', line 216

def run_hook(hook_name, opts, value = true)
  hook = @hook_map[hook_name]
  # This shouldn't happen if the Plugin api is used
  raise PluginError::UnsupportedHook.new(name, hook_name) unless hook
  result = run_task(hook['task'], opts)

  if value
    unless result.include?('value')
      msg = "Plugin #{name} result did not include a value, got #{result}"
      raise Bolt::Plugin::PluginError::ExecutionError.new(msg, name, hook_name)
    end

    result['value']
  end
end

#run_task(task, opts) ⇒ Object

Raises:


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# File 'lib/bolt/plugin/module.rb', line 200

def run_task(task, opts)
  opts = opts.reject { |key, _val| key.start_with?('_') }
  params, metaparams = process_params(task, opts)
  params = params.merge(metaparams)

  # There are no executor options to pass now.
  options = { catch_errors: true }

  result = @context.run_local_task(task,
                                   params,
                                   options).first

  raise Bolt::Error.new(result.error_hash['msg'], result.error_hash['kind']) unless result.ok
  result.value
end

#secret_createkeys(opts = {}) ⇒ Object


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# File 'lib/bolt/plugin/module.rb', line 258

def secret_createkeys(opts = {})
  run_hook(__method__, opts)
end

#secret_decrypt(opts) ⇒ Object


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# File 'lib/bolt/plugin/module.rb', line 254

def secret_decrypt(opts)
  run_hook(__method__, opts)
end

#secret_encrypt(opts) ⇒ Object


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# File 'lib/bolt/plugin/module.rb', line 250

def secret_encrypt(opts)
  run_hook(__method__, opts)
end

#setupObject

This method interacts with the module on disk so it's separate from initialize


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# File 'lib/bolt/plugin/module.rb', line 36

def setup
  @data = load_data
  @hook_map = find_hooks(@data['hooks'] || {})

  if @data['config']
    msg = <<~MSG.chomp
      Found unsupported key 'config' in bolt_plugin.json. Config for a plugin is inferred
      from task parameters, with config values passed as parameters.
    MSG
    raise InvalidPluginData.new(msg, name)
  end

  # Validate againsts the intersection of all task schemas.
  @config_schema = process_schema(extract_task_parameter_schema)

  validate_config(@config, @config_schema)
end

#validate_config(config, config_schema) ⇒ Object


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# File 'lib/bolt/plugin/module.rb', line 93

def validate_config(config, config_schema)
  config.each_key do |key|
    msg = "Config for #{name} plugin contains unexpected key #{key}"
    raise Bolt::ValidationError, msg unless config_schema.include?(key)
  end

  config_schema.each do |key, spec|
    val = config[key]

    unless spec['pcore_type'].instance?(val)
      raise Bolt::ValidationError, "#{name} plugin expects a #{spec['type']} for key #{key}, got: #{val}"
    end
    val.nil?
  end
  nil
end

#validate_params(task, params) ⇒ Object


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# File 'lib/bolt/plugin/module.rb', line 149

def validate_params(task, params)
  @context.validate_params(task.name, params)
end

#validate_resolve_reference(opts) ⇒ Object


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# File 'lib/bolt/plugin/module.rb', line 232

def validate_resolve_reference(opts)
  task = @hook_map[:resolve_reference]['task']
  params, _metaparams = process_params(task, opts)

  if task
    validate_params(task, params)
  end

  if @hook_map.include?(:validate_resolve_reference)
    run_hook(:validate_resolve_reference, opts, false)
  end
end