Class: Foobara::TransformedCommand

Inherits:
Object
  • Object
show all
Defined in:
foobara-0.0.110/projects/command/src/transformed_command.rb

Overview

TODO: feels so strange that this doesn’t inherit from command TODO: move this to command connectors project

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(untransformed_inputs = {}) ⇒ TransformedCommand

Returns a new instance of TransformedCommand.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 445

def initialize(untransformed_inputs = {})
  self.untransformed_inputs = untransformed_inputs || {}

  transform_inputs
  construct_command
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name) ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 643

def method_missing(method_name, ...)
  if command.respond_to?(method_name)
    command.send(method_name, ...)
  else
    # :nocov:
    super
    # :nocov:
  end
end

Class Attribute Details

.allowed_rule ⇒ Object

Returns the value of attribute allowed_rule.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def allowed_rule
  @allowed_rule
end

.authenticator ⇒ Object

Returns the value of attribute authenticator.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def authenticator
  @authenticator
end

.capture_unknown_error ⇒ Object

Returns the value of attribute capture_unknown_error.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def capture_unknown_error
  @capture_unknown_error
end

.command_class ⇒ Object

Returns the value of attribute command_class.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def command_class
  @command_class
end

.command_name ⇒ Object

Returns the value of attribute command_name.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def command_name
  @command_name
end

.errors_transformers ⇒ Object

Returns the value of attribute errors_transformers.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def errors_transformers
  @errors_transformers
end

.full_command_name ⇒ Object

Returns the value of attribute full_command_name.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def full_command_name
  @full_command_name
end

.inputs_transformers ⇒ Object

Returns the value of attribute inputs_transformers.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def inputs_transformers
  @inputs_transformers
end

.pre_commit_transformers ⇒ Object

Returns the value of attribute pre_commit_transformers.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def pre_commit_transformers
  @pre_commit_transformers
end

.request_mutators ⇒ Object

Returns the value of attribute request_mutators.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def request_mutators
  @request_mutators
end

.requires_authentication ⇒ Object

Returns the value of attribute requires_authentication.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def requires_authentication
  @requires_authentication
end

.response_mutators ⇒ Object

Returns the value of attribute response_mutators.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def response_mutators
  @response_mutators
end

.result_transformers ⇒ Object

Returns the value of attribute result_transformers.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def result_transformers
  @result_transformers
end

.serializers ⇒ Object

Returns the value of attribute serializers.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 6

def serializers
  @serializers
end

Instance Attribute Details

#authenticated_user ⇒ Object

Returns the value of attribute authenticated_user.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 443

def authenticated_user
  @authenticated_user
end

#command ⇒ Object

Returns the value of attribute command.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 443

def command
  @command
end

#outcome ⇒ Object

Returns the value of attribute outcome.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 443

def outcome
  @outcome
end

#transformed_inputs ⇒ Object

Returns the value of attribute transformed_inputs.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 443

def transformed_inputs
  @transformed_inputs
end

#untransformed_inputs ⇒ Object

Returns the value of attribute untransformed_inputs.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 443

def untransformed_inputs
  @untransformed_inputs
end

Class Method Details

.error_context_type_map ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 144

def error_context_type_map
  @error_context_type_map ||= begin
    set = {}

    command_class.possible_errors.each do |possible_error|
      # For now, we get the input errors off the transformed inputs_type.
      # This way if an inputs transformer changes the path of an input, we don't wind up with the old path
      # in the errors.
      if possible_error.error_class < Foobara::RuntimeError
        set[possible_error.key.to_s] = possible_error
      end
    end

    command_class.manually_added_possible_input_errors.each do |possible_error|
      set[possible_error.key.to_s] = possible_error
    end

    inputs_type&.possible_errors&.each do |possible_error|
      set[possible_error.key.to_s] = possible_error
    end

    errors_transformers.each do |transformer|
      set = transformer.transform_error_context_type_map(self, set)
    end

    set
  end
end

.foobara_manifest ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 260

def foobara_manifest
  to_include = TypeDeclarations.foobara_manifest_context_to_include

  types = types_depended_on.select(&:registered?).map do |t|
    if to_include
      to_include << t
    end
    t.foobara_manifest_reference
  end.sort

  inputs_transformers = TypeDeclarations.with_manifest_context(remove_sensitive: false) do
    self.inputs_transformers.map(&:foobara_manifest)
  end
  result_transformers = self.result_transformers.map(&:foobara_manifest)
  errors_transformers = self.errors_transformers.map(&:foobara_manifest)
  pre_commit_transformers = self.pre_commit_transformers.map(&:foobara_manifest)
  serializers = self.serializers.map do |s|
    if s.respond_to?(:foobara_manifest)
      if to_include
        to_include << s
      end
      s.foobara_manifest_reference
    else
      { proc: s.to_s }
    end
  end

  response_mutators = self.response_mutators.map(&:foobara_manifest)
  request_mutators = TypeDeclarations.with_manifest_context(remove_sensitive: false) do
    self.request_mutators.map(&:foobara_manifest)
  end

  authenticator_manifest = if authenticator
                             if authenticator.respond_to?(:foobara_manifest)
                               # TODO: test this path
                               # :nocov:
                               authenticator.foobara_manifest
                               # :nocov:
                             else
                               true
                             end
                           end

  inputs_types_depended_on =  TypeDeclarations.with_manifest_context(remove_sensitive: false) do
    self.inputs_types_depended_on.map(&:foobara_manifest_reference).sort
  end

  result_types_depended_on = self.result_types_depended_on.map(&:foobara_manifest_reference)
  result_types_depended_on = result_types_depended_on.sort

  # TODO: Do NOT defer to command_class.foobara_manifest because it might process types that
  # might not have an exposed command and might not need one due to transformers/mutators/remove_sensitive flag
  command_class.foobara_manifest.merge(
    Util.remove_blank(
      inputs_types_depended_on:,
      result_types_depended_on:,
      types_depended_on: types,
      inputs_type: TypeDeclarations.with_manifest_context(remove_sensitive: false) do
        inputs_type_for_manifest&.reference_or_declaration_data
      end,
      result_type: result_type_for_manifest&.reference_or_declaration_data,
      possible_errors: possible_errors_manifest,
      capture_unknown_error:,
      inputs_transformers:,
      result_transformers:,
      errors_transformers:,
      pre_commit_transformers:,
      serializers:,
      response_mutators:,
      request_mutators:,
      requires_authentication:,
      authenticator: authenticator_manifest
    )
  )
end

.inputs_transformer ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 336

def inputs_transformer
  return @inputs_transformer if defined?(@inputs_transformer)

  if inputs_transformers.empty?
    @inputs_transformer = nil
    return
  end

  @inputs_transformer = begin
    transformers = transformers_to_processors(inputs_transformers,
                                              command_class.inputs_type, direction: :to)

    if transformers.size == 1
      transformers.first
    else
      Value::Processor::Pipeline.new(processors: transformers)
    end
  end
end

.inputs_type ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 81

def inputs_type
  return @inputs_type if defined?(@inputs_type)

  @inputs_type = if inputs_transformer
                   if inputs_transformer.is_a?(Value::Processor::Pipeline)
                     inputs_transformer.processors.each do |transformer|
                       if transformer.is_a?(TypeDeclarations::TypedTransformer)
                         from_type = transformer.from_type
                         if from_type
                           @inputs_type = from_type
                           return from_type
                         end
                       end
                     end

                     command_class.inputs_type
                   else
                     inputs_transformer.from_type || command_class.inputs_type
                   end
                 else
                   command_class.inputs_type
                 end
end

.inputs_type_for_manifest ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 132

def inputs_type_for_manifest
  return @inputs_type_for_manifest if defined?(@inputs_type_for_manifest)

  mutated_inputs_type = inputs_type

  request_mutators&.each do |mutator|
    mutated_inputs_type = mutator.instance.inputs_type_from(mutated_inputs_type)
  end

  @inputs_type_for_manifest = mutated_inputs_type
end

.inputs_types_depended_on ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 191

def inputs_types_depended_on
  TypeDeclarations.with_manifest_context(remove_sensitive: false) do
    inputs_type_for_manifest&.types_depended_on || []
  end
end

.mutate_request(request) ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 394

def mutate_request(request)
  request_mutator&.process_value!(request)
end

.possible_errors ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 173

def possible_errors
  @possible_errors ||= error_context_type_map.values
end

.possible_errors_manifest ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 177

def possible_errors_manifest
  errors_proc = -> do
    possible_errors.map do |possible_error|
      [possible_error.key.to_s, possible_error.foobara_manifest]
    end.sort.to_h
  end

  if TypeDeclarations.manifest_context_set?(:remove_sensitive)
    errors_proc.call
  else
    TypeDeclarations.with_manifest_context(remove_sensitive: true, &errors_proc)
  end
end

.request_mutator ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 375

def request_mutator
  return @request_mutator if defined?(@request_mutator)

  if request_mutators.empty?
    @request_mutator = nil
    return
  end

  @request_mutator = begin
    transformers = transformers_to_processors(request_mutators, result_type, direction: :to)

    if transformers.size == 1
      transformers.first
    else
      Value::Processor::Pipeline.new(processors: transformers)
    end
  end
end

.response_mutator ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 356

def response_mutator
  return @response_mutator if defined?(@response_mutator)

  if response_mutators.empty?
    @response_mutator = nil
    return
  end

  @response_mutator = begin
    transformers = transformers_to_processors(response_mutators, result_type, direction: :from)

    if transformers.size == 1
      transformers.first
    else
      Value::Processor::Pipeline.new(processors: transformers)
    end
  end
end

.result_transformer ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 398

def result_transformer
  return @result_transformer if defined?(@result_transformer)

  if result_transformers.empty?
    @result_transformer = nil
    return
  end

  @result_transformer = begin
    transformers = transformers_to_processors(result_transformers, command_class.result_type, direction: :from)

    if transformers.size == 1
      transformers.first
    else
      Value::Processor::Pipeline.new(processors: transformers)
    end
  end
end

.result_type ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 116

def result_type
  result_type_from_transformers(command_class.result_type, result_transformers)
end

.result_type_for_manifest ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 120

def result_type_for_manifest
  return @result_type_for_manifest if defined?(@result_type_for_manifest)

  mutated_result_type = result_type

  response_mutators&.reverse&.each do |mutator|
    mutated_result_type = mutator.instance.result_type_from(mutated_result_type)
  end

  @result_type_for_manifest = mutated_result_type
end

.result_type_from_transformers(result_type, transformers) ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 105

def result_type_from_transformers(result_type, transformers)
  transformers.reverse.each do |transformer|
    if transformer.is_a?(Class) && transformer < TypeDeclarations::TypedTransformer
      new_type = transformer.to_type
      return new_type if new_type
    end
  end

  result_type
end

.result_types_depended_on ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 197

def result_types_depended_on
  type_proc = -> { result_type_for_manifest&.types_depended_on || [] }

  if TypeDeclarations.manifest_context_set?(:remove_sensitive)
    type_proc.call
  else
    TypeDeclarations.with_manifest_context(remove_sensitive: true, &type_proc)
  end
end

.subclass(command_class, scoped_namespace:, full_command_name:, command_name:, inputs_transformers:, result_transformers:, errors_transformers:, pre_commit_transformers:, serializers:, response_mutators:, request_mutators:, allowed_rule:, requires_authentication:, authenticator:, suffix: nil, capture_unknown_error: false) ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 25

def subclass(
  command_class,
  scoped_namespace:,
  full_command_name:,
  command_name:,
  inputs_transformers:,
  result_transformers:,
  errors_transformers:,
  pre_commit_transformers:,
  serializers:,
  response_mutators:,
  request_mutators:,
  allowed_rule:,
  requires_authentication:,
  authenticator:,
  suffix: nil,
  capture_unknown_error: false
)
  result_type = command_class.result_type

  if result_type&.has_sensitive_types?
    remover_class = Foobara::TypeDeclarations.sensitive_value_remover_class_for_type(result_type)

    remover = Namespace.use scoped_namespace do
      transformed_result_type = result_type_from_transformers(result_type, result_transformers)
      remover_class.new(from: transformed_result_type).tap do |r|
        r.scoped_path = ["SensitiveValueRemover", *transformed_result_type.scoped_full_path]
      end
    end

    result_transformers = [*result_transformers, remover]
  end

  Class.new(self).tap do |klass|
    klass.command_class = command_class
    klass.command_name = command_name
    klass.full_command_name = full_command_name
    klass.capture_unknown_error = capture_unknown_error
    klass.inputs_transformers = Util.array(inputs_transformers)
    klass.result_transformers = Util.array(result_transformers)
    klass.errors_transformers = Util.array(errors_transformers)
    klass.pre_commit_transformers = Util.array(pre_commit_transformers)
    klass.serializers = Util.array(serializers)
    klass.response_mutators = Util.array(response_mutators)
    klass.request_mutators = Util.array(request_mutators)
    klass.allowed_rule = allowed_rule
    klass.requires_authentication = requires_authentication
    klass.authenticator = authenticator
  end
end

.transformers_to_processors(transformers, target_type, direction: :from, declaration_data: self) ⇒ Object

TODO: this is pretty messy with smells.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 418

def transformers_to_processors(transformers, target_type, direction: :from, declaration_data: self)
  transformers.map do |transformer|
    if transformer.is_a?(Class)
      if transformer < TypeDeclarations::TypedTransformer
        transformer.new(direction => target_type).tap do |tx|
          new_type = direction == :from ? tx.to_type : tx.from_type
          target_type = new_type if new_type
        end
      else
        # TODO: perhaps pass in the command connector as the parent declaration data?
        transformer.new_with_agnostic_args(declaration_data:)
      end
    elsif transformer.is_a?(Value::Processor)
      transformer
    elsif transformer.respond_to?(:call)
      Value::Transformer.create(transform: transformer)
    else
      # :nocov:
      raise "Not sure how to apply #{inputs_transformer}"
      # :nocov:
    end
  end
end

.types_depended_on ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 207

def types_depended_on
  # Seems to be not necessary?
  # types = command_class.types_depended_on

  types = Set.new

  # TODO: memoize this
  # TODO: this should not delegate to command since transformers are in play

  type = inputs_type

  if type
    if type.registered?
      # TODO: if we ever change from attributes-only inputs type
      # then this will be handy
      # :nocov:
      types |= [type]
      # :nocov:
    end

    types |= type.types_depended_on
  end

  types_proc = proc do
    type = result_type

    if type
      if type.registered?
        # TODO: if we ever change from attributes-only inputs type
        # then this will be handy
        # :nocov:
        types |= [type]
        # :nocov:
      end

      types |= type.types_depended_on
    end

    possible_errors.each do |possible_error|
      error_class = possible_error.error_class
      types |= error_class.types_depended_on
    end

    types
  end

  if TypeDeclarations.manifest_context_set?(:remove_sensitive)
    types_proc.call
  else
    TypeDeclarations.with_manifest_context(remove_sensitive: true, &types_proc)
  end
end

Instance Method Details

#apply_allowed_rule ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 555

def apply_allowed_rule
  rule = allowed_rule

  if rule
    command.after_load_records do |command:, **|
      is_allowed = instance_exec(&rule)

      unless is_allowed
        explanation = allowed_rule.explanation

        if explanation.is_a?(Proc)
          explanation = instance_eval(&explanation)
        end

        if explanation.nil?
          source = if allowed_rule.block.respond_to?("source") && defined?(MethodSource)
                     begin
                       # This only works when pry is loaded
                       allowed_rule.block.source
                     rescue MethodSource::SourceNotFoundError
                       # This path is hit if the way the source code is extracted
                       # doesn't result in valid Ruby, for example, as part of a hash such as:
                       # allowed_rule: -> () { whatever?(something) },
                     end
                   end

          source ||= allowed_rule.block.source_location.join(":")
          explanation = source || "No explanation."
        end

        error = CommandConnector::NotAllowedError.for(rule_symbol: rule.symbol, explanation:)
        self.outcome = Outcome.error(error)

        command.state_machine.error!
        command.halt!
      end
    end
  end
end

#apply_pre_commit_transformers ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 595

def apply_pre_commit_transformers
  if pre_commit_transformer
    command.before_commit_transaction do |**|
      pre_commit_transformer.process_value!(self)
    end
  end
end

#construct_command ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 551

def construct_command
  self.command = command_class.new(transformed_inputs)
end

#errors ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 621

def errors
  outcome.errors
end

#errors_transformer ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 521

def errors_transformer
  return nil if errors_transformers.empty?

  transformers = self.class.transformers_to_processors(errors_transformers, nil, direction: :from,
                                                                                 declaration_data: self)

  if transformers.size == 1
    transformers.first
  else
    Value::Processor::Pipeline.new(processors: transformers)
  end
end

#mutate_response(response) ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 495

def mutate_response(response)
  self.class.response_mutator&.process_value!(response)
end

#pre_commit_transformer ⇒ Object

TODO: memoize



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 535

def pre_commit_transformer
  return nil if pre_commit_transformers.empty?

  transformers = self.class.transformers_to_processors(
    pre_commit_transformers,
    nil,
    declaration_data: self
  )

  if transformers.size == 1
    transformers.first
  else
    Value::Processor::Pipeline.new(processors: transformers)
  end
end

#requires_authentication? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 477

def requires_authentication?
  !!requires_authentication
end

#respond_to_missing?(method_name, private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 653

def respond_to_missing?(method_name, private = false)
  command.respond_to?(method_name, private) || super
end

#result ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 617

def result
  outcome.result
end

#run ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 467

def run
  apply_allowed_rule
  apply_pre_commit_transformers
  run_command
  # TODO: do this within the transaction!!!
  transform_outcome

  outcome
end

#run_command ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 603

def run_command
  outcome = command.run
  self.outcome = outcome if outcome
rescue => e
  if capture_unknown_error
    # TODO: move to superclass?
    self.outcome = Outcome.error(CommandConnector::UnknownError.for(e))
  else
    # :nocov:
    raise
    # :nocov:
  end
end

#serialize_result(body) ⇒ Object

TODO: kill this



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 635

def serialize_result(body)
  if serializer
    serializer.process_value!(body)
  else
    body
  end
end

#serializer ⇒ Object

TODO: let’s get this out of here… we might want to have different serializers for different command instances of the same class. but currently serializers is set on the class. Since this class should not be concerned with serialization, we should just try to relocate this to the Request which could delegate to the registry for defaults.



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 509

def serializer
  return nil if serializers.empty?

  transformers = self.class.transformers_to_processors(serializers, nil, declaration_data: self)

  if transformers.size == 1
    transformers.first
  else
    Value::Processor::Pipeline.new(processors: transformers)
  end
end

#transform_errors ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 499

def transform_errors
  if errors_transformer
    self.outcome = Outcome.errors(errors_transformer.process_value!(errors))
  end
end

#transform_inputs ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 481

def transform_inputs
  self.transformed_inputs = if self.class.inputs_transformer
                              self.class.inputs_transformer.process_value!(untransformed_inputs)
                            else
                              untransformed_inputs
                            end
end

#transform_outcome ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 625

def transform_outcome
  if outcome.success?
    # can we do this while still in the transaction of the command???
    transform_result
  else
    transform_errors
  end
end

#transform_result ⇒ Object 



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# File 'foobara-0.0.110/projects/command/src/transformed_command.rb', line 489

def transform_result
  if self.class.result_transformer
    self.outcome = Outcome.success(self.class.result_transformer.process_value!(result))
  end
end