Class: Foobara::TransformedCommand

Inherits:
Object
  • Object
show all
Defined in:
foobara-0.3.0/projects/command_connectors/src/transformed_command.rb

Overview

TODO: feels so strange that this doesn’t inherit from command

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 'projects/command_connectors/src/transformed_command.rb', line 590

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 'projects/command_connectors/src/transformed_command.rb', line 736

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 'projects/command_connectors/src/transformed_command.rb', line 7

def allowed_rule
  @allowed_rule
end

.authenticator ⇒ Object

Returns the value of attribute authenticator.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def authenticator
  @authenticator
end

.capture_unknown_error ⇒ Object

Returns the value of attribute capture_unknown_error.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def capture_unknown_error
  @capture_unknown_error
end

.command_class ⇒ Object

Returns the value of attribute command_class.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def command_class
  @command_class
end

.command_name ⇒ Object

Returns the value of attribute command_name.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def command_name
  @command_name
end

.errors_transformers ⇒ Object

Returns the value of attribute errors_transformers.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def errors_transformers
  @errors_transformers
end

.full_command_name ⇒ Object

Returns the value of attribute full_command_name.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def full_command_name
  @full_command_name
end

.inputs_transformers ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 109

def inputs_transformers
  return @inputs_transformers if @considered_inputs_sensitive_value_remover

  @considered_inputs_sensitive_value_remover = true

  inputs_type = command_class.inputs_type

  @inputs_transformers = transformers_to_processors(@inputs_transformers, inputs_type, direction: :to)
  @inputs_transformers = @inputs_transformers.reverse

  # TODO: this block looks pointless...
  @inputs_transformers.each do |transformer|
    if transformer.is_a?(TypeDeclarations::TypedTransformer)
      new_type = transformer.from_type
      if new_type
        inputs_type = new_type
        break
      end
    end
  end

  @inputs_transformers
end

.pre_commit_transformers ⇒ Object

Returns the value of attribute pre_commit_transformers.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def pre_commit_transformers
  @pre_commit_transformers
end

.request_mutators ⇒ Object

Returns the value of attribute request_mutators.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def request_mutators
  @request_mutators
end

.requires_authentication ⇒ Object

Returns the value of attribute requires_authentication.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def requires_authentication
  @requires_authentication
end

.response_mutators ⇒ Object

Returns the value of attribute response_mutators.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def response_mutators
  @response_mutators
end

.result_transformers ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 70

def result_transformers
  return @result_transformers if @considered_sensitive_value_remover

  @considered_sensitive_value_remover = true

  result_type = command_class.result_type

  result_transformers.reverse.each do |transformer|
    if transformer.is_a?(TypeDeclarations::TypedTransformer) ||
       (transformer.is_a?(Class) && transformer < TypeDeclarations::TypedTransformer)
      new_type = transformer.to_type
      if new_type
        result_type = new_type
        break
      end
    end
  end

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

    remover = Namespace.use subclassed_in_namespace do
      path = if result_type.scoped_path_set?
               result_type.scoped_full_path
             else
               [*command_class.scoped_path, *suffix, "Result"]
             end

      remover_class.new(from: result_type).tap do |r|
        r.scoped_path = ["SensitiveValueRemover", *path]
      end
    end

    @result_transformers = [*@result_transformers, remover]
  end

  @result_transformers
end

.serializers ⇒ Object

Returns the value of attribute serializers.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def serializers
  @serializers
end

.subclassed_in_namespace ⇒ Object

Returns the value of attribute subclassed_in_namespace.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def subclassed_in_namespace
  @subclassed_in_namespace
end

.suffix ⇒ Object

Returns the value of attribute suffix.



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# File 'projects/command_connectors/src/transformed_command.rb', line 7

def suffix
  @suffix
end

Instance Attribute Details

#command ⇒ Object

Returns the value of attribute command.



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# File 'projects/command_connectors/src/transformed_command.rb', line 588

def command
  @command
end

#outcome ⇒ Object

Returns the value of attribute outcome.



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# File 'projects/command_connectors/src/transformed_command.rb', line 588

def outcome
  @outcome
end

#request ⇒ Object

Returns the value of attribute request.



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# File 'projects/command_connectors/src/transformed_command.rb', line 588

def request
  @request
end

#transformed_inputs ⇒ Object

Returns the value of attribute transformed_inputs.



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# File 'projects/command_connectors/src/transformed_command.rb', line 588

def transformed_inputs
  @transformed_inputs
end

#untransformed_inputs ⇒ Object

Returns the value of attribute untransformed_inputs.



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# File 'projects/command_connectors/src/transformed_command.rb', line 588

def untransformed_inputs
  @untransformed_inputs
end

Class Method Details

.description ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 66

def description
  command_class.description
end

.error_context_type_map ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 223

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 'projects/command_connectors/src/transformed_command.rb', line 336

def foobara_manifest
  to_include = TypeDeclarations.foobara_manifest_context_to_include || Set.new

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

  inputs_transformers = TypeDeclarations.with_manifest_context(remove_sensitive: false) do
    processors_to_manifest_symbols(self.inputs_transformers)
  end
  result_transformers = processors_to_manifest_symbols(self.result_transformers)
  errors_transformers = processors_to_manifest_symbols(self.errors_transformers)
  pre_commit_transformers = processors_to_manifest_symbols(self.pre_commit_transformers)
  serializers = processors_to_manifest_symbols(self.serializers)
  response_mutators = processors_to_manifest_symbols(self.response_mutators)
  request_mutators = processors_to_manifest_symbols(self.request_mutators)

  authenticator_details = if requires_authentication && authenticator
                            {
                              symbol: authenticator.symbol,
                              explanation: authenticator.explanation
                            }
                          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

  bit_bucket = Set.new
  manifest = TypeDeclarations.with_manifest_context(to_include: bit_bucket) do
    command_class.foobara_manifest
  end

  # TODO: This should support nil as an inputs_type but it breaks other projects for now
  inputs_type = inputs_type_for_manifest&.reference_or_declaration_data ||
                { type: :attributes, element_type_declarations: {} }

  # TODO: handle errors_types_depended_on!
  to_merge = {
    inputs_types_depended_on:,
    result_types_depended_on:,
    types_depended_on: types,
    inputs_type:,
    result_type: result_type&.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_details
  }

  manifest = manifest.dup

  # TODO: we should remove all blank valued keys but keeping many for now for stability
  safe_to_remove = [
    :pre_commit_transformers,
    :response_mutators,
    :request_mutators,
    :capture_unknown_error,
    :inputs_transformers,
    :result_transformers,
    :errors_transformers,
    :requires_authentication,
    :authenticator
  ]

  to_merge.each_pair do |key, value|
    # TODO: we could probably remove empty strings and nils, too, and from the whole hash
    if value.nil? || ((value.is_a?(::Hash) || value.is_a?(::Array)) && value.empty?)
      if safe_to_remove.include?(key)
        manifest.delete(key)
      else
        manifest[key] = value
      end
    else
      manifest[key] = value
    end
  end

  manifest
end

.inputs_transformer ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 428

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

  transformers = inputs_transformers

  if transformers.empty?
    @inputs_transformer = nil
    return
  end

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

.inputs_type ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 205

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

  mutated_inputs_type = inputs_type_from_transformers

  mutators = if request_mutators.size == 1
               [request_mutator]
             else
               request_mutator&.processors
             end

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

  @inputs_type = mutated_inputs_type
end

.inputs_type_for_manifest ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 133

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

  @inputs_type_for_manifest = if inputs_type&.has_sensitive_types?
                                remover_class = Foobara::TypeDeclarations.sensitive_value_remover_class_for_type(
                                  inputs_type
                                )

                                Namespace.use subclassed_in_namespace do
                                  remover_class.new(to: inputs_type).from_type
                                end
                              else
                                inputs_type
                              end
end

.inputs_type_from_transformers ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 149

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

  @inputs_type_from_transformers = 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_transformers = from_type
                                             return from_type
                                           end
                                         end
                                       end

                                       command_class.inputs_type
                                     else
                                       if inputs_transformer.is_a?(TypeDeclarations::TypedTransformer)
                                         inputs_transformer.from_type
                                       end || command_class.inputs_type
                                     end
                                   else
                                     command_class.inputs_type
                                   end
end

.inputs_types_depended_on ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 270

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

.mutate_request(request) ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 489

def mutate_request(request)
  if request_mutator&.applicable?(request)
    request_mutator.process_value!(request)
  end
end

.possible_errors ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 252

def possible_errors
  @possible_errors ||= error_context_type_map.values
end

.possible_errors_manifest ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 256

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 'projects/command_connectors/src/transformed_command.rb', line 467

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

  # HACK: to give SensitiveValueRemover a chance to be injected
  inputs_transformer

  if request_mutators.empty?
    @request_mutator = nil
    return
  end

  @request_mutator = begin
    transformers = transformers_to_processors(request_mutators, inputs_type_from_transformers, 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 'projects/command_connectors/src/transformed_command.rb', line 445

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

  # A hack: this will give the SensitiveValueRemover a chance to be injected
  result_transformers

  if response_mutators.empty?
    @response_mutator = nil
    return
  end

  @response_mutator = begin
    transformers = transformers_to_processors(response_mutators, result_type_from_transformers, 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 'projects/command_connectors/src/transformed_command.rb', line 495

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 'projects/command_connectors/src/transformed_command.rb', line 187

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

  mutated_result_type = result_type_from_transformers

  mutators = if response_mutators.size == 1
               [response_mutator]
             else
               response_mutator&.processors&.reverse
             end

  mutators&.each do |mutator|
    mutated_result_type = mutator.result_type_from(mutated_result_type)
  end

  @result_type = mutated_result_type
end

.result_type_from_transformers ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 175

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

  command_class.result_type
end

.result_types_depended_on ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 276

def result_types_depended_on
  type_proc = -> { result_type&.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 'projects/command_connectors/src/transformed_command.rb', line 26

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
)
  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
    klass.subclassed_in_namespace = scoped_namespace
    klass.suffix = suffix
  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 'projects/command_connectors/src/transformed_command.rb', line 515

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 'projects/command_connectors/src/transformed_command.rb', line 286

def types_depended_on
  types = Set.new

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

  types_proc = proc do
    type = inputs_type_for_manifest

    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

    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

#authenticated_credential ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 627

def authenticated_credential
  request.authenticated_credential
end

#authenticated_user ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 623

def authenticated_user
  request.authenticated_user
end

#errors ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 719

def errors
  outcome.errors
end

#errors_transformer ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 685

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

#inputs ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 631

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

  @inputs = if inputs_type
              outcome = inputs_type.process_value(untransformed_inputs)

              if outcome.success?
                outcome.result
              else
                untransformed_inputs
              end
            else
              {}
            end
end

#mutate_response(response) ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 655

def mutate_response(response)
  mutator = self.class.response_mutator

  if mutator&.applicable?(response)
    mutator.process_value!(response)
  end
end

#pre_commit_transformer ⇒ Object

TODO: memoize



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# File 'projects/command_connectors/src/transformed_command.rb', line 699

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

#raw_inputs ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 732

def raw_inputs
  untransformed_inputs
end

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

Returns:

  • (Boolean) 


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# File 'projects/command_connectors/src/transformed_command.rb', line 746

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

#result ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 715

def result
  outcome.result
end

#run ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 611

def run
  apply_allowed_rule
  apply_pre_commit_transformers
  set_inputs
  run_command
  # this gives us primary keys
  flush_transactions
  transform_outcome

  outcome
end

#serialize_result(body) ⇒ Object

TODO: kill this



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# File 'projects/command_connectors/src/transformed_command.rb', line 724

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 'projects/command_connectors/src/transformed_command.rb', line 673

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 'projects/command_connectors/src/transformed_command.rb', line 663

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

#transform_result ⇒ Object 



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# File 'projects/command_connectors/src/transformed_command.rb', line 647

def transform_result
  transformer = self.class.result_transformer

  if transformer&.applicable?(result)
    self.outcome = Outcome.success(transformer.process_value!(result))
  end
end