# frozen_string_literal: true

# Copyright 2023 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Auto-generated by gapic-generator-ruby. DO NOT EDIT!

require "google/cloud/errors"
require "google/cloud/commerce/consumer/procurement/v1/procurement_service_pb"
require "google/cloud/commerce/consumer/procurement/v1/consumer_procurement_service/rest/service_stub"

module Google
  module Cloud
    module Commerce
      module Consumer
        module Procurement
          module V1
            module ConsumerProcurementService
              module Rest
                ##
                # REST client for the ConsumerProcurementService service.
                #
                # ConsumerProcurementService allows customers to make purchases of products
                # served by the Cloud Commerce platform.
                #
                #
                # When purchases are made, the
                # {::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client ConsumerProcurementService}
                # programs the appropriate backends, including both Google's own
                # infrastructure, as well as third-party systems, and to enable billing setup
                # for charging for the procured item.
                #
                class Client
                  # @private
                  DEFAULT_ENDPOINT_TEMPLATE = "cloudcommerceconsumerprocurement.$UNIVERSE_DOMAIN$"

                  include Paths

                  # @private
                  attr_reader :consumer_procurement_service_stub

                  ##
                  # Configure the ConsumerProcurementService Client class.
                  #
                  # See {::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client::Configuration}
                  # for a description of the configuration fields.
                  #
                  # @example
                  #
                  #   # Modify the configuration for all ConsumerProcurementService clients
                  #   ::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client.configure do |config|
                  #     config.timeout = 10.0
                  #   end
                  #
                  # @yield [config] Configure the Client client.
                  # @yieldparam config [Client::Configuration]
                  #
                  # @return [Client::Configuration]
                  #
                  def self.configure
                    @configure ||= begin
                      namespace = ["Google", "Cloud", "Commerce", "Consumer", "Procurement", "V1"]
                      parent_config = while namespace.any?
                                        parent_name = namespace.join "::"
                                        parent_const = const_get parent_name
                                        break parent_const.configure if parent_const.respond_to? :configure
                                        namespace.pop
                                      end
                      default_config = Client::Configuration.new parent_config

                      default_config.rpcs.place_order.timeout = 60.0

                      default_config.rpcs.get_order.timeout = 60.0
                      default_config.rpcs.get_order.retry_policy = {
                        initial_delay: 1.0, max_delay: 60.0, multiplier: 1.3, retry_codes: [14]
                      }

                      default_config.rpcs.list_orders.timeout = 60.0
                      default_config.rpcs.list_orders.retry_policy = {
                        initial_delay: 1.0, max_delay: 60.0, multiplier: 1.3, retry_codes: [14]
                      }

                      default_config
                    end
                    yield @configure if block_given?
                    @configure
                  end

                  ##
                  # Configure the ConsumerProcurementService Client instance.
                  #
                  # The configuration is set to the derived mode, meaning that values can be changed,
                  # but structural changes (adding new fields, etc.) are not allowed. Structural changes
                  # should be made on {Client.configure}.
                  #
                  # See {::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client::Configuration}
                  # for a description of the configuration fields.
                  #
                  # @yield [config] Configure the Client client.
                  # @yieldparam config [Client::Configuration]
                  #
                  # @return [Client::Configuration]
                  #
                  def configure
                    yield @config if block_given?
                    @config
                  end

                  ##
                  # The effective universe domain
                  #
                  # @return [String]
                  #
                  def universe_domain
                    @consumer_procurement_service_stub.universe_domain
                  end

                  ##
                  # Create a new ConsumerProcurementService REST client object.
                  #
                  # @example
                  #
                  #   # Create a client using the default configuration
                  #   client = ::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client.new
                  #
                  #   # Create a client using a custom configuration
                  #   client = ::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client.new do |config|
                  #     config.timeout = 10.0
                  #   end
                  #
                  # @yield [config] Configure the ConsumerProcurementService client.
                  # @yieldparam config [Client::Configuration]
                  #
                  def initialize
                    # Create the configuration object
                    @config = Configuration.new Client.configure

                    # Yield the configuration if needed
                    yield @config if block_given?

                    # Create credentials
                    credentials = @config.credentials
                    # Use self-signed JWT if the endpoint is unchanged from default,
                    # but only if the default endpoint does not have a region prefix.
                    enable_self_signed_jwt = @config.endpoint.nil? ||
                                             (@config.endpoint == Configuration::DEFAULT_ENDPOINT &&
                                             !@config.endpoint.split(".").first.include?("-"))
                    credentials ||= Credentials.default scope: @config.scope,
                                                        enable_self_signed_jwt: enable_self_signed_jwt
                    if credentials.is_a?(::String) || credentials.is_a?(::Hash)
                      credentials = Credentials.new credentials, scope: @config.scope
                    end

                    @quota_project_id = @config.quota_project
                    @quota_project_id ||= credentials.quota_project_id if credentials.respond_to? :quota_project_id

                    @operations_client = ::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Operations.new do |config|
                      config.credentials = credentials
                      config.quota_project = @quota_project_id
                      config.endpoint = @config.endpoint
                      config.universe_domain = @config.universe_domain
                    end

                    @consumer_procurement_service_stub = ::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::ServiceStub.new(
                      endpoint: @config.endpoint,
                      endpoint_template: DEFAULT_ENDPOINT_TEMPLATE,
                      universe_domain: @config.universe_domain,
                      credentials: credentials
                    )
                  end

                  ##
                  # Get the associated client for long-running operations.
                  #
                  # @return [::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Operations]
                  #
                  attr_reader :operations_client

                  # Service calls

                  ##
                  # Creates a new {::Google::Cloud::Commerce::Consumer::Procurement::V1::Order Order}.
                  #
                  # This API only supports GCP spend-based committed use
                  # discounts specified by GCP documentation.
                  #
                  # The returned long-running operation is in-progress until the backend
                  # completes the creation of the resource. Once completed, the order is
                  # in
                  # [OrderState.ORDER_STATE_ACTIVE][google.cloud.commerce.consumer.procurement.v1.OrderState.ORDER_STATE_ACTIVE].
                  # In case of failure, the order resource will be removed.
                  #
                  # @overload place_order(request, options = nil)
                  #   Pass arguments to `place_order` via a request object, either of type
                  #   {::Google::Cloud::Commerce::Consumer::Procurement::V1::PlaceOrderRequest} or an equivalent Hash.
                  #
                  #   @param request [::Google::Cloud::Commerce::Consumer::Procurement::V1::PlaceOrderRequest, ::Hash]
                  #     A request object representing the call parameters. Required. To specify no
                  #     parameters, or to keep all the default parameter values, pass an empty Hash.
                  #   @param options [::Gapic::CallOptions, ::Hash]
                  #     Overrides the default settings for this call, e.g, timeout, retries etc. Optional.
                  #
                  # @overload place_order(parent: nil, display_name: nil, line_item_info: nil, request_id: nil)
                  #   Pass arguments to `place_order` via keyword arguments. Note that at
                  #   least one keyword argument is required. To specify no parameters, or to keep all
                  #   the default parameter values, pass an empty Hash as a request object (see above).
                  #
                  #   @param parent [::String]
                  #     Required. The resource name of the parent resource.
                  #     This field has the form  `billingAccounts/{billing-account-id}`.
                  #   @param display_name [::String]
                  #     Required. The user-specified name of the order being placed.
                  #   @param line_item_info [::Array<::Google::Cloud::Commerce::Consumer::Procurement::V1::LineItemInfo, ::Hash>]
                  #     Optional. Places order for offer. Required when an offer-based order is
                  #     being placed.
                  #   @param request_id [::String]
                  #     Optional. A unique identifier for this request.
                  #     The server will ignore subsequent requests that provide a duplicate request
                  #     ID for at least 120 minutes after the first request.
                  #
                  #     The request ID must be a valid
                  #     [UUID](https://en.wikipedia.org/wiki/Universally_unique_identifier#Format).
                  # @yield [result, operation] Access the result along with the TransportOperation object
                  # @yieldparam result [::Gapic::Operation]
                  # @yieldparam operation [::Gapic::Rest::TransportOperation]
                  #
                  # @return [::Gapic::Operation]
                  #
                  # @raise [::Google::Cloud::Error] if the REST call is aborted.
                  #
                  # @example Basic example
                  #   require "google/cloud/commerce/consumer/procurement/v1"
                  #
                  #   # Create a client object. The client can be reused for multiple calls.
                  #   client = Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client.new
                  #
                  #   # Create a request. To set request fields, pass in keyword arguments.
                  #   request = Google::Cloud::Commerce::Consumer::Procurement::V1::PlaceOrderRequest.new
                  #
                  #   # Call the place_order method.
                  #   result = client.place_order request
                  #
                  #   # The returned object is of type Gapic::Operation. You can use it to
                  #   # check the status of an operation, cancel it, or wait for results.
                  #   # Here is how to wait for a response.
                  #   result.wait_until_done! timeout: 60
                  #   if result.response?
                  #     p result.response
                  #   else
                  #     puts "No response received."
                  #   end
                  #
                  def place_order request, options = nil
                    raise ::ArgumentError, "request must be provided" if request.nil?

                    request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::Commerce::Consumer::Procurement::V1::PlaceOrderRequest

                    # Converts hash and nil to an options object
                    options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

                    # Customize the options with defaults
                    call_metadata = @config.rpcs.place_order.metadata.to_h

                    # Set x-goog-api-client and x-goog-user-project headers
                    call_metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                      lib_name: @config.lib_name, lib_version: @config.lib_version,
                      gapic_version: ::Google::Cloud::Commerce::Consumer::Procurement::V1::VERSION,
                      transports_version_send: [:rest]

                    call_metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

                    options.apply_defaults timeout:      @config.rpcs.place_order.timeout,
                                           metadata:     call_metadata,
                                           retry_policy: @config.rpcs.place_order.retry_policy

                    options.apply_defaults timeout:      @config.timeout,
                                           metadata:     @config.metadata,
                                           retry_policy: @config.retry_policy

                    @consumer_procurement_service_stub.place_order request, options do |result, operation|
                      result = ::Gapic::Operation.new result, @operations_client, options: options
                      yield result, operation if block_given?
                      return result
                    end
                  rescue ::Gapic::Rest::Error => e
                    raise ::Google::Cloud::Error.from_error(e)
                  end

                  ##
                  # Returns the requested
                  # {::Google::Cloud::Commerce::Consumer::Procurement::V1::Order Order} resource.
                  #
                  # @overload get_order(request, options = nil)
                  #   Pass arguments to `get_order` via a request object, either of type
                  #   {::Google::Cloud::Commerce::Consumer::Procurement::V1::GetOrderRequest} or an equivalent Hash.
                  #
                  #   @param request [::Google::Cloud::Commerce::Consumer::Procurement::V1::GetOrderRequest, ::Hash]
                  #     A request object representing the call parameters. Required. To specify no
                  #     parameters, or to keep all the default parameter values, pass an empty Hash.
                  #   @param options [::Gapic::CallOptions, ::Hash]
                  #     Overrides the default settings for this call, e.g, timeout, retries etc. Optional.
                  #
                  # @overload get_order(name: nil)
                  #   Pass arguments to `get_order` via keyword arguments. Note that at
                  #   least one keyword argument is required. To specify no parameters, or to keep all
                  #   the default parameter values, pass an empty Hash as a request object (see above).
                  #
                  #   @param name [::String]
                  #     Required. The name of the order to retrieve.
                  # @yield [result, operation] Access the result along with the TransportOperation object
                  # @yieldparam result [::Google::Cloud::Commerce::Consumer::Procurement::V1::Order]
                  # @yieldparam operation [::Gapic::Rest::TransportOperation]
                  #
                  # @return [::Google::Cloud::Commerce::Consumer::Procurement::V1::Order]
                  #
                  # @raise [::Google::Cloud::Error] if the REST call is aborted.
                  #
                  # @example Basic example
                  #   require "google/cloud/commerce/consumer/procurement/v1"
                  #
                  #   # Create a client object. The client can be reused for multiple calls.
                  #   client = Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client.new
                  #
                  #   # Create a request. To set request fields, pass in keyword arguments.
                  #   request = Google::Cloud::Commerce::Consumer::Procurement::V1::GetOrderRequest.new
                  #
                  #   # Call the get_order method.
                  #   result = client.get_order request
                  #
                  #   # The returned object is of type Google::Cloud::Commerce::Consumer::Procurement::V1::Order.
                  #   p result
                  #
                  def get_order request, options = nil
                    raise ::ArgumentError, "request must be provided" if request.nil?

                    request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::Commerce::Consumer::Procurement::V1::GetOrderRequest

                    # Converts hash and nil to an options object
                    options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

                    # Customize the options with defaults
                    call_metadata = @config.rpcs.get_order.metadata.to_h

                    # Set x-goog-api-client and x-goog-user-project headers
                    call_metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                      lib_name: @config.lib_name, lib_version: @config.lib_version,
                      gapic_version: ::Google::Cloud::Commerce::Consumer::Procurement::V1::VERSION,
                      transports_version_send: [:rest]

                    call_metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

                    options.apply_defaults timeout:      @config.rpcs.get_order.timeout,
                                           metadata:     call_metadata,
                                           retry_policy: @config.rpcs.get_order.retry_policy

                    options.apply_defaults timeout:      @config.timeout,
                                           metadata:     @config.metadata,
                                           retry_policy: @config.retry_policy

                    @consumer_procurement_service_stub.get_order request, options do |result, operation|
                      yield result, operation if block_given?
                      return result
                    end
                  rescue ::Gapic::Rest::Error => e
                    raise ::Google::Cloud::Error.from_error(e)
                  end

                  ##
                  # Lists {::Google::Cloud::Commerce::Consumer::Procurement::V1::Order Order}
                  # resources that the user has access to, within the scope of the parent
                  # resource.
                  #
                  # @overload list_orders(request, options = nil)
                  #   Pass arguments to `list_orders` via a request object, either of type
                  #   {::Google::Cloud::Commerce::Consumer::Procurement::V1::ListOrdersRequest} or an equivalent Hash.
                  #
                  #   @param request [::Google::Cloud::Commerce::Consumer::Procurement::V1::ListOrdersRequest, ::Hash]
                  #     A request object representing the call parameters. Required. To specify no
                  #     parameters, or to keep all the default parameter values, pass an empty Hash.
                  #   @param options [::Gapic::CallOptions, ::Hash]
                  #     Overrides the default settings for this call, e.g, timeout, retries etc. Optional.
                  #
                  # @overload list_orders(parent: nil, page_size: nil, page_token: nil, filter: nil)
                  #   Pass arguments to `list_orders` via keyword arguments. Note that at
                  #   least one keyword argument is required. To specify no parameters, or to keep all
                  #   the default parameter values, pass an empty Hash as a request object (see above).
                  #
                  #   @param parent [::String]
                  #     Required. The parent resource to query for orders.
                  #     This field has the form `billingAccounts/{billing-account-id}`.
                  #   @param page_size [::Integer]
                  #     The maximum number of entries requested.
                  #     The default page size is 25 and the maximum page size is 200.
                  #   @param page_token [::String]
                  #     The token for fetching the next page.
                  #   @param filter [::String]
                  #     Filter that you can use to limit the list request.
                  #
                  #     A query string that can match a selected set of attributes
                  #     with string values. For example, `display_name=abc`.
                  #     Supported query attributes are
                  #
                  #     * `display_name`
                  #
                  #     If the query contains special characters other than letters,
                  #     underscore, or digits, the phrase must be quoted with double quotes. For
                  #     example, `display_name="foo:bar"`, where the display name needs to be
                  #     quoted because it contains special character colon.
                  #
                  #     Queries can be combined with `OR`, and `NOT` to form more complex queries.
                  #     You can also group them to force a desired evaluation order.
                  #     For example, `display_name=abc OR display_name=def`.
                  # @yield [result, operation] Access the result along with the TransportOperation object
                  # @yieldparam result [::Gapic::Rest::PagedEnumerable<::Google::Cloud::Commerce::Consumer::Procurement::V1::Order>]
                  # @yieldparam operation [::Gapic::Rest::TransportOperation]
                  #
                  # @return [::Gapic::Rest::PagedEnumerable<::Google::Cloud::Commerce::Consumer::Procurement::V1::Order>]
                  #
                  # @raise [::Google::Cloud::Error] if the REST call is aborted.
                  #
                  # @example Basic example
                  #   require "google/cloud/commerce/consumer/procurement/v1"
                  #
                  #   # Create a client object. The client can be reused for multiple calls.
                  #   client = Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client.new
                  #
                  #   # Create a request. To set request fields, pass in keyword arguments.
                  #   request = Google::Cloud::Commerce::Consumer::Procurement::V1::ListOrdersRequest.new
                  #
                  #   # Call the list_orders method.
                  #   result = client.list_orders request
                  #
                  #   # The returned object is of type Gapic::PagedEnumerable. You can iterate
                  #   # over elements, and API calls will be issued to fetch pages as needed.
                  #   result.each do |item|
                  #     # Each element is of type ::Google::Cloud::Commerce::Consumer::Procurement::V1::Order.
                  #     p item
                  #   end
                  #
                  def list_orders request, options = nil
                    raise ::ArgumentError, "request must be provided" if request.nil?

                    request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::Commerce::Consumer::Procurement::V1::ListOrdersRequest

                    # Converts hash and nil to an options object
                    options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

                    # Customize the options with defaults
                    call_metadata = @config.rpcs.list_orders.metadata.to_h

                    # Set x-goog-api-client and x-goog-user-project headers
                    call_metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                      lib_name: @config.lib_name, lib_version: @config.lib_version,
                      gapic_version: ::Google::Cloud::Commerce::Consumer::Procurement::V1::VERSION,
                      transports_version_send: [:rest]

                    call_metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

                    options.apply_defaults timeout:      @config.rpcs.list_orders.timeout,
                                           metadata:     call_metadata,
                                           retry_policy: @config.rpcs.list_orders.retry_policy

                    options.apply_defaults timeout:      @config.timeout,
                                           metadata:     @config.metadata,
                                           retry_policy: @config.retry_policy

                    @consumer_procurement_service_stub.list_orders request, options do |result, operation|
                      result = ::Gapic::Rest::PagedEnumerable.new @consumer_procurement_service_stub, :list_orders, "orders", request, result, options
                      yield result, operation if block_given?
                      return result
                    end
                  rescue ::Gapic::Rest::Error => e
                    raise ::Google::Cloud::Error.from_error(e)
                  end

                  ##
                  # Configuration class for the ConsumerProcurementService REST API.
                  #
                  # This class represents the configuration for ConsumerProcurementService REST,
                  # providing control over timeouts, retry behavior, logging, transport
                  # parameters, and other low-level controls. Certain parameters can also be
                  # applied individually to specific RPCs. See
                  # {::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client::Configuration::Rpcs}
                  # for a list of RPCs that can be configured independently.
                  #
                  # Configuration can be applied globally to all clients, or to a single client
                  # on construction.
                  #
                  # @example
                  #
                  #   # Modify the global config, setting the timeout for
                  #   # place_order to 20 seconds,
                  #   # and all remaining timeouts to 10 seconds.
                  #   ::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client.configure do |config|
                  #     config.timeout = 10.0
                  #     config.rpcs.place_order.timeout = 20.0
                  #   end
                  #
                  #   # Apply the above configuration only to a new client.
                  #   client = ::Google::Cloud::Commerce::Consumer::Procurement::V1::ConsumerProcurementService::Rest::Client.new do |config|
                  #     config.timeout = 10.0
                  #     config.rpcs.place_order.timeout = 20.0
                  #   end
                  #
                  # @!attribute [rw] endpoint
                  #   A custom service endpoint, as a hostname or hostname:port. The default is
                  #   nil, indicating to use the default endpoint in the current universe domain.
                  #   @return [::String,nil]
                  # @!attribute [rw] credentials
                  #   Credentials to send with calls. You may provide any of the following types:
                  #    *  (`String`) The path to a service account key file in JSON format
                  #    *  (`Hash`) A service account key as a Hash
                  #    *  (`Google::Auth::Credentials`) A googleauth credentials object
                  #       (see the [googleauth docs](https://rubydoc.info/gems/googleauth/Google/Auth/Credentials))
                  #    *  (`Signet::OAuth2::Client`) A signet oauth2 client object
                  #       (see the [signet docs](https://rubydoc.info/gems/signet/Signet/OAuth2/Client))
                  #    *  (`nil`) indicating no credentials
                  #   @return [::Object]
                  # @!attribute [rw] scope
                  #   The OAuth scopes
                  #   @return [::Array<::String>]
                  # @!attribute [rw] lib_name
                  #   The library name as recorded in instrumentation and logging
                  #   @return [::String]
                  # @!attribute [rw] lib_version
                  #   The library version as recorded in instrumentation and logging
                  #   @return [::String]
                  # @!attribute [rw] timeout
                  #   The call timeout in seconds.
                  #   @return [::Numeric]
                  # @!attribute [rw] metadata
                  #   Additional headers to be sent with the call.
                  #   @return [::Hash{::Symbol=>::String}]
                  # @!attribute [rw] retry_policy
                  #   The retry policy. The value is a hash with the following keys:
                  #    *  `:initial_delay` (*type:* `Numeric`) - The initial delay in seconds.
                  #    *  `:max_delay` (*type:* `Numeric`) - The max delay in seconds.
                  #    *  `:multiplier` (*type:* `Numeric`) - The incremental backoff multiplier.
                  #    *  `:retry_codes` (*type:* `Array<String>`) - The error codes that should
                  #       trigger a retry.
                  #   @return [::Hash]
                  # @!attribute [rw] quota_project
                  #   A separate project against which to charge quota.
                  #   @return [::String]
                  # @!attribute [rw] universe_domain
                  #   The universe domain within which to make requests. This determines the
                  #   default endpoint URL. The default value of nil uses the environment
                  #   universe (usually the default "googleapis.com" universe).
                  #   @return [::String,nil]
                  #
                  class Configuration
                    extend ::Gapic::Config

                    # @private
                    # The endpoint specific to the default "googleapis.com" universe. Deprecated.
                    DEFAULT_ENDPOINT = "cloudcommerceconsumerprocurement.googleapis.com"

                    config_attr :endpoint,      nil, ::String, nil
                    config_attr :credentials,   nil do |value|
                      allowed = [::String, ::Hash, ::Proc, ::Symbol, ::Google::Auth::Credentials, ::Signet::OAuth2::Client, nil]
                      allowed.any? { |klass| klass === value }
                    end
                    config_attr :scope,         nil, ::String, ::Array, nil
                    config_attr :lib_name,      nil, ::String, nil
                    config_attr :lib_version,   nil, ::String, nil
                    config_attr :timeout,       nil, ::Numeric, nil
                    config_attr :metadata,      nil, ::Hash, nil
                    config_attr :retry_policy,  nil, ::Hash, ::Proc, nil
                    config_attr :quota_project, nil, ::String, nil
                    config_attr :universe_domain, nil, ::String, nil

                    # @private
                    def initialize parent_config = nil
                      @parent_config = parent_config unless parent_config.nil?

                      yield self if block_given?
                    end

                    ##
                    # Configurations for individual RPCs
                    # @return [Rpcs]
                    #
                    def rpcs
                      @rpcs ||= begin
                        parent_rpcs = nil
                        parent_rpcs = @parent_config.rpcs if defined?(@parent_config) && @parent_config.respond_to?(:rpcs)
                        Rpcs.new parent_rpcs
                      end
                    end

                    ##
                    # Configuration RPC class for the ConsumerProcurementService API.
                    #
                    # Includes fields providing the configuration for each RPC in this service.
                    # Each configuration object is of type `Gapic::Config::Method` and includes
                    # the following configuration fields:
                    #
                    #  *  `timeout` (*type:* `Numeric`) - The call timeout in seconds
                    #  *  `metadata` (*type:* `Hash{Symbol=>String}`) - Additional headers
                    #  *  `retry_policy (*type:* `Hash`) - The retry policy. The policy fields
                    #     include the following keys:
                    #      *  `:initial_delay` (*type:* `Numeric`) - The initial delay in seconds.
                    #      *  `:max_delay` (*type:* `Numeric`) - The max delay in seconds.
                    #      *  `:multiplier` (*type:* `Numeric`) - The incremental backoff multiplier.
                    #      *  `:retry_codes` (*type:* `Array<String>`) - The error codes that should
                    #         trigger a retry.
                    #
                    class Rpcs
                      ##
                      # RPC-specific configuration for `place_order`
                      # @return [::Gapic::Config::Method]
                      #
                      attr_reader :place_order
                      ##
                      # RPC-specific configuration for `get_order`
                      # @return [::Gapic::Config::Method]
                      #
                      attr_reader :get_order
                      ##
                      # RPC-specific configuration for `list_orders`
                      # @return [::Gapic::Config::Method]
                      #
                      attr_reader :list_orders

                      # @private
                      def initialize parent_rpcs = nil
                        place_order_config = parent_rpcs.place_order if parent_rpcs.respond_to? :place_order
                        @place_order = ::Gapic::Config::Method.new place_order_config
                        get_order_config = parent_rpcs.get_order if parent_rpcs.respond_to? :get_order
                        @get_order = ::Gapic::Config::Method.new get_order_config
                        list_orders_config = parent_rpcs.list_orders if parent_rpcs.respond_to? :list_orders
                        @list_orders = ::Gapic::Config::Method.new list_orders_config

                        yield self if block_given?
                      end
                    end
                  end
                end
              end
            end
          end
        end
      end
    end
  end
end