Class: Google::Cloud::DiscoveryEngine::V1beta::RecommendationService::Rest::Client

Inherits:
Object
  • Object
show all
Includes:
Paths
Defined in:
lib/google/cloud/discovery_engine/v1beta/recommendation_service/rest/client.rb

Overview

REST client for the RecommendationService service.

Service for making recommendations.

Defined Under Namespace

Classes: Configuration

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Paths

#document_path, #serving_config_path

Constructor Details

#initialize {|config| ... } ⇒ Client

Create a new RecommendationService REST client object.

Examples:


# Create a client using the default configuration
client = ::Google::Cloud::DiscoveryEngine::V1beta::RecommendationService::Rest::Client.new

# Create a client using a custom configuration
client = ::Google::Cloud::DiscoveryEngine::V1beta::RecommendationService::Rest::Client.new do |config|
  config.timeout = 10.0
end

Yields:

  • (config) —

    Configure the RecommendationService client.

Yield Parameters:



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# File 'lib/google/cloud/discovery_engine/v1beta/recommendation_service/rest/client.rb', line 116

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 == 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

  @recommendation_service_stub = ::Google::Cloud::DiscoveryEngine::V1beta::RecommendationService::Rest::ServiceStub.new endpoint: @config.endpoint, credentials: credentials
end

Class Method Details

.configure {|config| ... } ⇒ Client::Configuration

Configure the RecommendationService Client class.

See Configuration for a description of the configuration fields.

Examples:


# Modify the configuration for all RecommendationService clients
::Google::Cloud::DiscoveryEngine::V1beta::RecommendationService::Rest::Client.configure do |config|
  config.timeout = 10.0
end

Yields:

  • (config) —

    Configure the Client client.

Yield Parameters:

Returns:



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# File 'lib/google/cloud/discovery_engine/v1beta/recommendation_service/rest/client.rb', line 58

def self.configure
  @configure ||= begin
    namespace = ["Google", "Cloud", "DiscoveryEngine", "V1beta"]
    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.timeout = 5.0
    default_config.retry_policy = {
      initial_delay: 0.1, max_delay: 5.0, multiplier: 1.3, retry_codes: [14]
    }

    default_config
  end
  yield @configure if block_given?
  @configure
end

Instance Method Details

#configure {|config| ... } ⇒ Client::Configuration

Configure the RecommendationService 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 configure.

See Configuration for a description of the configuration fields.

Yields:

  • (config) —

    Configure the Client client.

Yield Parameters:

Returns:



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# File 'lib/google/cloud/discovery_engine/v1beta/recommendation_service/rest/client.rb', line 95

def configure
  yield @config if block_given?
  @config
end

#recommend(request, options = nil) ⇒ ::Google::Cloud::DiscoveryEngine::V1beta::RecommendResponse #recommend(serving_config: nil, user_event: nil, page_size: nil, filter: nil, validate_only: nil, params: nil, user_labels: nil) ⇒ ::Google::Cloud::DiscoveryEngine::V1beta::RecommendResponse

Makes a recommendation, which requires a contextual user event.

Overloads:

  • #recommend(request, options = nil) ⇒ ::Google::Cloud::DiscoveryEngine::V1beta::RecommendResponse

    Pass arguments to recommend via a request object, either of type Google::Cloud::DiscoveryEngine::V1beta::RecommendRequest or an equivalent Hash.

    Parameters:

    • request (::Google::Cloud::DiscoveryEngine::V1beta::RecommendRequest, ::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.

    • options (::Gapic::CallOptions, ::Hash) (defaults to: nil) —

      Overrides the default settings for this call, e.g, timeout, retries etc. Optional.

  • #recommend(serving_config: nil, user_event: nil, page_size: nil, filter: nil, validate_only: nil, params: nil, user_labels: nil) ⇒ ::Google::Cloud::DiscoveryEngine::V1beta::RecommendResponse

    Pass arguments to recommend 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).

    Parameters:

    • serving_config (::String) (defaults to: nil) —

      Required. Full resource name of the format: projects/*/locations/global/collections/*/dataStores/*/servingConfigs/*

      Before you can request recommendations from your model, you must create at least one serving config for it.

    • user_event (::Google::Cloud::DiscoveryEngine::V1beta::UserEvent, ::Hash) (defaults to: nil) —

      Required. Context about the user, what they are looking at and what action they took to trigger the Recommend request. Note that this user event detail won't be ingested to userEvent logs. Thus, a separate userEvent write request is required for event logging.

      Don't set UserEvent.user_pseudo_id or UserEvent.user_info.user_id to the same fixed ID for different users. If you are trying to receive non-personalized recommendations (not recommended; this can negatively impact model performance), instead set UserEvent.user_pseudo_id to a random unique ID and leave UserEvent.user_info.user_id unset.

    • page_size (::Integer) (defaults to: nil) —

      Maximum number of results to return. Set this property to the number of recommendation results needed. If zero, the service will choose a reasonable default. The maximum allowed value is 100. Values above 100 will be coerced to 100.

    • filter (::String) (defaults to: nil) —

      Filter for restricting recommendation results with a length limit of 5,000 characters. Currently, only filter expressions on the filter_tags attribute is supported.

      Examples:

      • (filter_tags: ANY("Red", "Blue") OR filter_tags: ANY("Hot", "Cold"))
      • (filter_tags: ANY("Red", "Blue")) AND NOT (filter_tags: ANY("Green"))

      If your filter blocks all results, the API will return generic (unfiltered) popular Documents. If you only want results strictly matching the filters, set strictFiltering to True in RecommendRequest.params to receive empty results instead.

      Note that the API will never return Documents with storageStatus of EXPIRED or DELETED regardless of filter choices.

    • validate_only (::Boolean) (defaults to: nil) —

      Use validate only mode for this recommendation query. If set to true, a fake model will be used that returns arbitrary Document IDs. Note that the validate only mode should only be used for testing the API, or if the model is not ready.

    • params (::Hash{::String => ::Google::Protobuf::Value, ::Hash}) (defaults to: nil) —

      Additional domain specific parameters for the recommendations.

      Allowed values:

      • returnDocument: Boolean. If set to true, the associated Document object will be returned in RecommendResponse.RecommendationResult.document.
      • returnScore: Boolean. If set to true, the recommendation 'score' corresponding to each returned Document will be set in RecommendResponse.RecommendationResult.metadata. The given 'score' indicates the probability of a Document conversion given the user's context and history.
      • strictFiltering: Boolean. True by default. If set to false, the service will return generic (unfiltered) popular Documents instead of empty if your filter blocks all recommendation results.
      • diversityLevel: String. Default empty. If set to be non-empty, then it needs to be one of:
        • no-diversity
        • low-diversity
        • medium-diversity
        • high-diversity
        • auto-diversity This gives request-level control and adjusts recommendation results based on Document category.
    • user_labels (::Hash{::String => ::String}) (defaults to: nil) —

      The user labels applied to a resource must meet the following requirements:

      • Each resource can have multiple labels, up to a maximum of 64.
      • Each label must be a key-value pair.
      • Keys have a minimum length of 1 character and a maximum length of 63 characters and cannot be empty. Values can be empty and have a maximum length of 63 characters.
      • Keys and values can contain only lowercase letters, numeric characters, underscores, and dashes. All characters must use UTF-8 encoding, and international characters are allowed.
      • The key portion of a label must be unique. However, you can use the same key with multiple resources.
      • Keys must start with a lowercase letter or international character.

      See Requirements for labels for more details.

Yields:

  • (result, operation) —

    Access the result along with the TransportOperation object

Yield Parameters:

Returns:

Raises:

  • (::Google::Cloud::Error) —

    if the REST call is aborted.



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# File 'lib/google/cloud/discovery_engine/v1beta/recommendation_service/rest/client.rb', line 264

def recommend request, options = nil
  raise ::ArgumentError, "request must be provided" if request.nil?

  request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::DiscoveryEngine::V1beta::RecommendRequest

  # 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.recommend.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::DiscoveryEngine::V1beta::VERSION,
    transports_version_send: [:rest]

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

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

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

  @recommendation_service_stub.recommend 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