Class: Google::Cloud::Dialogflow::V2::SessionsClient

Inherits:
Object
  • Object
show all
Defined in:
lib/google/cloud/dialogflow/v2/sessions_client.rb

Overview

A session represents an interaction with a user. You retrieve user input and pass it to the DetectIntent (or StreamingDetectIntent) method to determine user intent and respond.

Constant Summary collapse

SERVICE_ADDRESS =

The default address of the service.

"dialogflow.googleapis.com".freeze
DEFAULT_SERVICE_PORT =

The default port of the service.

443
GRPC_INTERCEPTORS =

The default set of gRPC interceptors.

[]
DEFAULT_TIMEOUT = 
30
ALL_SCOPES =

The scopes needed to make gRPC calls to all of the methods defined in this service.

[
  "https://www.googleapis.com/auth/cloud-platform"
].freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(credentials: nil, scopes: ALL_SCOPES, client_config: {}, timeout: DEFAULT_TIMEOUT, metadata: nil, exception_transformer: nil, lib_name: nil, lib_version: "") ⇒ SessionsClient

Returns a new instance of SessionsClient

Parameters:

  • credentials (Google::Auth::Credentials, String, Hash, GRPC::Core::Channel, GRPC::Core::ChannelCredentials, Proc) —

    Provides the means for authenticating requests made by the client. This parameter can be many types. A Google::Auth::Credentials uses a the properties of its represented keyfile for authenticating requests made by this client. A String will be treated as the path to the keyfile to be used for the construction of credentials for this client. A Hash will be treated as the contents of a keyfile to be used for the construction of credentials for this client. A GRPC::Core::Channel will be used to make calls through. A GRPC::Core::ChannelCredentials for the setting up the RPC client. The channel credentials should already be composed with a GRPC::Core::CallCredentials object. A Proc will be used as an updater_proc for the Grpc channel. The proc transforms the metadata for requests, generally, to give OAuth credentials.

  • scopes (Array<String>) —

    The OAuth scopes for this service. This parameter is ignored if an updater_proc is supplied.

  • client_config (Hash) —

    A Hash for call options for each method. See Google::Gax#construct_settings for the structure of this data. Falls back to the default config if not specified or the specified config is missing data points.

  • timeout (Numeric) —

    The default timeout, in seconds, for calls made through this client.

  • metadata (Hash) —

    Default metadata to be sent with each request. This can be overridden on a per call basis.

  • exception_transformer (Proc) —

    An optional proc that intercepts any exceptions raised during an API call to inject custom error handling.



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# File 'lib/google/cloud/dialogflow/v2/sessions_client.rb', line 108

def initialize \
    credentials: nil,
    scopes: ALL_SCOPES,
    client_config: {},
    timeout: DEFAULT_TIMEOUT,
    metadata: nil,
    exception_transformer: nil,
    lib_name: nil,
    lib_version: ""
  # These require statements are intentionally placed here to initialize
  # the gRPC module only when it's required.
  # See https://github.com/googleapis/toolkit/issues/446
  require "google/gax/grpc"
  require "google/cloud/dialogflow/v2/session_services_pb"

  credentials ||= Google::Cloud::Dialogflow::V2::Credentials.default

  if credentials.is_a?(String) || credentials.is_a?(Hash)
    updater_proc = Google::Cloud::Dialogflow::V2::Credentials.new(credentials).updater_proc
  end
  if credentials.is_a?(GRPC::Core::Channel)
    channel = credentials
  end
  if credentials.is_a?(GRPC::Core::ChannelCredentials)
    chan_creds = credentials
  end
  if credentials.is_a?(Proc)
    updater_proc = credentials
  end
  if credentials.is_a?(Google::Auth::Credentials)
    updater_proc = credentials.updater_proc
  end

  package_version = Gem.loaded_specs['google-cloud-dialogflow'].version.version

  google_api_client = "gl-ruby/#{RUBY_VERSION}"
  google_api_client << " #{lib_name}/#{lib_version}" if lib_name
  google_api_client << " gapic/#{package_version} gax/#{Google::Gax::VERSION}"
  google_api_client << " grpc/#{GRPC::VERSION}"
  google_api_client.freeze

  headers = { :"x-goog-api-client" => google_api_client }
  headers.merge!(metadata) unless metadata.nil?
  client_config_file = Pathname.new(__dir__).join(
    "sessions_client_config.json"
  )
  defaults = client_config_file.open do |f|
    Google::Gax.construct_settings(
      "google.cloud.dialogflow.v2.Sessions",
      JSON.parse(f.read),
      client_config,
      Google::Gax::Grpc::STATUS_CODE_NAMES,
      timeout,
      errors: Google::Gax::Grpc::API_ERRORS,
      metadata: headers
    )
  end

  # Allow overriding the service path/port in subclasses.
  service_path = self.class::SERVICE_ADDRESS
  port = self.class::DEFAULT_SERVICE_PORT
  interceptors = self.class::GRPC_INTERCEPTORS
  @sessions_stub = Google::Gax::Grpc.create_stub(
    service_path,
    port,
    chan_creds: chan_creds,
    channel: channel,
    updater_proc: updater_proc,
    scopes: scopes,
    interceptors: interceptors,
    &Google::Cloud::Dialogflow::V2::Sessions::Stub.method(:new)
  )

  @detect_intent = Google::Gax.create_api_call(
    @sessions_stub.method(:detect_intent),
    defaults["detect_intent"],
    exception_transformer: exception_transformer
  )
  @streaming_detect_intent = Google::Gax.create_api_call(
    @sessions_stub.method(:streaming_detect_intent),
    defaults["streaming_detect_intent"],
    exception_transformer: exception_transformer
  )
end

Instance Attribute Details

#sessions_stub ⇒ Google::Cloud::Dialogflow::V2::Sessions::Stub (readonly)

Returns:

  • (Google::Cloud::Dialogflow::V2::Sessions::Stub) 


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# File 'lib/google/cloud/dialogflow/v2/sessions_client.rb', line 41

class SessionsClient
  attr_reader :sessions_stub

  # The default address of the service.
  SERVICE_ADDRESS = "dialogflow.googleapis.com".freeze

  # The default port of the service.
  DEFAULT_SERVICE_PORT = 443

  # The default set of gRPC interceptors.
  GRPC_INTERCEPTORS = []

  DEFAULT_TIMEOUT = 30

  # The scopes needed to make gRPC calls to all of the methods defined in
  # this service.
  ALL_SCOPES = [
    "https://www.googleapis.com/auth/cloud-platform"
  ].freeze


  SESSION_PATH_TEMPLATE = Google::Gax::PathTemplate.new(
    "projects/{project}/agent/sessions/{session}"
  )

  private_constant :SESSION_PATH_TEMPLATE

  # Returns a fully-qualified session resource name string.
  # @param project [String]
  # @param session [String]
  # @return [String]
  def self.session_path project, session
    SESSION_PATH_TEMPLATE.render(
      :"project" => project,
      :"session" => session
    )
  end

  # @param credentials [Google::Auth::Credentials, String, Hash, GRPC::Core::Channel, GRPC::Core::ChannelCredentials, Proc]
  #   Provides the means for authenticating requests made by the client. This parameter can
  #   be many types.
  #   A `Google::Auth::Credentials` uses a the properties of its represented keyfile for
  #   authenticating requests made by this client.
  #   A `String` will be treated as the path to the keyfile to be used for the construction of
  #   credentials for this client.
  #   A `Hash` will be treated as the contents of a keyfile to be used for the construction of
  #   credentials for this client.
  #   A `GRPC::Core::Channel` will be used to make calls through.
  #   A `GRPC::Core::ChannelCredentials` for the setting up the RPC client. The channel credentials
  #   should already be composed with a `GRPC::Core::CallCredentials` object.
  #   A `Proc` will be used as an updater_proc for the Grpc channel. The proc transforms the
  #   metadata for requests, generally, to give OAuth credentials.
  # @param scopes [Array<String>]
  #   The OAuth scopes for this service. This parameter is ignored if
  #   an updater_proc is supplied.
  # @param client_config [Hash]
  #   A Hash for call options for each method. See
  #   Google::Gax#construct_settings for the structure of
  #   this data. Falls back to the default config if not specified
  #   or the specified config is missing data points.
  # @param timeout [Numeric]
  #   The default timeout, in seconds, for calls made through this client.
  # @param metadata [Hash]
  #   Default metadata to be sent with each request. This can be overridden on a per call basis.
  # @param exception_transformer [Proc]
  #   An optional proc that intercepts any exceptions raised during an API call to inject
  #   custom error handling.
  def initialize \
      credentials: nil,
      scopes: ALL_SCOPES,
      client_config: {},
      timeout: DEFAULT_TIMEOUT,
      metadata: nil,
      exception_transformer: nil,
      lib_name: nil,
      lib_version: ""
    # These require statements are intentionally placed here to initialize
    # the gRPC module only when it's required.
    # See https://github.com/googleapis/toolkit/issues/446
    require "google/gax/grpc"
    require "google/cloud/dialogflow/v2/session_services_pb"

    credentials ||= Google::Cloud::Dialogflow::V2::Credentials.default

    if credentials.is_a?(String) || credentials.is_a?(Hash)
      updater_proc = Google::Cloud::Dialogflow::V2::Credentials.new(credentials).updater_proc
    end
    if credentials.is_a?(GRPC::Core::Channel)
      channel = credentials
    end
    if credentials.is_a?(GRPC::Core::ChannelCredentials)
      chan_creds = credentials
    end
    if credentials.is_a?(Proc)
      updater_proc = credentials
    end
    if credentials.is_a?(Google::Auth::Credentials)
      updater_proc = credentials.updater_proc
    end

    package_version = Gem.loaded_specs['google-cloud-dialogflow'].version.version

    google_api_client = "gl-ruby/#{RUBY_VERSION}"
    google_api_client << " #{lib_name}/#{lib_version}" if lib_name
    google_api_client << " gapic/#{package_version} gax/#{Google::Gax::VERSION}"
    google_api_client << " grpc/#{GRPC::VERSION}"
    google_api_client.freeze

    headers = { :"x-goog-api-client" => google_api_client }
    headers.merge!(metadata) unless metadata.nil?
    client_config_file = Pathname.new(__dir__).join(
      "sessions_client_config.json"
    )
    defaults = client_config_file.open do |f|
      Google::Gax.construct_settings(
        "google.cloud.dialogflow.v2.Sessions",
        JSON.parse(f.read),
        client_config,
        Google::Gax::Grpc::STATUS_CODE_NAMES,
        timeout,
        errors: Google::Gax::Grpc::API_ERRORS,
        metadata: headers
      )
    end

    # Allow overriding the service path/port in subclasses.
    service_path = self.class::SERVICE_ADDRESS
    port = self.class::DEFAULT_SERVICE_PORT
    interceptors = self.class::GRPC_INTERCEPTORS
    @sessions_stub = Google::Gax::Grpc.create_stub(
      service_path,
      port,
      chan_creds: chan_creds,
      channel: channel,
      updater_proc: updater_proc,
      scopes: scopes,
      interceptors: interceptors,
      &Google::Cloud::Dialogflow::V2::Sessions::Stub.method(:new)
    )

    @detect_intent = Google::Gax.create_api_call(
      @sessions_stub.method(:detect_intent),
      defaults["detect_intent"],
      exception_transformer: exception_transformer
    )
    @streaming_detect_intent = Google::Gax.create_api_call(
      @sessions_stub.method(:streaming_detect_intent),
      defaults["streaming_detect_intent"],
      exception_transformer: exception_transformer
    )
  end

  # Service calls

  # Processes a natural language query and returns structured, actionable data
  # as a result. This method is not idempotent, because it may cause contexts
  # and session entity types to be updated, which in turn might affect
  # results of future queries.
  #
  # @param session [String]
  #   Required. The name of the session this query is sent to. Format:
  #   +projects/<Project ID>/agent/sessions/<Session ID>+. It's up to the API
  #   caller to choose an appropriate session ID. It can be a random number or
  #   some type of user identifier (preferably hashed). The length of the session
  #   ID must not exceed 36 bytes.
  # @param query_input [Google::Cloud::Dialogflow::V2::QueryInput | Hash]
  #   Required. The input specification. It can be set to:
  #
  #   1.  an audio config
  #       which instructs the speech recognizer how to process the speech audio,
  #
  #   2.  a conversational query in the form of text, or
  #
  #   3.  an event that specifies which intent to trigger.
  #   A hash of the same form as `Google::Cloud::Dialogflow::V2::QueryInput`
  #   can also be provided.
  # @param query_params [Google::Cloud::Dialogflow::V2::QueryParameters | Hash]
  #   Optional. The parameters of this query.
  #   A hash of the same form as `Google::Cloud::Dialogflow::V2::QueryParameters`
  #   can also be provided.
  # @param input_audio [String]
  #   Optional. The natural language speech audio to be processed. This field
  #   should be populated iff +query_input+ is set to an input audio config.
  #   A single request can contain up to 1 minute of speech audio data.
  # @param options [Google::Gax::CallOptions]
  #   Overrides the default settings for this call, e.g, timeout,
  #   retries, etc.
  # @yield [result, operation] Access the result along with the RPC operation
  # @yieldparam result [Google::Cloud::Dialogflow::V2::DetectIntentResponse]
  # @yieldparam operation [GRPC::ActiveCall::Operation]
  # @return [Google::Cloud::Dialogflow::V2::DetectIntentResponse]
  # @raise [Google::Gax::GaxError] if the RPC is aborted.
  # @example
  #   require "google/cloud/dialogflow"
  #
  #   sessions_client = Google::Cloud::Dialogflow::Sessions.new(version: :v2)
  #   formatted_session = Google::Cloud::Dialogflow::V2::SessionsClient.session_path("[PROJECT]", "[SESSION]")
  #
  #   # TODO: Initialize +query_input+:
  #   query_input = {}
  #   response = sessions_client.detect_intent(formatted_session, query_input)

  def detect_intent \
      session,
      query_input,
      query_params: nil,
      input_audio: nil,
      options: nil,
      &block
    req = {
      session: session,
      query_input: query_input,
      query_params: query_params,
      input_audio: input_audio
    }.delete_if { |_, v| v.nil? }
    req = Google::Gax::to_proto(req, Google::Cloud::Dialogflow::V2::DetectIntentRequest)
    @detect_intent.call(req, options, &block)
  end

  # Processes a natural language query in audio format in a streaming fashion
  # and returns structured, actionable data as a result. This method is only
  # available via the gRPC API (not REST).
  #
  # @param reqs [Enumerable<Google::Cloud::Dialogflow::V2::StreamingDetectIntentRequest>]
  #   The input requests.
  # @param options [Google::Gax::CallOptions]
  #   Overrides the default settings for this call, e.g, timeout,
  #   retries, etc.
  # @return [Enumerable<Google::Cloud::Dialogflow::V2::StreamingDetectIntentResponse>]
  #   An enumerable of Google::Cloud::Dialogflow::V2::StreamingDetectIntentResponse instances.
  #
  # @raise [Google::Gax::GaxError] if the RPC is aborted.
  #
  # @note
  #   EXPERIMENTAL:
  #     Streaming requests are still undergoing review.
  #     This method interface might change in the future.
  #
  # @example
  #   require "google/cloud/dialogflow"
  #
  #   sessions_client = Google::Cloud::Dialogflow::Sessions.new(version: :v2)
  #
  #   # TODO: Initialize +session+:
  #   session = ''
  #
  #   # TODO: Initialize +query_input+:
  #   query_input = {}
  #   request = { session: session, query_input: query_input }
  #   requests = [request]
  #   sessions_client.streaming_detect_intent(requests).each do |element|
  #     # Process element.
  #   end

  def streaming_detect_intent reqs, options: nil
    request_protos = reqs.lazy.map do |req|
      Google::Gax::to_proto(req, Google::Cloud::Dialogflow::V2::StreamingDetectIntentRequest)
    end
    @streaming_detect_intent.call(request_protos, options)
  end
end

Class Method Details

.session_path(project, session) ⇒ String

Returns a fully-qualified session resource name string.

Parameters:

  • project (String)
  • session (String)

Returns:

  • (String) 


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# File 'lib/google/cloud/dialogflow/v2/sessions_client.rb', line 72

def self.session_path project, session
  SESSION_PATH_TEMPLATE.render(
    :"project" => project,
    :"session" => session
  )
end

Instance Method Details

#detect_intent(session, query_input, query_params: nil, input_audio: nil, options: nil) {|result, operation| ... } ⇒ Google::Cloud::Dialogflow::V2::DetectIntentResponse

Processes a natural language query and returns structured, actionable data as a result. This method is not idempotent, because it may cause contexts and session entity types to be updated, which in turn might affect results of future queries.

Examples:

require "google/cloud/dialogflow"

sessions_client = Google::Cloud::Dialogflow::Sessions.new(version: :v2)
formatted_session = Google::Cloud::Dialogflow::V2::SessionsClient.session_path("[PROJECT]", "[SESSION]")

# TODO: Initialize +query_input+:
query_input = {}
response = sessions_client.detect_intent(formatted_session, query_input)

Parameters:

  • session (String) —

    Required. The name of the session this query is sent to. Format: +projects//agent/sessions/+. It's up to the API caller to choose an appropriate session ID. It can be a random number or some type of user identifier (preferably hashed). The length of the session ID must not exceed 36 bytes.

  • query_input (Google::Cloud::Dialogflow::V2::QueryInput | Hash) —

    Required. The input specification. It can be set to:

    1. an audio config which instructs the speech recognizer how to process the speech audio,

    2. a conversational query in the form of text, or

    3. an event that specifies which intent to trigger. A hash of the same form as Google::Cloud::Dialogflow::V2::QueryInput can also be provided.

  • query_params (Google::Cloud::Dialogflow::V2::QueryParameters | Hash) —

    Optional. The parameters of this query. A hash of the same form as Google::Cloud::Dialogflow::V2::QueryParameters can also be provided.

  • input_audio (String) —

    Optional. The natural language speech audio to be processed. This field should be populated iff +query_input+ is set to an input audio config. A single request can contain up to 1 minute of speech audio data.

  • options (Google::Gax::CallOptions) —

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

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/dialogflow/v2/sessions_client.rb', line 243

def detect_intent \
    session,
    query_input,
    query_params: nil,
    input_audio: nil,
    options: nil,
    &block
  req = {
    session: session,
    query_input: query_input,
    query_params: query_params,
    input_audio: input_audio
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Cloud::Dialogflow::V2::DetectIntentRequest)
  @detect_intent.call(req, options, &block)
end

#streaming_detect_intent(reqs, options: nil) ⇒ Enumerable<Google::Cloud::Dialogflow::V2::StreamingDetectIntentResponse>

Note:

EXPERIMENTAL: Streaming requests are still undergoing review. This method interface might change in the future.

Processes a natural language query in audio format in a streaming fashion and returns structured, actionable data as a result. This method is only available via the gRPC API (not REST).

Examples:

require "google/cloud/dialogflow"

sessions_client = Google::Cloud::Dialogflow::Sessions.new(version: :v2)

# TODO: Initialize +session+:
session = ''

# TODO: Initialize +query_input+:
query_input = {}
request = { session: session, query_input: query_input }
requests = [request]
sessions_client.streaming_detect_intent(requests).each do |element|
  # Process element.
end

Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/dialogflow/v2/sessions_client.rb', line 295

def streaming_detect_intent reqs, options: nil
  request_protos = reqs.lazy.map do |req|
    Google::Gax::to_proto(req, Google::Cloud::Dialogflow::V2::StreamingDetectIntentRequest)
  end
  @streaming_detect_intent.call(request_protos, options)
end