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

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 



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# File 'lib/google/cloud/dialogflow/v2/sessions_client.rb', line 110

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

Class Method Details

.session_path(project, session) ⇒ String

Returns a fully-qualified session resource name string.



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# File 'lib/google/cloud/dialogflow/v2/sessions_client.rb', line 74

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)

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/dialogflow/v2/sessions_client.rb', line 245

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

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/dialogflow/v2/sessions_client.rb', line 297

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