Class: NluAdapter::Adapters::WatsonAssistant

Inherits:
Object
  • Object
show all
Includes:
IBMWatson, ParseHelper
Defined in:
lib/nlu_adapter/watson_assistant.rb

Overview

IBM Watson Assistant wrapper class

Defined Under Namespace

Classes: Intent

Instance Method Summary collapse

Methods included from ParseHelper

#bulk_parse, #parse_test, #parse_test_report

Constructor Details

#initialize(options = {}) ⇒ WatsonAssistant

Constructor



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# File 'lib/nlu_adapter/watson_assistant.rb', line 14

def initialize(options = {})
  @url = options[:url] || "https://gateway-lon.watsonplatform.net/assistant/api"
  @version = options[:version] || "2018-09-20"
  @workspace_id = ENV["WATSON_WORKSPACE_ID"]
  begin
    @assistant = AssistantV1.new(
      iam_apikey: ENV["WATSON_API_KEY"],
      version: @version,
      url: @url
    )
  rescue WatsonApiException => ex
    puts "Error: #{ex.inspect}"
  end
end

Instance Method Details

#create_intent(intent) ⇒ Intent

TODO:

convert response -> Intent

Given an Intent object, create/update it in Dialogflow



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# File 'lib/nlu_adapter/watson_assistant.rb', line 101

def create_intent(intent)
  #check: to create / update
  i = intent.to_h
  if !intent.id
    response = @assistant.create_intent(
      workspace_id: @workspace_id,
      intent: i[:name],
      description: i[:description],
      examples: i[:examples]
    )
  else
    response = @assistant.update_intent(
      workspace_id: @workspace_id,
      intent: intent.id,
      new_examples: i[:examples],
      new_description: i[:description],
      new_intent: i[:name]
    )

  end
end

#get_intent(name) ⇒ Intent

Get an instance of Intent, if it exists else nil



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# File 'lib/nlu_adapter/watson_assistant.rb', line 58

def get_intent(name)
  begin
    response = @assistant.get_intent(
      workspace_id: @workspace_id,
      intent: name,
      export: true
    )

    return Intent.new({id: response.result['intent'], #for is update check
      name: response.result['intent'],
      description: response.result['description'],
      utterences: response.result['examples'].map { |e| e['text']} })

  rescue WatsonApiException => ex
    puts "Error: #{ex.inspect}"
  end
  return nil
end

#new_intent(name, description, utterences = []) ⇒ Intent

Get a new instance of Intent



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# File 'lib/nlu_adapter/watson_assistant.rb', line 83

def new_intent(name, description, utterences = [])
  i = get_intent(name)

  i = Intent.new if !i
  i.name = name
  i.description = description
  i.utterences = utterences

  return i
end

#parse(text) ⇒ Json

Understand a given text



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# File 'lib/nlu_adapter/watson_assistant.rb', line 34

def parse(text)
  intent_name = :NO_INTENT_FOUND
  begin
    response = @assistant.message(
      workspace_id: @workspace_id,
      input: {
        text: text
      }
    )

    unless response.nil? || response.result.nil? || response.result["intents"].nil? || response.result["intents"][0].nil?
      intent_name = response.result["intents"][0]["intent"]
    end
  rescue WatsonApiException => ex
    puts "Error: #{ex.inspect}"
  end
  return { intent_name: intent_name}
end