Dialogflow CX API: Node.js Client

Cx client for Node.js

A comprehensive list of changes in each version may be found in the CHANGELOG.

• [Dialogflow CX API Node.js Client API Reference][client-docs]
• [Dialogflow CX API Documentation][product-docs]
• github.com/googleapis/google-cloud-node/packages/google-cloud-dialogflow-cx

Read more about the client libraries for Cloud APIs, including the older Google APIs Client Libraries, in Client Libraries Explained.

Table of contents:

• Quickstart
  • Before you begin
  • Installing the client library
  • Using the client library
• Samples
• Versioning
• Contributing
• License

Quickstart

Before you begin

1. [Select or create a Cloud Platform project][projects].
2. [Enable billing for your project][billing].
3. [Enable the Dialogflow CX API API][enable_api].
4. [Set up authentication][auth] so you can access the API from your local workstation.

Installing the client library

npm install @google-cloud/dialogflow-cx

Using the client library

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'my-project';
// const location = 'global';
// const agentId = 'my-agent';
// const audioFileName = '/path/to/audio.raw';
// const encoding = 'AUDIO_ENCODING_LINEAR_16';
// const sampleRateHertz = 16000;
// const languageCode = 'en'

// Imports the Google Cloud Some API library
const {SessionsClient} = require('@google-cloud/dialogflow-cx');
/**
 * Example for regional endpoint:
 *   const location = 'us-central1'
 *   const client = new SessionsClient({apiEndpoint: 'us-central1-dialogflow.googleapis.com'})
 */
const client = new SessionsClient();

const fs = require('fs');
const util = require('util');
// Assumes uuid module has been installed from npm,
// npm i uuid:
const {v4} = require('uuid');

async function detectIntentAudio() {
  const sessionId = v4();
  const sessionPath = client.projectLocationAgentSessionPath(
    projectId,
    location,
    agentId,
    sessionId
  );

  // Read the content of the audio file and send it as part of the request.
  const readFile = util.promisify(fs.readFile);
  const inputAudio = await readFile(audioFileName);

  const request = {
    session: sessionPath,
    queryInput: {
      audio: {
        config: {
          audioEncoding: encoding,
          sampleRateHertz: sampleRateHertz,
        },
        audio: inputAudio,
      },
      languageCode,
    },
  };
  const [response] = await client.detectIntent(request);
  console.log(`User Query: ${response.queryResult.transcript}`);
  for (const message of response.queryResult.responseMessages) {
    if (message.text) {
      console.log(`Agent Response: ${message.text.text}`);
    }
  }
  if (response.queryResult.match.intent) {
    console.log(
      `Matched Intent: ${response.queryResult.match.intent.displayName}`
    );
  }
  console.log(
    `Current Page: ${response.queryResult.currentPage.displayName}`
  );
}

detectIntentAudio();

Samples

Samples are in the samples/ directory. Each sample's README.md has instructions for running its sample.