Detect Dialogflow intent that supports multiple agents using API v2

dlf-detect-intent.js

'use strict';

// @ts-ignore
const dialogflow = require('dialogflow');
const fs = require('fs');

/**
 * Detect dialogflow intent
 * @param {String} botId
 * @param {String} sessionId
 * @param {String} text
 * @param {String} languageCode
 */
function detectIntent(botId, sessionId, text, languageCode) {
  return Promise.resolve().then((r) => {
    // Update the Google Application Credential
    // before creating new session client
    if (!updateGAC(botId)) {
      return Promise.reject(new Error('GAC file does not exist'));
    }

    // Create session client
    const projectId = getProjectId(botId);
    const sessionClient = new dialogflow.SessionsClient();
    const sessionPath = sessionClient.sessionPath(projectId, sessionId);

    // Create request. For example, I will create a text request
    const request = {
      session: sessionPath,
      queryInput: {
        text: {
          text: text,
          languageCode: languageCode,
        },
      },
    };

    // Detect intent
    return sessionClient
      .detectIntent(request)
      .then((responses) => {
        console.log(`> Detected intent for ${botId}`);
        const result = responses[0].queryResult;
        console.log(`  Query: ${result.queryText}`);
        console.log(`  Response: ${result.fulfillmentText}`);
      }).catch((err) => {
        console.error(err);
      });
  });
}

/**
 * Update Google Application Credential for the bot by bot id
 * @param {String} botId
 * @return {Boolean}
 */
function updateGAC(botId) {
  const gacPath = `./path/to/google-application-credential-${botId}.json`;
  if (process.env.GOOGLE_APPLICATION_CREDENTIALS === gacPath) {
    return true;
  }

  if (!fs.existsSync(gacPath)) {
    return false;
  }

  process.env.GOOGLE_APPLICATION_CREDENTIALS = gacPath;
  return true;
}

/**
 * Get project id by bot id
 * @param {String} botId
 * @return {String}
 */
function getProjectId(botId) {
  // Get your Dialogflow project id from database...
  return 'project-id';
}

Will this work in the case of 50 simultaneous call ?