Nodejs-dialogflow: How do you want me to deploy this on an AWS Lambda?

[Knowledge91]

The Expected version "^8.11.2 || >=9.4" the maximum AWS Lambda offers is 8.10.

[JustinBeckwith]

Greetings! This module only requires nodejs 6 and up:
https://github.com/googleapis/nodejs-dialogflow/blob/master/package.json#L8

Are you running into a specific issue while trying it with that version of 8?

[Knowledge91]

I am facing an error with the google-gax module:

/Users/knowledge/Developer/alda-dialogflow/node_modules/google-gax/build/src/path_template_parser.js:304
      if (input.charCodeAt(peg$currPos) === 47) {
                ^

TypeError: input.charCodeAt is not a function
    at peg$parsetemplate (/Users/knowledge/Developer/alda-dialogflow/node_modules/google-gax/build/src/path_template_parser.js:304:17)
    at Object.peg$parse [as parse] (/Users/knowledge/Developer/alda-dialogflow/node_modules/google-gax/build/src/path_template_parser.js:633:18)
    at new PathTemplate (/Users/knowledge/Developer/alda-dialogflow/node_modules/google-gax/build/src/path_template.js:55:54)
    at segments.forEach.segment (/Users/knowledge/Developer/alda-dialogflow/node_modules/google-gax/build/src/path_template.js:120:29)
    at Array.forEach (<anonymous>)
    at PathTemplate.render (/Users/knowledge/Developer/alda-dialogflow/node_modules/google-gax/build/src/path_template.js:114:23)
    at SessionsClient.sessionPath (/Users/knowledge/Developer/alda-dialogflow/node_modules/dialogflow/src/v2/sessions_client.js:320:52)
    at Object.<anonymous> (/Users/knowledge/Developer/alda-dialogflow/handler.js:8:35)
    at Module._compile (internal/modules/cjs/loader.js:736:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:747:10

First I thought it would be a problem with the node version. The error message is not helping me.
I made a simple example:

'use strict';
const dialogflow = require('dialogflow');
const sessionClient = new dialogflow.SessionsClient();

const projectId = 'alda-57116'
const languageCode = 'es'
const sessionId = 1
const sessionPath = sessionClient.sessionPath(projectId, sessionId);

const request = {
  session: sessionPath,
  queryInput: {
    text: {
      text: query,
      languageCode: languageCode,
    },
  },
};

sessionClient.detectIntent(request).then(res => {
  console.log(res[0].queryResult.fulfillmentMessages)
})

and supsect that something is wrong with my service-account authentification.
In principle I created a service-account-key, retrieved a .json file and mapped the GOOGLE_APPLICATION_CREDENTIALS environmental variable to the .json file.

[JustinBeckwith]

This is just a horrific error message that means you haven't passed a project Id :/ We need to fix that. Can you verify that you're either a.) Using a service account key that has a project id in it or b.) setting the GCLOUD_PROJECT env var?

[Knowledge91]

Still not working. I did the following:
export GOOGLE_APPLICATION_CREDENTIALS="/home/user/Downloads/[FILE_NAME].json"
export GCLOUD_PROJECT="test-123456"
and the error still occurs. I am also confused of the fact that I have to set the Google Project Id two times? One time in the code const sessionPath = sessionClient.sessionPath(projectId, sessionId); and one time in the environment?

A part from that I am pretty sure that there is a dependency that needs a higher version of node than 8.10:

mkdir lol
cd lol
nvm use 8.10
node --version => v8.10.0
yarn add dialogflow

error @grpc/[email protected]: The engine "node" is incompatible with this module. Expected version "^8.11.2 || >=9.4".
error Found incompatible module

so grpc is also causing troubles.

[Knowledge91]

Anyways I got it working by trying your quicksample.js:

const dialogflow = require('dialogflow');
const uuid = require('uuid');

/**
 * Send a query to the dialogflow agent, and return the query result.
 * @param {string} projectId The project to be used
 */
async function runSample(projectId = 'your-project-id') {
  // A unique identifier for the given session
  const sessionId = uuid.v4();

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

  // The text query request.
  const request = {
    session: sessionPath,
    queryInput: {
      text: {
        // The query to send to the dialogflow agent
        text: 'hello',
        // The language used by the client (en-US)
        languageCode: 'en-US',
      },
    },
  };

  // Send request and log result
  const responses = await sessionClient.detectIntent(request);
  console.log('Detected intent');
  const result = responses[0].queryResult;
  console.log(`  Query: ${result.queryText}`);
  console.log(`  Response: ${result.fulfillmentText}`);
  if (result.intent) {
    console.log(`  Intent: ${result.intent.displayName}`);
  } else {
    console.log(`  No intent matched.`);
  }
}
// [END dialogflow_quickstart]

const args = process.argv.slice(2);
if (args.length !== 1) {
  console.error(`
    USAGE:
       node quickstart.js <projectId>
     EXAMPLE:
       node quickstart.js my-project-id
    You can find your project ID in your Dialogflow agent settings:  https://dialogflow.com/docs/agents#settings.
  `);
  process.exit(1);
}

I do not know where this differs from my code but I am good for know!
Thanks for your help ;)

[Knowledge91]

BTW I know what was causing the error!
The sessionId has to be a String in sessionClient.sessionPath(projectId, sessionId).

In my code I passed the function a integer, which you should consider accepting as well:
sessionClient.sessionPath(projectId, 1)

[giannidhooge]

Changing it to a string also fixed the issue here.
Strange that the official docs and example are saying the following:

sessionId: Random number or hashed user identifier

See: https://github.com/googleapis/nodejs-dialogflow/blob/74ef7f70505e69c4a548f3a327a2ba7520f42611/samples/detect.js#L33