Invalid json while trying gcloud functions commands via javascript

Question

I am trying to run a sample test using Jest to verify if my Google Cloud Function is working fine or not but I am constantly getting following error.

I have tried running the following command directly in windows power shell but still the same error which can be escaped using \ before double quotes.

Error: Command failed: gcloud beta functions call cf-1 --region europe-west1 --data '{"data":"eyJkYXRhIjoiMSJ9"}'
ERROR: (gcloud.beta.functions.call) Invalid value for [--data]: Is not a valid JSON: No JSON object could be decoded

test file

const childProcess = require('child_process');

describe('Test CF', () => {
    it('print outs the error message when received JSON is blank', done => {
        const msg = { data: '1' };
        const encodedMsg = Buffer.from(JSON.stringify(msg)).toString('base64');
        const data = JSON.stringify({ data: encodedMsg });
        const executeResultOutput = childProcess.execSync(`gcloud beta functions call cf-1 --region europe-west1 --data '${data}'`).toString();

        const logs = childProcess
            .execSync(
                `gcloud functions logs read cf-1 --region europe-west1 --execution-id ${executionIdObj}`,
            )
            .toString();

        expect(logs).toEqual(expect.stringContaining('Error..'));
    });
});

Update#1: Still the same issue...

Answer 1

I have tried to replicate your situation and the issue you're experiencing by doing the following:

First, I deployed a simple Cloud Function using Node.js 8:

/**
 * Responds to any HTTP request.
 *
 * @param {!express:Request} req HTTP request context.
 * @param {!express:Response} res HTTP response context.
 */
exports.simpleFunction = (req, res) => {
  let data = req.query.data || req.body.data || 'Didn\'t work!';
  res.status(200).send(data);
};

After that, I followed a Google Cloud Platform Quickstart guide to create a simple Node.js app, which I then modified to call my function locally. I have added some lines of the code, which you have in your example to call the function:

'use strict';
 
// [START gae_node_request_example]
const express = require('express');
const childProcess = require('child_process');
 
const app = express();

// The lines you used for a function call 
const msg = { data: '1' };
const encodedMsg = Buffer.from(JSON.stringify(msg)).toString('base64');
const data = JSON.stringify({ data: encodedMsg });
const executeResultOutput = childProcess.execSync(`gcloud beta functions call b-func --region us-central1 --data '${data}'`).toString();
 
 
app.get('/', (req, res) => {
  res
    .status(200)
    .send(executeResultOutput)
    .end();
});
 
// Start the server
const PORT = process.env.PORT || 8080;
app.listen(PORT, () => {
  console.log(`App listening on port ${PORT}`);
  console.log('Press Ctrl+C to quit.');
});
// [END gae_node_request_example]
 
module.exports = app;

The code above worked for me and here is the output that I received:

executionId: 6n6pf9720dsj result: eyJtZXNzYWdlIjoiMSJ9

---

The only time I was able to get the same ERROR as yours: Is not a valid JSON: No JSON object could be decoded was when I passed the data value without surrounding it with quotes:

const data = {"data":"some data"};
const executeResultOutput = childProcess.execSync(`gcloud beta functions call b-func --region us-central1 --data '${data}'`).toString();

---

Edit:

I have tested the code that I mentioned above in Linux environment. Once I tried to run it in Windows I got the same error.

Since the code is being run locally, PowerShell still will need to escape the parameters as John pointed out.

As I see you've opened a new question regarding this issue already. Try the solution that was offered there - it worked for me.