How to do Axios request from Firebase Cloud Function - firebase

Question

I've tried the following in Firebase Cloud Function to do an Axios request but it didn't work.
const functions = require('firebase-functions');
const axios = require('axios');
const cors = require('cors')({ origin: true });
exports.checkIP = functions.https.onRequest((req, res) => {
cors(req, res, () => {
if( req.method !== "GET" ) {
return res.status(401).json({
message: "Not allowed"
});
}
return axios.get('https://api.ipify.org?format=json')
.then(data => {
console.log(data)
res.status(200).json({
message: data.ip
})
})
.catch(err => {
res.status(500).json({
error: err
})
})
})
})
I've also googled a lot for seeing some example of how to use Axios with Cloud Functions but found none. The above code is not returning anything.
Can anyone help?
P.S.: I've already added billing details in my Firebase account and not using the free Spark plan, rather using Blaze plan.
Edit:
I've finally able to do this using the request-promise node package but still no idea about how to do it with axios. As no matter what I try, axios doesn't work in Firebase cloud functions. This is what I did:
npm i --save cors request request-promise
Then this is the code I run: https://gist.github.com/isaumya/0081a9318e4f7723e0123f4def744a0e
Maybe it will help someone. If anyone knows how to do it with Axios please answer below.

Answer 1

I changed data.ip to response.data.ip and added return before the two res.status(... lines and the deployed cloud function works for me using Axios when I try it.
The code I have is
const functions = require('firebase-functions');
const axios = require('axios');
const cors = require('cors')({ origin: true });
exports.checkIP = functions.https.onRequest((req, res) => {
cors(req, res, () => {
if (req.method !== "GET") {
return res.status(401).json({
message: "Not allowed"
});
}
return axios.get('https://api.ipify.org?format=json')
.then(response => {
console.log(response.data);
return res.status(200).json({
message: response.data.ip
})
})
.catch(err => {
return res.status(500).json({
error: err
})
})
})
});
When I invoke the function I get back a reply like
{
"message": "127.168.121.130"
}

Answer 2

I experienced the same issue. An HTTP request with axios returns the following error message :
TypeError: Converting circular structure to JSON
Here is an explanation of what is going on and how to get around this
You can use the following package :
https://github.com/moll/json-stringify-safe
I'm not sure about the consistency of this approach and personally went for request-promise, which is heavier than axios but allows straightforward HTTP requests.