FaunaDB application returns 401 but credentials are fine

Question

I wanted to try FaunaDB, so I made a NodeJS application. I followed along a tutorial which made an application like twitter. However, when I try to access database, I get 403 unauthorized message. I have checked my security keys, but I still get the same error. Any help would be appreciated.

.env file:

KEY=randomString
PORT=5000

index.js:

require("dotenv").config();
const app = require("express")();
const faunadb = require("faunadb");

const client = new faunadb.Client({
    secret: process.env.KEY,
});

const {
    Paginate,
    Get,
    Select,
    Match,
    Index,
    Create,
    Collection,
    Lambda,
    Var,
    Join,
    Ref,
} = faunadb.query;

app.listen(5000, () => console.log(`API on http://localhost:${process.env.PORT}`));

app.get("/tweet/:id", async (req, res) => {
    try {
        const doc = await client.query(
            Get(
                Ref(
                    Collection("tweets"),
                    req.params.id
                )
            )
        )
        res.send(doc);

    } catch (err) {
        res.send(err)
    }
});

Error message:

HTTP/1.1 200 OK
X-Powered-By: Express
Content-Type: application/json; charset=utf-8
Content-Length: 853
ETag: W/"355-EPYXYAwyDrJxa8vWUbY5JYPY+pw"
Date: Thu, 22 Jul 2021 11:12:16 GMT
Connection: close

{
  "name": "Unauthorized",
  "message": "unauthorized",
  "description": "Unauthorized",
  "requestResult": {
    "method": "POST",
    "path": "",
    "query": null,
    "requestRaw": "{\"create\":{\"collection\":\"test\"},\"params\":{\"object\":{\"data\":{\"object\":{\"testField\":\"testValue\"}}}}}",
    "requestContent": {
      "create": {
        "collection": "test"
      },
      "params": {
        "object": {
          "data": {
            "object": {
              "testField": "testValue"
            }
          }
        }
      }
    },
    "responseRaw": "{\"errors\":[{\"code\":\"unauthorized\",\"description\":\"Unauthorized\"}]}",
    "responseContent": {
      "errors": [
        {
          "code": "unauthorized",
          "description": "Unauthorized"
        }
      ]
    },
    "statusCode": 401,
    "responseHeaders": {
      ":status": 401,
      "www-authenticate": "Basic realm=\"Unauthorized\"",
      "x-txn-time": "1626952335964976",
      "x-faunadb-build": "070821.200951-e596d0a",
      "content-length": "65",
      "content-type": "application/json;charset=utf-8"
    },
    "startTime": 1626952335231,
    "endTime": 1626952336270
  }
}

Answer 1

Instantiating the client like this:

const client = new faunadb.Client({
  secret: process.env.KEY,
});

you are applying a few default parameters, as if you write your code this way (I'm specifying the most important ones only):

const client = new faunadb.Client({
  secret: process.env.KEY,
  domain: 'db.fauna.com',
  scheme: 'https',
});

In case you are using US Region group, EU Region group, or Preview environment, "db.fauna.com" default domain won't work for you.

Thus, you need to provide a domain param explicitly in the constructor.

For US Region group:

const client = new faunadb.Client({
  secret: process.env.KEY,
  domain: 'db.us.fauna.com',
  scheme: 'https',
});

For EU Region group:

const client = new faunadb.Client({
  secret: process.env.KEY,
  domain: 'db.eu.fauna.com',
  scheme: 'https',
});

For Preview:

const client = new faunadb.Client({
  secret: process.env.KEY,
  domain: 'db.fauna-preview.com',
  scheme: 'https',
});

You can read more about Region Groups in the docs: https://docs.fauna.com/fauna/current/api/fql/region_groups