javascript - Firebase HTTP Cloud Functions - Read database once

Question

I have a Firebase HTTPs function. The function needs to read a value from a Firebase database based on the query parameter, and return a result based on this data.

The Firebase JS SDK says to do this using:

return firebase.database().ref('/users/' + userId).once('value').then(function(snapshot) {
  var username = snapshot.val().username;
  // ...
});

However, the Cloud functions examples have:

var functions = require('firebase-functions');

functions.database.ref('/');

But the DB reference doesn't have the method once, only onWrite (https://firebase.google.com/docs/reference/functions/functions.database.RefBuilder). This is obviously for DB write functions, rather than HTTP functions.

Is there a correct way to read from the database once in a HTTP function? Can I use the normal Firebase SDK, or is there a better way?

Thanks.

Answer 1

Waitting for answers