Firestore - Cloud Functions - Get uid

Question

I\'m trying to get the UID of the user authenticated by firebase web sdk, in the cloud function. The cloud function is triggered by onWrite event of cloud fires

Answer 1

Since Cloud Functions 1.0 you can get the UID like this

exports.dbCreate = functions.database.ref('/path').onCreate((snap, context) => {
  const uid = context.auth.uid;
  const authVar = context.auth; 
});

Here is a nice post from the FB team for all CF1.0 changes: https://firebase.google.com/docs/functions/beta-v1-diff#event_parameter_split_into_data_and_context

The data of context.auth can be found here: https://firebase.google.com/docs/firestore/reference/security/#properties