Amazon Lambda to Firebase

Question

I get \'Cannot find module \'firebase\' when I try to run this in Lambda (Node.js 4.3)

var Firebase = require(\'firebase\');

Same thing hap

Answer 1

This is late, but in case someone else is looking:

Zipping your project folder instead of the contents of the project folder can cause this. The zipped folder, when extracted, should not contain a folder with the lambda files in it, but should have the index.js file and the node_modules folder at root level.

A working example of a lambda function is (using latest shiny firebase stuff *sigh*):

var firebase = require('firebase');

// Your service account details
var credentials = {
  "type": "service_account",
  "project_id": "project-123451234512345123",
  "private_key_id": "my1private2key3id",
  "private_key": "-----BEGIN PRIVATE KEY-----InsertKeyHere-----END PRIVATE KEY-----\n",
  "client_email": "projectname@project-123451234512345123.iam.gserviceaccount.com",
  "client_id": "1111222223333344444",
  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
  "token_uri": "https://accounts.google.com/o/oauth2/token",
  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/projectname%40project-123451234512345123.iam.gserviceaccount.com"
};

firebase.initializeApp({
  serviceAccount: credentials,
  databaseURL: "https://project-123451234512345123.firebaseio.com"
});

exports.handler = function (event, context, callback) {

  // I use some data passed in from AWS API Gateway:
  if (!event.firebaseUid) {
    callback('Missing param for id');
  }

  firebase.database().ref().child('users').child(firebaseUid).child('at').set(newTokens.access_token).then(function (data) {
    console.log('Firebase data: ', data);
    firebase.database().goOffline();
    callback(null, 'Firebase data: ', data);
  }).catch(function (error) {
    callback('Database set error ' + error);
  });
 };

Now for the caveat. I have experienced this causing the lambda function to timeout even after the firebase callback has happened, ie. the set function seems to create a listener that holds the lambda function open despite return of correct data.

Update: Calling firebase.database().goOffline() fixes the Lambda function timeout issue i was experiencing.

The usual cautions about security not being verified or appropriate, and the possibilities of halting space and time by using this apply.