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

2017-03-22 edit: google just announced firebase cloud functions, which is a much better way to do this. Cloud functions work just like lambda, and can trigger from firebase events.

---

Here's my solution using the REST api (so you don't need to require anything):

var https = require('https');
var firebaseHost = "yourapp.firebaseio.com";
function fbGet(key){
  return new Promise((resolve, reject) => {
    var options = {
      hostname: firebaseHost,
      port: 443,
      path: key + ".json",
      method: 'GET'
    };
    var req = https.request(options, function (res) {
      res.setEncoding('utf8');
      var body = '';
      res.on('data', function(chunk) {
        body += chunk;
      });
      res.on('end', function() {
        resolve(JSON.parse(body))
      });
    });
    req.end();
    req.on('error', reject);
  });
}

function fbPut(key, value){
  return new Promise((resolve, reject) => {
    var options = {
      hostname: firebaseHost,
      port: 443,
      path: key + ".json",
      method: 'PUT'
    };

    var req = https.request(options, function (res) {
      console.log("request made")
      res.setEncoding('utf8');
      var body = '';
      res.on('data', function(chunk) {
        body += chunk;
      });
      res.on('end', function() {
        resolve(body)
      });
    });
    req.end(JSON.stringify(value));
    req.on('error', reject);
  });
}

You can use it like this:

fbPut("/foo/bar", "lol").then(res => {
  console.log("wrote data")
})

And then:

fbGet("/foo/bar").then(data => {
  console.log(data); // prints "lol"
}).catch(e => {
  console.log("error saving to firebase: ");
  console.log(e);
})