How can we implement Micro-service architecture using Firebase Cloud Functions can we write multiple .js files unlike writing all functions into index.js so that we need not re-deploy all functions for change in single function
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3 Answers
I'm importing other .js files with firebase functions. Just think of the functions folder as root, I was mistakenly trying to import files from /functions parent folder.
index.js
var paymentFunctions = require('./payment_functions'); along with something like:
exports.paymentMethodTask = functions.database.ref('/newPaymentMethodTask/{taskId}').onWrite(event => { return paymentFunctions.processPaymentMethodTask(event); }); With the folder structure:
/myProject/functions/index.js /myProject/functions/payment_functions.js Then export your functions in payment_functions.js as normal:
module.exports = { processPaymentMethodTask: function test(event) { //do something here with the event } }; https://medium.com/step-up-labs/our-experience-with-cloud-functions-for-firebase-d206448a8850
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All your Cloud Functions for Firebase will have to be defined in the index.js file. But that doesn't mean you have to implement all functionality in a single file.
I often implement the bulk of each function in a separate file. For example, if I'm using the Google Cloud Vision API to extra text from images, I'll have an ocr.js. I give this file a main section, so that I can run the script from a local terminal using node ocr.js. Then in my index.js I need little more code than an import of ocr.js and wiring that up to Cloud Functions.
Also see:
- my answer here for the code of the above example.
- this video from I/O
answered Jul 18, 2017 at 13:33
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Hi you can do this in the following way.
alpha.js
const functions = require('firebase-functions'); exports.alphaFunction = functions.https.onRequest((request, response) => { // Your code }); index.js
const functions = require('firebase-functions'); var alphaFunction = require('./alpha'); exports.mainFunction = functions.https.onRequest((request, response) => { //Inside your main function exports.alphaFunction = alphaFunction.alphaFunction(); }); 