– Go to https://console.firebase.google.com and create a firebase project.

– Node and NPM should be installed in your local box.

Install Firebase Command Line Tools:

– Execute the following command in command line.

Rajas-MBP:Firebase raja$ sudo npm install -g firebase-tools

Rajas-MBP:Firebase raja$ firebase — version

3.13.1

Login to firebase from console :

Create a project folder in you localbox called functions-firecast
Enter inside the folder and login to firebase using CLI. Follow the command below.

Rajas-MBP:Firebase raja$ mkdir functions-firecast

Rajas-MBP:Firebase raja$ cd functions-firecast/

Rajas-MBP:functions-firecast raja$ firebase login

? Allow Firebase to collect anonymous CLI usage and error reporting information?

Yes

– Browser will open, enter the same gmail account info using which you have created the project earlier

– Close the browser after completion of the steps.

Waiting for authentication…

✔ Success! Logged in as dummymailidtest@gmail.com

* Note : You will see your gmail id instead of dummymailidtest@gamil.com *

Initialize the Project: In the command line enter into the project folder and run the following command.

Rajas-MBP:functions-firecast raja$ firebase init

– choose the project that you have created earlier as default project
– choose Functions to configure and deploy cloud functions.
– install dependancies using npm

i Writing configuration info to firebase.json…
i Writing project information to .firebaserc…

✔ Firebase initialization complete!

Open the code in editor :

• Go to functions-firecast -> functions -> index.js and uncomment the “exports.helloworld” function
• This http function will be triggered when there is a web request. It uses express framework of node.

Deploy the function:

Run the following command in command line to deploy the function to google cloud under your project.

Rajas-MBP:functions-firecast raja$ firebase deploy

✔ Deploy complete!

Project Console: https://console.firebase.google.com/project/test123456/overview
Function URL (helloWorld): https://us-central1-test123456.cloudfunctions.net/helloWorld
Rajas-MBP:functions-firecast raja$

Check the content in browser :

• Open the URL https://us-central1-test123456.cloudfunctions.net/helloWorld in browser.
• You can find “Hello from Firebase!” in the browser

*Note-: Instead of test123456 you will see your project name*

Change the content and verify in browser :

– Change “exports.hellowworld” function content as given below in index.js.

exports.helloWorld = functions.https.onRequest((request, response) => {

response.send(“Hello from Me !!”);
console.log(“hello world function triggered !!”);
});

• Save the code
• Go to console and deploy using command “firebase deploy” from your project folder.
• Refresh the browser. You can find the updated content !!

To find functions and Logs in Google Cloud :

• Go to the project page in google console. (https://console.firebase.google.com/project/test123456/functions/list)
• Go to the functions tab in left hand side panel.
• You can find the hello world functions in the dashboard and logs in the logs tab.
• You can see the console.log statement inside.

Summary:

– Setup

1) Create a firebase project at https://console.firebase.google.com

2) Node latest version should be installed

3) NPM latest version should be installed

4) Install firebase-tools using npm :

sudo npm install -g firebase-tools

– Run the following command to deploy cloud function from scratch :

1) Rajas-MBP:Firebase raja$ mkdir functions-firecast

2) Rajas-MBP:Firebase raja$ cd functions-firecast/

3) Rajas-MBP:functions-firecast raja$ firebase login

After Successful Login

4) Rajas-MBP:functions-firecast raja$ firebase init

5) Rajas-MBP:functions-firecast raja$ firebase deploy

6) Go to the http endpoint URL in browser (for ex: https://console.firebase.google.com/project/test123456/functions/list)

You can find “Hello from Firebase!” in the browser

• Go to the https://firebase.google.com/docs/
• and https://cloud.google.com/functions/ for more information