Fn Applications

Fn supports grouping functions into a set that defines an application (or API), making it easy to organize and deploy.

Create an app

This part is easy, just create an app.yaml file and put a name in it:

mkdir myapp2
cd myapp2
echo 'name: myapp2' > app.yaml

This directory will be the root of your application.

Create a root function

The root function will be available at / on your application.

fn init --runtime ruby

Now we have a Ruby function alongside our app.yaml.

Create a sub route

Now let's create a sub route at /hello:

fn init --runtime go hello

Now we have two functions in our app. Run:

ls

To see our root function, our app.yaml and a directory named hello.

Deploy the entire app

Now we can deploy the entire application with one command:

fn deploy --all --local

Once the command is done, let's surf to our application:

• Root function at: http://localhost:8080/r/myapp2/
• And the hello function at: http://localhost:8080/r/myapp2/hello

Wrapping Up

Congratulations! In this tutorial you learned how to group functions into an application and deploy them with a single command.

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