#Hello World Node.js Example

Make sure serverless is installed. See installation guide.

Once installed the Serverless CLI can be called with serverless or the shorthand sls command.

$ sls

Commands
* You can run commands with "serverless" or the shortcut "sls"
* Pass "--verbose" to this command to get in-depth plugin info
* Pass "--no-color" to disable CLI colors
* Pass "--help" after any <command> for contextual help

#1. Create a service

sls create --template azure-nodejs --path $(whoami)-sample-app

Using the create command we can specify one of the available templates. For this example we use azure-nodejs with the --template or shorthand -t flag.

The --path or shorthand -p is the location to be created with the template service files.

#Note

Azure plugin use a combination of:

• prefix, if provided
• service name
• region
• stage

to generate resource names. Since resource name have to be unique in Azure, adding $(whoami) will append your username to the service name, thus creating a unique name.

#Install Provider Plugin

Change directories into the new folder created in previous step.

Run

npm install

#Testing Locally

You can skip this section if you do not want to test your functions locally before deploy.

#Terminal 1

sls offline

#Terminal 2

sls invoke local -f hello -d '{"name": "Azure"}'

In your terminal window you should see the following response

$Serverless: URL for invocation: http://localhost:7071/api/hello?name%3DAzure
$Serverless: Invoking function hello with GET request
$Serverless: "Hello Azure"

#Deploy

sls deploy

#Invoke deployed function

1. Invoke deployed function with command invoke and --function or shorthand -f.

   sls invoke -f hello -d '{"name": "Azure"}'

2. In your terminal window you should see the response from azure

   $Serverless: Logging into Azure
   $Serverless: Using subscription ID: A356AC8C-E310-44F4-BF85-C7F29044AF99
   $Serverless: URL for invocation: http://{baseURL}.azurewebsites.net/api/hello?name%3DAzure
   $Serverless: Invoking function hello with GET request
   $Serverless: "Hello Azure"

Congrats you have deployed and ran your Hello World function!