How to create and deploy a function with the Scaleway CLI

Scaleway Command Line Interface Overview

The Scaleway Command Line Interface (CLI) allows you to pilot your Scaleway infrastructure directly from your terminal, providing a faster way to administer and monitor your resources. Scaleway CLI is easy to set up and use, and an essential tool for operating efficiently in your cloud environment. The CLI provides many functionalities, including the ability to create and deploy Serverless Functions.

Before you start

To complete the actions presented below, you must have:

• A Scaleway account logged into the console
• Owner status or IAM permissions allowing you to perform actions in the intended Organization
• An SSH key
• A valid API key
• Installed and configured the Scaleway CLI

Creating a function

1. Run the following command in your terminal to create a functions namespace:

   scw function namespace create name=<YOUR_NAMESPACE_NAME>
   

   An output similar to the following displays:

   ID                   6e74dbb7-9323-46bb-abc7-5c0105f4e70e
   Name                 <YOUR_NAMESPACE_NAME>
   OrganizationID       55e28409-776f-4f65-a41e-6c5fc58b4076
   ProjectID            55e28409-776f-4f65-a41e-6c5fc58b4076
   Status               pending
   RegistryNamespaceID  -
   RegistryEndpoint     -
   Description          -
   Region               fr-par
   

2. Run the following command in your terminal to create a function:

   scw function function create name=<FUNCTION_NAME> namespace-id=<NAMESPACE_ID> runtime=<YOUR_RUNTIME>
   

   An output similar to the following displays:

   ID              717fb5f9-95c3-4c0b-84db-2321283e46dc
   Name            <FUNCTION_NAME>
   NamespaceID     cee31af8-d43e-4078-8f55-c921a9311f47
   Status          created
   MinScale        0
   MaxScale        5
   Runtime         python310
   MemoryLimit     256
   CPULimit        140
   Timeout         5 minutes
   Handler         handler.handle
   Privacy         public
   Description     -
   DomainName      namespace0leshy-cli-fn-functionname.functions.fnc.fr-par.scw.cloud
   Region          fr-par
   HTTPOption      enabled
   RuntimeMessage  -
   

   Tip

   Refer to this page to see all the available runtimes.

3. Create a zip file containing your function’s code by following this procedure.

   Note

   For testing purposes, you can create a zip archive with a simple Python file named handler.py inside, that contains the following code:

   def handle(event, context):
   return {
       "body": {
           "message": 'Hello, world',
       },
       "statusCode": 200,
   }
   

Deploying a function

1. Run the following command to deploy your function with the zip archive you just created:

   scw function deploy name=<FUNCTION_NAME> namespace-id=<NAMESPACE_ID> runtime=<YOUR_RUNTIME> zip-file=path/to/archive/<ZIP_FILE>
   

   The deployment process can take up to three minutes.

2. Run the following command to call your function:

   curl <YOUR_FUNCTION_ENDPOINT>
   

   Your function is now deployed and ready to be used.