Function Compute:Configure official public layers

Custom runtimes

These layers provide runtime environments for custom runtimes such as Python 3.10 and Node.js 17. Some layers also bundle common dependency libraries — for example, Python310-Package-Collection includes frequently used Python packages.

Common dependency libraries

Web frameworks

Alibaba Cloud SDKs

Prerequisites

Before you begin, ensure that you have:

• A Function Compute function. To create one, see Create a function.

Add the layer

1. Log on to the Function Compute console. In the left-side navigation pane, click Functions.

2. In the top navigation bar, select a region. On the Functions page, click the name of the function you want to configure.

3. On the function details page, click the Configurations tab.

4. In the left-side navigation tree, click Layers, then click Modify.

5. In the Layers panel, click + Add Layer and select Add Official Common Layer. Choose a layer from the Official Common Layer drop-down list and a version from the Layer Version drop-down list, then click Deploy.

Prerequisites

Before you begin, ensure that you have:

• Serverless Devs installed and Docker configured. See Quick start.

• Serverless Devs configured with your credentials. See Configure Serverless Devs.

Add the layer

1. Run the following command to list official public layers in a region:

   s cli fc layer list --official --region cn-hangzhou

   The output lists available layers with their ARNs. Copy the ARN of the layer you want to use.

   -
     layerName:         Python39-Aliyun-SDK
     arn:               acs:fc:cn-hangzhou:official:layers/Python39-Aliyun-SDK/versions/3
     version:           3
     acl:               1
     description:       Python3.9 Aliyun SDK layer.
     compatibleRuntime:
       - custom
       - python3.9
       - custom.debian10
   -
     layerName:         Python39-Package-Collection
     arn:               acs:fc:cn-hangzhou:official:layers/Python39-Package-Collection/versions/3
     version:           3
     acl:               1
     description:       Python3.9 package collection layer.
     compatibleRuntime:
       - custom
       - custom.debian10

   Key fields in the output:

   Field	Description
   layerName	The name of the layer
   version	The layer version
   arn	The ARN of the layer version, used when attaching the layer to a function
   acl	Access control: 0 = private, 1 = public
   description	A brief description of the layer
   compatibleRuntime	The runtimes this layer supports

2. In your project directory, create a s.yaml file and add the layer ARN to the layers field.

   edition: 3.0.0
   name: hello-world-app
   access: "default"
   
   vars: # The global variables
     region: "cn-hangzhou"
   
   resources:
     hello_world:
       component: fc3 # The component name.
       actions:       # The custom execution logic.
       props:
         region: ${vars.region}
         functionName: "emoji"
         description: 'this is a layer demo'
         runtime: "python3.9"
         code: ./code
         handler: index.handler
         memorySize: 512
         timeout: 60
         internetAccess: true
         layers:    # The ARNs of the layers attached to the function.
           - acs:fc:cn-hangzhou:official:layers/Python39-Aliyun-SDK/versions/3

3. Create a code directory in your project directory and place your function code inside it.

4. Run the following command to deploy the function with the layer configured:

   s deploy