Lambda Layers

Package code libraries for sharing with Lambda Functions

A Lambda Layer is a Zip archive that can contain additional code or other content. A Lambda Layer may contain libraries, a custom runtime, data, or configuration files.

Lambda Layers provide a convenient and effective way to package code libraries for sharing with Lambda functions in your account. Using layers can help reduce the size of uploaded archives and make it faster to deploy your code.

Enabling Lambda Layer creation

You must add a Key/Value pair in the DuploCloud Portal's System Config settings to display Lambda Layers in DuploCloud.

1. In the DuploCloud Portal, navigate to Administrator -> System Settings.

2. Click the System Config tab.

3. Click Add. The Add Config pane displays.

   

   Add Config pane

4. From the Config Type list box, select Other. The Other Config Type field displays.

5. In the Other Config Type field, select AppConfig.

6. In the Key field, enter ListAllLambdaLayers.

7. In the Value field, enter true.

8. Click Submit. The Key/Value pair is displayed in the System Config tab.

System Settings with ListAllLambdaLayers AppConfig Type set to Value of True

After you set ListAllLambdaLayers to true:

• Layer names prefixed with duplo- display for all Tenants in the DuploCloud Portal.

• Layer names prefixed with duploservices-TENANT_NAME display in the TENANT_NAME Tenant.

Creating Lambda Layers

Follow the AWS instructions to create layers.

Adding Lambda Layers to a Lambda Function

You can add layers to a new or existing Lambda Function. For example, to add a layer to an existing function:

1. In the DuploCloud Portal, navigate to Cloud Services -> Serverless.

2. In the Lambda tab, select the Lambda Function to which you want to add Lambda Layers.

3. Click the Actions menu and select Edit. The Edit Lambda Function page displays.

4. In the Layers area, click the + button. The Add Lambda Layer pane displays.

   

   Lambda Layers area with add (+) and Delete options

   

   Add a Lambda Layer pane
5. From the Layer list box, select the Lambda Layer to add.

6. From the Version list box, select the layer version.

7. Click Add Layer. The layer you added is displayed in the Layers area of the Edit Lambda Function page.