terraform-aws-lambda-layer

Terraform module for creating AWS Lambda layers with minimal configuration.

Usage

module "my_layer" {
  source = "./terraform-aws-lambda-layer"
  
  namespace = "myorg"
  name      = "shared-utils"
  
  source_dir = "./layer"
  
  compatible_runtimes      = ["provided.al2023", "python3.11"]
  compatible_architectures = ["arm64"]
  description             = "Shared utilities layer"
}

Examples

Basic Layer

module "utils_layer" {
  source = "./terraform-aws-lambda-layer"
  
  name       = "utils"
  source_dir = "./src/layer"
}

Pre-built ZIP

module "prebuilt_layer" {
  source = "./terraform-aws-lambda-layer"
  
  name     = "prebuilt"
  filename = "./dist/layer.zip"
}

Inputs

Name	Description	Type	Default	Required
source_dir	Path to source directory containing layer code	string	null	no
filename	Path to pre-built zip file	string	null	no
compatible_runtimes	List of compatible runtimes	list(string)	["provided.al2023"]	no
compatible_architectures	List of compatible architectures	list(string)	["arm64"]	no
description	Layer description	string	null	no
license_info	License information	string	null	no

Outputs

Name	Description
layer_arn	Lambda layer ARN
layer_version	Lambda layer version
package_path	Path to deployment package
ssm_parameters	SSM parameter names for integration

Layer Structure

Your layer source directory should follow AWS Lambda layer conventions:

layer/
├── bin/           # Executables
├── lib/           # Libraries  
└── python/        # Python packages (if using Python runtime)