LambdaBase

Base library to create Elixir AWS Lambda

Installation

The package can be installed by adding lambda_base to your list of dependencies in mix.exs:

def deps do
  [
    {:lambda_base, "~> 1.1.0"}
  ]
end

If you run Lambda as application, you must add below.

def project do
  [
    boot_mode: :app
  ]
end

def application do
  [
    mod: {LambdaBase.Application, []}
  ]
end

Basic Usage

1. Create Lambda module. Implement handle(event, context) function.

defmodule UpCase do
  use LambdaBase
  @impl LambdaBase
  def init(context) do
    # call back one time
    {:ok, context}
  end
  @impl LambdaBase
  def handle(event, context) do
    {:ok, event |> Json.encode |> String.upcase}
  end
end

1. Create zip file for AWS Lambda.

$ docker run -d -it --name elx erintheblack/elixir-lambda-builder:1.10.0
$ docker cp ${project} elx:/tmp
$ docker exec elx /bin/bash -c "cd /tmp/${project}; mix deps.get; mix lambda.release"
$ docker cp elx:/tmp/${app_name}.zip .

1. Upload zip file and set configuration.

• Set Module Name to handler.
• Set Log level to environment -> LOG_LEVEL
  • debug, info, warn, error

The docs can be found at https://hexdocs.pm/lambda_base.